./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops-crafted-1/watermelon.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_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/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_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops-crafted-1/watermelon.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/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_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/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 dda0b992ac1600896503297d86377b482d0a82ded923ea00c7e9ff3fed4db7e7 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:43:00,438 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:43:00,524 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 04:43:00,534 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:43:00,534 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:43:00,560 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:43:00,560 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:43:00,561 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:43:00,561 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:43:00,561 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:43:00,561 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:43:00,562 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:43:00,562 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:43:00,562 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:43:00,562 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:43:00,562 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:43:00,563 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:43:00,563 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:43:00,563 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:43:00,563 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:43:00,563 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:43:00,563 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:43:00,563 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:43:00,564 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:43:00,564 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:43:00,564 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:43:00,564 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:43:00,564 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:43:00,564 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:43:00,565 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:43:00,565 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:43:00,565 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:43:00,565 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:43:00,565 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:43:00,565 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:43:00,565 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:43:00,566 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:43:00,566 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:43:00,566 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:43:00,566 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:43:00,566 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:43:00,566 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:43:00,566 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:43:00,566 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:43:00,567 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:43:00,567 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:43:00,567 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:43:00,567 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:43:00,567 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_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/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 -> dda0b992ac1600896503297d86377b482d0a82ded923ea00c7e9ff3fed4db7e7 [2024-11-28 04:43:00,917 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:43:00,932 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:43:00,936 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:43:00,937 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:43:00,938 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:43:00,939 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/loops-crafted-1/watermelon.c [2024-11-28 04:43:04,268 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/data/95f2f007b/f0b597b14bad4aad96354c9ded7c8645/FLAG488085159 [2024-11-28 04:43:04,515 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:43:04,516 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/sv-benchmarks/c/loops-crafted-1/watermelon.c [2024-11-28 04:43:04,524 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/data/95f2f007b/f0b597b14bad4aad96354c9ded7c8645/FLAG488085159 [2024-11-28 04:43:04,539 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/data/95f2f007b/f0b597b14bad4aad96354c9ded7c8645 [2024-11-28 04:43:04,542 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:43:04,543 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:43:04,546 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:43:04,546 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:43:04,551 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:43:04,552 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:43:04" (1/1) ... [2024-11-28 04:43:04,553 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78ef00e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:43:04, skipping insertion in model container [2024-11-28 04:43:04,553 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:43:04" (1/1) ... [2024-11-28 04:43:04,572 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:43:04,735 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_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/sv-benchmarks/c/loops-crafted-1/watermelon.c[373,386] [2024-11-28 04:43:04,759 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:43:04,769 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:43:04,779 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_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/sv-benchmarks/c/loops-crafted-1/watermelon.c[373,386] [2024-11-28 04:43:04,785 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:43:04,799 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:43:04,799 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:43:04 WrapperNode [2024-11-28 04:43:04,799 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:43:04,800 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:43:04,801 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:43:04,801 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:43:04,807 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:43:04" (1/1) ... [2024-11-28 04:43:04,814 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:43:04" (1/1) ... [2024-11-28 04:43:04,830 INFO L138 Inliner]: procedures = 15, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 64 [2024-11-28 04:43:04,830 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:43:04,831 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:43:04,831 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:43:04,831 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:43:04,839 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:43:04" (1/1) ... [2024-11-28 04:43:04,839 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:43:04" (1/1) ... [2024-11-28 04:43:04,844 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:43:04" (1/1) ... [2024-11-28 04:43:04,854 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]. [2024-11-28 04:43:04,854 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:43:04" (1/1) ... [2024-11-28 04:43:04,854 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:43:04" (1/1) ... [2024-11-28 04:43:04,857 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:43:04" (1/1) ... [2024-11-28 04:43:04,858 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:43:04" (1/1) ... [2024-11-28 04:43:04,861 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:43:04" (1/1) ... [2024-11-28 04:43:04,862 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:43:04" (1/1) ... [2024-11-28 04:43:04,863 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:43:04" (1/1) ... [2024-11-28 04:43:04,865 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:43:04,865 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:43:04,865 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:43:04,866 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:43:04,866 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:43:04" (1/1) ... [2024-11-28 04:43:04,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:43:04,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:43:04,895 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:43:04,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:43:04,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:43:04,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:43:04,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:43:04,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:43:04,985 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:43:04,987 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:43:05,154 INFO L? ?]: Removed 27 outVars from TransFormulas that were not future-live. [2024-11-28 04:43:05,154 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:43:05,164 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:43:05,165 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 04:43:05,165 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:43:05 BoogieIcfgContainer [2024-11-28 04:43:05,165 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:43:05,167 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:43:05,167 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:43:05,173 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:43:05,173 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:43:04" (1/3) ... [2024-11-28 04:43:05,174 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f6129e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:43:05, skipping insertion in model container [2024-11-28 04:43:05,174 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:43:04" (2/3) ... [2024-11-28 04:43:05,174 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f6129e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:43:05, skipping insertion in model container [2024-11-28 04:43:05,174 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:43:05" (3/3) ... [2024-11-28 04:43:05,175 INFO L128 eAbstractionObserver]: Analyzing ICFG watermelon.c [2024-11-28 04:43:05,191 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:43:05,193 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG watermelon.c that has 1 procedures, 25 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-28 04:43:05,256 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:43:05,272 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;@dc0d4c1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:43:05,273 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 04:43:05,277 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 24 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:05,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-28 04:43:05,283 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:43:05,284 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:43:05,284 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:43:05,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:43:05,291 INFO L85 PathProgramCache]: Analyzing trace with hash -308913183, now seen corresponding path program 1 times [2024-11-28 04:43:05,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:43:05,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28259611] [2024-11-28 04:43:05,299 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:05,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:43:05,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:05,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:05,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:43:05,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28259611] [2024-11-28 04:43:05,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28259611] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:43:05,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:43:05,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 04:43:05,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234276909] [2024-11-28 04:43:05,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:43:05,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:43:05,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:05,943 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:43:05,944 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:43:05,946 INFO L87 Difference]: Start difference. First operand has 25 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 24 states have internal predecessors, (34), 0 states have call successors, (0), 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 8 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:06,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:43:06,109 INFO L93 Difference]: Finished difference Result 58 states and 77 transitions. [2024-11-28 04:43:06,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:43:06,112 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2024-11-28 04:43:06,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:43:06,122 INFO L225 Difference]: With dead ends: 58 [2024-11-28 04:43:06,122 INFO L226 Difference]: Without dead ends: 30 [2024-11-28 04:43:06,125 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:43:06,132 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 13 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:43:06,132 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 153 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:43:06,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-28 04:43:06,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2024-11-28 04:43:06,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 26 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:06,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2024-11-28 04:43:06,160 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 11 [2024-11-28 04:43:06,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:43:06,161 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2024-11-28 04:43:06,161 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:06,161 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2024-11-28 04:43:06,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-28 04:43:06,162 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:43:06,162 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:43:06,162 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 04:43:06,162 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:43:06,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:43:06,163 INFO L85 PathProgramCache]: Analyzing trace with hash 754398870, now seen corresponding path program 1 times [2024-11-28 04:43:06,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:43:06,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280677928] [2024-11-28 04:43:06,164 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:06,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:43:06,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:06,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:06,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:43:06,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280677928] [2024-11-28 04:43:06,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280677928] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:43:06,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:43:06,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:43:06,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105336944] [2024-11-28 04:43:06,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:43:06,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:43:06,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:06,265 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:43:06,266 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:43:06,266 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:06,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:43:06,303 INFO L93 Difference]: Finished difference Result 39 states and 47 transitions. [2024-11-28 04:43:06,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:43:06,304 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2024-11-28 04:43:06,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:43:06,304 INFO L225 Difference]: With dead ends: 39 [2024-11-28 04:43:06,304 INFO L226 Difference]: Without dead ends: 31 [2024-11-28 04:43:06,305 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:43:06,306 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 1 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:43:06,306 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 38 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:43:06,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-28 04:43:06,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2024-11-28 04:43:06,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.25) internal successors, (35), 28 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) [2024-11-28 04:43:06,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2024-11-28 04:43:06,312 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 14 [2024-11-28 04:43:06,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:43:06,312 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2024-11-28 04:43:06,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:06,313 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2024-11-28 04:43:06,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-28 04:43:06,313 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:43:06,313 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:43:06,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 04:43:06,314 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:43:06,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:43:06,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1740354981, now seen corresponding path program 1 times [2024-11-28 04:43:06,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:43:06,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620365170] [2024-11-28 04:43:06,315 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:06,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:43:06,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:06,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:06,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:43:06,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620365170] [2024-11-28 04:43:06,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620365170] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:43:06,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:43:06,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:43:06,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816074661] [2024-11-28 04:43:06,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:43:06,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:43:06,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:06,440 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:43:06,440 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:43:06,441 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:06,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:43:06,471 INFO L93 Difference]: Finished difference Result 54 states and 65 transitions. [2024-11-28 04:43:06,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:43:06,472 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2024-11-28 04:43:06,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:43:06,472 INFO L225 Difference]: With dead ends: 54 [2024-11-28 04:43:06,472 INFO L226 Difference]: Without dead ends: 31 [2024-11-28 04:43:06,473 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:43:06,474 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 1 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:43:06,474 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 38 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:43:06,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-28 04:43:06,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2024-11-28 04:43:06,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 29 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:06,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2024-11-28 04:43:06,479 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 14 [2024-11-28 04:43:06,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:43:06,479 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2024-11-28 04:43:06,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:06,480 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2024-11-28 04:43:06,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-28 04:43:06,480 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:43:06,480 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:43:06,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 04:43:06,481 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:43:06,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:43:06,481 INFO L85 PathProgramCache]: Analyzing trace with hash -493302734, now seen corresponding path program 1 times [2024-11-28 04:43:06,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:43:06,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784171707] [2024-11-28 04:43:06,482 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:06,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:43:06,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:06,756 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:43:06,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:43:06,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784171707] [2024-11-28 04:43:06,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784171707] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:43:06,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:43:06,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:43:06,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918461273] [2024-11-28 04:43:06,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:43:06,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:43:06,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:06,757 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:43:06,757 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:43:06,757 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:06,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:43:06,834 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2024-11-28 04:43:06,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:43:06,835 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2024-11-28 04:43:06,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:43:06,835 INFO L225 Difference]: With dead ends: 43 [2024-11-28 04:43:06,835 INFO L226 Difference]: Without dead ends: 30 [2024-11-28 04:43:06,836 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:43:06,839 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 4 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:43:06,841 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 60 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:43:06,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-28 04:43:06,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-11-28 04:43:06,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.206896551724138) internal successors, (35), 29 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) [2024-11-28 04:43:06,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2024-11-28 04:43:06,849 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 16 [2024-11-28 04:43:06,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:43:06,849 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2024-11-28 04:43:06,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:06,850 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2024-11-28 04:43:06,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-28 04:43:06,854 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:43:06,854 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:43:06,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 04:43:06,855 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:43:06,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:43:06,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1170722143, now seen corresponding path program 1 times [2024-11-28 04:43:06,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:43:06,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22490070] [2024-11-28 04:43:06,857 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:06,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:43:06,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:07,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:43:07,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:43:07,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22490070] [2024-11-28 04:43:07,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22490070] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:43:07,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:43:07,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:43:07,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924432354] [2024-11-28 04:43:07,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:43:07,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:43:07,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:07,192 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:43:07,192 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:43:07,192 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:07,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:43:07,248 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2024-11-28 04:43:07,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:43:07,249 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2024-11-28 04:43:07,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:43:07,249 INFO L225 Difference]: With dead ends: 35 [2024-11-28 04:43:07,249 INFO L226 Difference]: Without dead ends: 30 [2024-11-28 04:43:07,250 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:43:07,250 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 5 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:43:07,251 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 38 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:43:07,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-28 04:43:07,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-11-28 04:43:07,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 29 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:07,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2024-11-28 04:43:07,262 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 16 [2024-11-28 04:43:07,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:43:07,262 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2024-11-28 04:43:07,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:07,263 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2024-11-28 04:43:07,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-28 04:43:07,264 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:43:07,264 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] [2024-11-28 04:43:07,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 04:43:07,265 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:43:07,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:43:07,265 INFO L85 PathProgramCache]: Analyzing trace with hash -403896778, now seen corresponding path program 1 times [2024-11-28 04:43:07,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:43:07,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412123482] [2024-11-28 04:43:07,266 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:07,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:43:07,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:07,333 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:43:07,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:43:07,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412123482] [2024-11-28 04:43:07,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412123482] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:43:07,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475204671] [2024-11-28 04:43:07,334 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:07,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:07,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:43:07,339 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:43:07,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:43:07,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:07,409 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 04:43:07,414 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:43:07,496 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:43:07,496 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:43:07,529 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:43:07,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [475204671] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:43:07,529 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:43:07,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-28 04:43:07,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941914008] [2024-11-28 04:43:07,529 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:43:07,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:43:07,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:07,533 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:43:07,533 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:43:07,534 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:07,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:43:07,583 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2024-11-28 04:43:07,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:43:07,586 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 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 21 [2024-11-28 04:43:07,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:43:07,586 INFO L225 Difference]: With dead ends: 56 [2024-11-28 04:43:07,586 INFO L226 Difference]: Without dead ends: 33 [2024-11-28 04:43:07,587 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:43:07,587 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 1 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:43:07,588 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 63 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:43:07,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-28 04:43:07,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2024-11-28 04:43:07,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 31 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:07,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2024-11-28 04:43:07,601 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 21 [2024-11-28 04:43:07,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:43:07,602 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2024-11-28 04:43:07,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:07,602 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2024-11-28 04:43:07,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-28 04:43:07,603 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:43:07,604 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:43:07,611 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 04:43:07,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-28 04:43:07,806 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:43:07,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:43:07,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1787090610, now seen corresponding path program 2 times [2024-11-28 04:43:07,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:43:07,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246357070] [2024-11-28 04:43:07,807 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:43:07,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:43:07,830 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:43:07,830 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:43:07,902 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:43:07,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:43:07,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246357070] [2024-11-28 04:43:07,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246357070] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:43:07,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994493289] [2024-11-28 04:43:07,904 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:43:07,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:07,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:43:07,906 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:43:07,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:43:07,974 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:43:07,974 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:43:07,976 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 04:43:07,977 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:43:08,028 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:43:08,030 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:43:08,071 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:43:08,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994493289] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:43:08,071 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:43:08,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-28 04:43:08,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364297357] [2024-11-28 04:43:08,072 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:43:08,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:43:08,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:08,076 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:43:08,077 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:43:08,077 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:08,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:43:08,117 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2024-11-28 04:43:08,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:43:08,118 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 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 23 [2024-11-28 04:43:08,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:43:08,118 INFO L225 Difference]: With dead ends: 46 [2024-11-28 04:43:08,119 INFO L226 Difference]: Without dead ends: 38 [2024-11-28 04:43:08,119 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:43:08,119 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 2 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:43:08,120 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 63 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:43:08,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-28 04:43:08,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2024-11-28 04:43:08,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 35 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:08,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2024-11-28 04:43:08,132 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 23 [2024-11-28 04:43:08,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:43:08,133 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2024-11-28 04:43:08,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:08,133 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2024-11-28 04:43:08,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-28 04:43:08,134 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:43:08,134 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:43:08,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 04:43:08,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-28 04:43:08,335 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:43:08,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:43:08,336 INFO L85 PathProgramCache]: Analyzing trace with hash -213985970, now seen corresponding path program 3 times [2024-11-28 04:43:08,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:43:08,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665855729] [2024-11-28 04:43:08,336 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:43:08,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:43:08,363 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-28 04:43:08,365 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:43:08,480 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:43:08,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:43:08,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665855729] [2024-11-28 04:43:08,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665855729] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:43:08,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87150755] [2024-11-28 04:43:08,497 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:43:08,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:08,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:43:08,501 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:43:08,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:43:08,575 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-28 04:43:08,575 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:43:08,577 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 04:43:08,579 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:43:09,119 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:43:09,119 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:43:09,476 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:43:09,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [87150755] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:43:09,476 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:43:09,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 9] total 18 [2024-11-28 04:43:09,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443943670] [2024-11-28 04:43:09,476 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:43:09,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 04:43:09,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:09,480 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 04:43:09,481 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2024-11-28 04:43:09,481 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 18 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:09,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:43:09,738 INFO L93 Difference]: Finished difference Result 56 states and 62 transitions. [2024-11-28 04:43:09,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:43:09,739 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 18 states have internal predecessors, (43), 0 states have call successors, (0), 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 25 [2024-11-28 04:43:09,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:43:09,740 INFO L225 Difference]: With dead ends: 56 [2024-11-28 04:43:09,740 INFO L226 Difference]: Without dead ends: 40 [2024-11-28 04:43:09,740 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=130, Invalid=376, Unknown=0, NotChecked=0, Total=506 [2024-11-28 04:43:09,741 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:43:09,741 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 94 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:43:09,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-28 04:43:09,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2024-11-28 04:43:09,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.1578947368421053) internal successors, (44), 38 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:09,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2024-11-28 04:43:09,748 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 25 [2024-11-28 04:43:09,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:43:09,748 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2024-11-28 04:43:09,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 18 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:09,749 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2024-11-28 04:43:09,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-28 04:43:09,749 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:43:09,750 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:43:09,758 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 04:43:09,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:09,950 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:43:09,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:43:09,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1292312626, now seen corresponding path program 1 times [2024-11-28 04:43:09,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:43:09,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240850749] [2024-11-28 04:43:09,951 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:09,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:43:09,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:10,082 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:43:10,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:43:10,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240850749] [2024-11-28 04:43:10,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240850749] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:43:10,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242416692] [2024-11-28 04:43:10,083 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:10,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:10,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:43:10,085 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:43:10,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 04:43:10,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:10,142 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 04:43:10,143 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:43:10,239 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:43:10,240 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:43:10,289 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:43:10,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242416692] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:43:10,290 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:43:10,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-28 04:43:10,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021348899] [2024-11-28 04:43:10,291 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:43:10,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 04:43:10,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:10,293 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 04:43:10,293 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:43:10,293 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:10,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:43:10,353 INFO L93 Difference]: Finished difference Result 53 states and 60 transitions. [2024-11-28 04:43:10,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:43:10,353 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 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 25 [2024-11-28 04:43:10,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:43:10,355 INFO L225 Difference]: With dead ends: 53 [2024-11-28 04:43:10,355 INFO L226 Difference]: Without dead ends: 47 [2024-11-28 04:43:10,355 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:43:10,356 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 1 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:43:10,356 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 103 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:43:10,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-28 04:43:10,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 41. [2024-11-28 04:43:10,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.175) internal successors, (47), 40 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:10,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2024-11-28 04:43:10,372 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 25 [2024-11-28 04:43:10,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:43:10,372 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2024-11-28 04:43:10,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:10,373 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2024-11-28 04:43:10,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-28 04:43:10,373 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:43:10,373 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:43:10,383 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 04:43:10,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:10,574 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:43:10,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:43:10,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1235054324, now seen corresponding path program 1 times [2024-11-28 04:43:10,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:43:10,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213483364] [2024-11-28 04:43:10,575 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:10,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:43:10,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:10,720 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-28 04:43:10,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:43:10,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213483364] [2024-11-28 04:43:10,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213483364] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:43:10,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:43:10,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 04:43:10,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165236049] [2024-11-28 04:43:10,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:43:10,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:43:10,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:10,722 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:43:10,723 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:43:10,723 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:10,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:43:10,764 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2024-11-28 04:43:10,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:43:10,765 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 25 [2024-11-28 04:43:10,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:43:10,767 INFO L225 Difference]: With dead ends: 48 [2024-11-28 04:43:10,767 INFO L226 Difference]: Without dead ends: 41 [2024-11-28 04:43:10,767 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:43:10,768 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:43:10,769 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 100 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:43:10,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-28 04:43:10,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2024-11-28 04:43:10,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.125) internal successors, (45), 40 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:10,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2024-11-28 04:43:10,777 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 25 [2024-11-28 04:43:10,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:43:10,777 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2024-11-28 04:43:10,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:10,780 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2024-11-28 04:43:10,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-28 04:43:10,782 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:43:10,782 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:43:10,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 04:43:10,783 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:43:10,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:43:10,784 INFO L85 PathProgramCache]: Analyzing trace with hash -868087862, now seen corresponding path program 4 times [2024-11-28 04:43:10,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:43:10,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312180549] [2024-11-28 04:43:10,784 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:43:10,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:43:10,802 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:43:10,802 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:43:11,212 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:11,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:43:11,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312180549] [2024-11-28 04:43:11,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312180549] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:43:11,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452963395] [2024-11-28 04:43:11,213 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:43:11,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:11,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:43:11,217 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:43:11,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 04:43:11,273 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:43:11,273 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:43:11,274 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 04:43:11,276 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:43:11,653 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:11,654 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:43:11,997 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:11,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452963395] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:43:11,998 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:43:11,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 23 [2024-11-28 04:43:12,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614075908] [2024-11-28 04:43:12,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:43:12,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-28 04:43:12,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:12,002 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-28 04:43:12,005 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=392, Unknown=0, NotChecked=0, Total=506 [2024-11-28 04:43:12,005 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand has 23 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 23 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:12,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:43:12,299 INFO L93 Difference]: Finished difference Result 64 states and 69 transitions. [2024-11-28 04:43:12,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 04:43:12,300 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 23 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-11-28 04:43:12,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:43:12,300 INFO L225 Difference]: With dead ends: 64 [2024-11-28 04:43:12,300 INFO L226 Difference]: Without dead ends: 57 [2024-11-28 04:43:12,301 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 39 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=137, Invalid=463, Unknown=0, NotChecked=0, Total=600 [2024-11-28 04:43:12,302 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 9 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:43:12,302 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 157 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:43:12,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-28 04:43:12,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 43. [2024-11-28 04:43:12,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.119047619047619) internal successors, (47), 42 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:12,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2024-11-28 04:43:12,309 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 27 [2024-11-28 04:43:12,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:43:12,309 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2024-11-28 04:43:12,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 23 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:12,309 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2024-11-28 04:43:12,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-28 04:43:12,310 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:43:12,310 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:43:12,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 04:43:12,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:12,514 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:43:12,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:43:12,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1154633750, now seen corresponding path program 2 times [2024-11-28 04:43:12,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:43:12,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121740707] [2024-11-28 04:43:12,515 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:43:12,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:43:12,531 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:43:12,532 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:43:12,916 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:12,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:43:12,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121740707] [2024-11-28 04:43:12,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121740707] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:43:12,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891024562] [2024-11-28 04:43:12,917 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:43:12,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:12,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:43:12,919 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:43:12,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 04:43:12,974 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:43:12,975 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:43:12,976 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 04:43:12,977 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:43:13,344 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:13,344 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:43:13,602 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:13,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891024562] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:43:13,602 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:43:13,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 24 [2024-11-28 04:43:13,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400843923] [2024-11-28 04:43:13,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:43:13,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-28 04:43:13,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:13,604 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-28 04:43:13,604 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=433, Unknown=0, NotChecked=0, Total=552 [2024-11-28 04:43:13,604 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand has 24 states, 24 states have (on average 2.125) internal successors, (51), 24 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) [2024-11-28 04:43:13,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:43:13,845 INFO L93 Difference]: Finished difference Result 62 states and 66 transitions. [2024-11-28 04:43:13,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 04:43:13,846 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.125) internal successors, (51), 24 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 27 [2024-11-28 04:43:13,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:43:13,847 INFO L225 Difference]: With dead ends: 62 [2024-11-28 04:43:13,847 INFO L226 Difference]: Without dead ends: 43 [2024-11-28 04:43:13,847 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 39 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=142, Invalid=508, Unknown=0, NotChecked=0, Total=650 [2024-11-28 04:43:13,848 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 12 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:43:13,848 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 91 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:43:13,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-28 04:43:13,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2024-11-28 04:43:13,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.0975609756097562) internal successors, (45), 41 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:13,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2024-11-28 04:43:13,854 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 27 [2024-11-28 04:43:13,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:43:13,854 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2024-11-28 04:43:13,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.125) internal successors, (51), 24 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) [2024-11-28 04:43:13,855 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2024-11-28 04:43:13,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-28 04:43:13,855 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:43:13,855 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:43:13,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-28 04:43:14,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-28 04:43:14,059 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:43:14,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:43:14,060 INFO L85 PathProgramCache]: Analyzing trace with hash -629923738, now seen corresponding path program 5 times [2024-11-28 04:43:14,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:43:14,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546181268] [2024-11-28 04:43:14,060 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:43:14,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:43:14,075 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-28 04:43:14,075 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:43:14,480 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:14,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:43:14,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546181268] [2024-11-28 04:43:14,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546181268] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:43:14,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346841937] [2024-11-28 04:43:14,481 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:43:14,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:14,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:43:14,483 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:43:14,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 04:43:14,537 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-28 04:43:14,537 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:43:14,539 INFO L256 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-28 04:43:14,540 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:43:15,110 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:15,110 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:43:15,533 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:15,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1346841937] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:43:15,534 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:43:15,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 29 [2024-11-28 04:43:15,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863226298] [2024-11-28 04:43:15,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:43:15,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-28 04:43:15,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:15,535 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-28 04:43:15,535 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=657, Unknown=0, NotChecked=0, Total=812 [2024-11-28 04:43:15,535 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand has 29 states, 29 states have (on average 1.9655172413793103) internal successors, (57), 29 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) [2024-11-28 04:43:15,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:43:15,786 INFO L93 Difference]: Finished difference Result 67 states and 73 transitions. [2024-11-28 04:43:15,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 04:43:15,787 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.9655172413793103) internal successors, (57), 29 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 29 [2024-11-28 04:43:15,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:43:15,788 INFO L225 Difference]: With dead ends: 67 [2024-11-28 04:43:15,788 INFO L226 Difference]: Without dead ends: 46 [2024-11-28 04:43:15,789 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 36 SyntacticMatches, 7 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=166, Invalid=704, Unknown=0, NotChecked=0, Total=870 [2024-11-28 04:43:15,790 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 5 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:43:15,791 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 96 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:43:15,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-28 04:43:15,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2024-11-28 04:43:15,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.1136363636363635) internal successors, (49), 44 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) [2024-11-28 04:43:15,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2024-11-28 04:43:15,800 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 29 [2024-11-28 04:43:15,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:43:15,801 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2024-11-28 04:43:15,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.9655172413793103) internal successors, (57), 29 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) [2024-11-28 04:43:15,801 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2024-11-28 04:43:15,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-28 04:43:15,801 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:43:15,801 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:43:15,810 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 04:43:16,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-28 04:43:16,002 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:43:16,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:43:16,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1613640550, now seen corresponding path program 3 times [2024-11-28 04:43:16,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:43:16,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465436966] [2024-11-28 04:43:16,003 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:43:16,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:43:16,016 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-28 04:43:16,016 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:43:16,430 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:16,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:43:16,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465436966] [2024-11-28 04:43:16,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465436966] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:43:16,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462755769] [2024-11-28 04:43:16,430 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:43:16,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:16,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:43:16,433 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:43:16,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 04:43:16,485 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-28 04:43:16,485 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:43:16,486 INFO L256 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-28 04:43:16,488 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:43:16,935 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:16,935 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:43:17,286 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:17,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462755769] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:43:17,287 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:43:17,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 30 [2024-11-28 04:43:17,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766557143] [2024-11-28 04:43:17,288 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:43:17,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-28 04:43:17,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:17,289 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-28 04:43:17,289 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=700, Unknown=0, NotChecked=0, Total=870 [2024-11-28 04:43:17,290 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand has 30 states, 30 states have (on average 2.033333333333333) internal successors, (61), 30 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) [2024-11-28 04:43:17,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:43:17,537 INFO L93 Difference]: Finished difference Result 59 states and 64 transitions. [2024-11-28 04:43:17,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 04:43:17,538 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.033333333333333) internal successors, (61), 30 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 29 [2024-11-28 04:43:17,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:43:17,539 INFO L225 Difference]: With dead ends: 59 [2024-11-28 04:43:17,539 INFO L226 Difference]: Without dead ends: 52 [2024-11-28 04:43:17,539 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 38 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 466 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=197, Invalid=795, Unknown=0, NotChecked=0, Total=992 [2024-11-28 04:43:17,540 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 10 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:43:17,540 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 90 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:43:17,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-28 04:43:17,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 47. [2024-11-28 04:43:17,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.108695652173913) internal successors, (51), 46 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) [2024-11-28 04:43:17,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2024-11-28 04:43:17,552 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 29 [2024-11-28 04:43:17,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:43:17,552 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2024-11-28 04:43:17,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.033333333333333) internal successors, (61), 30 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) [2024-11-28 04:43:17,553 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2024-11-28 04:43:17,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-28 04:43:17,553 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:43:17,553 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:43:17,562 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 04:43:17,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-28 04:43:17,754 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:43:17,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:43:17,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1096922338, now seen corresponding path program 6 times [2024-11-28 04:43:17,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:43:17,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132515370] [2024-11-28 04:43:17,755 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:43:17,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:43:17,768 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-28 04:43:17,768 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:43:18,154 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:18,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:43:18,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132515370] [2024-11-28 04:43:18,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132515370] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:43:18,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407234427] [2024-11-28 04:43:18,154 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:43:18,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:18,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:43:18,159 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:43:18,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 04:43:18,211 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-28 04:43:18,211 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:43:18,212 INFO L256 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 04:43:18,214 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:43:18,614 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:18,614 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:43:18,950 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:18,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407234427] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:43:18,950 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:43:18,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 29 [2024-11-28 04:43:18,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676561225] [2024-11-28 04:43:18,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:43:18,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-28 04:43:18,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:18,951 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-28 04:43:18,952 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=641, Unknown=0, NotChecked=0, Total=812 [2024-11-28 04:43:18,952 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand has 29 states, 29 states have (on average 2.1724137931034484) internal successors, (63), 29 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:19,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:43:19,224 INFO L93 Difference]: Finished difference Result 72 states and 77 transitions. [2024-11-28 04:43:19,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 04:43:19,225 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.1724137931034484) internal successors, (63), 29 states have internal predecessors, (63), 0 states have call successors, (0), 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 31 [2024-11-28 04:43:19,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:43:19,225 INFO L225 Difference]: With dead ends: 72 [2024-11-28 04:43:19,225 INFO L226 Difference]: Without dead ends: 65 [2024-11-28 04:43:19,226 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 43 SyntacticMatches, 4 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 457 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=198, Invalid=732, Unknown=0, NotChecked=0, Total=930 [2024-11-28 04:43:19,226 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 10 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:43:19,227 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 115 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:43:19,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-28 04:43:19,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 49. [2024-11-28 04:43:19,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.1041666666666667) internal successors, (53), 48 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) [2024-11-28 04:43:19,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2024-11-28 04:43:19,239 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 31 [2024-11-28 04:43:19,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:43:19,240 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2024-11-28 04:43:19,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.1724137931034484) internal successors, (63), 29 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:19,240 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2024-11-28 04:43:19,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-28 04:43:19,240 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:43:19,241 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:43:19,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-28 04:43:19,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-28 04:43:19,441 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:43:19,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:43:19,442 INFO L85 PathProgramCache]: Analyzing trace with hash -262374014, now seen corresponding path program 4 times [2024-11-28 04:43:19,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:43:19,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315515715] [2024-11-28 04:43:19,442 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:43:19,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:43:19,453 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:43:19,454 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:43:19,747 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:19,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:43:19,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315515715] [2024-11-28 04:43:19,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315515715] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:43:19,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091019572] [2024-11-28 04:43:19,748 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:43:19,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:19,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:43:19,750 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:43:19,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 04:43:19,811 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:43:19,811 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:43:19,812 INFO L256 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 04:43:19,814 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:43:20,208 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:20,209 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:43:20,522 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:20,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091019572] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:43:20,522 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:43:20,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 26 [2024-11-28 04:43:20,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918829555] [2024-11-28 04:43:20,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:43:20,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-28 04:43:20,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:20,524 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-28 04:43:20,524 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=513, Unknown=0, NotChecked=0, Total=650 [2024-11-28 04:43:20,524 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand has 26 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 26 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) [2024-11-28 04:43:20,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:43:20,726 INFO L93 Difference]: Finished difference Result 70 states and 74 transitions. [2024-11-28 04:43:20,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 04:43:20,727 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 26 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 31 [2024-11-28 04:43:20,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:43:20,727 INFO L225 Difference]: With dead ends: 70 [2024-11-28 04:43:20,727 INFO L226 Difference]: Without dead ends: 49 [2024-11-28 04:43:20,728 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 44 SyntacticMatches, 5 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=158, Invalid=598, Unknown=0, NotChecked=0, Total=756 [2024-11-28 04:43:20,728 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 15 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:43:20,728 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 96 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:43:20,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-11-28 04:43:20,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2024-11-28 04:43:20,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.0851063829787233) internal successors, (51), 47 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) [2024-11-28 04:43:20,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 51 transitions. [2024-11-28 04:43:20,735 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 51 transitions. Word has length 31 [2024-11-28 04:43:20,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:43:20,735 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 51 transitions. [2024-11-28 04:43:20,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 26 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) [2024-11-28 04:43:20,735 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 51 transitions. [2024-11-28 04:43:20,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-28 04:43:20,736 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:43:20,736 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:43:20,745 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 04:43:20,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-28 04:43:20,940 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:43:20,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:43:20,941 INFO L85 PathProgramCache]: Analyzing trace with hash -2040731778, now seen corresponding path program 7 times [2024-11-28 04:43:20,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:43:20,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144621629] [2024-11-28 04:43:20,941 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:43:20,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:43:20,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:21,409 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 9 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:21,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:43:21,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144621629] [2024-11-28 04:43:21,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144621629] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:43:21,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409859956] [2024-11-28 04:43:21,410 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:43:21,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:21,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:43:21,412 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:43:21,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 04:43:21,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:21,476 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-28 04:43:21,478 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:43:22,050 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:22,050 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:43:22,462 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:22,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409859956] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:43:22,462 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:43:22,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 36 [2024-11-28 04:43:22,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475476517] [2024-11-28 04:43:22,463 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:43:22,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-28 04:43:22,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:22,464 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-28 04:43:22,464 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=1027, Unknown=0, NotChecked=0, Total=1260 [2024-11-28 04:43:22,465 INFO L87 Difference]: Start difference. First operand 48 states and 51 transitions. Second operand has 36 states, 36 states have (on average 1.9722222222222223) internal successors, (71), 36 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:22,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:43:22,819 INFO L93 Difference]: Finished difference Result 75 states and 81 transitions. [2024-11-28 04:43:22,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-28 04:43:22,820 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.9722222222222223) internal successors, (71), 36 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2024-11-28 04:43:22,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:43:22,820 INFO L225 Difference]: With dead ends: 75 [2024-11-28 04:43:22,820 INFO L226 Difference]: Without dead ends: 52 [2024-11-28 04:43:22,821 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 40 SyntacticMatches, 6 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 728 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=257, Invalid=1149, Unknown=0, NotChecked=0, Total=1406 [2024-11-28 04:43:22,822 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 10 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:43:22,822 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 112 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:43:22,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-28 04:43:22,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2024-11-28 04:43:22,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.1) internal successors, (55), 50 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) [2024-11-28 04:43:22,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2024-11-28 04:43:22,828 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 33 [2024-11-28 04:43:22,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:43:22,828 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2024-11-28 04:43:22,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.9722222222222223) internal successors, (71), 36 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:22,829 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2024-11-28 04:43:22,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-28 04:43:22,829 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:43:22,829 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:43:22,840 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-28 04:43:23,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 04:43:23,030 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:43:23,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:43:23,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1379328766, now seen corresponding path program 5 times [2024-11-28 04:43:23,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:43:23,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724938163] [2024-11-28 04:43:23,030 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:43:23,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:43:23,040 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-28 04:43:23,040 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:43:23,402 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:23,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:43:23,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724938163] [2024-11-28 04:43:23,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724938163] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:43:23,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309030520] [2024-11-28 04:43:23,403 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:43:23,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:23,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:43:23,405 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:43:23,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 04:43:23,461 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-28 04:43:23,462 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:43:23,463 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-28 04:43:23,464 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:43:23,989 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:23,990 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:43:24,385 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:24,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [309030520] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:43:24,385 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:43:24,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2024-11-28 04:43:24,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930773357] [2024-11-28 04:43:24,386 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:43:24,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-28 04:43:24,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:24,386 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-28 04:43:24,387 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=856, Unknown=0, NotChecked=0, Total=1056 [2024-11-28 04:43:24,387 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand has 33 states, 33 states have (on average 2.0303030303030303) internal successors, (67), 33 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:24,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:43:24,600 INFO L93 Difference]: Finished difference Result 65 states and 70 transitions. [2024-11-28 04:43:24,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-28 04:43:24,600 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.0303030303030303) internal successors, (67), 33 states have internal predecessors, (67), 0 states have call successors, (0), 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 33 [2024-11-28 04:43:24,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:43:24,601 INFO L225 Difference]: With dead ends: 65 [2024-11-28 04:43:24,601 INFO L226 Difference]: Without dead ends: 58 [2024-11-28 04:43:24,601 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 42 SyntacticMatches, 7 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 492 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=230, Invalid=960, Unknown=0, NotChecked=0, Total=1190 [2024-11-28 04:43:24,602 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 9 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:43:24,602 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 84 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:43:24,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-28 04:43:24,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 53. [2024-11-28 04:43:24,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.0961538461538463) internal successors, (57), 52 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) [2024-11-28 04:43:24,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2024-11-28 04:43:24,610 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 33 [2024-11-28 04:43:24,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:43:24,611 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2024-11-28 04:43:24,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.0303030303030303) internal successors, (67), 33 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:24,611 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2024-11-28 04:43:24,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-28 04:43:24,611 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:43:24,612 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:43:24,620 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-28 04:43:24,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-28 04:43:24,813 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:43:24,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:43:24,813 INFO L85 PathProgramCache]: Analyzing trace with hash -617357830, now seen corresponding path program 8 times [2024-11-28 04:43:24,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:43:24,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750161653] [2024-11-28 04:43:24,814 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:43:24,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:43:24,827 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:43:24,828 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:43:25,248 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 9 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:25,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:43:25,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750161653] [2024-11-28 04:43:25,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750161653] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:43:25,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559974856] [2024-11-28 04:43:25,248 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:43:25,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:25,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:43:25,250 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:43:25,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 04:43:25,305 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:43:25,305 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:43:25,306 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 04:43:25,309 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:43:25,760 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:25,761 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:43:26,083 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:26,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559974856] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:43:26,083 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:43:26,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 34 [2024-11-28 04:43:26,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974696473] [2024-11-28 04:43:26,084 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:43:26,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-28 04:43:26,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:26,085 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-28 04:43:26,085 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=892, Unknown=0, NotChecked=0, Total=1122 [2024-11-28 04:43:26,085 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand has 34 states, 34 states have (on average 2.1470588235294117) internal successors, (73), 34 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:26,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:43:26,306 INFO L93 Difference]: Finished difference Result 80 states and 85 transitions. [2024-11-28 04:43:26,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-28 04:43:26,306 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.1470588235294117) internal successors, (73), 34 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-11-28 04:43:26,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:43:26,307 INFO L225 Difference]: With dead ends: 80 [2024-11-28 04:43:26,307 INFO L226 Difference]: Without dead ends: 73 [2024-11-28 04:43:26,307 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 47 SyntacticMatches, 5 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 668 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=261, Invalid=999, Unknown=0, NotChecked=0, Total=1260 [2024-11-28 04:43:26,308 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 16 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:43:26,308 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 96 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:43:26,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-28 04:43:26,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 55. [2024-11-28 04:43:26,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.0925925925925926) internal successors, (59), 54 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:26,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2024-11-28 04:43:26,316 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 35 [2024-11-28 04:43:26,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:43:26,316 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2024-11-28 04:43:26,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.1470588235294117) internal successors, (73), 34 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:26,316 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2024-11-28 04:43:26,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-28 04:43:26,317 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:43:26,317 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:43:26,326 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-28 04:43:26,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:26,517 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:43:26,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:43:26,518 INFO L85 PathProgramCache]: Analyzing trace with hash -2097699046, now seen corresponding path program 6 times [2024-11-28 04:43:26,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:43:26,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705403728] [2024-11-28 04:43:26,518 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:43:26,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:43:26,527 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-28 04:43:26,528 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:43:26,936 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 18 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:26,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:43:26,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705403728] [2024-11-28 04:43:26,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705403728] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:43:26,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83837218] [2024-11-28 04:43:26,937 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:43:26,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:26,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:43:26,940 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:43:26,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 04:43:26,996 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-28 04:43:26,996 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:43:26,997 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 04:43:26,998 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:43:27,486 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:27,486 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:43:27,900 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:27,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83837218] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:43:27,901 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:43:27,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 34 [2024-11-28 04:43:27,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492672586] [2024-11-28 04:43:27,901 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:43:27,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-28 04:43:27,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:27,902 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-28 04:43:27,902 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=896, Unknown=0, NotChecked=0, Total=1122 [2024-11-28 04:43:27,902 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand has 34 states, 34 states have (on average 2.088235294117647) internal successors, (71), 34 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:28,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:43:28,201 INFO L93 Difference]: Finished difference Result 78 states and 82 transitions. [2024-11-28 04:43:28,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-28 04:43:28,201 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.088235294117647) internal successors, (71), 34 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-11-28 04:43:28,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:43:28,202 INFO L225 Difference]: With dead ends: 78 [2024-11-28 04:43:28,202 INFO L226 Difference]: Without dead ends: 55 [2024-11-28 04:43:28,203 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 48 SyntacticMatches, 4 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 635 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=253, Invalid=1007, Unknown=0, NotChecked=0, Total=1260 [2024-11-28 04:43:28,203 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:43:28,203 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 115 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:43:28,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-28 04:43:28,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2024-11-28 04:43:28,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.0754716981132075) internal successors, (57), 53 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) [2024-11-28 04:43:28,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2024-11-28 04:43:28,211 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 35 [2024-11-28 04:43:28,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:43:28,212 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2024-11-28 04:43:28,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.088235294117647) internal successors, (71), 34 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:28,212 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2024-11-28 04:43:28,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-28 04:43:28,212 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:43:28,212 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:43:28,221 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-28 04:43:28,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:28,416 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:43:28,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:43:28,417 INFO L85 PathProgramCache]: Analyzing trace with hash -196531562, now seen corresponding path program 9 times [2024-11-28 04:43:28,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:43:28,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959769168] [2024-11-28 04:43:28,417 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:43:28,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:43:28,433 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-28 04:43:28,433 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:43:28,931 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 16 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:28,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:43:28,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959769168] [2024-11-28 04:43:28,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959769168] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:43:28,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225984041] [2024-11-28 04:43:28,931 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:43:28,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:28,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:43:28,933 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:43:28,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 04:43:28,996 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-28 04:43:28,996 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:43:28,997 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-28 04:43:28,999 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:43:29,648 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 25 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:29,648 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:43:30,119 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 25 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:30,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225984041] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:43:30,119 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:43:30,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2024-11-28 04:43:30,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649078382] [2024-11-28 04:43:30,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:43:30,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-28 04:43:30,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:30,121 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-28 04:43:30,121 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=299, Invalid=1341, Unknown=0, NotChecked=0, Total=1640 [2024-11-28 04:43:30,121 INFO L87 Difference]: Start difference. First operand 54 states and 57 transitions. Second operand has 41 states, 41 states have (on average 1.975609756097561) internal successors, (81), 41 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:30,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:43:30,458 INFO L93 Difference]: Finished difference Result 83 states and 89 transitions. [2024-11-28 04:43:30,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-28 04:43:30,458 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.975609756097561) internal successors, (81), 41 states have internal predecessors, (81), 0 states have call successors, (0), 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 [2024-11-28 04:43:30,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:43:30,459 INFO L225 Difference]: With dead ends: 83 [2024-11-28 04:43:30,459 INFO L226 Difference]: Without dead ends: 58 [2024-11-28 04:43:30,460 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 45 SyntacticMatches, 6 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 970 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=324, Invalid=1482, Unknown=0, NotChecked=0, Total=1806 [2024-11-28 04:43:30,460 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 10 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:43:30,461 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 142 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:43:30,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-28 04:43:30,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2024-11-28 04:43:30,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.0892857142857142) internal successors, (61), 56 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) [2024-11-28 04:43:30,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2024-11-28 04:43:30,470 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 37 [2024-11-28 04:43:30,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:43:30,470 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2024-11-28 04:43:30,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.975609756097561) internal successors, (81), 41 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:30,471 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2024-11-28 04:43:30,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-28 04:43:30,471 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:43:30,471 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:43:30,478 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-28 04:43:30,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:30,672 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:43:30,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:43:30,672 INFO L85 PathProgramCache]: Analyzing trace with hash -34935146, now seen corresponding path program 7 times [2024-11-28 04:43:30,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:43:30,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141118267] [2024-11-28 04:43:30,672 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:43:30,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:43:30,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:31,181 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 16 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:31,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:43:31,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141118267] [2024-11-28 04:43:31,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141118267] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:43:31,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190332724] [2024-11-28 04:43:31,182 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:43:31,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:31,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:43:31,186 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:43:31,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 04:43:31,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:31,243 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-28 04:43:31,244 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:43:31,766 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 25 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:31,766 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:43:32,170 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 25 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:32,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190332724] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:43:32,170 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:43:32,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2024-11-28 04:43:32,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586871156] [2024-11-28 04:43:32,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:43:32,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-28 04:43:32,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:32,171 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-28 04:43:32,172 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=295, Invalid=1265, Unknown=0, NotChecked=0, Total=1560 [2024-11-28 04:43:32,172 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand has 40 states, 40 states have (on average 2.025) internal successors, (81), 40 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:32,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:43:32,388 INFO L93 Difference]: Finished difference Result 71 states and 76 transitions. [2024-11-28 04:43:32,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-28 04:43:32,388 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.025) internal successors, (81), 40 states have internal predecessors, (81), 0 states have call successors, (0), 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 [2024-11-28 04:43:32,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:43:32,389 INFO L225 Difference]: With dead ends: 71 [2024-11-28 04:43:32,389 INFO L226 Difference]: Without dead ends: 64 [2024-11-28 04:43:32,390 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 46 SyntacticMatches, 6 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 931 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=330, Invalid=1392, Unknown=0, NotChecked=0, Total=1722 [2024-11-28 04:43:32,391 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 11 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:43:32,391 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 92 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:43:32,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-28 04:43:32,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 59. [2024-11-28 04:43:32,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.0862068965517242) internal successors, (63), 58 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:32,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2024-11-28 04:43:32,399 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 37 [2024-11-28 04:43:32,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:43:32,399 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2024-11-28 04:43:32,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.025) internal successors, (81), 40 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:32,400 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2024-11-28 04:43:32,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-28 04:43:32,400 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:43:32,400 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:43:32,406 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-28 04:43:32,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-28 04:43:32,601 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:43:32,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:43:32,601 INFO L85 PathProgramCache]: Analyzing trace with hash 2139652882, now seen corresponding path program 10 times [2024-11-28 04:43:32,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:43:32,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874915174] [2024-11-28 04:43:32,601 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:43:32,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:43:32,610 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:43:32,610 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:43:32,976 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 25 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:32,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:43:32,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874915174] [2024-11-28 04:43:32,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874915174] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:43:32,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124846237] [2024-11-28 04:43:32,976 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:43:32,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:32,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:43:32,978 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:43:32,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-28 04:43:33,032 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:43:33,032 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:43:33,033 INFO L256 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-28 04:43:33,034 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:43:33,554 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 25 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:33,554 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:43:33,952 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 36 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:33,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124846237] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:43:33,953 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:43:33,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 36 [2024-11-28 04:43:33,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109055160] [2024-11-28 04:43:33,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:43:33,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-28 04:43:33,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:33,954 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-28 04:43:33,954 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=1006, Unknown=0, NotChecked=0, Total=1260 [2024-11-28 04:43:33,954 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand has 36 states, 36 states have (on average 2.111111111111111) internal successors, (76), 36 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:34,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:43:34,189 INFO L93 Difference]: Finished difference Result 88 states and 93 transitions. [2024-11-28 04:43:34,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-28 04:43:34,190 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.111111111111111) internal successors, (76), 36 states have internal predecessors, (76), 0 states have call successors, (0), 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 [2024-11-28 04:43:34,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:43:34,190 INFO L225 Difference]: With dead ends: 88 [2024-11-28 04:43:34,190 INFO L226 Difference]: Without dead ends: 81 [2024-11-28 04:43:34,190 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 51 SyntacticMatches, 8 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 621 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=287, Invalid=1119, Unknown=0, NotChecked=0, Total=1406 [2024-11-28 04:43:34,191 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 14 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:43:34,191 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 105 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:43:34,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-28 04:43:34,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 61. [2024-11-28 04:43:34,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.0833333333333333) internal successors, (65), 60 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:34,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2024-11-28 04:43:34,199 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 39 [2024-11-28 04:43:34,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:43:34,200 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2024-11-28 04:43:34,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.111111111111111) internal successors, (76), 36 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:34,200 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2024-11-28 04:43:34,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-28 04:43:34,200 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:43:34,200 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:43:34,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-28 04:43:34,400 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-28 04:43:34,401 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:43:34,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:43:34,401 INFO L85 PathProgramCache]: Analyzing trace with hash 299314354, now seen corresponding path program 8 times [2024-11-28 04:43:34,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:43:34,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004932667] [2024-11-28 04:43:34,401 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:43:34,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:43:34,413 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:43:34,413 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:43:34,888 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 27 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:34,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:43:34,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004932667] [2024-11-28 04:43:34,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004932667] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:43:34,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591972029] [2024-11-28 04:43:34,889 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:43:34,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:34,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:43:34,891 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:43:34,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-28 04:43:34,953 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:43:34,953 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:43:34,954 INFO L256 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-28 04:43:34,955 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:43:35,473 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 36 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:35,473 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:43:35,830 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 36 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:35,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591972029] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:43:35,831 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:43:35,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 39 [2024-11-28 04:43:35,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897579509] [2024-11-28 04:43:35,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:43:35,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-28 04:43:35,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:35,832 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-28 04:43:35,832 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=293, Invalid=1189, Unknown=0, NotChecked=0, Total=1482 [2024-11-28 04:43:35,832 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand has 39 states, 39 states have (on average 2.076923076923077) internal successors, (81), 39 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:36,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:43:36,127 INFO L93 Difference]: Finished difference Result 86 states and 90 transitions. [2024-11-28 04:43:36,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-28 04:43:36,127 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.076923076923077) internal successors, (81), 39 states have internal predecessors, (81), 0 states have call successors, (0), 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 [2024-11-28 04:43:36,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:43:36,128 INFO L225 Difference]: With dead ends: 86 [2024-11-28 04:43:36,128 INFO L226 Difference]: Without dead ends: 61 [2024-11-28 04:43:36,128 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 52 SyntacticMatches, 5 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 880 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=322, Invalid=1318, Unknown=0, NotChecked=0, Total=1640 [2024-11-28 04:43:36,129 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:43:36,129 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 146 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:43:36,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-28 04:43:36,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2024-11-28 04:43:36,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.0677966101694916) internal successors, (63), 59 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:36,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2024-11-28 04:43:36,137 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 39 [2024-11-28 04:43:36,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:43:36,138 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2024-11-28 04:43:36,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.076923076923077) internal successors, (81), 39 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:36,138 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2024-11-28 04:43:36,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-28 04:43:36,138 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:43:36,138 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:43:36,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-28 04:43:36,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:36,339 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:43:36,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:43:36,339 INFO L85 PathProgramCache]: Analyzing trace with hash -704058962, now seen corresponding path program 11 times [2024-11-28 04:43:36,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:43:36,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565901158] [2024-11-28 04:43:36,340 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:43:36,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:43:36,351 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-11-28 04:43:36,351 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:43:36,890 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 36 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:36,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:43:36,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565901158] [2024-11-28 04:43:36,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565901158] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:43:36,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878989839] [2024-11-28 04:43:36,891 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:43:36,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:36,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:43:36,893 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:43:36,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-28 04:43:36,947 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-11-28 04:43:36,948 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:43:36,948 INFO L256 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-28 04:43:36,950 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:43:37,632 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 36 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:37,632 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:43:38,163 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 36 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:38,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878989839] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:43:38,163 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:43:38,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 45 [2024-11-28 04:43:38,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688620421] [2024-11-28 04:43:38,163 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:43:38,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-28 04:43:38,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:38,164 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-28 04:43:38,164 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=369, Invalid=1611, Unknown=0, NotChecked=0, Total=1980 [2024-11-28 04:43:38,165 INFO L87 Difference]: Start difference. First operand 60 states and 63 transitions. Second operand has 45 states, 45 states have (on average 1.9555555555555555) internal successors, (88), 45 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:38,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:43:38,545 INFO L93 Difference]: Finished difference Result 91 states and 97 transitions. [2024-11-28 04:43:38,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-28 04:43:38,545 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.9555555555555555) internal successors, (88), 45 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-11-28 04:43:38,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:43:38,546 INFO L225 Difference]: With dead ends: 91 [2024-11-28 04:43:38,546 INFO L226 Difference]: Without dead ends: 64 [2024-11-28 04:43:38,547 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 48 SyntacticMatches, 9 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1235 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=395, Invalid=1767, Unknown=0, NotChecked=0, Total=2162 [2024-11-28 04:43:38,547 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 8 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:43:38,547 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 114 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:43:38,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-28 04:43:38,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2024-11-28 04:43:38,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.0806451612903225) internal successors, (67), 62 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:38,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2024-11-28 04:43:38,571 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 41 [2024-11-28 04:43:38,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:43:38,571 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2024-11-28 04:43:38,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.9555555555555555) internal successors, (88), 45 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:38,571 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2024-11-28 04:43:38,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-28 04:43:38,572 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:43:38,572 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:43:38,580 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-28 04:43:38,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:38,772 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:43:38,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:43:38,773 INFO L85 PathProgramCache]: Analyzing trace with hash -895330770, now seen corresponding path program 9 times [2024-11-28 04:43:38,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:43:38,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833912724] [2024-11-28 04:43:38,773 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:43:38,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:43:38,784 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-28 04:43:38,784 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:43:39,423 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 25 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:39,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:43:39,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833912724] [2024-11-28 04:43:39,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833912724] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:43:39,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251602468] [2024-11-28 04:43:39,425 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:43:39,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:39,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:43:39,427 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:43:39,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-28 04:43:39,509 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-28 04:43:39,510 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:43:39,511 INFO L256 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-28 04:43:39,513 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:43:40,125 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 36 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:40,125 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:43:40,619 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 36 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:40,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251602468] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:43:40,619 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:43:40,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 45 [2024-11-28 04:43:40,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144567014] [2024-11-28 04:43:40,619 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:43:40,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-28 04:43:40,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:40,620 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-28 04:43:40,620 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=371, Invalid=1609, Unknown=0, NotChecked=0, Total=1980 [2024-11-28 04:43:40,621 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 45 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:40,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:43:40,886 INFO L93 Difference]: Finished difference Result 77 states and 82 transitions. [2024-11-28 04:43:40,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-28 04:43:40,886 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 45 states have internal predecessors, (91), 0 states have call successors, (0), 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 41 [2024-11-28 04:43:40,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:43:40,887 INFO L225 Difference]: With dead ends: 77 [2024-11-28 04:43:40,887 INFO L226 Difference]: Without dead ends: 70 [2024-11-28 04:43:40,887 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 50 SyntacticMatches, 7 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1222 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=410, Invalid=1752, Unknown=0, NotChecked=0, Total=2162 [2024-11-28 04:43:40,888 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 11 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:43:40,888 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 89 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:43:40,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-28 04:43:40,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 65. [2024-11-28 04:43:40,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.078125) internal successors, (69), 64 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:40,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2024-11-28 04:43:40,895 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 41 [2024-11-28 04:43:40,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:43:40,895 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2024-11-28 04:43:40,895 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 45 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:40,895 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2024-11-28 04:43:40,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-28 04:43:40,895 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:43:40,896 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:43:40,904 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-28 04:43:41,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-28 04:43:41,096 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:43:41,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:43:41,097 INFO L85 PathProgramCache]: Analyzing trace with hash -2001755094, now seen corresponding path program 12 times [2024-11-28 04:43:41,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:43:41,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443358331] [2024-11-28 04:43:41,097 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:43:41,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:43:41,112 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2024-11-28 04:43:41,112 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:43:41,683 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 25 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:41,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:43:41,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443358331] [2024-11-28 04:43:41,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443358331] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:43:41,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535400223] [2024-11-28 04:43:41,685 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:43:41,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:41,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:43:41,687 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:43:41,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-28 04:43:41,751 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2024-11-28 04:43:41,751 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:43:41,752 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-28 04:43:41,754 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:43:42,273 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 36 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:42,273 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:43:42,717 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 49 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:42,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535400223] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:43:42,717 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:43:42,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 44 [2024-11-28 04:43:42,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121918422] [2024-11-28 04:43:42,717 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:43:42,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-28 04:43:42,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:42,718 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-28 04:43:42,719 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=375, Invalid=1517, Unknown=0, NotChecked=0, Total=1892 [2024-11-28 04:43:42,719 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand has 44 states, 44 states have (on average 2.1136363636363638) internal successors, (93), 44 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:43,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:43:43,019 INFO L93 Difference]: Finished difference Result 96 states and 101 transitions. [2024-11-28 04:43:43,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-28 04:43:43,020 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.1136363636363638) internal successors, (93), 44 states have internal predecessors, (93), 0 states have call successors, (0), 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 43 [2024-11-28 04:43:43,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:43:43,021 INFO L225 Difference]: With dead ends: 96 [2024-11-28 04:43:43,021 INFO L226 Difference]: Without dead ends: 89 [2024-11-28 04:43:43,021 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 55 SyntacticMatches, 7 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1207 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=414, Invalid=1656, Unknown=0, NotChecked=0, Total=2070 [2024-11-28 04:43:43,022 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 12 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:43:43,022 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 154 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:43:43,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-28 04:43:43,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 67. [2024-11-28 04:43:43,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.0757575757575757) internal successors, (71), 66 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:43,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2024-11-28 04:43:43,032 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 43 [2024-11-28 04:43:43,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:43:43,033 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2024-11-28 04:43:43,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.1136363636363638) internal successors, (93), 44 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:43,033 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2024-11-28 04:43:43,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-28 04:43:43,033 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:43:43,033 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:43:43,043 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-28 04:43:43,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-28 04:43:43,234 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:43:43,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:43:43,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1907159478, now seen corresponding path program 10 times [2024-11-28 04:43:43,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:43:43,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373766442] [2024-11-28 04:43:43,235 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:43:43,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:43:43,245 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:43:43,245 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:43:43,653 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 49 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:43,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:43:43,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373766442] [2024-11-28 04:43:43,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373766442] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:43:43,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845345389] [2024-11-28 04:43:43,654 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:43:43,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:43,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:43:43,655 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:43:43,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-28 04:43:43,711 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:43:43,711 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:43:43,712 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-28 04:43:43,713 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:43:44,305 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 49 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:44,305 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:43:44,771 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 49 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:44,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1845345389] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:43:44,771 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:43:44,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 41 [2024-11-28 04:43:44,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345834152] [2024-11-28 04:43:44,771 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:43:44,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-28 04:43:44,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:44,772 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-28 04:43:44,773 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=326, Invalid=1314, Unknown=0, NotChecked=0, Total=1640 [2024-11-28 04:43:44,773 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand has 41 states, 41 states have (on average 2.097560975609756) internal successors, (86), 41 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:45,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:43:45,025 INFO L93 Difference]: Finished difference Result 94 states and 98 transitions. [2024-11-28 04:43:45,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-28 04:43:45,026 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.097560975609756) internal successors, (86), 41 states have internal predecessors, (86), 0 states have call successors, (0), 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 43 [2024-11-28 04:43:45,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:43:45,026 INFO L225 Difference]: With dead ends: 94 [2024-11-28 04:43:45,026 INFO L226 Difference]: Without dead ends: 67 [2024-11-28 04:43:45,027 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 55 SyntacticMatches, 9 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 840 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=353, Invalid=1453, Unknown=0, NotChecked=0, Total=1806 [2024-11-28 04:43:45,027 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 12 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:43:45,027 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 88 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:43:45,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-11-28 04:43:45,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 66. [2024-11-28 04:43:45,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.0615384615384615) internal successors, (69), 65 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:45,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 69 transitions. [2024-11-28 04:43:45,034 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 69 transitions. Word has length 43 [2024-11-28 04:43:45,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:43:45,034 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 69 transitions. [2024-11-28 04:43:45,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.097560975609756) internal successors, (86), 41 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:45,034 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 69 transitions. [2024-11-28 04:43:45,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-28 04:43:45,035 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:43:45,035 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:43:45,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-28 04:43:45,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-28 04:43:45,235 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:43:45,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:43:45,236 INFO L85 PathProgramCache]: Analyzing trace with hash 837559494, now seen corresponding path program 13 times [2024-11-28 04:43:45,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:43:45,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048603026] [2024-11-28 04:43:45,236 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:43:45,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:43:45,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:45,782 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 36 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:45,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:43:45,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048603026] [2024-11-28 04:43:45,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048603026] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:43:45,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141843666] [2024-11-28 04:43:45,783 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:43:45,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:45,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:43:45,785 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:43:45,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-28 04:43:45,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:45,845 INFO L256 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-28 04:43:45,846 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:43:46,599 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 49 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:46,599 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:43:47,192 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 49 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:47,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2141843666] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:43:47,192 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:43:47,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 51 [2024-11-28 04:43:47,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598605749] [2024-11-28 04:43:47,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:43:47,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-28 04:43:47,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:47,194 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-28 04:43:47,195 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=458, Invalid=2092, Unknown=0, NotChecked=0, Total=2550 [2024-11-28 04:43:47,195 INFO L87 Difference]: Start difference. First operand 66 states and 69 transitions. Second operand has 51 states, 51 states have (on average 1.9803921568627452) internal successors, (101), 51 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:47,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:43:47,519 INFO L93 Difference]: Finished difference Result 99 states and 105 transitions. [2024-11-28 04:43:47,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-28 04:43:47,520 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.9803921568627452) internal successors, (101), 51 states have internal predecessors, (101), 0 states have call successors, (0), 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 45 [2024-11-28 04:43:47,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:43:47,520 INFO L225 Difference]: With dead ends: 99 [2024-11-28 04:43:47,520 INFO L226 Difference]: Without dead ends: 70 [2024-11-28 04:43:47,521 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 53 SyntacticMatches, 8 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1605 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=485, Invalid=2271, Unknown=0, NotChecked=0, Total=2756 [2024-11-28 04:43:47,521 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 9 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:43:47,522 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 70 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:43:47,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-28 04:43:47,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2024-11-28 04:43:47,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 1.0735294117647058) internal successors, (73), 68 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:47,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2024-11-28 04:43:47,530 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 45 [2024-11-28 04:43:47,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:43:47,530 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2024-11-28 04:43:47,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.9803921568627452) internal successors, (101), 51 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:47,530 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2024-11-28 04:43:47,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-28 04:43:47,531 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:43:47,531 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:43:47,536 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-28 04:43:47,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-28 04:43:47,731 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:43:47,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:43:47,732 INFO L85 PathProgramCache]: Analyzing trace with hash 842340806, now seen corresponding path program 11 times [2024-11-28 04:43:47,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:43:47,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024018603] [2024-11-28 04:43:47,732 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:43:47,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:43:47,740 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-11-28 04:43:47,740 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:43:48,267 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 49 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:48,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:43:48,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024018603] [2024-11-28 04:43:48,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024018603] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:43:48,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519215110] [2024-11-28 04:43:48,267 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:43:48,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:48,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:43:48,270 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:43:48,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-28 04:43:48,328 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-11-28 04:43:48,328 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:43:48,329 INFO L256 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-28 04:43:48,330 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:43:49,105 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 49 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:49,105 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:43:49,730 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 49 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:49,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519215110] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:43:49,730 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:43:49,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 48 [2024-11-28 04:43:49,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912007758] [2024-11-28 04:43:49,730 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:43:49,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-28 04:43:49,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:49,731 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-28 04:43:49,731 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=416, Invalid=1840, Unknown=0, NotChecked=0, Total=2256 [2024-11-28 04:43:49,732 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand has 48 states, 48 states have (on average 2.0208333333333335) internal successors, (97), 48 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:49,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:43:49,917 INFO L93 Difference]: Finished difference Result 83 states and 88 transitions. [2024-11-28 04:43:49,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-28 04:43:49,919 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.0208333333333335) internal successors, (97), 48 states have internal predecessors, (97), 0 states have call successors, (0), 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 45 [2024-11-28 04:43:49,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:43:49,920 INFO L225 Difference]: With dead ends: 83 [2024-11-28 04:43:49,920 INFO L226 Difference]: Without dead ends: 76 [2024-11-28 04:43:49,921 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 54 SyntacticMatches, 10 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1185 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=458, Invalid=1992, Unknown=0, NotChecked=0, Total=2450 [2024-11-28 04:43:49,921 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 12 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:43:49,921 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 67 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:43:49,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-11-28 04:43:49,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 71. [2024-11-28 04:43:49,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.0714285714285714) internal successors, (75), 70 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:49,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2024-11-28 04:43:49,929 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 45 [2024-11-28 04:43:49,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:43:49,929 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2024-11-28 04:43:49,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.0208333333333335) internal successors, (97), 48 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:49,930 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2024-11-28 04:43:49,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-28 04:43:49,930 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:43:49,930 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:43:49,936 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-28 04:43:50,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:50,131 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:43:50,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:43:50,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1702445378, now seen corresponding path program 14 times [2024-11-28 04:43:50,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:43:50,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850657482] [2024-11-28 04:43:50,131 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:43:50,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:43:50,138 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:43:50,138 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:43:50,695 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 36 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:50,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:43:50,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850657482] [2024-11-28 04:43:50,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850657482] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:43:50,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498939248] [2024-11-28 04:43:50,695 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:43:50,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:50,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:43:50,697 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:43:50,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-28 04:43:50,758 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:43:50,758 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:43:50,759 INFO L256 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-28 04:43:50,760 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:43:51,384 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 49 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:51,384 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:43:52,016 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 64 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:52,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498939248] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:43:52,016 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:43:52,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 21] total 49 [2024-11-28 04:43:52,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889090903] [2024-11-28 04:43:52,016 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:43:52,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-28 04:43:52,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:52,017 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-28 04:43:52,017 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=461, Invalid=1891, Unknown=0, NotChecked=0, Total=2352 [2024-11-28 04:43:52,018 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand has 49 states, 49 states have (on average 2.1020408163265305) internal successors, (103), 49 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:52,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:43:52,379 INFO L93 Difference]: Finished difference Result 104 states and 109 transitions. [2024-11-28 04:43:52,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-28 04:43:52,379 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.1020408163265305) internal successors, (103), 49 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2024-11-28 04:43:52,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:43:52,380 INFO L225 Difference]: With dead ends: 104 [2024-11-28 04:43:52,380 INFO L226 Difference]: Without dead ends: 97 [2024-11-28 04:43:52,380 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 59 SyntacticMatches, 8 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1535 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=504, Invalid=2046, Unknown=0, NotChecked=0, Total=2550 [2024-11-28 04:43:52,381 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 11 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:43:52,381 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 170 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:43:52,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-11-28 04:43:52,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 73. [2024-11-28 04:43:52,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.0694444444444444) internal successors, (77), 72 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:52,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2024-11-28 04:43:52,394 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 47 [2024-11-28 04:43:52,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:43:52,395 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2024-11-28 04:43:52,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.1020408163265305) internal successors, (103), 49 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:52,395 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2024-11-28 04:43:52,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-28 04:43:52,397 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:43:52,398 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:43:52,406 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-28 04:43:52,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-11-28 04:43:52,598 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:43:52,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:43:52,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1547914210, now seen corresponding path program 12 times [2024-11-28 04:43:52,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:43:52,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273140633] [2024-11-28 04:43:52,599 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:43:52,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:43:52,610 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-11-28 04:43:52,610 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:43:53,139 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 51 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:53,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:43:53,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273140633] [2024-11-28 04:43:53,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273140633] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:43:53,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680479472] [2024-11-28 04:43:53,140 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:43:53,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:53,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:43:53,141 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:43:53,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-28 04:43:53,204 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-11-28 04:43:53,204 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:43:53,205 INFO L256 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-28 04:43:53,207 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:43:53,879 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 64 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:53,879 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:43:54,430 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 64 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:54,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680479472] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:43:54,430 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:43:54,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 21] total 49 [2024-11-28 04:43:54,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888486755] [2024-11-28 04:43:54,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:43:54,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-28 04:43:54,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:54,431 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-28 04:43:54,432 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=454, Invalid=1898, Unknown=0, NotChecked=0, Total=2352 [2024-11-28 04:43:54,432 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand has 49 states, 49 states have (on average 2.061224489795918) internal successors, (101), 49 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:54,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:43:54,740 INFO L93 Difference]: Finished difference Result 102 states and 106 transitions. [2024-11-28 04:43:54,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-28 04:43:54,741 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.061224489795918) internal successors, (101), 49 states have internal predecessors, (101), 0 states have call successors, (0), 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 47 [2024-11-28 04:43:54,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:43:54,741 INFO L225 Difference]: With dead ends: 102 [2024-11-28 04:43:54,741 INFO L226 Difference]: Without dead ends: 73 [2024-11-28 04:43:54,742 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 60 SyntacticMatches, 7 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1487 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=487, Invalid=2063, Unknown=0, NotChecked=0, Total=2550 [2024-11-28 04:43:54,743 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 10 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:43:54,743 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 129 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:43:54,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-28 04:43:54,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 72. [2024-11-28 04:43:54,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.056338028169014) internal successors, (75), 71 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:54,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 75 transitions. [2024-11-28 04:43:54,757 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 75 transitions. Word has length 47 [2024-11-28 04:43:54,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:43:54,757 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 75 transitions. [2024-11-28 04:43:54,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.061224489795918) internal successors, (101), 49 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:54,758 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 75 transitions. [2024-11-28 04:43:54,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-28 04:43:54,758 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:43:54,759 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:43:54,768 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-28 04:43:54,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-11-28 04:43:54,959 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:43:54,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:43:54,959 INFO L85 PathProgramCache]: Analyzing trace with hash 46324702, now seen corresponding path program 15 times [2024-11-28 04:43:54,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:43:54,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251867713] [2024-11-28 04:43:54,960 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:43:54,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:43:54,969 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-11-28 04:43:54,969 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:43:55,578 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 49 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:55,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:43:55,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251867713] [2024-11-28 04:43:55,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251867713] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:43:55,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355818611] [2024-11-28 04:43:55,579 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:43:55,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:55,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:43:55,580 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:43:55,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-28 04:43:55,645 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-11-28 04:43:55,645 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:43:55,646 INFO L256 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-28 04:43:55,647 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:43:56,458 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 64 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:56,458 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:43:57,106 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 64 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:57,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355818611] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:43:57,106 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:43:57,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 56 [2024-11-28 04:43:57,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437433894] [2024-11-28 04:43:57,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:43:57,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-11-28 04:43:57,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:57,107 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-11-28 04:43:57,108 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=551, Invalid=2529, Unknown=0, NotChecked=0, Total=3080 [2024-11-28 04:43:57,108 INFO L87 Difference]: Start difference. First operand 72 states and 75 transitions. Second operand has 56 states, 56 states have (on average 1.9821428571428572) internal successors, (111), 56 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:57,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:43:57,567 INFO L93 Difference]: Finished difference Result 107 states and 113 transitions. [2024-11-28 04:43:57,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-28 04:43:57,568 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 1.9821428571428572) internal successors, (111), 56 states have internal predecessors, (111), 0 states have call successors, (0), 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 49 [2024-11-28 04:43:57,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:43:57,568 INFO L225 Difference]: With dead ends: 107 [2024-11-28 04:43:57,569 INFO L226 Difference]: Without dead ends: 76 [2024-11-28 04:43:57,569 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 57 SyntacticMatches, 9 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1981 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=579, Invalid=2727, Unknown=0, NotChecked=0, Total=3306 [2024-11-28 04:43:57,570 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 11 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:43:57,570 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 140 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:43:57,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-11-28 04:43:57,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2024-11-28 04:43:57,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.0675675675675675) internal successors, (79), 74 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:57,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2024-11-28 04:43:57,582 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 49 [2024-11-28 04:43:57,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:43:57,583 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2024-11-28 04:43:57,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 1.9821428571428572) internal successors, (111), 56 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:57,583 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2024-11-28 04:43:57,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-28 04:43:57,583 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:43:57,584 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:43:57,593 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-28 04:43:57,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:57,785 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:43:57,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:43:57,785 INFO L85 PathProgramCache]: Analyzing trace with hash -520406690, now seen corresponding path program 13 times [2024-11-28 04:43:57,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:43:57,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238406780] [2024-11-28 04:43:57,785 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:43:57,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:43:57,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:58,463 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 49 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:58,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:43:58,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238406780] [2024-11-28 04:43:58,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238406780] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:43:58,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989358159] [2024-11-28 04:43:58,463 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:43:58,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:58,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:43:58,465 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:43:58,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-28 04:43:58,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:58,527 INFO L256 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-28 04:43:58,528 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:43:59,281 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 64 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:59,281 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:43:59,882 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 64 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:59,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989358159] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:43:59,882 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:43:59,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 55 [2024-11-28 04:43:59,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599659238] [2024-11-28 04:43:59,882 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:43:59,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-11-28 04:43:59,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:59,883 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-11-28 04:43:59,884 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=550, Invalid=2420, Unknown=0, NotChecked=0, Total=2970 [2024-11-28 04:43:59,884 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand has 55 states, 55 states have (on average 2.018181818181818) internal successors, (111), 55 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:44:00,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:44:00,192 INFO L93 Difference]: Finished difference Result 89 states and 94 transitions. [2024-11-28 04:44:00,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-28 04:44:00,193 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.018181818181818) internal successors, (111), 55 states have internal predecessors, (111), 0 states have call successors, (0), 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 49 [2024-11-28 04:44:00,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:44:00,193 INFO L225 Difference]: With dead ends: 89 [2024-11-28 04:44:00,193 INFO L226 Difference]: Without dead ends: 82 [2024-11-28 04:44:00,194 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 58 SyntacticMatches, 9 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1921 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=597, Invalid=2595, Unknown=0, NotChecked=0, Total=3192 [2024-11-28 04:44:00,194 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 11 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:44:00,194 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 112 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:44:00,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-28 04:44:00,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 77. [2024-11-28 04:44:00,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.0657894736842106) internal successors, (81), 76 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:44:00,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2024-11-28 04:44:00,207 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 49 [2024-11-28 04:44:00,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:44:00,207 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2024-11-28 04:44:00,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.018181818181818) internal successors, (111), 55 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:44:00,207 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2024-11-28 04:44:00,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-28 04:44:00,208 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:44:00,208 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:44:00,214 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-11-28 04:44:00,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-28 04:44:00,408 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:44:00,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:44:00,409 INFO L85 PathProgramCache]: Analyzing trace with hash 959797850, now seen corresponding path program 16 times [2024-11-28 04:44:00,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:44:00,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902004790] [2024-11-28 04:44:00,409 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:44:00,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:44:00,418 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:44:00,418 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:44:00,970 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 64 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:44:00,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:44:00,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902004790] [2024-11-28 04:44:00,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902004790] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:44:00,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628587322] [2024-11-28 04:44:00,971 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:44:00,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:44:00,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:44:00,975 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:44:00,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-28 04:44:01,038 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:44:01,038 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:44:01,039 INFO L256 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-28 04:44:01,040 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:44:01,844 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 64 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:44:01,844 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:44:02,472 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 81 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:44:02,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628587322] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:44:02,473 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:44:02,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 51 [2024-11-28 04:44:02,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016343407] [2024-11-28 04:44:02,473 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:44:02,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-28 04:44:02,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:44:02,474 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-28 04:44:02,474 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=497, Invalid=2053, Unknown=0, NotChecked=0, Total=2550 [2024-11-28 04:44:02,475 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand has 51 states, 51 states have (on average 2.0784313725490198) internal successors, (106), 51 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:44:02,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:44:02,728 INFO L93 Difference]: Finished difference Result 112 states and 117 transitions. [2024-11-28 04:44:02,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-28 04:44:02,729 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.0784313725490198) internal successors, (106), 51 states have internal predecessors, (106), 0 states have call successors, (0), 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 51 [2024-11-28 04:44:02,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:44:02,730 INFO L225 Difference]: With dead ends: 112 [2024-11-28 04:44:02,730 INFO L226 Difference]: Without dead ends: 105 [2024-11-28 04:44:02,730 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 63 SyntacticMatches, 11 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1380 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=542, Invalid=2214, Unknown=0, NotChecked=0, Total=2756 [2024-11-28 04:44:02,731 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 18 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:44:02,731 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 114 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:44:02,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-28 04:44:02,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 79. [2024-11-28 04:44:02,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.064102564102564) internal successors, (83), 78 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:44:02,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2024-11-28 04:44:02,740 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 51 [2024-11-28 04:44:02,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:44:02,740 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2024-11-28 04:44:02,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.0784313725490198) internal successors, (106), 51 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:44:02,740 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2024-11-28 04:44:02,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-28 04:44:02,741 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:44:02,741 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:44:02,750 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-11-28 04:44:02,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:44:02,941 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:44:02,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:44:02,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1912595834, now seen corresponding path program 14 times [2024-11-28 04:44:02,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:44:02,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597665942] [2024-11-28 04:44:02,942 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:44:02,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:44:02,949 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:44:02,949 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:44:03,581 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 66 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:44:03,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:44:03,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597665942] [2024-11-28 04:44:03,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597665942] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:44:03,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384891019] [2024-11-28 04:44:03,582 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:44:03,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:44:03,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:44:03,583 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:44:03,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-28 04:44:03,647 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:44:03,647 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:44:03,648 INFO L256 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-28 04:44:03,649 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:44:04,393 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 81 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:44:04,393 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:44:04,961 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 81 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:44:04,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [384891019] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:44:04,962 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:44:04,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23, 23] total 54 [2024-11-28 04:44:04,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277026518] [2024-11-28 04:44:04,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:44:04,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-11-28 04:44:04,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:44:04,963 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-11-28 04:44:04,963 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=548, Invalid=2314, Unknown=0, NotChecked=0, Total=2862 [2024-11-28 04:44:04,963 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand has 54 states, 54 states have (on average 2.0555555555555554) internal successors, (111), 54 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:44:05,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:44:05,280 INFO L93 Difference]: Finished difference Result 110 states and 114 transitions. [2024-11-28 04:44:05,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-28 04:44:05,281 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.0555555555555554) internal successors, (111), 54 states have internal predecessors, (111), 0 states have call successors, (0), 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 51 [2024-11-28 04:44:05,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:44:05,281 INFO L225 Difference]: With dead ends: 110 [2024-11-28 04:44:05,281 INFO L226 Difference]: Without dead ends: 79 [2024-11-28 04:44:05,282 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 63 SyntacticMatches, 9 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1879 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=583, Invalid=2497, Unknown=0, NotChecked=0, Total=3080 [2024-11-28 04:44:05,282 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 9 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:44:05,282 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 101 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:44:05,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-28 04:44:05,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 78. [2024-11-28 04:44:05,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.051948051948052) internal successors, (81), 77 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:44:05,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 81 transitions. [2024-11-28 04:44:05,295 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 81 transitions. Word has length 51 [2024-11-28 04:44:05,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:44:05,295 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 81 transitions. [2024-11-28 04:44:05,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.0555555555555554) internal successors, (111), 54 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:44:05,296 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 81 transitions. [2024-11-28 04:44:05,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-28 04:44:05,296 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:44:05,296 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:44:05,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-11-28 04:44:05,496 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-28 04:44:05,497 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:44:05,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:44:05,497 INFO L85 PathProgramCache]: Analyzing trace with hash -673378570, now seen corresponding path program 17 times [2024-11-28 04:44:05,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:44:05,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928707832] [2024-11-28 04:44:05,497 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:44:05,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:44:05,506 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-11-28 04:44:05,506 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:44:06,269 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 81 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:44:06,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:44:06,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928707832] [2024-11-28 04:44:06,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928707832] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:44:06,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18069490] [2024-11-28 04:44:06,270 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:44:06,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:44:06,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:44:06,271 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:44:06,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-28 04:44:06,342 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-11-28 04:44:06,342 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:44:06,343 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-28 04:44:06,344 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:44:07,272 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 81 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:44:07,272 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:44:08,014 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 81 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:44:08,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18069490] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:44:08,014 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:44:08,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 60 [2024-11-28 04:44:08,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934584098] [2024-11-28 04:44:08,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:44:08,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-11-28 04:44:08,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:44:08,015 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-11-28 04:44:08,016 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=648, Invalid=2892, Unknown=0, NotChecked=0, Total=3540 [2024-11-28 04:44:08,016 INFO L87 Difference]: Start difference. First operand 78 states and 81 transitions. Second operand has 60 states, 60 states have (on average 1.9666666666666666) internal successors, (118), 60 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:44:08,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:44:08,357 INFO L93 Difference]: Finished difference Result 115 states and 121 transitions. [2024-11-28 04:44:08,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-28 04:44:08,358 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 1.9666666666666666) internal successors, (118), 60 states have internal predecessors, (118), 0 states have call successors, (0), 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 53 [2024-11-28 04:44:08,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:44:08,358 INFO L225 Difference]: With dead ends: 115 [2024-11-28 04:44:08,358 INFO L226 Difference]: Without dead ends: 82 [2024-11-28 04:44:08,359 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 61 SyntacticMatches, 11 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2317 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=677, Invalid=3105, Unknown=0, NotChecked=0, Total=3782 [2024-11-28 04:44:08,359 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 9 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:44:08,359 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 87 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:44:08,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-28 04:44:08,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2024-11-28 04:44:08,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.0625) internal successors, (85), 80 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:44:08,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2024-11-28 04:44:08,373 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 53 [2024-11-28 04:44:08,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:44:08,373 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2024-11-28 04:44:08,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 1.9666666666666666) internal successors, (118), 60 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:44:08,373 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2024-11-28 04:44:08,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-28 04:44:08,374 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:44:08,374 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:44:08,380 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2024-11-28 04:44:08,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-28 04:44:08,574 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:44:08,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:44:08,574 INFO L85 PathProgramCache]: Analyzing trace with hash -708004618, now seen corresponding path program 15 times [2024-11-28 04:44:08,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:44:08,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135220639] [2024-11-28 04:44:08,575 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:44:08,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:44:08,585 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-11-28 04:44:08,585 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:44:09,235 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 64 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:44:09,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:44:09,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135220639] [2024-11-28 04:44:09,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135220639] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:44:09,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558109625] [2024-11-28 04:44:09,235 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:44:09,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:44:09,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:44:09,237 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:44:09,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-28 04:44:09,306 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-11-28 04:44:09,306 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:44:09,307 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-28 04:44:09,309 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:44:10,215 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 81 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:44:10,215 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:44:10,904 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 81 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:44:10,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558109625] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:44:10,904 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:44:10,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 60 [2024-11-28 04:44:10,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337782959] [2024-11-28 04:44:10,904 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:44:10,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-11-28 04:44:10,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:44:10,905 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-11-28 04:44:10,906 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=653, Invalid=2887, Unknown=0, NotChecked=0, Total=3540 [2024-11-28 04:44:10,906 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand has 60 states, 60 states have (on average 2.0166666666666666) internal successors, (121), 60 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:44:11,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:44:11,220 INFO L93 Difference]: Finished difference Result 95 states and 100 transitions. [2024-11-28 04:44:11,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-28 04:44:11,221 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 2.0166666666666666) internal successors, (121), 60 states have internal predecessors, (121), 0 states have call successors, (0), 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 53 [2024-11-28 04:44:11,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:44:11,222 INFO L225 Difference]: With dead ends: 95 [2024-11-28 04:44:11,222 INFO L226 Difference]: Without dead ends: 88 [2024-11-28 04:44:11,222 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 62 SyntacticMatches, 10 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2329 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=704, Invalid=3078, Unknown=0, NotChecked=0, Total=3782 [2024-11-28 04:44:11,223 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 11 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:44:11,223 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 107 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:44:11,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-28 04:44:11,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 83. [2024-11-28 04:44:11,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.0609756097560976) internal successors, (87), 82 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:44:11,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2024-11-28 04:44:11,237 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 53 [2024-11-28 04:44:11,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:44:11,238 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2024-11-28 04:44:11,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 2.0166666666666666) internal successors, (121), 60 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:44:11,238 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2024-11-28 04:44:11,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-28 04:44:11,238 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:44:11,238 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:44:11,246 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-11-28 04:44:11,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-28 04:44:11,439 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:44:11,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:44:11,439 INFO L85 PathProgramCache]: Analyzing trace with hash 2075389810, now seen corresponding path program 18 times [2024-11-28 04:44:11,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:44:11,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517451325] [2024-11-28 04:44:11,440 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:44:11,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:44:11,450 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-28 04:44:11,450 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:44:12,118 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 64 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:44:12,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:44:12,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517451325] [2024-11-28 04:44:12,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517451325] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:44:12,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338717208] [2024-11-28 04:44:12,119 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:44:12,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:44:12,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:44:12,121 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:44:12,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-28 04:44:12,197 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-28 04:44:12,197 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:44:12,198 INFO L256 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-28 04:44:12,199 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:44:13,012 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 81 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:44:13,012 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:44:13,717 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 100 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:44:13,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1338717208] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:44:13,717 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:44:13,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 25] total 59 [2024-11-28 04:44:13,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312830773] [2024-11-28 04:44:13,718 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:44:13,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-11-28 04:44:13,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:44:13,719 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-11-28 04:44:13,719 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=660, Invalid=2762, Unknown=0, NotChecked=0, Total=3422 [2024-11-28 04:44:13,719 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand has 59 states, 59 states have (on average 2.0847457627118646) internal successors, (123), 59 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:44:14,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:44:14,127 INFO L93 Difference]: Finished difference Result 120 states and 125 transitions. [2024-11-28 04:44:14,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-28 04:44:14,127 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.0847457627118646) internal successors, (123), 59 states have internal predecessors, (123), 0 states have call successors, (0), 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 [2024-11-28 04:44:14,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:44:14,128 INFO L225 Difference]: With dead ends: 120 [2024-11-28 04:44:14,128 INFO L226 Difference]: Without dead ends: 113 [2024-11-28 04:44:14,128 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 67 SyntacticMatches, 10 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2308 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=711, Invalid=2949, Unknown=0, NotChecked=0, Total=3660 [2024-11-28 04:44:14,129 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 17 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:44:14,129 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 170 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:44:14,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-28 04:44:14,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 85. [2024-11-28 04:44:14,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.0595238095238095) internal successors, (89), 84 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:44:14,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2024-11-28 04:44:14,139 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 55 [2024-11-28 04:44:14,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:44:14,139 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2024-11-28 04:44:14,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 2.0847457627118646) internal successors, (123), 59 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:44:14,140 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2024-11-28 04:44:14,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-28 04:44:14,140 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:44:14,140 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:44:14,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2024-11-28 04:44:14,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-28 04:44:14,341 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:44:14,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:44:14,341 INFO L85 PathProgramCache]: Analyzing trace with hash 2019613458, now seen corresponding path program 16 times [2024-11-28 04:44:14,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:44:14,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849566452] [2024-11-28 04:44:14,341 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:44:14,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:44:14,349 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:44:14,349 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:44:14,916 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 100 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:44:14,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:44:14,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849566452] [2024-11-28 04:44:14,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849566452] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:44:14,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256970133] [2024-11-28 04:44:14,916 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:44:14,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:44:14,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:44:14,918 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:44:14,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-28 04:44:14,987 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:44:14,987 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:44:14,988 INFO L256 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-28 04:44:14,990 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:44:15,822 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 100 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:44:15,822 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:44:16,482 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 100 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:44:16,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256970133] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:44:16,482 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:44:16,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 25] total 58 [2024-11-28 04:44:16,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845723482] [2024-11-28 04:44:16,483 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:44:16,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-11-28 04:44:16,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:44:16,484 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-11-28 04:44:16,484 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=646, Invalid=2660, Unknown=0, NotChecked=0, Total=3306 [2024-11-28 04:44:16,484 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand has 58 states, 58 states have (on average 2.0344827586206895) internal successors, (118), 58 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:44:16,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:44:16,829 INFO L93 Difference]: Finished difference Result 118 states and 122 transitions. [2024-11-28 04:44:16,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-28 04:44:16,829 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 2.0344827586206895) internal successors, (118), 58 states have internal predecessors, (118), 0 states have call successors, (0), 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 [2024-11-28 04:44:16,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:44:16,830 INFO L225 Difference]: With dead ends: 118 [2024-11-28 04:44:16,830 INFO L226 Difference]: Without dead ends: 85 [2024-11-28 04:44:16,830 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 68 SyntacticMatches, 10 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2176 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=683, Invalid=2857, Unknown=0, NotChecked=0, Total=3540 [2024-11-28 04:44:16,831 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 10 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:44:16,831 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 115 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:44:16,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-28 04:44:16,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 84. [2024-11-28 04:44:16,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 1.0481927710843373) internal successors, (87), 83 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:44:16,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 87 transitions. [2024-11-28 04:44:16,841 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 87 transitions. Word has length 55 [2024-11-28 04:44:16,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:44:16,841 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 87 transitions. [2024-11-28 04:44:16,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 2.0344827586206895) internal successors, (118), 58 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:44:16,841 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 87 transitions. [2024-11-28 04:44:16,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-28 04:44:16,841 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:44:16,841 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:44:16,851 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-11-28 04:44:17,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-28 04:44:17,042 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:44:17,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:44:17,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1963638286, now seen corresponding path program 19 times [2024-11-28 04:44:17,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:44:17,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110422287] [2024-11-28 04:44:17,042 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:44:17,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:44:17,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:44:17,698 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 81 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:44:17,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:44:17,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110422287] [2024-11-28 04:44:17,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110422287] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:44:17,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347442938] [2024-11-28 04:44:17,699 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:44:17,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:44:17,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:44:17,700 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:44:17,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-28 04:44:17,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:44:17,769 INFO L256 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-28 04:44:17,770 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:44:18,779 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 100 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:44:18,779 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:44:19,609 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 100 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:44:19,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347442938] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:44:19,609 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:44:19,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 66 [2024-11-28 04:44:19,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672454699] [2024-11-28 04:44:19,609 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:44:19,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2024-11-28 04:44:19,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:44:19,611 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2024-11-28 04:44:19,611 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=764, Invalid=3526, Unknown=0, NotChecked=0, Total=4290 [2024-11-28 04:44:19,611 INFO L87 Difference]: Start difference. First operand 84 states and 87 transitions. Second operand has 66 states, 66 states have (on average 1.9848484848484849) internal successors, (131), 66 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:44:20,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:44:20,059 INFO L93 Difference]: Finished difference Result 123 states and 129 transitions. [2024-11-28 04:44:20,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-28 04:44:20,060 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 1.9848484848484849) internal successors, (131), 66 states have internal predecessors, (131), 0 states have call successors, (0), 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 [2024-11-28 04:44:20,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:44:20,061 INFO L225 Difference]: With dead ends: 123 [2024-11-28 04:44:20,061 INFO L226 Difference]: Without dead ends: 88 [2024-11-28 04:44:20,061 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 65 SyntacticMatches, 11 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2850 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=794, Invalid=3762, Unknown=0, NotChecked=0, Total=4556 [2024-11-28 04:44:20,061 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 13 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:44:20,062 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 113 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:44:20,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-28 04:44:20,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2024-11-28 04:44:20,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.058139534883721) internal successors, (91), 86 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:44:20,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2024-11-28 04:44:20,074 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 57 [2024-11-28 04:44:20,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:44:20,074 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2024-11-28 04:44:20,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 1.9848484848484849) internal successors, (131), 66 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:44:20,074 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2024-11-28 04:44:20,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-28 04:44:20,075 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:44:20,075 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:44:20,082 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-11-28 04:44:20,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:44:20,275 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:44:20,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:44:20,276 INFO L85 PathProgramCache]: Analyzing trace with hash -2113827698, now seen corresponding path program 17 times [2024-11-28 04:44:20,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:44:20,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693348960] [2024-11-28 04:44:20,276 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:44:20,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:44:20,285 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-28 04:44:20,285 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:44:21,006 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 100 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:44:21,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:44:21,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693348960] [2024-11-28 04:44:21,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693348960] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:44:21,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479261565] [2024-11-28 04:44:21,007 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:44:21,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:44:21,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:44:21,009 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:44:21,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-28 04:44:21,083 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-28 04:44:21,083 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:44:21,085 INFO L256 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-28 04:44:21,087 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:44:22,201 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 100 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:44:22,201 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:44:23,028 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 100 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:44:23,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479261565] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:44:23,028 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:44:23,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 63 [2024-11-28 04:44:23,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118621371] [2024-11-28 04:44:23,029 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:44:23,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-11-28 04:44:23,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:44:23,030 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-11-28 04:44:23,030 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=713, Invalid=3193, Unknown=0, NotChecked=0, Total=3906 [2024-11-28 04:44:23,030 INFO L87 Difference]: Start difference. First operand 87 states and 91 transitions. Second operand has 63 states, 63 states have (on average 2.015873015873016) internal successors, (127), 63 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:44:23,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:44:23,388 INFO L93 Difference]: Finished difference Result 101 states and 106 transitions. [2024-11-28 04:44:23,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-28 04:44:23,388 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 2.015873015873016) internal successors, (127), 63 states have internal predecessors, (127), 0 states have call successors, (0), 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 [2024-11-28 04:44:23,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:44:23,389 INFO L225 Difference]: With dead ends: 101 [2024-11-28 04:44:23,389 INFO L226 Difference]: Without dead ends: 94 [2024-11-28 04:44:23,389 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 66 SyntacticMatches, 13 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2175 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=767, Invalid=3393, Unknown=0, NotChecked=0, Total=4160 [2024-11-28 04:44:23,390 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 10 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:44:23,390 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 132 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:44:23,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-28 04:44:23,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 89. [2024-11-28 04:44:23,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.0568181818181819) internal successors, (93), 88 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:44:23,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 93 transitions. [2024-11-28 04:44:23,406 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 93 transitions. Word has length 57 [2024-11-28 04:44:23,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:44:23,406 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 93 transitions. [2024-11-28 04:44:23,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 2.015873015873016) internal successors, (127), 63 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:44:23,406 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 93 transitions. [2024-11-28 04:44:23,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-28 04:44:23,407 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:44:23,407 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:44:23,415 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-11-28 04:44:23,611 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:44:23,611 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:44:23,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:44:23,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1723531126, now seen corresponding path program 20 times [2024-11-28 04:44:23,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:44:23,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051212768] [2024-11-28 04:44:23,612 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:44:23,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:44:23,621 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:44:23,621 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:44:24,346 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 81 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:44:24,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:44:24,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051212768] [2024-11-28 04:44:24,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051212768] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:44:24,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407660274] [2024-11-28 04:44:24,346 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:44:24,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:44:24,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:44:24,348 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:44:24,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-28 04:44:24,419 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:44:24,419 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:44:24,420 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-28 04:44:24,422 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:44:25,304 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 100 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:44:25,305 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:44:26,073 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 121 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:44:26,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407660274] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:44:26,074 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:44:26,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27, 27] total 64 [2024-11-28 04:44:26,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019264504] [2024-11-28 04:44:26,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:44:26,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-11-28 04:44:26,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:44:26,075 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-11-28 04:44:26,075 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=773, Invalid=3259, Unknown=0, NotChecked=0, Total=4032 [2024-11-28 04:44:26,076 INFO L87 Difference]: Start difference. First operand 89 states and 93 transitions. Second operand has 64 states, 64 states have (on average 2.078125) internal successors, (133), 64 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:44:26,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:44:26,458 INFO L93 Difference]: Finished difference Result 128 states and 133 transitions. [2024-11-28 04:44:26,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-28 04:44:26,458 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 2.078125) internal successors, (133), 64 states have internal predecessors, (133), 0 states have call successors, (0), 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 [2024-11-28 04:44:26,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:44:26,459 INFO L225 Difference]: With dead ends: 128 [2024-11-28 04:44:26,459 INFO L226 Difference]: Without dead ends: 121 [2024-11-28 04:44:26,460 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 71 SyntacticMatches, 11 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2753 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=828, Invalid=3462, Unknown=0, NotChecked=0, Total=4290 [2024-11-28 04:44:26,460 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 14 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:44:26,460 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 166 Invalid, 527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:44:26,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2024-11-28 04:44:26,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 91. [2024-11-28 04:44:26,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.0555555555555556) internal successors, (95), 90 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:44:26,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 95 transitions. [2024-11-28 04:44:26,483 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 95 transitions. Word has length 59 [2024-11-28 04:44:26,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:44:26,483 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 95 transitions. [2024-11-28 04:44:26,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 2.078125) internal successors, (133), 64 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:44:26,483 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 95 transitions. [2024-11-28 04:44:26,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-28 04:44:26,484 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:44:26,484 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:44:26,495 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2024-11-28 04:44:26,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:44:26,684 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:44:26,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:44:26,685 INFO L85 PathProgramCache]: Analyzing trace with hash -356635478, now seen corresponding path program 18 times [2024-11-28 04:44:26,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:44:26,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152542315] [2024-11-28 04:44:26,685 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:44:26,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:44:26,694 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2024-11-28 04:44:26,694 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:44:27,383 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 102 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:44:27,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:44:27,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152542315] [2024-11-28 04:44:27,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152542315] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:44:27,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782681948] [2024-11-28 04:44:27,383 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:44:27,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:44:27,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:44:27,387 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:44:27,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-11-28 04:44:27,464 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2024-11-28 04:44:27,464 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:44:27,465 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-28 04:44:27,466 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:44:28,418 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 121 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:44:28,418 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:44:29,206 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 121 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:44:29,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782681948] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:44:29,207 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:44:29,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27, 27] total 64 [2024-11-28 04:44:29,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155556875] [2024-11-28 04:44:29,207 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:44:29,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-11-28 04:44:29,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:44:29,208 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-11-28 04:44:29,208 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=763, Invalid=3269, Unknown=0, NotChecked=0, Total=4032 [2024-11-28 04:44:29,208 INFO L87 Difference]: Start difference. First operand 91 states and 95 transitions. Second operand has 64 states, 64 states have (on average 2.046875) internal successors, (131), 64 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:44:29,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:44:29,664 INFO L93 Difference]: Finished difference Result 126 states and 130 transitions. [2024-11-28 04:44:29,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-28 04:44:29,665 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 2.046875) internal successors, (131), 64 states have internal predecessors, (131), 0 states have call successors, (0), 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 [2024-11-28 04:44:29,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:44:29,665 INFO L225 Difference]: With dead ends: 126 [2024-11-28 04:44:29,666 INFO L226 Difference]: Without dead ends: 91 [2024-11-28 04:44:29,666 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 72 SyntacticMatches, 10 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2690 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=802, Invalid=3488, Unknown=0, NotChecked=0, Total=4290 [2024-11-28 04:44:29,666 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:44:29,666 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 148 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:44:29,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-11-28 04:44:29,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 90. [2024-11-28 04:44:29,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 1.0449438202247192) internal successors, (93), 89 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:44:29,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 93 transitions. [2024-11-28 04:44:29,684 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 93 transitions. Word has length 59 [2024-11-28 04:44:29,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:44:29,684 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 93 transitions. [2024-11-28 04:44:29,684 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 2.046875) internal successors, (131), 64 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:44:29,684 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 93 transitions. [2024-11-28 04:44:29,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-28 04:44:29,684 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:44:29,685 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:44:29,694 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2024-11-28 04:44:29,885 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2024-11-28 04:44:29,885 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:44:29,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:44:29,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1922820390, now seen corresponding path program 21 times [2024-11-28 04:44:29,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:44:29,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353650902] [2024-11-28 04:44:29,886 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:44:29,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:44:29,895 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-11-28 04:44:29,895 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:44:30,634 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 100 proven. 142 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:44:30,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:44:30,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353650902] [2024-11-28 04:44:30,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353650902] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:44:30,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929734808] [2024-11-28 04:44:30,634 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:44:30,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:44:30,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:44:30,636 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:44:30,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-11-28 04:44:30,714 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-11-28 04:44:30,714 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:44:30,715 INFO L256 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-28 04:44:30,717 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:44:31,840 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 121 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:44:31,840 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:44:32,774 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 121 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:44:32,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1929734808] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:44:32,774 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:44:32,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 71 [2024-11-28 04:44:32,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456956733] [2024-11-28 04:44:32,775 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:44:32,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2024-11-28 04:44:32,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:44:32,775 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2024-11-28 04:44:32,776 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=884, Invalid=4086, Unknown=0, NotChecked=0, Total=4970 [2024-11-28 04:44:32,776 INFO L87 Difference]: Start difference. First operand 90 states and 93 transitions. Second operand has 71 states, 71 states have (on average 1.9859154929577465) internal successors, (141), 71 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:44:33,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:44:33,198 INFO L93 Difference]: Finished difference Result 131 states and 137 transitions. [2024-11-28 04:44:33,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-28 04:44:33,199 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 1.9859154929577465) internal successors, (141), 71 states have internal predecessors, (141), 0 states have call successors, (0), 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 [2024-11-28 04:44:33,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:44:33,200 INFO L225 Difference]: With dead ends: 131 [2024-11-28 04:44:33,200 INFO L226 Difference]: Without dead ends: 94 [2024-11-28 04:44:33,200 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 69 SyntacticMatches, 12 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3343 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=915, Invalid=4341, Unknown=0, NotChecked=0, Total=5256 [2024-11-28 04:44:33,201 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 8 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:44:33,201 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 103 Invalid, 470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:44:33,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-28 04:44:33,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2024-11-28 04:44:33,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.0543478260869565) internal successors, (97), 92 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:44:33,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 97 transitions. [2024-11-28 04:44:33,219 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 97 transitions. Word has length 61 [2024-11-28 04:44:33,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:44:33,220 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 97 transitions. [2024-11-28 04:44:33,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 1.9859154929577465) internal successors, (141), 71 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:44:33,220 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 97 transitions. [2024-11-28 04:44:33,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-28 04:44:33,220 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:44:33,221 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:44:33,235 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2024-11-28 04:44:33,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2024-11-28 04:44:33,422 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:44:33,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:44:33,422 INFO L85 PathProgramCache]: Analyzing trace with hash -378421210, now seen corresponding path program 19 times [2024-11-28 04:44:33,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:44:33,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799815980] [2024-11-28 04:44:33,423 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:44:33,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:44:33,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:44:34,219 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 100 proven. 142 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:44:34,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:44:34,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799815980] [2024-11-28 04:44:34,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799815980] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:44:34,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959319819] [2024-11-28 04:44:34,219 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:44:34,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:44:34,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:44:34,221 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:44:34,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-11-28 04:44:34,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:44:34,293 INFO L256 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-28 04:44:34,295 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:44:35,358 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 121 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:44:35,359 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:44:36,269 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 121 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:44:36,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [959319819] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:44:36,270 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:44:36,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 70 [2024-11-28 04:44:36,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45759029] [2024-11-28 04:44:36,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:44:36,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2024-11-28 04:44:36,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:44:36,271 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2024-11-28 04:44:36,271 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=886, Invalid=3944, Unknown=0, NotChecked=0, Total=4830 [2024-11-28 04:44:36,271 INFO L87 Difference]: Start difference. First operand 93 states and 97 transitions. Second operand has 70 states, 70 states have (on average 2.0142857142857142) internal successors, (141), 70 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:44:36,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:44:36,673 INFO L93 Difference]: Finished difference Result 107 states and 112 transitions. [2024-11-28 04:44:36,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-28 04:44:36,674 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 2.0142857142857142) internal successors, (141), 70 states have internal predecessors, (141), 0 states have call successors, (0), 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 [2024-11-28 04:44:36,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:44:36,674 INFO L225 Difference]: With dead ends: 107 [2024-11-28 04:44:36,674 INFO L226 Difference]: Without dead ends: 100 [2024-11-28 04:44:36,675 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 70 SyntacticMatches, 12 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3262 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=945, Invalid=4167, Unknown=0, NotChecked=0, Total=5112 [2024-11-28 04:44:36,675 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 10 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:44:36,675 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 108 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:44:36,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-11-28 04:44:36,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 95. [2024-11-28 04:44:36,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.053191489361702) internal successors, (99), 94 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:44:36,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 99 transitions. [2024-11-28 04:44:36,695 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 99 transitions. Word has length 61 [2024-11-28 04:44:36,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:44:36,695 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 99 transitions. [2024-11-28 04:44:36,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 2.0142857142857142) internal successors, (141), 70 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:44:36,695 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 99 transitions. [2024-11-28 04:44:36,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-28 04:44:36,696 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:44:36,696 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:44:36,703 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2024-11-28 04:44:36,896 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2024-11-28 04:44:36,896 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:44:36,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:44:36,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1833398878, now seen corresponding path program 22 times [2024-11-28 04:44:36,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:44:36,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432711839] [2024-11-28 04:44:36,897 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:44:36,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:44:36,903 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:44:36,903 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:44:37,706 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 121 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:44:37,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:44:37,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432711839] [2024-11-28 04:44:37,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432711839] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:44:37,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589673523] [2024-11-28 04:44:37,707 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:44:37,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:44:37,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:44:37,708 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:44:37,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-11-28 04:44:37,786 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:44:37,786 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:44:37,787 INFO L256 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-28 04:44:37,790 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:44:38,858 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 121 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:44:38,858 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:44:39,742 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 144 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:44:39,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [589673523] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:44:39,743 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:44:39,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 29, 29] total 68 [2024-11-28 04:44:39,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025216307] [2024-11-28 04:44:39,743 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:44:39,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-11-28 04:44:39,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:44:39,744 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-11-28 04:44:39,745 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=879, Invalid=3677, Unknown=0, NotChecked=0, Total=4556 [2024-11-28 04:44:39,745 INFO L87 Difference]: Start difference. First operand 95 states and 99 transitions. Second operand has 68 states, 68 states have (on average 2.0588235294117645) internal successors, (140), 68 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:44:40,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:44:40,195 INFO L93 Difference]: Finished difference Result 136 states and 141 transitions. [2024-11-28 04:44:40,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-28 04:44:40,196 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 2.0588235294117645) internal successors, (140), 68 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-11-28 04:44:40,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:44:40,197 INFO L225 Difference]: With dead ends: 136 [2024-11-28 04:44:40,197 INFO L226 Difference]: Without dead ends: 129 [2024-11-28 04:44:40,197 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 75 SyntacticMatches, 13 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3132 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=938, Invalid=3892, Unknown=0, NotChecked=0, Total=4830 [2024-11-28 04:44:40,197 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 18 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:44:40,198 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 186 Invalid, 607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:44:40,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-11-28 04:44:40,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 97. [2024-11-28 04:44:40,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.0520833333333333) internal successors, (101), 96 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:44:40,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 101 transitions. [2024-11-28 04:44:40,213 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 101 transitions. Word has length 63 [2024-11-28 04:44:40,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:44:40,213 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 101 transitions. [2024-11-28 04:44:40,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 2.0588235294117645) internal successors, (140), 68 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:44:40,214 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 101 transitions. [2024-11-28 04:44:40,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-28 04:44:40,214 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:44:40,214 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:44:40,223 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2024-11-28 04:44:40,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:44:40,418 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:44:40,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:44:40,419 INFO L85 PathProgramCache]: Analyzing trace with hash 921688642, now seen corresponding path program 20 times [2024-11-28 04:44:40,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:44:40,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723870840] [2024-11-28 04:44:40,419 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:44:40,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:44:40,428 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:44:40,429 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:44:41,253 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 123 proven. 142 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:44:41,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:44:41,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723870840] [2024-11-28 04:44:41,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723870840] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:44:41,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262891014] [2024-11-28 04:44:41,253 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:44:41,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:44:41,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:44:41,255 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:44:41,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-11-28 04:44:41,331 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:44:41,331 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:44:41,332 INFO L256 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-28 04:44:41,334 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:44:42,503 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 144 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:44:42,503 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:44:43,430 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 144 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:44:43,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262891014] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:44:43,431 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:44:43,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 29, 29] total 69 [2024-11-28 04:44:43,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658258305] [2024-11-28 04:44:43,431 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:44:43,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-11-28 04:44:43,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:44:43,432 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-11-28 04:44:43,432 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=884, Invalid=3808, Unknown=0, NotChecked=0, Total=4692 [2024-11-28 04:44:43,432 INFO L87 Difference]: Start difference. First operand 97 states and 101 transitions. Second operand has 69 states, 69 states have (on average 2.0434782608695654) internal successors, (141), 69 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:44:43,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:44:43,956 INFO L93 Difference]: Finished difference Result 134 states and 138 transitions. [2024-11-28 04:44:43,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-28 04:44:43,956 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 2.0434782608695654) internal successors, (141), 69 states have internal predecessors, (141), 0 states have call successors, (0), 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 63 [2024-11-28 04:44:43,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:44:43,957 INFO L225 Difference]: With dead ends: 134 [2024-11-28 04:44:43,957 INFO L226 Difference]: Without dead ends: 97 [2024-11-28 04:44:43,957 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 75 SyntacticMatches, 12 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3208 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=925, Invalid=4045, Unknown=0, NotChecked=0, Total=4970 [2024-11-28 04:44:43,958 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 8 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:44:43,958 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 147 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 632 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:44:43,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-11-28 04:44:43,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 96. [2024-11-28 04:44:43,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.0421052631578946) internal successors, (99), 95 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:44:43,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 99 transitions. [2024-11-28 04:44:43,971 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 99 transitions. Word has length 63 [2024-11-28 04:44:43,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:44:43,971 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 99 transitions. [2024-11-28 04:44:43,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 2.0434782608695654) internal successors, (141), 69 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:44:43,971 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 99 transitions. [2024-11-28 04:44:43,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-28 04:44:43,972 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:44:43,972 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:44:43,979 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2024-11-28 04:44:44,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2024-11-28 04:44:44,172 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:44:44,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:44:44,173 INFO L85 PathProgramCache]: Analyzing trace with hash -580874178, now seen corresponding path program 23 times [2024-11-28 04:44:44,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:44:44,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615412016] [2024-11-28 04:44:44,173 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:44:44,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:44:44,181 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-11-28 04:44:44,181 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:44:45,145 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 144 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:44:45,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:44:45,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615412016] [2024-11-28 04:44:45,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615412016] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:44:45,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726852385] [2024-11-28 04:44:45,146 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:44:45,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:44:45,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:44:45,147 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:44:45,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-11-28 04:44:45,229 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-11-28 04:44:45,229 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:44:45,230 INFO L256 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-28 04:44:45,231 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:44:46,682 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 144 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:44:46,682 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:44:47,897 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 144 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:44:47,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726852385] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:44:47,897 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:44:47,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 74 [2024-11-28 04:44:47,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967961981] [2024-11-28 04:44:47,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:44:47,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2024-11-28 04:44:47,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:44:47,898 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2024-11-28 04:44:47,899 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=965, Invalid=4437, Unknown=0, NotChecked=0, Total=5402 [2024-11-28 04:44:47,899 INFO L87 Difference]: Start difference. First operand 96 states and 99 transitions. Second operand has 74 states, 74 states have (on average 1.9864864864864864) internal successors, (147), 74 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:44:48,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:44:48,306 INFO L93 Difference]: Finished difference Result 139 states and 145 transitions. [2024-11-28 04:44:48,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-28 04:44:48,306 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 1.9864864864864864) internal successors, (147), 74 states have internal predecessors, (147), 0 states have call successors, (0), 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 65 [2024-11-28 04:44:48,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:44:48,307 INFO L225 Difference]: With dead ends: 139 [2024-11-28 04:44:48,307 INFO L226 Difference]: Without dead ends: 100 [2024-11-28 04:44:48,307 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 72 SyntacticMatches, 16 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3094 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=985, Invalid=4565, Unknown=0, NotChecked=0, Total=5550 [2024-11-28 04:44:48,308 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 10 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:44:48,308 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 119 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:44:48,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-11-28 04:44:48,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 99. [2024-11-28 04:44:48,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 1.0510204081632653) internal successors, (103), 98 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:44:48,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 103 transitions. [2024-11-28 04:44:48,319 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 103 transitions. Word has length 65 [2024-11-28 04:44:48,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:44:48,320 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 103 transitions. [2024-11-28 04:44:48,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 1.9864864864864864) internal successors, (147), 74 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:44:48,320 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 103 transitions. [2024-11-28 04:44:48,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-28 04:44:48,320 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:44:48,320 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:44:48,330 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2024-11-28 04:44:48,520 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-11-28 04:44:48,521 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:44:48,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:44:48,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1032499266, now seen corresponding path program 21 times [2024-11-28 04:44:48,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:44:48,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150654529] [2024-11-28 04:44:48,521 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:44:48,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:44:48,530 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2024-11-28 04:44:48,530 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:44:49,503 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 121 proven. 167 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:44:49,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:44:49,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150654529] [2024-11-28 04:44:49,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150654529] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:44:49,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382725820] [2024-11-28 04:44:49,503 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:44:49,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:44:49,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:44:49,505 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:44:49,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-11-28 04:44:49,590 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2024-11-28 04:44:49,590 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:44:49,591 INFO L256 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-28 04:44:49,593 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:44:50,757 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 144 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:44:50,757 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:44:51,753 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 144 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:44:51,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382725820] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:44:51,754 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:44:51,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 75 [2024-11-28 04:44:51,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734949606] [2024-11-28 04:44:51,754 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:44:51,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2024-11-28 04:44:51,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:44:51,755 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2024-11-28 04:44:51,755 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1016, Invalid=4534, Unknown=0, NotChecked=0, Total=5550 [2024-11-28 04:44:51,755 INFO L87 Difference]: Start difference. First operand 99 states and 103 transitions. Second operand has 75 states, 75 states have (on average 2.013333333333333) internal successors, (151), 75 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:44:52,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:44:52,283 INFO L93 Difference]: Finished difference Result 113 states and 118 transitions. [2024-11-28 04:44:52,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-28 04:44:52,284 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 2.013333333333333) internal successors, (151), 75 states have internal predecessors, (151), 0 states have call successors, (0), 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 65 [2024-11-28 04:44:52,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:44:52,285 INFO L225 Difference]: With dead ends: 113 [2024-11-28 04:44:52,285 INFO L226 Difference]: Without dead ends: 106 [2024-11-28 04:44:52,285 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 74 SyntacticMatches, 13 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3787 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1079, Invalid=4773, Unknown=0, NotChecked=0, Total=5852 [2024-11-28 04:44:52,285 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 11 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 816 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 816 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:44:52,285 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 171 Invalid, 821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 816 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:44:52,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-11-28 04:44:52,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 101. [2024-11-28 04:44:52,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.05) internal successors, (105), 100 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:44:52,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 105 transitions. [2024-11-28 04:44:52,301 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 105 transitions. Word has length 65 [2024-11-28 04:44:52,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:44:52,301 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 105 transitions. [2024-11-28 04:44:52,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 2.013333333333333) internal successors, (151), 75 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:44:52,301 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 105 transitions. [2024-11-28 04:44:52,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-28 04:44:52,302 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:44:52,302 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:44:52,312 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2024-11-28 04:44:52,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-11-28 04:44:52,502 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:44:52,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:44:52,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1654745414, now seen corresponding path program 24 times [2024-11-28 04:44:52,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:44:52,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514306934] [2024-11-28 04:44:52,503 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:44:52,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:44:52,513 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2024-11-28 04:44:52,513 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:44:53,510 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 121 proven. 192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:44:53,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:44:53,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514306934] [2024-11-28 04:44:53,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514306934] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:44:53,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259860917] [2024-11-28 04:44:53,511 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:44:53,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:44:53,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:44:53,513 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:44:53,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2024-11-28 04:44:53,604 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2024-11-28 04:44:53,604 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:44:53,605 INFO L256 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-28 04:44:53,606 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:44:54,714 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 144 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:44:54,714 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:44:55,816 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 169 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:44:55,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259860917] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:44:55,817 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:44:55,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 31, 31] total 74 [2024-11-28 04:44:55,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678292547] [2024-11-28 04:44:55,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:44:55,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2024-11-28 04:44:55,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:44:55,818 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2024-11-28 04:44:55,818 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1026, Invalid=4376, Unknown=0, NotChecked=0, Total=5402 [2024-11-28 04:44:55,819 INFO L87 Difference]: Start difference. First operand 101 states and 105 transitions. Second operand has 74 states, 74 states have (on average 2.0675675675675675) internal successors, (153), 74 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:44:56,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:44:56,232 INFO L93 Difference]: Finished difference Result 144 states and 149 transitions. [2024-11-28 04:44:56,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-28 04:44:56,232 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 2.0675675675675675) internal successors, (153), 74 states have internal predecessors, (153), 0 states have call successors, (0), 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 67 [2024-11-28 04:44:56,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:44:56,233 INFO L225 Difference]: With dead ends: 144 [2024-11-28 04:44:56,234 INFO L226 Difference]: Without dead ends: 137 [2024-11-28 04:44:56,234 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 79 SyntacticMatches, 13 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3760 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1089, Invalid=4611, Unknown=0, NotChecked=0, Total=5700 [2024-11-28 04:44:56,234 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 17 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:44:56,235 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 95 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:44:56,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2024-11-28 04:44:56,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 103. [2024-11-28 04:44:56,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 1.0490196078431373) internal successors, (107), 102 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:44:56,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 107 transitions. [2024-11-28 04:44:56,263 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 107 transitions. Word has length 67 [2024-11-28 04:44:56,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:44:56,264 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 107 transitions. [2024-11-28 04:44:56,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 2.0675675675675675) internal successors, (153), 74 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:44:56,264 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 107 transitions. [2024-11-28 04:44:56,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-28 04:44:56,265 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:44:56,265 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:44:56,277 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2024-11-28 04:44:56,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:44:56,465 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:44:56,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:44:56,466 INFO L85 PathProgramCache]: Analyzing trace with hash -582097958, now seen corresponding path program 22 times [2024-11-28 04:44:56,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:44:56,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246993820] [2024-11-28 04:44:56,466 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:44:56,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:44:56,478 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:44:56,478 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:44:57,461 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 169 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:44:57,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:44:57,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246993820] [2024-11-28 04:44:57,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246993820] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:44:57,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945087375] [2024-11-28 04:44:57,462 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:44:57,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:44:57,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:44:57,463 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:44:57,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2024-11-28 04:44:57,544 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:44:57,544 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:44:57,545 INFO L256 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-28 04:44:57,547 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:44:58,790 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 169 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:44:58,790 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:44:59,927 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 169 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:44:59,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945087375] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:44:59,927 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:44:59,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 71 [2024-11-28 04:44:59,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502560084] [2024-11-28 04:44:59,927 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:44:59,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2024-11-28 04:44:59,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:44:59,928 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2024-11-28 04:44:59,929 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=947, Invalid=4023, Unknown=0, NotChecked=0, Total=4970 [2024-11-28 04:44:59,929 INFO L87 Difference]: Start difference. First operand 103 states and 107 transitions. Second operand has 71 states, 71 states have (on average 2.056338028169014) internal successors, (146), 71 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:45:00,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:45:00,359 INFO L93 Difference]: Finished difference Result 142 states and 146 transitions. [2024-11-28 04:45:00,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-28 04:45:00,359 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 2.056338028169014) internal successors, (146), 71 states have internal predecessors, (146), 0 states have call successors, (0), 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 67 [2024-11-28 04:45:00,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:45:00,360 INFO L225 Difference]: With dead ends: 142 [2024-11-28 04:45:00,360 INFO L226 Difference]: Without dead ends: 103 [2024-11-28 04:45:00,360 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 79 SyntacticMatches, 15 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2853 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=986, Invalid=4270, Unknown=0, NotChecked=0, Total=5256 [2024-11-28 04:45:00,361 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 13 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:45:00,361 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 128 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:45:00,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-11-28 04:45:00,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 102. [2024-11-28 04:45:00,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.0396039603960396) internal successors, (105), 101 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:45:00,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 105 transitions. [2024-11-28 04:45:00,381 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 105 transitions. Word has length 67 [2024-11-28 04:45:00,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:45:00,382 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 105 transitions. [2024-11-28 04:45:00,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 2.056338028169014) internal successors, (146), 71 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:45:00,382 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 105 transitions. [2024-11-28 04:45:00,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-28 04:45:00,382 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:45:00,382 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:45:00,390 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2024-11-28 04:45:00,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2024-11-28 04:45:00,583 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:45:00,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:45:00,583 INFO L85 PathProgramCache]: Analyzing trace with hash -693587114, now seen corresponding path program 25 times [2024-11-28 04:45:00,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:45:00,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354528395] [2024-11-28 04:45:00,583 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:45:00,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:45:00,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:01,509 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 144 proven. 194 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:45:01,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:45:01,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354528395] [2024-11-28 04:45:01,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354528395] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:45:01,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890951661] [2024-11-28 04:45:01,510 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:45:01,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:45:01,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:45:01,512 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:45:01,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2024-11-28 04:45:01,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:01,597 INFO L256 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-28 04:45:01,599 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:45:03,005 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 169 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:45:03,005 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:45:04,165 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 169 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:45:04,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890951661] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:45:04,165 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:45:04,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 81 [2024-11-28 04:45:04,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528524510] [2024-11-28 04:45:04,165 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:45:04,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2024-11-28 04:45:04,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:45:04,166 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2024-11-28 04:45:04,166 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1151, Invalid=5329, Unknown=0, NotChecked=0, Total=6480 [2024-11-28 04:45:04,166 INFO L87 Difference]: Start difference. First operand 102 states and 105 transitions. Second operand has 81 states, 81 states have (on average 1.9876543209876543) internal successors, (161), 81 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:45:04,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:45:04,697 INFO L93 Difference]: Finished difference Result 147 states and 153 transitions. [2024-11-28 04:45:04,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-28 04:45:04,697 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 1.9876543209876543) internal successors, (161), 81 states have internal predecessors, (161), 0 states have call successors, (0), 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 69 [2024-11-28 04:45:04,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:45:04,698 INFO L225 Difference]: With dead ends: 147 [2024-11-28 04:45:04,698 INFO L226 Difference]: Without dead ends: 106 [2024-11-28 04:45:04,698 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 76 SyntacticMatches, 15 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4490 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1184, Invalid=5622, Unknown=0, NotChecked=0, Total=6806 [2024-11-28 04:45:04,699 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 16 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 595 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:45:04,699 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 132 Invalid, 602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 595 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:45:04,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-11-28 04:45:04,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2024-11-28 04:45:04,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 1.0480769230769231) internal successors, (109), 104 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:45:04,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 109 transitions. [2024-11-28 04:45:04,722 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 109 transitions. Word has length 69 [2024-11-28 04:45:04,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:45:04,723 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 109 transitions. [2024-11-28 04:45:04,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 1.9876543209876543) internal successors, (161), 81 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:45:04,723 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 109 transitions. [2024-11-28 04:45:04,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-28 04:45:04,723 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:45:04,724 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:45:04,733 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2024-11-28 04:45:04,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2024-11-28 04:45:04,924 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:45:04,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:45:04,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1780204714, now seen corresponding path program 23 times [2024-11-28 04:45:04,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:45:04,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001634180] [2024-11-28 04:45:04,925 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:45:04,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:45:04,933 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2024-11-28 04:45:04,933 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:45:05,933 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 169 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:45:05,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:45:05,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001634180] [2024-11-28 04:45:05,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001634180] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:45:05,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662784954] [2024-11-28 04:45:05,934 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:45:05,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:45:05,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:45:05,936 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:45:05,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2024-11-28 04:45:06,020 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2024-11-28 04:45:06,020 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:45:06,021 INFO L256 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-28 04:45:06,023 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:45:07,622 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 169 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:45:07,622 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:45:08,842 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 169 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:45:08,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662784954] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:45:08,842 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:45:08,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 78 [2024-11-28 04:45:08,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073540626] [2024-11-28 04:45:08,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:45:08,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2024-11-28 04:45:08,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:45:08,844 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2024-11-28 04:45:08,844 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1091, Invalid=4915, Unknown=0, NotChecked=0, Total=6006 [2024-11-28 04:45:08,844 INFO L87 Difference]: Start difference. First operand 105 states and 109 transitions. Second operand has 78 states, 78 states have (on average 2.0128205128205128) internal successors, (157), 78 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:45:09,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:45:09,261 INFO L93 Difference]: Finished difference Result 119 states and 124 transitions. [2024-11-28 04:45:09,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-28 04:45:09,261 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 2.0128205128205128) internal successors, (157), 78 states have internal predecessors, (157), 0 states have call successors, (0), 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 69 [2024-11-28 04:45:09,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:45:09,262 INFO L225 Difference]: With dead ends: 119 [2024-11-28 04:45:09,262 INFO L226 Difference]: Without dead ends: 112 [2024-11-28 04:45:09,263 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 78 SyntacticMatches, 16 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3462 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1157, Invalid=5163, Unknown=0, NotChecked=0, Total=6320 [2024-11-28 04:45:09,263 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 13 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:45:09,263 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 94 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:45:09,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-11-28 04:45:09,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 107. [2024-11-28 04:45:09,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 1.0471698113207548) internal successors, (111), 106 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:45:09,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 111 transitions. [2024-11-28 04:45:09,287 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 111 transitions. Word has length 69 [2024-11-28 04:45:09,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:45:09,287 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 111 transitions. [2024-11-28 04:45:09,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 2.0128205128205128) internal successors, (157), 78 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:45:09,288 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 111 transitions. [2024-11-28 04:45:09,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-28 04:45:09,288 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:45:09,288 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:45:09,298 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2024-11-28 04:45:09,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2024-11-28 04:45:09,489 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:45:09,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:45:09,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1022944302, now seen corresponding path program 26 times [2024-11-28 04:45:09,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:45:09,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635909003] [2024-11-28 04:45:09,489 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:45:09,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:45:09,497 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:45:09,497 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:45:10,330 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 144 proven. 221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:45:10,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:45:10,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635909003] [2024-11-28 04:45:10,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635909003] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:45:10,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740535887] [2024-11-28 04:45:10,330 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:45:10,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:45:10,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:45:10,332 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:45:10,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2024-11-28 04:45:10,415 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:45:10,415 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:45:10,416 INFO L256 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-28 04:45:10,418 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:45:11,951 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 169 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:45:11,951 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:45:13,100 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 196 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:45:13,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740535887] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:45:13,100 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:45:13,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 77 [2024-11-28 04:45:13,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571155810] [2024-11-28 04:45:13,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:45:13,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2024-11-28 04:45:13,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:45:13,102 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2024-11-28 04:45:13,102 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1089, Invalid=4763, Unknown=0, NotChecked=0, Total=5852 [2024-11-28 04:45:13,102 INFO L87 Difference]: Start difference. First operand 107 states and 111 transitions. Second operand has 77 states, 77 states have (on average 2.064935064935065) internal successors, (159), 77 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) [2024-11-28 04:45:13,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:45:13,651 INFO L93 Difference]: Finished difference Result 152 states and 157 transitions. [2024-11-28 04:45:13,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-28 04:45:13,651 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 2.064935064935065) internal successors, (159), 77 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 71 [2024-11-28 04:45:13,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:45:13,652 INFO L225 Difference]: With dead ends: 152 [2024-11-28 04:45:13,652 INFO L226 Difference]: Without dead ends: 145 [2024-11-28 04:45:13,652 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 83 SyntacticMatches, 15 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3484 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1154, Invalid=5008, Unknown=0, NotChecked=0, Total=6162 [2024-11-28 04:45:13,653 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 21 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:45:13,653 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 196 Invalid, 768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 763 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:45:13,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-11-28 04:45:13,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 109. [2024-11-28 04:45:13,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.0462962962962963) internal successors, (113), 108 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:45:13,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 113 transitions. [2024-11-28 04:45:13,679 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 113 transitions. Word has length 71 [2024-11-28 04:45:13,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:45:13,679 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 113 transitions. [2024-11-28 04:45:13,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 2.064935064935065) internal successors, (159), 77 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) [2024-11-28 04:45:13,679 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 113 transitions. [2024-11-28 04:45:13,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-28 04:45:13,680 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:45:13,680 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:45:13,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2024-11-28 04:45:13,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2024-11-28 04:45:13,880 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:45:13,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:45:13,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1867495054, now seen corresponding path program 24 times [2024-11-28 04:45:13,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:45:13,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682525107] [2024-11-28 04:45:13,881 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:45:13,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:45:13,892 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2024-11-28 04:45:13,893 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:45:14,728 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 171 proven. 194 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:45:14,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:45:14,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682525107] [2024-11-28 04:45:14,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682525107] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:45:14,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625758176] [2024-11-28 04:45:14,729 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:45:14,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:45:14,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:45:14,731 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:45:14,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2024-11-28 04:45:14,828 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2024-11-28 04:45:14,828 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:45:14,829 INFO L256 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-28 04:45:14,831 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:45:16,160 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 196 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:45:16,161 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:45:17,220 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 196 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:45:17,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625758176] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:45:17,221 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:45:17,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 33, 33] total 79 [2024-11-28 04:45:17,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286586404] [2024-11-28 04:45:17,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:45:17,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2024-11-28 04:45:17,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:45:17,222 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2024-11-28 04:45:17,222 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1153, Invalid=5009, Unknown=0, NotChecked=0, Total=6162 [2024-11-28 04:45:17,223 INFO L87 Difference]: Start difference. First operand 109 states and 113 transitions. Second operand has 79 states, 79 states have (on average 2.037974683544304) internal successors, (161), 79 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:45:17,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:45:17,721 INFO L93 Difference]: Finished difference Result 150 states and 154 transitions. [2024-11-28 04:45:17,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-28 04:45:17,721 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 2.037974683544304) internal successors, (161), 79 states have internal predecessors, (161), 0 states have call successors, (0), 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 71 [2024-11-28 04:45:17,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:45:17,722 INFO L225 Difference]: With dead ends: 150 [2024-11-28 04:45:17,722 INFO L226 Difference]: Without dead ends: 109 [2024-11-28 04:45:17,723 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 84 SyntacticMatches, 13 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4244 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1198, Invalid=5282, Unknown=0, NotChecked=0, Total=6480 [2024-11-28 04:45:17,723 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 15 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:45:17,723 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 138 Invalid, 617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:45:17,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-11-28 04:45:17,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 108. [2024-11-28 04:45:17,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 1.0373831775700935) internal successors, (111), 107 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:45:17,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 111 transitions. [2024-11-28 04:45:17,747 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 111 transitions. Word has length 71 [2024-11-28 04:45:17,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:45:17,747 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 111 transitions. [2024-11-28 04:45:17,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 2.037974683544304) internal successors, (161), 79 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:45:17,747 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 111 transitions. [2024-11-28 04:45:17,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-28 04:45:17,748 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:45:17,748 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:45:17,755 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2024-11-28 04:45:17,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:45:17,948 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:45:17,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:45:17,948 INFO L85 PathProgramCache]: Analyzing trace with hash 876892782, now seen corresponding path program 27 times [2024-11-28 04:45:17,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:45:17,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774042908] [2024-11-28 04:45:17,949 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:45:17,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:45:17,957 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2024-11-28 04:45:17,957 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:45:18,954 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 169 proven. 223 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:45:18,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:45:18,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774042908] [2024-11-28 04:45:18,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774042908] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:45:18,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935771510] [2024-11-28 04:45:18,954 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:45:18,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:45:18,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:45:18,956 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:45:18,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2024-11-28 04:45:19,054 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2024-11-28 04:45:19,054 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:45:19,055 INFO L256 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-28 04:45:19,057 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:45:20,752 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 196 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:45:20,753 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:45:22,490 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 196 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:45:22,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935771510] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:45:22,491 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:45:22,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 85 [2024-11-28 04:45:22,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436087972] [2024-11-28 04:45:22,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:45:22,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2024-11-28 04:45:22,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:45:22,492 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2024-11-28 04:45:22,493 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1265, Invalid=5875, Unknown=0, NotChecked=0, Total=7140 [2024-11-28 04:45:22,493 INFO L87 Difference]: Start difference. First operand 108 states and 111 transitions. Second operand has 85 states, 85 states have (on average 2.0) internal successors, (170), 85 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:45:23,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:45:23,001 INFO L93 Difference]: Finished difference Result 155 states and 161 transitions. [2024-11-28 04:45:23,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-28 04:45:23,001 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 2.0) internal successors, (170), 85 states have internal predecessors, (170), 0 states have call successors, (0), 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 73 [2024-11-28 04:45:23,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:45:23,002 INFO L225 Difference]: With dead ends: 155 [2024-11-28 04:45:23,002 INFO L226 Difference]: Without dead ends: 112 [2024-11-28 04:45:23,003 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 80 SyntacticMatches, 17 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4504 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1288, Invalid=6022, Unknown=0, NotChecked=0, Total=7310 [2024-11-28 04:45:23,003 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 10 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:45:23,003 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 106 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:45:23,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-11-28 04:45:23,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 111. [2024-11-28 04:45:23,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 1.0454545454545454) internal successors, (115), 110 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:45:23,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 115 transitions. [2024-11-28 04:45:23,027 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 115 transitions. Word has length 73 [2024-11-28 04:45:23,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:45:23,027 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 115 transitions. [2024-11-28 04:45:23,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 2.0) internal successors, (170), 85 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:45:23,028 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 115 transitions. [2024-11-28 04:45:23,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-28 04:45:23,028 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:45:23,028 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:45:23,038 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2024-11-28 04:45:23,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2024-11-28 04:45:23,229 INFO L396 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:45:23,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:45:23,229 INFO L85 PathProgramCache]: Analyzing trace with hash -552172818, now seen corresponding path program 25 times [2024-11-28 04:45:23,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:45:23,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838889799] [2024-11-28 04:45:23,229 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:45:23,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:45:23,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:24,379 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 169 proven. 223 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:45:24,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:45:24,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838889799] [2024-11-28 04:45:24,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838889799] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:45:24,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825165294] [2024-11-28 04:45:24,380 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:45:24,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:45:24,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:45:24,381 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:45:24,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2024-11-28 04:45:24,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:24,472 INFO L256 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-28 04:45:24,474 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:45:25,934 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 196 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:45:25,934 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:45:27,163 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 196 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:45:27,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825165294] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:45:27,164 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:45:27,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 85 [2024-11-28 04:45:27,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434636829] [2024-11-28 04:45:27,164 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:45:27,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2024-11-28 04:45:27,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:45:27,165 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2024-11-28 04:45:27,165 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1303, Invalid=5837, Unknown=0, NotChecked=0, Total=7140 [2024-11-28 04:45:27,165 INFO L87 Difference]: Start difference. First operand 111 states and 115 transitions. Second operand has 85 states, 85 states have (on average 2.011764705882353) internal successors, (171), 85 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:45:27,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:45:27,745 INFO L93 Difference]: Finished difference Result 125 states and 130 transitions. [2024-11-28 04:45:27,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-28 04:45:27,746 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 2.011764705882353) internal successors, (171), 85 states have internal predecessors, (171), 0 states have call successors, (0), 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 73 [2024-11-28 04:45:27,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:45:27,746 INFO L225 Difference]: With dead ends: 125 [2024-11-28 04:45:27,746 INFO L226 Difference]: Without dead ends: 118 [2024-11-28 04:45:27,747 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 82 SyntacticMatches, 15 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4954 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1374, Invalid=6108, Unknown=0, NotChecked=0, Total=7482 [2024-11-28 04:45:27,747 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 9 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 682 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:45:27,747 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 135 Invalid, 688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 682 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:45:27,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-11-28 04:45:27,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 113. [2024-11-28 04:45:27,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.0446428571428572) internal successors, (117), 112 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:45:27,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 117 transitions. [2024-11-28 04:45:27,776 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 117 transitions. Word has length 73 [2024-11-28 04:45:27,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:45:27,776 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 117 transitions. [2024-11-28 04:45:27,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 2.011764705882353) internal successors, (171), 85 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:45:27,776 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 117 transitions. [2024-11-28 04:45:27,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-28 04:45:27,777 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:45:27,777 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:45:27,787 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2024-11-28 04:45:27,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2024-11-28 04:45:27,977 INFO L396 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:45:27,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:45:27,978 INFO L85 PathProgramCache]: Analyzing trace with hash -2113790742, now seen corresponding path program 28 times [2024-11-28 04:45:27,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:45:27,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207912417] [2024-11-28 04:45:27,978 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:45:27,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:45:27,989 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:45:27,989 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:45:28,962 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 196 proven. 225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:45:28,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:45:28,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207912417] [2024-11-28 04:45:28,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207912417] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:45:28,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307643907] [2024-11-28 04:45:28,962 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:45:28,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:45:28,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:45:28,964 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:45:28,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2024-11-28 04:45:29,049 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:45:29,049 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:45:29,051 INFO L256 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-28 04:45:29,052 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:45:30,768 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 196 proven. 225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:45:30,768 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:45:32,057 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 225 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:45:32,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307643907] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:45:32,058 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:45:32,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 81 [2024-11-28 04:45:32,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245617453] [2024-11-28 04:45:32,058 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:45:32,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2024-11-28 04:45:32,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:45:32,059 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2024-11-28 04:45:32,059 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1226, Invalid=5254, Unknown=0, NotChecked=0, Total=6480 [2024-11-28 04:45:32,059 INFO L87 Difference]: Start difference. First operand 113 states and 117 transitions. Second operand has 81 states, 81 states have (on average 2.049382716049383) internal successors, (166), 81 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) [2024-11-28 04:45:32,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:45:32,523 INFO L93 Difference]: Finished difference Result 160 states and 165 transitions. [2024-11-28 04:45:32,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-28 04:45:32,524 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 2.049382716049383) internal successors, (166), 81 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 75 [2024-11-28 04:45:32,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:45:32,525 INFO L225 Difference]: With dead ends: 160 [2024-11-28 04:45:32,525 INFO L226 Difference]: Without dead ends: 153 [2024-11-28 04:45:32,525 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 87 SyntacticMatches, 17 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3789 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1295, Invalid=5511, Unknown=0, NotChecked=0, Total=6806 [2024-11-28 04:45:32,525 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 11 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:45:32,525 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 165 Invalid, 617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:45:32,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2024-11-28 04:45:32,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 115. [2024-11-28 04:45:32,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 1.043859649122807) internal successors, (119), 114 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:45:32,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 119 transitions. [2024-11-28 04:45:32,546 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 119 transitions. Word has length 75 [2024-11-28 04:45:32,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:45:32,546 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 119 transitions. [2024-11-28 04:45:32,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 2.049382716049383) internal successors, (166), 81 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) [2024-11-28 04:45:32,547 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 119 transitions. [2024-11-28 04:45:32,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-28 04:45:32,547 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:45:32,547 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:45:32,553 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2024-11-28 04:45:32,748 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2024-11-28 04:45:32,748 INFO L396 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:45:32,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:45:32,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1450117898, now seen corresponding path program 26 times [2024-11-28 04:45:32,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:45:32,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268496309] [2024-11-28 04:45:32,749 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:45:32,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:45:32,768 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:45:32,768 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:45:33,774 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 198 proven. 223 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:45:33,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:45:33,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268496309] [2024-11-28 04:45:33,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268496309] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:45:33,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152568419] [2024-11-28 04:45:33,774 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:45:33,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:45:33,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:45:33,776 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:45:33,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2024-11-28 04:45:33,867 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:45:33,867 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:45:33,868 INFO L256 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-28 04:45:33,869 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:45:35,464 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 225 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:45:35,464 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:45:36,957 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 225 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:45:36,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152568419] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:45:36,958 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:45:36,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 82 [2024-11-28 04:45:36,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121754480] [2024-11-28 04:45:36,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:45:36,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2024-11-28 04:45:36,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:45:36,959 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2024-11-28 04:45:36,960 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1247, Invalid=5395, Unknown=0, NotChecked=0, Total=6642 [2024-11-28 04:45:36,960 INFO L87 Difference]: Start difference. First operand 115 states and 119 transitions. Second operand has 82 states, 82 states have (on average 2.0609756097560976) internal successors, (169), 82 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:45:37,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:45:37,427 INFO L93 Difference]: Finished difference Result 158 states and 162 transitions. [2024-11-28 04:45:37,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-28 04:45:37,427 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 2.0609756097560976) internal successors, (169), 82 states have internal predecessors, (169), 0 states have call successors, (0), 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 75 [2024-11-28 04:45:37,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:45:37,428 INFO L225 Difference]: With dead ends: 158 [2024-11-28 04:45:37,428 INFO L226 Difference]: Without dead ends: 115 [2024-11-28 04:45:37,429 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 88 SyntacticMatches, 15 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4157 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1291, Invalid=5681, Unknown=0, NotChecked=0, Total=6972 [2024-11-28 04:45:37,429 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 11 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:45:37,429 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 106 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:45:37,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-11-28 04:45:37,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 114. [2024-11-28 04:45:37,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 113 states have (on average 1.0353982300884956) internal successors, (117), 113 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:45:37,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 117 transitions. [2024-11-28 04:45:37,446 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 117 transitions. Word has length 75 [2024-11-28 04:45:37,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:45:37,446 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 117 transitions. [2024-11-28 04:45:37,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 82 states have (on average 2.0609756097560976) internal successors, (169), 82 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:45:37,447 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 117 transitions. [2024-11-28 04:45:37,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-28 04:45:37,447 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:45:37,447 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:45:37,458 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2024-11-28 04:45:37,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2024-11-28 04:45:37,648 INFO L396 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:45:37,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:45:37,648 INFO L85 PathProgramCache]: Analyzing trace with hash 545484166, now seen corresponding path program 29 times [2024-11-28 04:45:37,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:45:37,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463758028] [2024-11-28 04:45:37,648 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:45:37,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:45:37,656 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2024-11-28 04:45:37,656 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:45:38,876 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 225 proven. 225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:45:38,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:45:38,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463758028] [2024-11-28 04:45:38,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463758028] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:45:38,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960842137] [2024-11-28 04:45:38,877 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:45:38,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:45:38,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:45:38,879 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:45:38,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2024-11-28 04:45:38,975 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2024-11-28 04:45:38,975 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:45:38,976 INFO L256 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-28 04:45:38,978 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:45:40,768 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 225 proven. 225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:45:40,769 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:45:42,589 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 225 proven. 225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:45:42,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [960842137] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:45:42,589 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:45:42,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38, 38] total 89 [2024-11-28 04:45:42,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345081795] [2024-11-28 04:45:42,589 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:45:42,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2024-11-28 04:45:42,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:45:42,591 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2024-11-28 04:45:42,591 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1397, Invalid=6435, Unknown=0, NotChecked=0, Total=7832 [2024-11-28 04:45:42,591 INFO L87 Difference]: Start difference. First operand 114 states and 117 transitions. Second operand has 89 states, 89 states have (on average 1.9887640449438202) internal successors, (177), 89 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:45:43,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:45:43,162 INFO L93 Difference]: Finished difference Result 163 states and 169 transitions. [2024-11-28 04:45:43,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-28 04:45:43,163 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 1.9887640449438202) internal successors, (177), 89 states have internal predecessors, (177), 0 states have call successors, (0), 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 77 [2024-11-28 04:45:43,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:45:43,164 INFO L225 Difference]: With dead ends: 163 [2024-11-28 04:45:43,164 INFO L226 Difference]: Without dead ends: 118 [2024-11-28 04:45:43,164 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 84 SyntacticMatches, 19 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4600 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1420, Invalid=6590, Unknown=0, NotChecked=0, Total=8010 [2024-11-28 04:45:43,165 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 9 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 687 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:45:43,165 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 118 Invalid, 692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 687 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:45:43,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-11-28 04:45:43,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 117. [2024-11-28 04:45:43,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 116 states have (on average 1.043103448275862) internal successors, (121), 116 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:45:43,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 121 transitions. [2024-11-28 04:45:43,206 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 121 transitions. Word has length 77 [2024-11-28 04:45:43,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:45:43,207 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 121 transitions. [2024-11-28 04:45:43,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 1.9887640449438202) internal successors, (177), 89 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:45:43,207 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 121 transitions. [2024-11-28 04:45:43,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-28 04:45:43,208 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:45:43,208 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:45:43,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2024-11-28 04:45:43,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable60 [2024-11-28 04:45:43,408 INFO L396 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:45:43,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:45:43,409 INFO L85 PathProgramCache]: Analyzing trace with hash 736372358, now seen corresponding path program 27 times [2024-11-28 04:45:43,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:45:43,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439367189] [2024-11-28 04:45:43,409 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:45:43,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:45:43,419 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2024-11-28 04:45:43,419 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:45:44,756 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 196 proven. 254 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:45:44,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:45:44,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439367189] [2024-11-28 04:45:44,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439367189] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:45:44,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625391568] [2024-11-28 04:45:44,756 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:45:44,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:45:44,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:45:44,758 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:45:44,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2024-11-28 04:45:44,863 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2024-11-28 04:45:44,863 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:45:44,864 INFO L256 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-28 04:45:44,866 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:45:46,460 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 225 proven. 225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:45:46,460 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:45:47,898 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 225 proven. 225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:45:47,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625391568] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:45:47,898 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:45:47,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38, 38] total 90 [2024-11-28 04:45:47,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841516490] [2024-11-28 04:45:47,899 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:45:47,899 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2024-11-28 04:45:47,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:45:47,900 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2024-11-28 04:45:47,901 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1460, Invalid=6550, Unknown=0, NotChecked=0, Total=8010 [2024-11-28 04:45:47,901 INFO L87 Difference]: Start difference. First operand 117 states and 121 transitions. Second operand has 90 states, 90 states have (on average 2.011111111111111) internal successors, (181), 90 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:45:48,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:45:48,374 INFO L93 Difference]: Finished difference Result 131 states and 136 transitions. [2024-11-28 04:45:48,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-28 04:45:48,374 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 2.011111111111111) internal successors, (181), 90 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2024-11-28 04:45:48,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:45:48,375 INFO L225 Difference]: With dead ends: 131 [2024-11-28 04:45:48,375 INFO L226 Difference]: Without dead ends: 124 [2024-11-28 04:45:48,375 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 86 SyntacticMatches, 16 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5596 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1535, Invalid=6837, Unknown=0, NotChecked=0, Total=8372 [2024-11-28 04:45:48,376 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 9 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:45:48,376 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 95 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:45:48,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2024-11-28 04:45:48,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 119. [2024-11-28 04:45:48,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.0423728813559323) internal successors, (123), 118 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:45:48,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 123 transitions. [2024-11-28 04:45:48,407 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 123 transitions. Word has length 77 [2024-11-28 04:45:48,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:45:48,407 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 123 transitions. [2024-11-28 04:45:48,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 90 states have (on average 2.011111111111111) internal successors, (181), 90 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:45:48,407 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 123 transitions. [2024-11-28 04:45:48,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-28 04:45:48,408 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:45:48,408 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:45:48,419 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2024-11-28 04:45:48,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:45:48,609 INFO L396 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:45:48,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:45:48,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1830787586, now seen corresponding path program 30 times [2024-11-28 04:45:48,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:45:48,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792848162] [2024-11-28 04:45:48,609 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:45:48,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:45:48,620 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2024-11-28 04:45:48,620 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:45:49,872 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 196 proven. 285 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:45:49,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:45:49,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792848162] [2024-11-28 04:45:49,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792848162] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:45:49,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255664208] [2024-11-28 04:45:49,873 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:45:49,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:45:49,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:45:49,874 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:45:49,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2024-11-28 04:45:49,975 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2024-11-28 04:45:49,975 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:45:49,976 INFO L256 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-28 04:45:49,978 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:45:51,547 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 225 proven. 256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:45:51,547 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:45:52,945 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 256 proven. 225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:45:52,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255664208] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:45:52,945 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:45:52,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 37, 37] total 89 [2024-11-28 04:45:52,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524232850] [2024-11-28 04:45:52,945 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:45:52,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2024-11-28 04:45:52,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:45:52,946 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2024-11-28 04:45:52,947 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1473, Invalid=6359, Unknown=0, NotChecked=0, Total=7832 [2024-11-28 04:45:52,947 INFO L87 Difference]: Start difference. First operand 119 states and 123 transitions. Second operand has 89 states, 89 states have (on average 2.056179775280899) internal successors, (183), 89 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:45:53,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:45:53,497 INFO L93 Difference]: Finished difference Result 168 states and 173 transitions. [2024-11-28 04:45:53,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-28 04:45:53,498 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 2.056179775280899) internal successors, (183), 89 states have internal predecessors, (183), 0 states have call successors, (0), 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 79 [2024-11-28 04:45:53,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:45:53,499 INFO L225 Difference]: With dead ends: 168 [2024-11-28 04:45:53,499 INFO L226 Difference]: Without dead ends: 161 [2024-11-28 04:45:53,499 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 91 SyntacticMatches, 16 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5563 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1548, Invalid=6642, Unknown=0, NotChecked=0, Total=8190 [2024-11-28 04:45:53,500 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 14 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:45:53,500 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 165 Invalid, 642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:45:53,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2024-11-28 04:45:53,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 121. [2024-11-28 04:45:53,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.0416666666666667) internal successors, (125), 120 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:45:53,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 125 transitions. [2024-11-28 04:45:53,518 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 125 transitions. Word has length 79 [2024-11-28 04:45:53,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:45:53,518 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 125 transitions. [2024-11-28 04:45:53,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 2.056179775280899) internal successors, (183), 89 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:45:53,518 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 125 transitions. [2024-11-28 04:45:53,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-28 04:45:53,519 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:45:53,519 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:45:53,525 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2024-11-28 04:45:53,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:45:53,720 INFO L396 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:45:53,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:45:53,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1503516510, now seen corresponding path program 28 times [2024-11-28 04:45:53,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:45:53,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277261745] [2024-11-28 04:45:53,720 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:45:53,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:45:53,728 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:45:53,728 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:45:54,902 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 256 proven. 225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:45:54,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:45:54,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277261745] [2024-11-28 04:45:54,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277261745] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:45:54,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112629829] [2024-11-28 04:45:54,903 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:45:54,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:45:54,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:45:54,905 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:45:54,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2024-11-28 04:45:55,016 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:45:55,016 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:45:55,018 INFO L256 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-28 04:45:55,020 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:45:56,786 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 256 proven. 225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:45:56,786 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:45:58,373 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 256 proven. 225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:45:58,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112629829] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:45:58,373 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:45:58,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 86 [2024-11-28 04:45:58,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696113043] [2024-11-28 04:45:58,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:45:58,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2024-11-28 04:45:58,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:45:58,375 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2024-11-28 04:45:58,375 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1379, Invalid=5931, Unknown=0, NotChecked=0, Total=7310 [2024-11-28 04:45:58,375 INFO L87 Difference]: Start difference. First operand 121 states and 125 transitions. Second operand has 86 states, 86 states have (on average 2.046511627906977) internal successors, (176), 86 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:45:58,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:45:58,915 INFO L93 Difference]: Finished difference Result 166 states and 170 transitions. [2024-11-28 04:45:58,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-28 04:45:58,915 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 2.046511627906977) internal successors, (176), 86 states have internal predecessors, (176), 0 states have call successors, (0), 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 79 [2024-11-28 04:45:58,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:45:58,916 INFO L225 Difference]: With dead ends: 166 [2024-11-28 04:45:58,916 INFO L226 Difference]: Without dead ends: 121 [2024-11-28 04:45:58,916 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 91 SyntacticMatches, 18 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4305 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1424, Invalid=6232, Unknown=0, NotChecked=0, Total=7656 [2024-11-28 04:45:58,917 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 10 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 591 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:45:58,917 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 122 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 591 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:45:58,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2024-11-28 04:45:58,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 120. [2024-11-28 04:45:58,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.0336134453781514) internal successors, (123), 119 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:45:58,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 123 transitions. [2024-11-28 04:45:58,944 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 123 transitions. Word has length 79 [2024-11-28 04:45:58,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:45:58,945 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 123 transitions. [2024-11-28 04:45:58,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 2.046511627906977) internal successors, (176), 86 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:45:58,945 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 123 transitions. [2024-11-28 04:45:58,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-28 04:45:58,945 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:45:58,945 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:45:58,958 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2024-11-28 04:45:59,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:45:59,146 INFO L396 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:45:59,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:45:59,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1170864994, now seen corresponding path program 31 times [2024-11-28 04:45:59,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:45:59,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373952243] [2024-11-28 04:45:59,146 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:45:59,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:45:59,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:46:00,294 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 225 proven. 287 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:46:00,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:46:00,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373952243] [2024-11-28 04:46:00,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373952243] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:46:00,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [243229501] [2024-11-28 04:46:00,294 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:46:00,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:46:00,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:46:00,297 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:46:00,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2024-11-28 04:46:00,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:46:00,391 INFO L256 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-28 04:46:00,393 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:46:02,222 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 256 proven. 256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:46:02,222 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:46:03,804 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 256 proven. 256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:46:03,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [243229501] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:46:03,804 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:46:03,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40, 40] total 96 [2024-11-28 04:46:03,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730214521] [2024-11-28 04:46:03,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:46:03,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2024-11-28 04:46:03,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:46:03,806 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2024-11-28 04:46:03,806 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1619, Invalid=7501, Unknown=0, NotChecked=0, Total=9120 [2024-11-28 04:46:03,806 INFO L87 Difference]: Start difference. First operand 120 states and 123 transitions. Second operand has 96 states, 96 states have (on average 1.9895833333333333) internal successors, (191), 96 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:46:04,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:46:04,492 INFO L93 Difference]: Finished difference Result 171 states and 177 transitions. [2024-11-28 04:46:04,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-28 04:46:04,492 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 1.9895833333333333) internal successors, (191), 96 states have internal predecessors, (191), 0 states have call successors, (0), 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 81 [2024-11-28 04:46:04,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:46:04,493 INFO L225 Difference]: With dead ends: 171 [2024-11-28 04:46:04,493 INFO L226 Difference]: Without dead ends: 124 [2024-11-28 04:46:04,493 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 88 SyntacticMatches, 18 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6446 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1655, Invalid=7851, Unknown=0, NotChecked=0, Total=9506 [2024-11-28 04:46:04,494 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 7 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 765 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:46:04,494 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 127 Invalid, 772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 765 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 04:46:04,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2024-11-28 04:46:04,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 123. [2024-11-28 04:46:04,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 1.040983606557377) internal successors, (127), 122 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:46:04,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 127 transitions. [2024-11-28 04:46:04,528 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 127 transitions. Word has length 81 [2024-11-28 04:46:04,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:46:04,528 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 127 transitions. [2024-11-28 04:46:04,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 1.9895833333333333) internal successors, (191), 96 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:46:04,529 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 127 transitions. [2024-11-28 04:46:04,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-28 04:46:04,529 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:46:04,529 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:46:04,540 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2024-11-28 04:46:04,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:46:04,730 INFO L396 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:46:04,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:46:04,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1017456158, now seen corresponding path program 29 times [2024-11-28 04:46:04,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:46:04,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741622481] [2024-11-28 04:46:04,731 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:46:04,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:46:04,739 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2024-11-28 04:46:04,739 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:46:05,899 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 256 proven. 256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:46:05,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:46:05,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741622481] [2024-11-28 04:46:05,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741622481] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:46:05,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95083752] [2024-11-28 04:46:05,900 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:46:05,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:46:05,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:46:05,901 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:46:05,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2024-11-28 04:46:05,996 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2024-11-28 04:46:05,996 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:46:05,997 INFO L256 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-28 04:46:05,998 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:46:08,207 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 256 proven. 256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:46:08,207 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:46:09,842 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 256 proven. 256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:46:09,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95083752] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:46:09,843 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:46:09,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40, 40] total 93 [2024-11-28 04:46:09,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249799804] [2024-11-28 04:46:09,843 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:46:09,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2024-11-28 04:46:09,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:46:09,844 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2024-11-28 04:46:09,844 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1550, Invalid=7006, Unknown=0, NotChecked=0, Total=8556 [2024-11-28 04:46:09,844 INFO L87 Difference]: Start difference. First operand 123 states and 127 transitions. Second operand has 93 states, 93 states have (on average 2.010752688172043) internal successors, (187), 93 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:46:10,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:46:10,314 INFO L93 Difference]: Finished difference Result 137 states and 142 transitions. [2024-11-28 04:46:10,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-28 04:46:10,314 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 93 states have (on average 2.010752688172043) internal successors, (187), 93 states have internal predecessors, (187), 0 states have call successors, (0), 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 81 [2024-11-28 04:46:10,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:46:10,315 INFO L225 Difference]: With dead ends: 137 [2024-11-28 04:46:10,315 INFO L226 Difference]: Without dead ends: 130 [2024-11-28 04:46:10,315 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 90 SyntacticMatches, 19 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5046 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1628, Invalid=7302, Unknown=0, NotChecked=0, Total=8930 [2024-11-28 04:46:10,316 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 9 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:46:10,316 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 126 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:46:10,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-11-28 04:46:10,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 125. [2024-11-28 04:46:10,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 1.0403225806451613) internal successors, (129), 124 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:46:10,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 129 transitions. [2024-11-28 04:46:10,359 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 129 transitions. Word has length 81 [2024-11-28 04:46:10,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:46:10,359 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 129 transitions. [2024-11-28 04:46:10,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 93 states have (on average 2.010752688172043) internal successors, (187), 93 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:46:10,360 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 129 transitions. [2024-11-28 04:46:10,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-28 04:46:10,360 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:46:10,360 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:46:10,375 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2024-11-28 04:46:10,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:46:10,561 INFO L396 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:46:10,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:46:10,561 INFO L85 PathProgramCache]: Analyzing trace with hash -877685990, now seen corresponding path program 32 times [2024-11-28 04:46:10,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:46:10,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304852444] [2024-11-28 04:46:10,561 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:46:10,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:46:10,570 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:46:10,570 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:46:11,863 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 225 proven. 320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:46:11,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:46:11,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304852444] [2024-11-28 04:46:11,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304852444] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:46:11,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946773469] [2024-11-28 04:46:11,864 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:46:11,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:46:11,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:46:11,867 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:46:11,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2024-11-28 04:46:11,966 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:46:11,966 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:46:11,967 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-28 04:46:11,969 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:46:13,675 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 256 proven. 289 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:46:13,675 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:46:15,255 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 289 proven. 256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:46:15,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [946773469] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:46:15,256 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:46:15,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 39, 39] total 94 [2024-11-28 04:46:15,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535763544] [2024-11-28 04:46:15,256 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:46:15,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2024-11-28 04:46:15,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:46:15,257 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2024-11-28 04:46:15,258 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1640, Invalid=7102, Unknown=0, NotChecked=0, Total=8742 [2024-11-28 04:46:15,258 INFO L87 Difference]: Start difference. First operand 125 states and 129 transitions. Second operand has 94 states, 94 states have (on average 2.0531914893617023) internal successors, (193), 94 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:46:15,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:46:15,790 INFO L93 Difference]: Finished difference Result 176 states and 181 transitions. [2024-11-28 04:46:15,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-28 04:46:15,791 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 2.0531914893617023) internal successors, (193), 94 states have internal predecessors, (193), 0 states have call successors, (0), 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 83 [2024-11-28 04:46:15,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:46:15,791 INFO L225 Difference]: With dead ends: 176 [2024-11-28 04:46:15,791 INFO L226 Difference]: Without dead ends: 169 [2024-11-28 04:46:15,792 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 95 SyntacticMatches, 17 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6242 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1719, Invalid=7401, Unknown=0, NotChecked=0, Total=9120 [2024-11-28 04:46:15,794 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 14 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:46:15,795 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 113 Invalid, 628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 620 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:46:15,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2024-11-28 04:46:15,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 127. [2024-11-28 04:46:15,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.0396825396825398) internal successors, (131), 126 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:46:15,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 131 transitions. [2024-11-28 04:46:15,819 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 131 transitions. Word has length 83 [2024-11-28 04:46:15,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:46:15,819 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 131 transitions. [2024-11-28 04:46:15,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 94 states have (on average 2.0531914893617023) internal successors, (193), 94 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:46:15,819 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 131 transitions. [2024-11-28 04:46:15,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-28 04:46:15,820 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:46:15,820 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:46:15,828 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2024-11-28 04:46:16,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:46:16,020 INFO L396 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:46:16,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:46:16,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1964924358, now seen corresponding path program 30 times [2024-11-28 04:46:16,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:46:16,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728598686] [2024-11-28 04:46:16,021 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:46:16,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:46:16,033 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2024-11-28 04:46:16,033 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:46:17,157 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 258 proven. 287 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:46:17,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:46:17,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728598686] [2024-11-28 04:46:17,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728598686] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:46:17,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578607778] [2024-11-28 04:46:17,158 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:46:17,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:46:17,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:46:17,160 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:46:17,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2024-11-28 04:46:17,264 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2024-11-28 04:46:17,264 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:46:17,265 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-28 04:46:17,267 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:46:19,127 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 289 proven. 256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:46:19,128 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:46:20,556 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 289 proven. 256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:46:20,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578607778] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:46:20,557 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:46:20,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 39, 39] total 94 [2024-11-28 04:46:20,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089520598] [2024-11-28 04:46:20,557 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:46:20,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2024-11-28 04:46:20,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:46:20,558 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2024-11-28 04:46:20,559 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1624, Invalid=7118, Unknown=0, NotChecked=0, Total=8742 [2024-11-28 04:46:20,559 INFO L87 Difference]: Start difference. First operand 127 states and 131 transitions. Second operand has 94 states, 94 states have (on average 2.0319148936170213) internal successors, (191), 94 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:46:21,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:46:21,111 INFO L93 Difference]: Finished difference Result 174 states and 178 transitions. [2024-11-28 04:46:21,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-28 04:46:21,112 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 2.0319148936170213) internal successors, (191), 94 states have internal predecessors, (191), 0 states have call successors, (0), 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 83 [2024-11-28 04:46:21,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:46:21,112 INFO L225 Difference]: With dead ends: 174 [2024-11-28 04:46:21,112 INFO L226 Difference]: Without dead ends: 127 [2024-11-28 04:46:21,113 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 95 SyntacticMatches, 17 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6203 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1675, Invalid=7445, Unknown=0, NotChecked=0, Total=9120 [2024-11-28 04:46:21,113 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 11 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:46:21,113 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 140 Invalid, 642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 639 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:46:21,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-11-28 04:46:21,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 126. [2024-11-28 04:46:21,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 1.032) internal successors, (129), 125 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:46:21,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 129 transitions. [2024-11-28 04:46:21,132 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 129 transitions. Word has length 83 [2024-11-28 04:46:21,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:46:21,132 INFO L471 AbstractCegarLoop]: Abstraction has 126 states and 129 transitions. [2024-11-28 04:46:21,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 94 states have (on average 2.0319148936170213) internal successors, (191), 94 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:46:21,132 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 129 transitions. [2024-11-28 04:46:21,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-28 04:46:21,133 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:46:21,133 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:46:21,139 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2024-11-28 04:46:21,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2024-11-28 04:46:21,333 INFO L396 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:46:21,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:46:21,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1263790154, now seen corresponding path program 33 times [2024-11-28 04:46:21,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:46:21,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332388586] [2024-11-28 04:46:21,334 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:46:21,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:46:21,348 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2024-11-28 04:46:21,348 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:46:22,669 INFO L134 CoverageAnalysis]: Checked inductivity of 578 backedges. 256 proven. 322 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:46:22,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:46:22,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332388586] [2024-11-28 04:46:22,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332388586] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:46:22,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857951121] [2024-11-28 04:46:22,670 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:46:22,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:46:22,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:46:22,672 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:46:22,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2024-11-28 04:46:22,786 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2024-11-28 04:46:22,786 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:46:22,787 INFO L256 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-28 04:46:22,789 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:46:24,912 INFO L134 CoverageAnalysis]: Checked inductivity of 578 backedges. 289 proven. 289 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:46:24,913 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:46:26,729 INFO L134 CoverageAnalysis]: Checked inductivity of 578 backedges. 289 proven. 289 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:46:26,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857951121] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:46:26,729 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:46:26,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 101 [2024-11-28 04:46:26,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723919188] [2024-11-28 04:46:26,730 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:46:26,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2024-11-28 04:46:26,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:46:26,731 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2024-11-28 04:46:26,732 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1793, Invalid=8307, Unknown=0, NotChecked=0, Total=10100 [2024-11-28 04:46:26,732 INFO L87 Difference]: Start difference. First operand 126 states and 129 transitions. Second operand has 101 states, 101 states have (on average 1.99009900990099) internal successors, (201), 101 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:46:27,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:46:27,377 INFO L93 Difference]: Finished difference Result 179 states and 185 transitions. [2024-11-28 04:46:27,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-28 04:46:27,378 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 1.99009900990099) internal successors, (201), 101 states have internal predecessors, (201), 0 states have call successors, (0), 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 85 [2024-11-28 04:46:27,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:46:27,379 INFO L225 Difference]: With dead ends: 179 [2024-11-28 04:46:27,379 INFO L226 Difference]: Without dead ends: 130 [2024-11-28 04:46:27,379 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 93 SyntacticMatches, 18 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7120 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1830, Invalid=8676, Unknown=0, NotChecked=0, Total=10506 [2024-11-28 04:46:27,379 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 8 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 621 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:46:27,380 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 79 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 621 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:46:27,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-11-28 04:46:27,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 129. [2024-11-28 04:46:27,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 128 states have (on average 1.0390625) internal successors, (133), 128 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:46:27,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 133 transitions. [2024-11-28 04:46:27,401 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 133 transitions. Word has length 85 [2024-11-28 04:46:27,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:46:27,401 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 133 transitions. [2024-11-28 04:46:27,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 1.99009900990099) internal successors, (201), 101 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:46:27,401 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 133 transitions. [2024-11-28 04:46:27,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-28 04:46:27,402 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:46:27,402 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:46:27,412 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2024-11-28 04:46:27,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:46:27,602 INFO L396 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:46:27,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:46:27,603 INFO L85 PathProgramCache]: Analyzing trace with hash 607224246, now seen corresponding path program 31 times [2024-11-28 04:46:27,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:46:27,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338269639] [2024-11-28 04:46:27,603 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:46:27,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:46:27,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:46:29,220 INFO L134 CoverageAnalysis]: Checked inductivity of 578 backedges. 256 proven. 322 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:46:29,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:46:29,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338269639] [2024-11-28 04:46:29,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338269639] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:46:29,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731652350] [2024-11-28 04:46:29,220 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:46:29,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:46:29,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:46:29,225 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:46:29,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2024-11-28 04:46:29,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:46:29,342 INFO L256 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-28 04:46:29,345 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:46:31,517 INFO L134 CoverageAnalysis]: Checked inductivity of 578 backedges. 289 proven. 289 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:46:31,517 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:46:33,242 INFO L134 CoverageAnalysis]: Checked inductivity of 578 backedges. 289 proven. 289 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:46:33,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731652350] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:46:33,242 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:46:33,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 100 [2024-11-28 04:46:33,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136703016] [2024-11-28 04:46:33,242 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:46:33,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2024-11-28 04:46:33,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:46:33,244 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2024-11-28 04:46:33,244 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1801, Invalid=8099, Unknown=0, NotChecked=0, Total=9900 [2024-11-28 04:46:33,244 INFO L87 Difference]: Start difference. First operand 129 states and 133 transitions. Second operand has 100 states, 100 states have (on average 2.01) internal successors, (201), 100 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:46:33,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:46:33,820 INFO L93 Difference]: Finished difference Result 143 states and 148 transitions. [2024-11-28 04:46:33,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-28 04:46:33,821 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 2.01) internal successors, (201), 100 states have internal predecessors, (201), 0 states have call successors, (0), 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 85 [2024-11-28 04:46:33,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:46:33,821 INFO L225 Difference]: With dead ends: 143 [2024-11-28 04:46:33,821 INFO L226 Difference]: Without dead ends: 136 [2024-11-28 04:46:33,822 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 94 SyntacticMatches, 18 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6997 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=1884, Invalid=8418, Unknown=0, NotChecked=0, Total=10302 [2024-11-28 04:46:33,822 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 11 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:46:33,822 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 82 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:46:33,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-11-28 04:46:33,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 131. [2024-11-28 04:46:33,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 1.0384615384615385) internal successors, (135), 130 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:46:33,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 135 transitions. [2024-11-28 04:46:33,848 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 135 transitions. Word has length 85 [2024-11-28 04:46:33,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:46:33,848 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 135 transitions. [2024-11-28 04:46:33,849 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 100 states have (on average 2.01) internal successors, (201), 100 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:46:33,849 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 135 transitions. [2024-11-28 04:46:33,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-28 04:46:33,849 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:46:33,849 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:46:33,856 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2024-11-28 04:46:34,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69,65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:46:34,050 INFO L396 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:46:34,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:46:34,050 INFO L85 PathProgramCache]: Analyzing trace with hash 964823090, now seen corresponding path program 34 times [2024-11-28 04:46:34,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:46:34,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126674760] [2024-11-28 04:46:34,050 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:46:34,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:46:34,057 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:46:34,058 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:46:35,421 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 289 proven. 324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:46:35,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:46:35,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126674760] [2024-11-28 04:46:35,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126674760] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:46:35,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139947202] [2024-11-28 04:46:35,422 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:46:35,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:46:35,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:46:35,423 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:46:35,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2024-11-28 04:46:35,525 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:46:35,525 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:46:35,527 INFO L256 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-28 04:46:35,529 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:46:38,039 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 289 proven. 324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:46:38,039 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:46:39,887 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 324 proven. 289 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:46:39,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139947202] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:46:39,887 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:46:39,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 96 [2024-11-28 04:46:39,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169908726] [2024-11-28 04:46:39,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:46:39,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2024-11-28 04:46:39,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:46:39,889 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2024-11-28 04:46:39,889 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1712, Invalid=7408, Unknown=0, NotChecked=0, Total=9120 [2024-11-28 04:46:39,889 INFO L87 Difference]: Start difference. First operand 131 states and 135 transitions. Second operand has 96 states, 96 states have (on average 2.0416666666666665) internal successors, (196), 96 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:46:40,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:46:40,362 INFO L93 Difference]: Finished difference Result 184 states and 189 transitions. [2024-11-28 04:46:40,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-11-28 04:46:40,363 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 2.0416666666666665) internal successors, (196), 96 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2024-11-28 04:46:40,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:46:40,364 INFO L225 Difference]: With dead ends: 184 [2024-11-28 04:46:40,364 INFO L226 Difference]: Without dead ends: 177 [2024-11-28 04:46:40,364 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 99 SyntacticMatches, 20 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5439 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1793, Invalid=7713, Unknown=0, NotChecked=0, Total=9506 [2024-11-28 04:46:40,365 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 15 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:46:40,365 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 123 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:46:40,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2024-11-28 04:46:40,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 133. [2024-11-28 04:46:40,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.0378787878787878) internal successors, (137), 132 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:46:40,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 137 transitions. [2024-11-28 04:46:40,412 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 137 transitions. Word has length 87 [2024-11-28 04:46:40,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:46:40,413 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 137 transitions. [2024-11-28 04:46:40,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 2.0416666666666665) internal successors, (196), 96 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:46:40,413 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 137 transitions. [2024-11-28 04:46:40,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-28 04:46:40,414 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:46:40,414 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:46:40,425 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2024-11-28 04:46:40,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:46:40,615 INFO L396 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:46:40,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:46:40,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1060800558, now seen corresponding path program 32 times [2024-11-28 04:46:40,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:46:40,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867462278] [2024-11-28 04:46:40,615 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:46:40,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:46:40,637 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:46:40,637 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:46:41,899 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 291 proven. 322 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:46:41,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:46:41,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867462278] [2024-11-28 04:46:41,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867462278] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:46:41,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835623540] [2024-11-28 04:46:41,900 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:46:41,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:46:41,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:46:41,901 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:46:41,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2024-11-28 04:46:41,997 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:46:41,998 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:46:41,999 INFO L256 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-28 04:46:42,000 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:46:43,914 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 324 proven. 289 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:46:43,914 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:46:45,488 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 324 proven. 289 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:46:45,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835623540] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:46:45,488 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:46:45,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 41, 41] total 99 [2024-11-28 04:46:45,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428055979] [2024-11-28 04:46:45,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:46:45,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2024-11-28 04:46:45,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:46:45,489 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2024-11-28 04:46:45,490 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1799, Invalid=7903, Unknown=0, NotChecked=0, Total=9702 [2024-11-28 04:46:45,490 INFO L87 Difference]: Start difference. First operand 133 states and 137 transitions. Second operand has 99 states, 99 states have (on average 2.0303030303030303) internal successors, (201), 99 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:46:46,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:46:46,051 INFO L93 Difference]: Finished difference Result 182 states and 186 transitions. [2024-11-28 04:46:46,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-28 04:46:46,051 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 99 states have (on average 2.0303030303030303) internal successors, (201), 99 states have internal predecessors, (201), 0 states have call successors, (0), 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 87 [2024-11-28 04:46:46,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:46:46,052 INFO L225 Difference]: With dead ends: 182 [2024-11-28 04:46:46,052 INFO L226 Difference]: Without dead ends: 133 [2024-11-28 04:46:46,052 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 99 SyntacticMatches, 18 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6919 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1852, Invalid=8248, Unknown=0, NotChecked=0, Total=10100 [2024-11-28 04:46:46,053 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 10 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:46:46,053 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 100 Invalid, 607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 603 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:46:46,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-11-28 04:46:46,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 132. [2024-11-28 04:46:46,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 1.0305343511450382) internal successors, (135), 131 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:46:46,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 135 transitions. [2024-11-28 04:46:46,077 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 135 transitions. Word has length 87 [2024-11-28 04:46:46,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:46:46,077 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 135 transitions. [2024-11-28 04:46:46,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 99 states have (on average 2.0303030303030303) internal successors, (201), 99 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:46:46,077 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 135 transitions. [2024-11-28 04:46:46,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-28 04:46:46,078 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:46:46,078 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:46:46,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2024-11-28 04:46:46,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:46:46,278 INFO L396 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:46:46,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:46:46,279 INFO L85 PathProgramCache]: Analyzing trace with hash -139090226, now seen corresponding path program 35 times [2024-11-28 04:46:46,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:46:46,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853954894] [2024-11-28 04:46:46,279 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:46:46,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:46:46,291 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2024-11-28 04:46:46,291 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:46:47,592 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 324 proven. 324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:46:47,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:46:47,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853954894] [2024-11-28 04:46:47,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853954894] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:46:47,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214364283] [2024-11-28 04:46:47,592 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:46:47,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:46:47,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:46:47,594 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:46:47,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2024-11-28 04:46:47,695 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2024-11-28 04:46:47,696 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:46:47,697 INFO L256 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-28 04:46:47,699 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:46:50,010 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 324 proven. 324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:46:50,010 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:46:51,820 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 324 proven. 324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:46:51,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214364283] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:46:51,820 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:46:51,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 44] total 105 [2024-11-28 04:46:51,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569475645] [2024-11-28 04:46:51,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:46:51,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2024-11-28 04:46:51,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:46:51,821 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2024-11-28 04:46:51,822 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1971, Invalid=8949, Unknown=0, NotChecked=0, Total=10920 [2024-11-28 04:46:51,822 INFO L87 Difference]: Start difference. First operand 132 states and 135 transitions. Second operand has 105 states, 105 states have (on average 1.980952380952381) internal successors, (208), 105 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:46:52,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:46:52,490 INFO L93 Difference]: Finished difference Result 187 states and 193 transitions. [2024-11-28 04:46:52,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-28 04:46:52,491 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 105 states have (on average 1.980952380952381) internal successors, (208), 105 states have internal predecessors, (208), 0 states have call successors, (0), 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 89 [2024-11-28 04:46:52,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:46:52,491 INFO L225 Difference]: With dead ends: 187 [2024-11-28 04:46:52,491 INFO L226 Difference]: Without dead ends: 136 [2024-11-28 04:46:52,492 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 96 SyntacticMatches, 21 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7793 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=2009, Invalid=9333, Unknown=0, NotChecked=0, Total=11342 [2024-11-28 04:46:52,492 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 8 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 712 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:46:52,492 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 130 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 712 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:46:52,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-11-28 04:46:52,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 135. [2024-11-28 04:46:52,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 134 states have (on average 1.037313432835821) internal successors, (139), 134 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:46:52,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 139 transitions. [2024-11-28 04:46:52,521 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 139 transitions. Word has length 89 [2024-11-28 04:46:52,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:46:52,522 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 139 transitions. [2024-11-28 04:46:52,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 105 states have (on average 1.980952380952381) internal successors, (208), 105 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:46:52,522 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 139 transitions. [2024-11-28 04:46:52,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-28 04:46:52,522 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:46:52,522 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:46:52,532 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2024-11-28 04:46:52,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:46:52,727 INFO L396 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:46:52,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:46:52,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1742813518, now seen corresponding path program 33 times [2024-11-28 04:46:52,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:46:52,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79833577] [2024-11-28 04:46:52,728 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:46:52,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:46:52,741 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2024-11-28 04:46:52,742 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:46:54,295 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 289 proven. 359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:46:54,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:46:54,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79833577] [2024-11-28 04:46:54,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79833577] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:46:54,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368273304] [2024-11-28 04:46:54,295 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:46:54,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:46:54,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:46:54,297 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:46:54,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2024-11-28 04:46:54,408 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2024-11-28 04:46:54,408 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:46:54,410 INFO L256 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-28 04:46:54,412 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:46:56,482 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 324 proven. 324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:46:56,483 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:46:58,269 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 324 proven. 324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:46:58,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368273304] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:46:58,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:46:58,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 44] total 105 [2024-11-28 04:46:58,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357337132] [2024-11-28 04:46:58,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:46:58,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2024-11-28 04:46:58,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:46:58,271 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2024-11-28 04:46:58,271 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1985, Invalid=8935, Unknown=0, NotChecked=0, Total=10920 [2024-11-28 04:46:58,272 INFO L87 Difference]: Start difference. First operand 135 states and 139 transitions. Second operand has 105 states, 105 states have (on average 2.0095238095238095) internal successors, (211), 105 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:46:59,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:46:59,008 INFO L93 Difference]: Finished difference Result 149 states and 154 transitions. [2024-11-28 04:46:59,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-28 04:46:59,009 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 105 states have (on average 2.0095238095238095) internal successors, (211), 105 states have internal predecessors, (211), 0 states have call successors, (0), 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 89 [2024-11-28 04:46:59,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:46:59,010 INFO L225 Difference]: With dead ends: 149 [2024-11-28 04:46:59,010 INFO L226 Difference]: Without dead ends: 142 [2024-11-28 04:46:59,010 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 98 SyntacticMatches, 19 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7756 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=2072, Invalid=9270, Unknown=0, NotChecked=0, Total=11342 [2024-11-28 04:46:59,010 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 9 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 880 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:46:59,011 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 130 Invalid, 887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 880 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 04:46:59,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-11-28 04:46:59,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 137. [2024-11-28 04:46:59,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 136 states have (on average 1.036764705882353) internal successors, (141), 136 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:46:59,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 141 transitions. [2024-11-28 04:46:59,050 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 141 transitions. Word has length 89 [2024-11-28 04:46:59,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:46:59,050 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 141 transitions. [2024-11-28 04:46:59,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 105 states have (on average 2.0095238095238095) internal successors, (211), 105 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:46:59,051 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 141 transitions. [2024-11-28 04:46:59,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-28 04:46:59,051 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:46:59,051 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:46:59,064 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2024-11-28 04:46:59,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable73 [2024-11-28 04:46:59,252 INFO L396 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:46:59,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:46:59,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1189542218, now seen corresponding path program 36 times [2024-11-28 04:46:59,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:46:59,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636032989] [2024-11-28 04:46:59,252 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:46:59,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:46:59,264 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 20 check-sat command(s) [2024-11-28 04:46:59,264 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:47:00,961 INFO L134 CoverageAnalysis]: Checked inductivity of 685 backedges. 289 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:47:00,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:47:00,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636032989] [2024-11-28 04:47:00,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636032989] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:47:00,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656706523] [2024-11-28 04:47:00,962 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:47:00,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:47:00,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:47:00,963 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:47:00,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2024-11-28 04:47:01,075 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 20 check-sat command(s) [2024-11-28 04:47:01,075 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:47:01,076 INFO L256 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-28 04:47:01,078 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:47:03,083 INFO L134 CoverageAnalysis]: Checked inductivity of 685 backedges. 324 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:47:03,083 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:47:04,907 INFO L134 CoverageAnalysis]: Checked inductivity of 685 backedges. 361 proven. 324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:47:04,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [656706523] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:47:04,907 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:47:04,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 43, 43] total 104 [2024-11-28 04:47:04,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092307965] [2024-11-28 04:47:04,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:47:04,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2024-11-28 04:47:04,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:47:04,909 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2024-11-28 04:47:04,909 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2001, Invalid=8711, Unknown=0, NotChecked=0, Total=10712 [2024-11-28 04:47:04,909 INFO L87 Difference]: Start difference. First operand 137 states and 141 transitions. Second operand has 104 states, 104 states have (on average 2.048076923076923) internal successors, (213), 104 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:47:05,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:47:05,512 INFO L93 Difference]: Finished difference Result 192 states and 197 transitions. [2024-11-28 04:47:05,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-11-28 04:47:05,512 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 2.048076923076923) internal successors, (213), 104 states have internal predecessors, (213), 0 states have call successors, (0), 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 91 [2024-11-28 04:47:05,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:47:05,513 INFO L225 Difference]: With dead ends: 192 [2024-11-28 04:47:05,513 INFO L226 Difference]: Without dead ends: 185 [2024-11-28 04:47:05,513 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 103 SyntacticMatches, 19 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7717 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=2088, Invalid=9042, Unknown=0, NotChecked=0, Total=11130 [2024-11-28 04:47:05,514 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 16 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 773 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:47:05,514 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 143 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 773 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:47:05,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2024-11-28 04:47:05,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 139. [2024-11-28 04:47:05,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 138 states have (on average 1.036231884057971) internal successors, (143), 138 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:47:05,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 143 transitions. [2024-11-28 04:47:05,563 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 143 transitions. Word has length 91 [2024-11-28 04:47:05,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:47:05,563 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 143 transitions. [2024-11-28 04:47:05,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 104 states have (on average 2.048076923076923) internal successors, (213), 104 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:47:05,563 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 143 transitions. [2024-11-28 04:47:05,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-28 04:47:05,563 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:47:05,563 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:47:05,573 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2024-11-28 04:47:05,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,70 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:47:05,764 INFO L396 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:47:05,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:47:05,764 INFO L85 PathProgramCache]: Analyzing trace with hash -681203350, now seen corresponding path program 34 times [2024-11-28 04:47:05,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:47:05,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295745097] [2024-11-28 04:47:05,764 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:47:05,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:47:05,773 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:47:05,773 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:47:07,097 INFO L134 CoverageAnalysis]: Checked inductivity of 685 backedges. 361 proven. 324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:47:07,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:47:07,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295745097] [2024-11-28 04:47:07,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295745097] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:47:07,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2089474729] [2024-11-28 04:47:07,098 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:47:07,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:47:07,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:47:07,099 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:47:07,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2024-11-28 04:47:07,200 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:47:07,200 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:47:07,201 INFO L256 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-28 04:47:07,203 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:47:09,483 INFO L134 CoverageAnalysis]: Checked inductivity of 685 backedges. 361 proven. 324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:47:09,483 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:47:11,577 INFO L134 CoverageAnalysis]: Checked inductivity of 685 backedges. 361 proven. 324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:47:11,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2089474729] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:47:11,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:47:11,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 101 [2024-11-28 04:47:11,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359654499] [2024-11-28 04:47:11,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:47:11,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2024-11-28 04:47:11,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:47:11,579 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2024-11-28 04:47:11,580 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1892, Invalid=8208, Unknown=0, NotChecked=0, Total=10100 [2024-11-28 04:47:11,580 INFO L87 Difference]: Start difference. First operand 139 states and 143 transitions. Second operand has 101 states, 101 states have (on average 2.0396039603960396) internal successors, (206), 101 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:47:12,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:47:12,240 INFO L93 Difference]: Finished difference Result 190 states and 194 transitions. [2024-11-28 04:47:12,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-28 04:47:12,240 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 2.0396039603960396) internal successors, (206), 101 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2024-11-28 04:47:12,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:47:12,241 INFO L225 Difference]: With dead ends: 190 [2024-11-28 04:47:12,241 INFO L226 Difference]: Without dead ends: 139 [2024-11-28 04:47:12,242 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 104 SyntacticMatches, 20 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6017 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1943, Invalid=8563, Unknown=0, NotChecked=0, Total=10506 [2024-11-28 04:47:12,242 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 15 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 765 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:47:12,242 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 136 Invalid, 769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 765 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 04:47:12,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-11-28 04:47:12,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 138. [2024-11-28 04:47:12,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 137 states have (on average 1.0291970802919708) internal successors, (141), 137 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:47:12,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 141 transitions. [2024-11-28 04:47:12,272 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 141 transitions. Word has length 91 [2024-11-28 04:47:12,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:47:12,272 INFO L471 AbstractCegarLoop]: Abstraction has 138 states and 141 transitions. [2024-11-28 04:47:12,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 2.0396039603960396) internal successors, (206), 101 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:47:12,272 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 141 transitions. [2024-11-28 04:47:12,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-28 04:47:12,272 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:47:12,272 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:47:12,284 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2024-11-28 04:47:12,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,71 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:47:12,473 INFO L396 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:47:12,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:47:12,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1067626982, now seen corresponding path program 37 times [2024-11-28 04:47:12,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:47:12,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027206199] [2024-11-28 04:47:12,473 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:47:12,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:47:12,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:47:13,876 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 324 proven. 398 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:47:13,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:47:13,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027206199] [2024-11-28 04:47:13,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027206199] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:47:13,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355673836] [2024-11-28 04:47:13,876 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:47:13,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:47:13,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:47:13,878 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:47:13,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2024-11-28 04:47:13,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:47:13,986 INFO L256 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-28 04:47:13,989 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:47:16,400 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 361 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:47:16,401 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:47:18,468 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 361 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:47:18,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355673836] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:47:18,468 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:47:18,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46, 46] total 111 [2024-11-28 04:47:18,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116623229] [2024-11-28 04:47:18,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:47:18,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 111 states [2024-11-28 04:47:18,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:47:18,470 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2024-11-28 04:47:18,470 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2168, Invalid=10042, Unknown=0, NotChecked=0, Total=12210 [2024-11-28 04:47:18,470 INFO L87 Difference]: Start difference. First operand 138 states and 141 transitions. Second operand has 111 states, 111 states have (on average 1.990990990990991) internal successors, (221), 111 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:47:19,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:47:19,368 INFO L93 Difference]: Finished difference Result 195 states and 201 transitions. [2024-11-28 04:47:19,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-28 04:47:19,369 INFO L78 Accepts]: Start accepts. Automaton has has 111 states, 111 states have (on average 1.990990990990991) internal successors, (221), 111 states have internal predecessors, (221), 0 states have call successors, (0), 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 93 [2024-11-28 04:47:19,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:47:19,370 INFO L225 Difference]: With dead ends: 195 [2024-11-28 04:47:19,370 INFO L226 Difference]: Without dead ends: 142 [2024-11-28 04:47:19,370 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 100 SyntacticMatches, 21 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8753 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=2207, Invalid=10449, Unknown=0, NotChecked=0, Total=12656 [2024-11-28 04:47:19,370 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 5 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 1040 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 1045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:47:19,371 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 172 Invalid, 1045 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1040 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 04:47:19,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-11-28 04:47:19,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 141. [2024-11-28 04:47:19,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 140 states have (on average 1.0357142857142858) internal successors, (145), 140 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:47:19,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 145 transitions. [2024-11-28 04:47:19,411 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 145 transitions. Word has length 93 [2024-11-28 04:47:19,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:47:19,411 INFO L471 AbstractCegarLoop]: Abstraction has 141 states and 145 transitions. [2024-11-28 04:47:19,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 111 states, 111 states have (on average 1.990990990990991) internal successors, (221), 111 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:47:19,412 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 145 transitions. [2024-11-28 04:47:19,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-28 04:47:19,412 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:47:19,412 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:47:19,423 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0 [2024-11-28 04:47:19,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2024-11-28 04:47:19,613 INFO L396 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:47:19,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:47:19,613 INFO L85 PathProgramCache]: Analyzing trace with hash 529288422, now seen corresponding path program 35 times [2024-11-28 04:47:19,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:47:19,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851579141] [2024-11-28 04:47:19,614 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:47:19,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:47:19,627 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2024-11-28 04:47:19,627 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:47:21,546 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 361 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:47:21,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:47:21,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851579141] [2024-11-28 04:47:21,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851579141] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:47:21,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300816072] [2024-11-28 04:47:21,546 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:47:21,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:47:21,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:47:21,548 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:47:21,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2024-11-28 04:47:21,656 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2024-11-28 04:47:21,656 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:47:21,657 INFO L256 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-28 04:47:21,659 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:47:23,928 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 361 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:47:23,929 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:47:25,976 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 361 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:47:25,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [300816072] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:47:25,976 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:47:25,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46, 46] total 109 [2024-11-28 04:47:25,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262148158] [2024-11-28 04:47:25,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:47:25,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 109 states [2024-11-28 04:47:25,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:47:25,978 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2024-11-28 04:47:25,978 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2154, Invalid=9618, Unknown=0, NotChecked=0, Total=11772 [2024-11-28 04:47:25,979 INFO L87 Difference]: Start difference. First operand 141 states and 145 transitions. Second operand has 109 states, 109 states have (on average 2.0) internal successors, (218), 109 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:47:26,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:47:26,554 INFO L93 Difference]: Finished difference Result 155 states and 160 transitions. [2024-11-28 04:47:26,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-28 04:47:26,554 INFO L78 Accepts]: Start accepts. Automaton has has 109 states, 109 states have (on average 2.0) internal successors, (218), 109 states have internal predecessors, (218), 0 states have call successors, (0), 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 93 [2024-11-28 04:47:26,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:47:26,556 INFO L225 Difference]: With dead ends: 155 [2024-11-28 04:47:26,556 INFO L226 Difference]: Without dead ends: 148 [2024-11-28 04:47:26,556 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 102 SyntacticMatches, 21 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8374 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=2245, Invalid=9965, Unknown=0, NotChecked=0, Total=12210 [2024-11-28 04:47:26,556 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 12 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 696 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:47:26,557 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 101 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 696 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:47:26,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2024-11-28 04:47:26,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 143. [2024-11-28 04:47:26,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.0352112676056338) internal successors, (147), 142 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:47:26,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 147 transitions. [2024-11-28 04:47:26,608 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 147 transitions. Word has length 93 [2024-11-28 04:47:26,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:47:26,608 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 147 transitions. [2024-11-28 04:47:26,608 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 109 states, 109 states have (on average 2.0) internal successors, (218), 109 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:47:26,609 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 147 transitions. [2024-11-28 04:47:26,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-28 04:47:26,609 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:47:26,609 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:47:26,620 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2024-11-28 04:47:26,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2024-11-28 04:47:26,810 INFO L396 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:47:26,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:47:26,810 INFO L85 PathProgramCache]: Analyzing trace with hash 414082658, now seen corresponding path program 38 times [2024-11-28 04:47:26,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:47:26,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430625127] [2024-11-28 04:47:26,810 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:47:26,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:47:26,826 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:47:26,826 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:47:28,594 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 324 proven. 437 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:47:28,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:47:28,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430625127] [2024-11-28 04:47:28,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430625127] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:47:28,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12808351] [2024-11-28 04:47:28,594 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:47:28,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:47:28,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:47:28,599 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:47:28,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2024-11-28 04:47:28,707 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:47:28,707 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:47:28,709 INFO L256 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-28 04:47:28,710 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:47:30,875 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 361 proven. 400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:47:30,875 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:47:32,819 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 400 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:47:32,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12808351] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:47:32,819 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:47:32,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 45, 45] total 109 [2024-11-28 04:47:32,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107694609] [2024-11-28 04:47:32,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:47:32,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 109 states [2024-11-28 04:47:32,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:47:32,821 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2024-11-28 04:47:32,821 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2195, Invalid=9577, Unknown=0, NotChecked=0, Total=11772 [2024-11-28 04:47:32,821 INFO L87 Difference]: Start difference. First operand 143 states and 147 transitions. Second operand has 109 states, 109 states have (on average 2.0458715596330275) internal successors, (223), 109 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:47:33,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:47:33,433 INFO L93 Difference]: Finished difference Result 200 states and 205 transitions. [2024-11-28 04:47:33,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-28 04:47:33,433 INFO L78 Accepts]: Start accepts. Automaton has has 109 states, 109 states have (on average 2.0458715596330275) internal successors, (223), 109 states have internal predecessors, (223), 0 states have call successors, (0), 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 95 [2024-11-28 04:47:33,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:47:33,434 INFO L225 Difference]: With dead ends: 200 [2024-11-28 04:47:33,434 INFO L226 Difference]: Without dead ends: 193 [2024-11-28 04:47:33,435 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 107 SyntacticMatches, 20 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8513 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=2286, Invalid=9924, Unknown=0, NotChecked=0, Total=12210 [2024-11-28 04:47:33,435 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 14 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 688 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:47:33,435 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 127 Invalid, 693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 688 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:47:33,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2024-11-28 04:47:33,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 145. [2024-11-28 04:47:33,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.0347222222222223) internal successors, (149), 144 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:47:33,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 149 transitions. [2024-11-28 04:47:33,481 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 149 transitions. Word has length 95 [2024-11-28 04:47:33,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:47:33,481 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 149 transitions. [2024-11-28 04:47:33,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 109 states, 109 states have (on average 2.0458715596330275) internal successors, (223), 109 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:47:33,481 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 149 transitions. [2024-11-28 04:47:33,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-28 04:47:33,482 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:47:33,482 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:47:33,493 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2024-11-28 04:47:33,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 74 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2024-11-28 04:47:33,683 INFO L396 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:47:33,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:47:33,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1352283906, now seen corresponding path program 36 times [2024-11-28 04:47:33,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:47:33,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493153053] [2024-11-28 04:47:33,683 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:47:33,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:47:33,695 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2024-11-28 04:47:33,695 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:47:35,185 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 363 proven. 398 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:47:35,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:47:35,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493153053] [2024-11-28 04:47:35,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493153053] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:47:35,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215105666] [2024-11-28 04:47:35,186 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:47:35,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:47:35,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:47:35,187 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:47:35,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2024-11-28 04:47:35,318 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2024-11-28 04:47:35,319 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:47:35,321 INFO L256 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-28 04:47:35,324 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:47:37,590 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 400 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:47:37,590 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:47:39,533 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 400 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:47:39,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215105666] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:47:39,533 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:47:39,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 45, 45] total 109 [2024-11-28 04:47:39,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636539594] [2024-11-28 04:47:39,533 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:47:39,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 109 states [2024-11-28 04:47:39,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:47:39,535 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2024-11-28 04:47:39,535 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2176, Invalid=9596, Unknown=0, NotChecked=0, Total=11772 [2024-11-28 04:47:39,535 INFO L87 Difference]: Start difference. First operand 145 states and 149 transitions. Second operand has 109 states, 109 states have (on average 2.0275229357798166) internal successors, (221), 109 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:47:40,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:47:40,210 INFO L93 Difference]: Finished difference Result 198 states and 202 transitions. [2024-11-28 04:47:40,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-28 04:47:40,211 INFO L78 Accepts]: Start accepts. Automaton has has 109 states, 109 states have (on average 2.0275229357798166) internal successors, (221), 109 states have internal predecessors, (221), 0 states have call successors, (0), 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 95 [2024-11-28 04:47:40,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:47:40,212 INFO L225 Difference]: With dead ends: 198 [2024-11-28 04:47:40,212 INFO L226 Difference]: Without dead ends: 145 [2024-11-28 04:47:40,212 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 108 SyntacticMatches, 19 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8405 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=2233, Invalid=9977, Unknown=0, NotChecked=0, Total=12210 [2024-11-28 04:47:40,213 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 13 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:47:40,213 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 138 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 707 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:47:40,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-11-28 04:47:40,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 144. [2024-11-28 04:47:40,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 1.027972027972028) internal successors, (147), 143 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:47:40,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 147 transitions. [2024-11-28 04:47:40,239 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 147 transitions. Word has length 95 [2024-11-28 04:47:40,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:47:40,239 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 147 transitions. [2024-11-28 04:47:40,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 109 states, 109 states have (on average 2.0275229357798166) internal successors, (221), 109 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:47:40,239 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 147 transitions. [2024-11-28 04:47:40,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-28 04:47:40,240 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:47:40,240 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:47:40,246 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0 [2024-11-28 04:47:40,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2024-11-28 04:47:40,440 INFO L396 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:47:40,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:47:40,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1119667970, now seen corresponding path program 39 times [2024-11-28 04:47:40,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:47:40,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665446889] [2024-11-28 04:47:40,441 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:47:40,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:47:40,454 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2024-11-28 04:47:40,455 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:47:42,224 INFO L134 CoverageAnalysis]: Checked inductivity of 800 backedges. 361 proven. 439 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:47:42,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:47:42,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665446889] [2024-11-28 04:47:42,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665446889] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:47:42,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282789145] [2024-11-28 04:47:42,225 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:47:42,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:47:42,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:47:42,226 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:47:42,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2024-11-28 04:47:42,352 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2024-11-28 04:47:42,352 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:47:42,353 INFO L256 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-28 04:47:42,355 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:47:45,013 INFO L134 CoverageAnalysis]: Checked inductivity of 800 backedges. 400 proven. 400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:47:45,013 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:47:47,194 INFO L134 CoverageAnalysis]: Checked inductivity of 800 backedges. 400 proven. 400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:47:47,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282789145] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:47:47,194 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:47:47,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 116 [2024-11-28 04:47:47,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804810871] [2024-11-28 04:47:47,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:47:47,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 116 states [2024-11-28 04:47:47,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:47:47,196 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2024-11-28 04:47:47,196 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2369, Invalid=10971, Unknown=0, NotChecked=0, Total=13340 [2024-11-28 04:47:47,196 INFO L87 Difference]: Start difference. First operand 144 states and 147 transitions. Second operand has 116 states, 116 states have (on average 1.9913793103448276) internal successors, (231), 116 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:47:47,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:47:47,901 INFO L93 Difference]: Finished difference Result 203 states and 209 transitions. [2024-11-28 04:47:47,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-28 04:47:47,901 INFO L78 Accepts]: Start accepts. Automaton has has 116 states, 116 states have (on average 1.9913793103448276) internal successors, (231), 116 states have internal predecessors, (231), 0 states have call successors, (0), 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 97 [2024-11-28 04:47:47,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:47:47,902 INFO L225 Difference]: With dead ends: 203 [2024-11-28 04:47:47,902 INFO L226 Difference]: Without dead ends: 148 [2024-11-28 04:47:47,903 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 104 SyntacticMatches, 22 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9600 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=2409, Invalid=11397, Unknown=0, NotChecked=0, Total=13806 [2024-11-28 04:47:47,903 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 8 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 681 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:47:47,903 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 99 Invalid, 691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 681 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:47:47,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2024-11-28 04:47:47,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 147. [2024-11-28 04:47:47,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 1.0342465753424657) internal successors, (151), 146 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:47:47,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 151 transitions. [2024-11-28 04:47:47,950 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 151 transitions. Word has length 97 [2024-11-28 04:47:47,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:47:47,950 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 151 transitions. [2024-11-28 04:47:47,951 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 116 states, 116 states have (on average 1.9913793103448276) internal successors, (231), 116 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:47:47,951 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 151 transitions. [2024-11-28 04:47:47,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-28 04:47:47,951 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:47:47,951 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:47:47,962 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2024-11-28 04:47:48,152 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,76 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:47:48,152 INFO L396 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:47:48,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:47:48,153 INFO L85 PathProgramCache]: Analyzing trace with hash 361413758, now seen corresponding path program 37 times [2024-11-28 04:47:48,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:47:48,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829431981] [2024-11-28 04:47:48,153 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:47:48,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:47:48,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:47:49,979 INFO L134 CoverageAnalysis]: Checked inductivity of 800 backedges. 361 proven. 439 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:47:49,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:47:49,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829431981] [2024-11-28 04:47:49,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829431981] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:47:49,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250954777] [2024-11-28 04:47:49,980 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:47:49,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:47:49,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:47:49,981 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:47:49,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2024-11-28 04:47:50,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:47:50,089 INFO L256 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-28 04:47:50,092 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:47:52,397 INFO L134 CoverageAnalysis]: Checked inductivity of 800 backedges. 400 proven. 400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:47:52,398 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:47:54,479 INFO L134 CoverageAnalysis]: Checked inductivity of 800 backedges. 400 proven. 400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:47:54,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250954777] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:47:54,480 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:47:54,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 115 [2024-11-28 04:47:54,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274540757] [2024-11-28 04:47:54,480 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:47:54,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 115 states [2024-11-28 04:47:54,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:47:54,481 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2024-11-28 04:47:54,481 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2380, Invalid=10730, Unknown=0, NotChecked=0, Total=13110 [2024-11-28 04:47:54,482 INFO L87 Difference]: Start difference. First operand 147 states and 151 transitions. Second operand has 115 states, 115 states have (on average 2.008695652173913) internal successors, (231), 115 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:47:55,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:47:55,203 INFO L93 Difference]: Finished difference Result 161 states and 166 transitions. [2024-11-28 04:47:55,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-28 04:47:55,204 INFO L78 Accepts]: Start accepts. Automaton has has 115 states, 115 states have (on average 2.008695652173913) internal successors, (231), 115 states have internal predecessors, (231), 0 states have call successors, (0), 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 97 [2024-11-28 04:47:55,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:47:55,204 INFO L225 Difference]: With dead ends: 161 [2024-11-28 04:47:55,204 INFO L226 Difference]: Without dead ends: 154 [2024-11-28 04:47:55,205 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 106 SyntacticMatches, 21 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9391 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=2475, Invalid=11097, Unknown=0, NotChecked=0, Total=13572 [2024-11-28 04:47:55,205 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 10 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 921 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:47:55,205 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 134 Invalid, 928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 921 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 04:47:55,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2024-11-28 04:47:55,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 149. [2024-11-28 04:47:55,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 1.0337837837837838) internal successors, (153), 148 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:47:55,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 153 transitions. [2024-11-28 04:47:55,250 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 153 transitions. Word has length 97 [2024-11-28 04:47:55,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:47:55,250 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 153 transitions. [2024-11-28 04:47:55,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 115 states, 115 states have (on average 2.008695652173913) internal successors, (231), 115 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:47:55,250 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 153 transitions. [2024-11-28 04:47:55,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-28 04:47:55,251 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:47:55,251 INFO L218 NwaCegarLoop]: trace histogram [21, 21, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:47:55,261 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2024-11-28 04:47:55,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable81 [2024-11-28 04:47:55,452 INFO L396 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:47:55,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:47:55,452 INFO L85 PathProgramCache]: Analyzing trace with hash 136859514, now seen corresponding path program 40 times [2024-11-28 04:47:55,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:47:55,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970975466] [2024-11-28 04:47:55,452 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:47:55,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:47:55,464 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:47:55,464 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:47:57,057 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 400 proven. 441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:47:57,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:47:57,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970975466] [2024-11-28 04:47:57,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970975466] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:47:57,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131582793] [2024-11-28 04:47:57,057 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:47:57,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:47:57,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:47:57,059 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:47:57,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2024-11-28 04:47:57,166 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:47:57,167 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:47:57,168 INFO L256 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-28 04:47:57,170 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:48:00,148 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 400 proven. 441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:48:00,148 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:48:02,378 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 441 proven. 400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:48:02,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131582793] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:48:02,378 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:48:02,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 111 [2024-11-28 04:48:02,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124249281] [2024-11-28 04:48:02,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:48:02,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 111 states [2024-11-28 04:48:02,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:48:02,379 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2024-11-28 04:48:02,380 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2279, Invalid=9931, Unknown=0, NotChecked=0, Total=12210 [2024-11-28 04:48:02,380 INFO L87 Difference]: Start difference. First operand 149 states and 153 transitions. Second operand has 111 states, 111 states have (on average 2.036036036036036) internal successors, (226), 111 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:48:03,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:48:03,037 INFO L93 Difference]: Finished difference Result 208 states and 213 transitions. [2024-11-28 04:48:03,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-11-28 04:48:03,038 INFO L78 Accepts]: Start accepts. Automaton has has 111 states, 111 states have (on average 2.036036036036036) internal successors, (226), 111 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2024-11-28 04:48:03,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:48:03,039 INFO L225 Difference]: With dead ends: 208 [2024-11-28 04:48:03,039 INFO L226 Difference]: Without dead ends: 201 [2024-11-28 04:48:03,039 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 111 SyntacticMatches, 23 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7386 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=2372, Invalid=10284, Unknown=0, NotChecked=0, Total=12656 [2024-11-28 04:48:03,040 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 17 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:48:03,040 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 124 Invalid, 753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 04:48:03,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2024-11-28 04:48:03,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 151. [2024-11-28 04:48:03,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 150 states have (on average 1.0333333333333334) internal successors, (155), 150 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:48:03,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 155 transitions. [2024-11-28 04:48:03,068 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 155 transitions. Word has length 99 [2024-11-28 04:48:03,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:48:03,068 INFO L471 AbstractCegarLoop]: Abstraction has 151 states and 155 transitions. [2024-11-28 04:48:03,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 111 states, 111 states have (on average 2.036036036036036) internal successors, (226), 111 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:48:03,068 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 155 transitions. [2024-11-28 04:48:03,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-28 04:48:03,069 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:48:03,069 INFO L218 NwaCegarLoop]: trace histogram [21, 21, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:48:03,082 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Ended with exit code 0 [2024-11-28 04:48:03,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable82 [2024-11-28 04:48:03,270 INFO L396 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:48:03,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:48:03,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1061478246, now seen corresponding path program 38 times [2024-11-28 04:48:03,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:48:03,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345252786] [2024-11-28 04:48:03,270 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:48:03,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:48:03,280 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:48:03,280 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:48:04,737 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 402 proven. 439 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:48:04,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:48:04,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345252786] [2024-11-28 04:48:04,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345252786] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:48:04,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312574427] [2024-11-28 04:48:04,738 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:48:04,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:48:04,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:48:04,740 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:48:04,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2024-11-28 04:48:04,849 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:48:04,849 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:48:04,850 INFO L256 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-28 04:48:04,852 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:48:07,312 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 441 proven. 400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:48:07,312 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:48:09,435 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 441 proven. 400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:48:09,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [312574427] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:48:09,436 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:48:09,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 47, 47] total 114 [2024-11-28 04:48:09,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966666281] [2024-11-28 04:48:09,436 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:48:09,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 114 states [2024-11-28 04:48:09,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:48:09,437 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2024-11-28 04:48:09,438 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2378, Invalid=10504, Unknown=0, NotChecked=0, Total=12882 [2024-11-28 04:48:09,438 INFO L87 Difference]: Start difference. First operand 151 states and 155 transitions. Second operand has 114 states, 114 states have (on average 2.026315789473684) internal successors, (231), 114 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:48:10,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:48:10,316 INFO L93 Difference]: Finished difference Result 206 states and 210 transitions. [2024-11-28 04:48:10,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-28 04:48:10,316 INFO L78 Accepts]: Start accepts. Automaton has has 114 states, 114 states have (on average 2.026315789473684) internal successors, (231), 114 states have internal predecessors, (231), 0 states have call successors, (0), 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 99 [2024-11-28 04:48:10,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:48:10,317 INFO L225 Difference]: With dead ends: 206 [2024-11-28 04:48:10,317 INFO L226 Difference]: Without dead ends: 151 [2024-11-28 04:48:10,318 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 112 SyntacticMatches, 20 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9235 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=2437, Invalid=10903, Unknown=0, NotChecked=0, Total=13340 [2024-11-28 04:48:10,318 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 14 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 948 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:48:10,318 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 141 Invalid, 952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 948 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 04:48:10,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2024-11-28 04:48:10,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 150. [2024-11-28 04:48:10,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 1.0268456375838926) internal successors, (153), 149 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:48:10,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 153 transitions. [2024-11-28 04:48:10,373 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 153 transitions. Word has length 99 [2024-11-28 04:48:10,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:48:10,373 INFO L471 AbstractCegarLoop]: Abstraction has 150 states and 153 transitions. [2024-11-28 04:48:10,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 114 states, 114 states have (on average 2.026315789473684) internal successors, (231), 114 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:48:10,374 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 153 transitions. [2024-11-28 04:48:10,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-28 04:48:10,374 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:48:10,375 INFO L218 NwaCegarLoop]: trace histogram [21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:48:10,388 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Ended with exit code 0 [2024-11-28 04:48:10,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,79 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:48:10,575 INFO L396 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:48:10,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:48:10,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1243137002, now seen corresponding path program 41 times [2024-11-28 04:48:10,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:48:10,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861597211] [2024-11-28 04:48:10,576 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:48:10,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:48:10,589 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2024-11-28 04:48:10,589 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:48:12,837 INFO L134 CoverageAnalysis]: Checked inductivity of 882 backedges. 441 proven. 441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:48:12,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:48:12,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861597211] [2024-11-28 04:48:12,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861597211] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:48:12,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282710995] [2024-11-28 04:48:12,837 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:48:12,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:48:12,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:48:12,839 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:48:12,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2024-11-28 04:48:12,984 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2024-11-28 04:48:12,984 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:48:12,986 INFO L256 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-28 04:48:12,988 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:48:16,030 INFO L134 CoverageAnalysis]: Checked inductivity of 882 backedges. 441 proven. 441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:48:16,030 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:48:18,967 INFO L134 CoverageAnalysis]: Checked inductivity of 882 backedges. 441 proven. 441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:48:18,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [282710995] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:48:18,967 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:48:18,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50, 50] total 119 [2024-11-28 04:48:18,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063960145] [2024-11-28 04:48:18,967 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:48:18,968 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 119 states [2024-11-28 04:48:18,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:48:18,969 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2024-11-28 04:48:18,970 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2504, Invalid=11538, Unknown=0, NotChecked=0, Total=14042 [2024-11-28 04:48:18,970 INFO L87 Difference]: Start difference. First operand 150 states and 153 transitions. Second operand has 119 states, 119 states have (on average 1.9915966386554622) internal successors, (237), 119 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:48:19,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:48:19,805 INFO L93 Difference]: Finished difference Result 211 states and 217 transitions. [2024-11-28 04:48:19,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-11-28 04:48:19,806 INFO L78 Accepts]: Start accepts. Automaton has has 119 states, 119 states have (on average 1.9915966386554622) internal successors, (237), 119 states have internal predecessors, (237), 0 states have call successors, (0), 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 [2024-11-28 04:48:19,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:48:19,806 INFO L225 Difference]: With dead ends: 211 [2024-11-28 04:48:19,806 INFO L226 Difference]: Without dead ends: 154 [2024-11-28 04:48:19,807 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 108 SyntacticMatches, 25 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8503 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=2533, Invalid=11747, Unknown=0, NotChecked=0, Total=14280 [2024-11-28 04:48:19,807 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 9 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 924 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:48:19,807 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 126 Invalid, 930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 924 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 04:48:19,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2024-11-28 04:48:19,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 153. [2024-11-28 04:48:19,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 152 states have (on average 1.0328947368421053) internal successors, (157), 152 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:48:19,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 157 transitions. [2024-11-28 04:48:19,851 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 157 transitions. Word has length 101 [2024-11-28 04:48:19,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:48:19,851 INFO L471 AbstractCegarLoop]: Abstraction has 153 states and 157 transitions. [2024-11-28 04:48:19,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 119 states, 119 states have (on average 1.9915966386554622) internal successors, (237), 119 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:48:19,851 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 157 transitions. [2024-11-28 04:48:19,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-28 04:48:19,852 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:48:19,852 INFO L218 NwaCegarLoop]: trace histogram [21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:48:19,860 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Ended with exit code 0 [2024-11-28 04:48:20,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,80 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:48:20,053 INFO L396 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:48:20,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:48:20,053 INFO L85 PathProgramCache]: Analyzing trace with hash -424376298, now seen corresponding path program 39 times [2024-11-28 04:48:20,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:48:20,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714811850] [2024-11-28 04:48:20,053 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:48:20,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:48:20,066 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2024-11-28 04:48:20,066 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:48:22,056 INFO L134 CoverageAnalysis]: Checked inductivity of 882 backedges. 400 proven. 482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:48:22,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:48:22,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714811850] [2024-11-28 04:48:22,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714811850] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:48:22,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47022838] [2024-11-28 04:48:22,057 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:48:22,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:48:22,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:48:22,058 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:48:22,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2024-11-28 04:48:22,188 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2024-11-28 04:48:22,188 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:48:22,190 INFO L256 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-28 04:48:22,192 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:48:24,738 INFO L134 CoverageAnalysis]: Checked inductivity of 882 backedges. 441 proven. 441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:48:24,738 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:48:27,035 INFO L134 CoverageAnalysis]: Checked inductivity of 882 backedges. 441 proven. 441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:48:27,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47022838] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:48:27,035 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:48:27,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50, 50] total 120 [2024-11-28 04:48:27,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133367228] [2024-11-28 04:48:27,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:48:27,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 120 states [2024-11-28 04:48:27,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:48:27,037 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2024-11-28 04:48:27,038 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2591, Invalid=11689, Unknown=0, NotChecked=0, Total=14280 [2024-11-28 04:48:27,039 INFO L87 Difference]: Start difference. First operand 153 states and 157 transitions. Second operand has 120 states, 120 states have (on average 2.0083333333333333) internal successors, (241), 120 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:48:27,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:48:27,698 INFO L93 Difference]: Finished difference Result 167 states and 172 transitions. [2024-11-28 04:48:27,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-11-28 04:48:27,699 INFO L78 Accepts]: Start accepts. Automaton has has 120 states, 120 states have (on average 2.0083333333333333) internal successors, (241), 120 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2024-11-28 04:48:27,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:48:27,700 INFO L225 Difference]: With dead ends: 167 [2024-11-28 04:48:27,700 INFO L226 Difference]: Without dead ends: 160 [2024-11-28 04:48:27,701 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 110 SyntacticMatches, 22 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10267 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=2690, Invalid=12072, Unknown=0, NotChecked=0, Total=14762 [2024-11-28 04:48:27,701 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 10 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 799 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:48:27,702 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 99 Invalid, 803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 799 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 04:48:27,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-11-28 04:48:27,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 155. [2024-11-28 04:48:27,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 154 states have (on average 1.0324675324675325) internal successors, (159), 154 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) [2024-11-28 04:48:27,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 159 transitions. [2024-11-28 04:48:27,739 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 159 transitions. Word has length 101 [2024-11-28 04:48:27,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:48:27,739 INFO L471 AbstractCegarLoop]: Abstraction has 155 states and 159 transitions. [2024-11-28 04:48:27,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 120 states, 120 states have (on average 2.0083333333333333) internal successors, (241), 120 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:48:27,740 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 159 transitions. [2024-11-28 04:48:27,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-28 04:48:27,740 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:48:27,740 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:48:27,754 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Ended with exit code 0 [2024-11-28 04:48:27,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,81 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:48:27,941 INFO L396 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:48:27,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:48:27,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1126478994, now seen corresponding path program 42 times [2024-11-28 04:48:27,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:48:27,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086772782] [2024-11-28 04:48:27,941 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:48:27,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:48:27,958 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 23 check-sat command(s) [2024-11-28 04:48:27,958 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:48:29,913 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 400 proven. 525 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:48:29,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:48:29,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086772782] [2024-11-28 04:48:29,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086772782] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:48:29,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422889802] [2024-11-28 04:48:29,913 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:48:29,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:48:29,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:48:29,915 INFO L229 MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:48:29,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2024-11-28 04:48:30,047 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 23 check-sat command(s) [2024-11-28 04:48:30,047 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:48:30,049 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-28 04:48:30,051 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:48:32,714 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 441 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:48:32,715 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:48:35,054 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 484 proven. 441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:48:35,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422889802] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:48:35,054 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:48:35,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 49, 49] total 119 [2024-11-28 04:48:35,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019048095] [2024-11-28 04:48:35,054 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:48:35,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 119 states [2024-11-28 04:48:35,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:48:35,056 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2024-11-28 04:48:35,057 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2610, Invalid=11432, Unknown=0, NotChecked=0, Total=14042 [2024-11-28 04:48:35,057 INFO L87 Difference]: Start difference. First operand 155 states and 159 transitions. Second operand has 119 states, 119 states have (on average 2.042016806722689) internal successors, (243), 119 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:48:35,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:48:35,916 INFO L93 Difference]: Finished difference Result 216 states and 221 transitions. [2024-11-28 04:48:35,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-28 04:48:35,916 INFO L78 Accepts]: Start accepts. Automaton has has 119 states, 119 states have (on average 2.042016806722689) internal successors, (243), 119 states have internal predecessors, (243), 0 states have call successors, (0), 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 [2024-11-28 04:48:35,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:48:35,917 INFO L225 Difference]: With dead ends: 216 [2024-11-28 04:48:35,917 INFO L226 Difference]: Without dead ends: 209 [2024-11-28 04:48:35,918 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 115 SyntacticMatches, 22 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10222 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=2709, Invalid=11811, Unknown=0, NotChecked=0, Total=14520 [2024-11-28 04:48:35,918 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 14 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 765 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:48:35,919 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 126 Invalid, 771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 765 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 04:48:35,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2024-11-28 04:48:35,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 157. [2024-11-28 04:48:35,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 156 states have (on average 1.0320512820512822) internal successors, (161), 156 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:48:35,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 161 transitions. [2024-11-28 04:48:35,975 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 161 transitions. Word has length 103 [2024-11-28 04:48:35,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:48:35,975 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 161 transitions. [2024-11-28 04:48:35,975 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 119 states, 119 states have (on average 2.042016806722689) internal successors, (243), 119 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:48:35,975 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 161 transitions. [2024-11-28 04:48:35,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-28 04:48:35,976 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:48:35,976 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:48:35,987 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Ended with exit code 0 [2024-11-28 04:48:36,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,82 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:48:36,177 INFO L396 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:48:36,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:48:36,178 INFO L85 PathProgramCache]: Analyzing trace with hash -291477966, now seen corresponding path program 40 times [2024-11-28 04:48:36,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:48:36,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920716825] [2024-11-28 04:48:36,179 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:48:36,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:48:36,194 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:48:36,195 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:48:37,839 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 484 proven. 441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:48:37,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:48:37,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920716825] [2024-11-28 04:48:37,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920716825] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:48:37,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581174347] [2024-11-28 04:48:37,840 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:48:37,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:48:37,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:48:37,842 INFO L229 MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:48:37,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2024-11-28 04:48:37,959 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:48:37,959 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:48:37,960 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-28 04:48:37,962 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:48:40,639 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 484 proven. 441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:48:40,639 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:48:42,939 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 484 proven. 441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:48:42,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581174347] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:48:42,939 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:48:42,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 49, 49] total 118 [2024-11-28 04:48:42,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615414245] [2024-11-28 04:48:42,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:48:42,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 118 states [2024-11-28 04:48:42,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:48:42,941 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2024-11-28 04:48:42,942 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2584, Invalid=11222, Unknown=0, NotChecked=0, Total=13806 [2024-11-28 04:48:42,942 INFO L87 Difference]: Start difference. First operand 157 states and 161 transitions. Second operand has 118 states, 118 states have (on average 2.016949152542373) internal successors, (238), 118 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:48:43,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:48:43,728 INFO L93 Difference]: Finished difference Result 214 states and 218 transitions. [2024-11-28 04:48:43,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-11-28 04:48:43,728 INFO L78 Accepts]: Start accepts. Automaton has has 118 states, 118 states have (on average 2.016949152542373) internal successors, (238), 118 states have internal predecessors, (238), 0 states have call successors, (0), 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 [2024-11-28 04:48:43,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:48:43,729 INFO L225 Difference]: With dead ends: 214 [2024-11-28 04:48:43,729 INFO L226 Difference]: Without dead ends: 157 [2024-11-28 04:48:43,729 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 116 SyntacticMatches, 22 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9934 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=2645, Invalid=11635, Unknown=0, NotChecked=0, Total=14280 [2024-11-28 04:48:43,730 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 13 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 792 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:48:43,730 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 151 Invalid, 796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 792 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 04:48:43,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2024-11-28 04:48:43,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 156. [2024-11-28 04:48:43,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 155 states have (on average 1.0258064516129033) internal successors, (159), 155 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) [2024-11-28 04:48:43,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 159 transitions. [2024-11-28 04:48:43,760 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 159 transitions. Word has length 103 [2024-11-28 04:48:43,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:48:43,760 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 159 transitions. [2024-11-28 04:48:43,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 118 states, 118 states have (on average 2.016949152542373) internal successors, (238), 118 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:48:43,761 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 159 transitions. [2024-11-28 04:48:43,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-28 04:48:43,761 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:48:43,761 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:48:43,770 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Ended with exit code 0 [2024-11-28 04:48:43,962 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,83 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:48:43,962 INFO L396 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:48:43,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:48:43,962 INFO L85 PathProgramCache]: Analyzing trace with hash 593410862, now seen corresponding path program 43 times [2024-11-28 04:48:43,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:48:43,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441324087] [2024-11-28 04:48:43,962 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:48:43,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:48:43,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:48:45,813 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 441 proven. 527 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:48:45,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:48:45,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441324087] [2024-11-28 04:48:45,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441324087] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:48:45,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588802967] [2024-11-28 04:48:45,814 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:48:45,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:48:45,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:48:45,816 INFO L229 MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:48:45,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2024-11-28 04:48:45,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:48:45,940 INFO L256 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-28 04:48:45,942 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:48:48,965 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 484 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:48:48,965 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:48:51,594 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 484 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:48:51,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588802967] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:48:51,594 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:48:51,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52, 52] total 126 [2024-11-28 04:48:51,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270043365] [2024-11-28 04:48:51,594 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:48:51,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 126 states [2024-11-28 04:48:51,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:48:51,596 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2024-11-28 04:48:51,597 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2798, Invalid=12952, Unknown=0, NotChecked=0, Total=15750 [2024-11-28 04:48:51,597 INFO L87 Difference]: Start difference. First operand 156 states and 159 transitions. Second operand has 126 states, 126 states have (on average 1.992063492063492) internal successors, (251), 126 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:48:52,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:48:52,523 INFO L93 Difference]: Finished difference Result 219 states and 225 transitions. [2024-11-28 04:48:52,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-11-28 04:48:52,523 INFO L78 Accepts]: Start accepts. Automaton has has 126 states, 126 states have (on average 1.992063492063492) internal successors, (251), 126 states have internal predecessors, (251), 0 states have call successors, (0), 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 105 [2024-11-28 04:48:52,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:48:52,524 INFO L225 Difference]: With dead ends: 219 [2024-11-28 04:48:52,524 INFO L226 Difference]: Without dead ends: 160 [2024-11-28 04:48:52,525 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 113 SyntacticMatches, 23 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11340 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=2840, Invalid=13416, Unknown=0, NotChecked=0, Total=16256 [2024-11-28 04:48:52,525 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 12 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 939 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:48:52,525 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 130 Invalid, 944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 939 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 04:48:52,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-11-28 04:48:52,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 159. [2024-11-28 04:48:52,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 158 states have (on average 1.0316455696202531) internal successors, (163), 158 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:48:52,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 163 transitions. [2024-11-28 04:48:52,572 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 163 transitions. Word has length 105 [2024-11-28 04:48:52,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:48:52,572 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 163 transitions. [2024-11-28 04:48:52,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 126 states, 126 states have (on average 1.992063492063492) internal successors, (251), 126 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:48:52,572 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 163 transitions. [2024-11-28 04:48:52,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-28 04:48:52,573 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:48:52,573 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:48:52,584 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Ended with exit code 0 [2024-11-28 04:48:52,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,84 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:48:52,774 INFO L396 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:48:52,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:48:52,774 INFO L85 PathProgramCache]: Analyzing trace with hash 576827310, now seen corresponding path program 41 times [2024-11-28 04:48:52,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:48:52,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491093113] [2024-11-28 04:48:52,774 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:48:52,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:48:52,793 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2024-11-28 04:48:52,793 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:48:54,767 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 484 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:48:54,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:48:54,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491093113] [2024-11-28 04:48:54,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491093113] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:48:54,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923309111] [2024-11-28 04:48:54,768 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:48:54,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:48:54,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:48:54,772 INFO L229 MonitoredProcess]: Starting monitored process 85 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:48:54,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2024-11-28 04:48:54,902 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2024-11-28 04:48:54,902 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:48:54,904 INFO L256 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-28 04:48:54,907 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:48:58,725 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 484 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:48:58,725 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:49:01,511 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 484 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:49:01,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923309111] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:49:01,511 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:49:01,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52, 52] total 123 [2024-11-28 04:49:01,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575991540] [2024-11-28 04:49:01,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:49:01,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 123 states [2024-11-28 04:49:01,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:49:01,512 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2024-11-28 04:49:01,513 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2711, Invalid=12295, Unknown=0, NotChecked=0, Total=15006 [2024-11-28 04:49:01,513 INFO L87 Difference]: Start difference. First operand 159 states and 163 transitions. Second operand has 123 states, 123 states have (on average 2.008130081300813) internal successors, (247), 123 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:49:02,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:49:02,203 INFO L93 Difference]: Finished difference Result 173 states and 178 transitions. [2024-11-28 04:49:02,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-11-28 04:49:02,203 INFO L78 Accepts]: Start accepts. Automaton has has 123 states, 123 states have (on average 2.008130081300813) internal successors, (247), 123 states have internal predecessors, (247), 0 states have call successors, (0), 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 105 [2024-11-28 04:49:02,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:49:02,204 INFO L225 Difference]: With dead ends: 173 [2024-11-28 04:49:02,204 INFO L226 Difference]: Without dead ends: 166 [2024-11-28 04:49:02,205 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 114 SyntacticMatches, 25 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9105 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=2813, Invalid=12687, Unknown=0, NotChecked=0, Total=15500 [2024-11-28 04:49:02,205 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 11 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:49:02,205 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 97 Invalid, 749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 744 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 04:49:02,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2024-11-28 04:49:02,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 161. [2024-11-28 04:49:02,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 160 states have (on average 1.03125) internal successors, (165), 160 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:49:02,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 165 transitions. [2024-11-28 04:49:02,242 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 165 transitions. Word has length 105 [2024-11-28 04:49:02,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:49:02,243 INFO L471 AbstractCegarLoop]: Abstraction has 161 states and 165 transitions. [2024-11-28 04:49:02,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 123 states, 123 states have (on average 2.008130081300813) internal successors, (247), 123 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:49:02,243 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 165 transitions. [2024-11-28 04:49:02,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-28 04:49:02,243 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:49:02,244 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:49:02,254 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Ended with exit code 0 [2024-11-28 04:49:02,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89,85 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:49:02,444 INFO L396 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:49:02,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:49:02,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1811125674, now seen corresponding path program 44 times [2024-11-28 04:49:02,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:49:02,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485257448] [2024-11-28 04:49:02,445 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:49:02,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:49:02,456 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:49:02,456 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:49:04,638 INFO L134 CoverageAnalysis]: Checked inductivity of 1013 backedges. 441 proven. 572 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:49:04,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:49:04,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485257448] [2024-11-28 04:49:04,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485257448] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:49:04,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545592114] [2024-11-28 04:49:04,638 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:49:04,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:49:04,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:49:04,640 INFO L229 MonitoredProcess]: Starting monitored process 86 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:49:04,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2024-11-28 04:49:04,766 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:49:04,766 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:49:04,768 INFO L256 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-28 04:49:04,771 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:49:07,519 INFO L134 CoverageAnalysis]: Checked inductivity of 1013 backedges. 484 proven. 529 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:49:07,520 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:49:10,099 INFO L134 CoverageAnalysis]: Checked inductivity of 1013 backedges. 529 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:49:10,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545592114] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:49:10,099 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:49:10,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 51, 51] total 124 [2024-11-28 04:49:10,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791062424] [2024-11-28 04:49:10,099 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:49:10,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 124 states [2024-11-28 04:49:10,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:49:10,101 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2024-11-28 04:49:10,101 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2831, Invalid=12421, Unknown=0, NotChecked=0, Total=15252 [2024-11-28 04:49:10,102 INFO L87 Difference]: Start difference. First operand 161 states and 165 transitions. Second operand has 124 states, 124 states have (on average 2.0403225806451615) internal successors, (253), 124 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:49:10,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:49:10,871 INFO L93 Difference]: Finished difference Result 224 states and 229 transitions. [2024-11-28 04:49:10,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-11-28 04:49:10,871 INFO L78 Accepts]: Start accepts. Automaton has has 124 states, 124 states have (on average 2.0403225806451615) internal successors, (253), 124 states have internal predecessors, (253), 0 states have call successors, (0), 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 107 [2024-11-28 04:49:10,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:49:10,872 INFO L225 Difference]: With dead ends: 224 [2024-11-28 04:49:10,872 INFO L226 Difference]: Without dead ends: 217 [2024-11-28 04:49:10,873 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 119 SyntacticMatches, 23 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11135 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=2934, Invalid=12816, Unknown=0, NotChecked=0, Total=15750 [2024-11-28 04:49:10,873 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 17 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 798 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 798 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:49:10,873 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 118 Invalid, 805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 798 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 04:49:10,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2024-11-28 04:49:10,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 163. [2024-11-28 04:49:10,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.0308641975308641) internal successors, (167), 162 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:49:10,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 167 transitions. [2024-11-28 04:49:10,906 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 167 transitions. Word has length 107 [2024-11-28 04:49:10,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:49:10,906 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 167 transitions. [2024-11-28 04:49:10,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 124 states, 124 states have (on average 2.0403225806451615) internal successors, (253), 124 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:49:10,906 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 167 transitions. [2024-11-28 04:49:10,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-28 04:49:10,906 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:49:10,906 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:49:10,917 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Ended with exit code 0 [2024-11-28 04:49:11,107 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,86 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:49:11,107 INFO L396 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:49:11,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:49:11,107 INFO L85 PathProgramCache]: Analyzing trace with hash -207484982, now seen corresponding path program 42 times [2024-11-28 04:49:11,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:49:11,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321703141] [2024-11-28 04:49:11,107 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:49:11,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:49:11,124 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 24 check-sat command(s) [2024-11-28 04:49:11,124 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:49:12,864 INFO L134 CoverageAnalysis]: Checked inductivity of 1013 backedges. 486 proven. 527 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:49:12,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:49:12,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321703141] [2024-11-28 04:49:12,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321703141] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:49:12,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094124276] [2024-11-28 04:49:12,864 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:49:12,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:49:12,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:49:12,866 INFO L229 MonitoredProcess]: Starting monitored process 87 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:49:12,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2024-11-28 04:49:13,007 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 24 check-sat command(s) [2024-11-28 04:49:13,007 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:49:13,009 INFO L256 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-28 04:49:13,011 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:49:15,956 INFO L134 CoverageAnalysis]: Checked inductivity of 1013 backedges. 529 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:49:15,956 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:49:18,452 INFO L134 CoverageAnalysis]: Checked inductivity of 1013 backedges. 529 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:49:18,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094124276] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:49:18,452 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:49:18,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 51, 51] total 124 [2024-11-28 04:49:18,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783494377] [2024-11-28 04:49:18,452 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:49:18,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 124 states [2024-11-28 04:49:18,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:49:18,454 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2024-11-28 04:49:18,455 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2809, Invalid=12443, Unknown=0, NotChecked=0, Total=15252 [2024-11-28 04:49:18,455 INFO L87 Difference]: Start difference. First operand 163 states and 167 transitions. Second operand has 124 states, 124 states have (on average 2.024193548387097) internal successors, (251), 124 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:49:19,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:49:19,427 INFO L93 Difference]: Finished difference Result 222 states and 226 transitions. [2024-11-28 04:49:19,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-11-28 04:49:19,427 INFO L78 Accepts]: Start accepts. Automaton has has 124 states, 124 states have (on average 2.024193548387097) internal successors, (251), 124 states have internal predecessors, (251), 0 states have call successors, (0), 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 107 [2024-11-28 04:49:19,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:49:19,428 INFO L225 Difference]: With dead ends: 222 [2024-11-28 04:49:19,428 INFO L226 Difference]: Without dead ends: 163 [2024-11-28 04:49:19,429 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 120 SyntacticMatches, 22 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11012 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=2872, Invalid=12878, Unknown=0, NotChecked=0, Total=15750 [2024-11-28 04:49:19,430 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 13 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 1074 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 1077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 04:49:19,430 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 172 Invalid, 1077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1074 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 04:49:19,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2024-11-28 04:49:19,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 162. [2024-11-28 04:49:19,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 161 states have (on average 1.0248447204968945) internal successors, (165), 161 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:49:19,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 165 transitions. [2024-11-28 04:49:19,493 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 165 transitions. Word has length 107 [2024-11-28 04:49:19,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:49:19,493 INFO L471 AbstractCegarLoop]: Abstraction has 162 states and 165 transitions. [2024-11-28 04:49:19,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 124 states, 124 states have (on average 2.024193548387097) internal successors, (251), 124 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:49:19,493 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 165 transitions. [2024-11-28 04:49:19,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-28 04:49:19,494 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:49:19,494 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:49:19,509 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Ended with exit code 0 [2024-11-28 04:49:19,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,87 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:49:19,695 INFO L396 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:49:19,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:49:19,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1408874054, now seen corresponding path program 45 times [2024-11-28 04:49:19,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:49:19,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690503226] [2024-11-28 04:49:19,695 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:49:19,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:49:19,713 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2024-11-28 04:49:19,713 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:49:21,669 INFO L134 CoverageAnalysis]: Checked inductivity of 1058 backedges. 484 proven. 574 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:49:21,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:49:21,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690503226] [2024-11-28 04:49:21,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690503226] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:49:21,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096202329] [2024-11-28 04:49:21,670 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:49:21,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:49:21,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:49:21,671 INFO L229 MonitoredProcess]: Starting monitored process 88 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:49:21,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2024-11-28 04:49:21,817 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2024-11-28 04:49:21,817 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:49:21,819 INFO L256 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-28 04:49:21,821 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:49:25,203 INFO L134 CoverageAnalysis]: Checked inductivity of 1058 backedges. 529 proven. 529 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:49:25,203 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:49:28,072 INFO L134 CoverageAnalysis]: Checked inductivity of 1058 backedges. 529 proven. 529 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:49:28,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096202329] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:49:28,073 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:49:28,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54, 54] total 131 [2024-11-28 04:49:28,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323383012] [2024-11-28 04:49:28,073 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:49:28,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 131 states [2024-11-28 04:49:28,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:49:28,074 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2024-11-28 04:49:28,075 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3026, Invalid=14004, Unknown=0, NotChecked=0, Total=17030 [2024-11-28 04:49:28,075 INFO L87 Difference]: Start difference. First operand 162 states and 165 transitions. Second operand has 131 states, 131 states have (on average 1.9923664122137406) internal successors, (261), 131 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:49:29,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:49:29,479 INFO L93 Difference]: Finished difference Result 227 states and 233 transitions. [2024-11-28 04:49:29,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-11-28 04:49:29,480 INFO L78 Accepts]: Start accepts. Automaton has has 131 states, 131 states have (on average 1.9923664122137406) internal successors, (261), 131 states have internal predecessors, (261), 0 states have call successors, (0), 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 109 [2024-11-28 04:49:29,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:49:29,481 INFO L225 Difference]: With dead ends: 227 [2024-11-28 04:49:29,481 INFO L226 Difference]: Without dead ends: 166 [2024-11-28 04:49:29,481 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 116 SyntacticMatches, 25 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12375 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=3069, Invalid=14487, Unknown=0, NotChecked=0, Total=17556 [2024-11-28 04:49:29,482 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 7 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 1297 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 1303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 04:49:29,482 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 160 Invalid, 1303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1297 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 04:49:29,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2024-11-28 04:49:29,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 165. [2024-11-28 04:49:29,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 164 states have (on average 1.0304878048780488) internal successors, (169), 164 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:49:29,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 169 transitions. [2024-11-28 04:49:29,538 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 169 transitions. Word has length 109 [2024-11-28 04:49:29,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:49:29,538 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 169 transitions. [2024-11-28 04:49:29,539 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 131 states, 131 states have (on average 1.9923664122137406) internal successors, (261), 131 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:49:29,539 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 169 transitions. [2024-11-28 04:49:29,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-28 04:49:29,539 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:49:29,539 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:49:29,551 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Ended with exit code 0 [2024-11-28 04:49:29,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,88 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:49:29,740 INFO L396 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:49:29,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:49:29,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1785344838, now seen corresponding path program 43 times [2024-11-28 04:49:29,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:49:29,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427959394] [2024-11-28 04:49:29,740 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:49:29,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:49:29,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:49:32,107 INFO L134 CoverageAnalysis]: Checked inductivity of 1058 backedges. 484 proven. 574 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:49:32,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:49:32,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427959394] [2024-11-28 04:49:32,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427959394] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:49:32,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100672886] [2024-11-28 04:49:32,108 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:49:32,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:49:32,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:49:32,109 INFO L229 MonitoredProcess]: Starting monitored process 89 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:49:32,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2024-11-28 04:49:32,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:49:32,238 INFO L256 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-28 04:49:32,240 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:49:35,343 INFO L134 CoverageAnalysis]: Checked inductivity of 1058 backedges. 529 proven. 529 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:49:35,343 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:49:38,111 INFO L134 CoverageAnalysis]: Checked inductivity of 1058 backedges. 529 proven. 529 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:49:38,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100672886] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:49:38,112 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:49:38,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54, 54] total 130 [2024-11-28 04:49:38,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870725853] [2024-11-28 04:49:38,112 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:49:38,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 130 states [2024-11-28 04:49:38,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:49:38,113 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2024-11-28 04:49:38,114 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3040, Invalid=13730, Unknown=0, NotChecked=0, Total=16770 [2024-11-28 04:49:38,114 INFO L87 Difference]: Start difference. First operand 165 states and 169 transitions. Second operand has 130 states, 130 states have (on average 2.0076923076923077) internal successors, (261), 130 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:49:39,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:49:39,043 INFO L93 Difference]: Finished difference Result 179 states and 184 transitions. [2024-11-28 04:49:39,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-11-28 04:49:39,043 INFO L78 Accepts]: Start accepts. Automaton has has 130 states, 130 states have (on average 2.0076923076923077) internal successors, (261), 130 states have internal predecessors, (261), 0 states have call successors, (0), 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 109 [2024-11-28 04:49:39,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:49:39,044 INFO L225 Difference]: With dead ends: 179 [2024-11-28 04:49:39,044 INFO L226 Difference]: Without dead ends: 172 [2024-11-28 04:49:39,045 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 118 SyntacticMatches, 24 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12136 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=3147, Invalid=14145, Unknown=0, NotChecked=0, Total=17292 [2024-11-28 04:49:39,045 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 9 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 1126 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 1133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 04:49:39,046 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 136 Invalid, 1133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1126 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 04:49:39,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2024-11-28 04:49:39,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 167. [2024-11-28 04:49:39,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 1.0301204819277108) internal successors, (171), 166 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:49:39,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 171 transitions. [2024-11-28 04:49:39,109 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 171 transitions. Word has length 109 [2024-11-28 04:49:39,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:49:39,109 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 171 transitions. [2024-11-28 04:49:39,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 130 states, 130 states have (on average 2.0076923076923077) internal successors, (261), 130 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:49:39,110 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 171 transitions. [2024-11-28 04:49:39,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-28 04:49:39,110 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:49:39,111 INFO L218 NwaCegarLoop]: trace histogram [24, 24, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:49:39,121 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Ended with exit code 0 [2024-11-28 04:49:39,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,89 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:49:39,311 INFO L396 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:49:39,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:49:39,312 INFO L85 PathProgramCache]: Analyzing trace with hash 962917058, now seen corresponding path program 46 times [2024-11-28 04:49:39,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:49:39,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104637705] [2024-11-28 04:49:39,312 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:49:39,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:49:39,322 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:49:39,322 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:49:41,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1105 backedges. 529 proven. 576 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:49:41,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:49:41,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104637705] [2024-11-28 04:49:41,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104637705] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:49:41,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960208661] [2024-11-28 04:49:41,451 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:49:41,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:49:41,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:49:41,452 INFO L229 MonitoredProcess]: Starting monitored process 90 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:49:41,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2024-11-28 04:49:41,580 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:49:41,581 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:49:41,582 INFO L256 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-28 04:49:41,584 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:49:45,612 INFO L134 CoverageAnalysis]: Checked inductivity of 1105 backedges. 529 proven. 576 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:49:45,612 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:49:48,616 INFO L134 CoverageAnalysis]: Checked inductivity of 1105 backedges. 576 proven. 529 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:49:48,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [960208661] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:49:48,616 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:49:48,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53, 53] total 126 [2024-11-28 04:49:48,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759388205] [2024-11-28 04:49:48,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:49:48,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 126 states [2024-11-28 04:49:48,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:49:48,619 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2024-11-28 04:49:48,619 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2927, Invalid=12823, Unknown=0, NotChecked=0, Total=15750 [2024-11-28 04:49:48,620 INFO L87 Difference]: Start difference. First operand 167 states and 171 transitions. Second operand has 126 states, 126 states have (on average 2.0317460317460316) internal successors, (256), 126 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:49:49,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:49:49,500 INFO L93 Difference]: Finished difference Result 232 states and 237 transitions. [2024-11-28 04:49:49,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-11-28 04:49:49,500 INFO L78 Accepts]: Start accepts. Automaton has has 126 states, 126 states have (on average 2.0317460317460316) internal successors, (256), 126 states have internal predecessors, (256), 0 states have call successors, (0), 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 111 [2024-11-28 04:49:49,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:49:49,502 INFO L225 Difference]: With dead ends: 232 [2024-11-28 04:49:49,502 INFO L226 Difference]: Without dead ends: 225 [2024-11-28 04:49:49,503 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 123 SyntacticMatches, 26 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9630 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=3032, Invalid=13224, Unknown=0, NotChecked=0, Total=16256 [2024-11-28 04:49:49,503 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 23 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 974 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:49:49,503 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 182 Invalid, 978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 974 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 04:49:49,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2024-11-28 04:49:49,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 169. [2024-11-28 04:49:49,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 168 states have (on average 1.0297619047619047) internal successors, (173), 168 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:49:49,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 173 transitions. [2024-11-28 04:49:49,550 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 173 transitions. Word has length 111 [2024-11-28 04:49:49,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:49:49,550 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 173 transitions. [2024-11-28 04:49:49,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 126 states, 126 states have (on average 2.0317460317460316) internal successors, (256), 126 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:49:49,550 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 173 transitions. [2024-11-28 04:49:49,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-28 04:49:49,551 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:49:49,551 INFO L218 NwaCegarLoop]: trace histogram [24, 24, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:49:49,559 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Ended with exit code 0 [2024-11-28 04:49:49,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,90 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:49:49,751 INFO L396 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:49:49,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:49:49,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1536689506, now seen corresponding path program 44 times [2024-11-28 04:49:49,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:49:49,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456382991] [2024-11-28 04:49:49,752 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:49:49,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:49:49,763 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:49:49,763 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:49:51,884 INFO L134 CoverageAnalysis]: Checked inductivity of 1105 backedges. 531 proven. 574 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:49:51,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:49:51,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456382991] [2024-11-28 04:49:51,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456382991] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:49:51,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409715220] [2024-11-28 04:49:51,885 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:49:51,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:49:51,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:49:51,887 INFO L229 MonitoredProcess]: Starting monitored process 91 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:49:51,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2024-11-28 04:49:52,029 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:49:52,029 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:49:52,031 INFO L256 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-28 04:49:52,033 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:49:55,482 INFO L134 CoverageAnalysis]: Checked inductivity of 1105 backedges. 576 proven. 529 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:49:55,482 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:49:58,159 INFO L134 CoverageAnalysis]: Checked inductivity of 1105 backedges. 576 proven. 529 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:49:58,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409715220] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:49:58,159 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:49:58,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 53, 53] total 129 [2024-11-28 04:49:58,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722477634] [2024-11-28 04:49:58,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:49:58,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 129 states [2024-11-28 04:49:58,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:49:58,161 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2024-11-28 04:49:58,162 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3038, Invalid=13474, Unknown=0, NotChecked=0, Total=16512 [2024-11-28 04:49:58,162 INFO L87 Difference]: Start difference. First operand 169 states and 173 transitions. Second operand has 129 states, 129 states have (on average 2.0232558139534884) internal successors, (261), 129 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:49:59,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:49:59,120 INFO L93 Difference]: Finished difference Result 230 states and 234 transitions. [2024-11-28 04:49:59,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-11-28 04:49:59,120 INFO L78 Accepts]: Start accepts. Automaton has has 129 states, 129 states have (on average 2.0232558139534884) internal successors, (261), 129 states have internal predecessors, (261), 0 states have call successors, (0), 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 111 [2024-11-28 04:49:59,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:49:59,121 INFO L225 Difference]: With dead ends: 230 [2024-11-28 04:49:59,121 INFO L226 Difference]: Without dead ends: 169 [2024-11-28 04:49:59,122 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 123 SyntacticMatches, 24 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12034 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=3103, Invalid=13927, Unknown=0, NotChecked=0, Total=17030 [2024-11-28 04:49:59,122 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 13 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 944 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:49:59,122 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 111 Invalid, 949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 944 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 04:49:59,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2024-11-28 04:49:59,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 168. [2024-11-28 04:49:59,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 167 states have (on average 1.0239520958083832) internal successors, (171), 167 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:49:59,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 171 transitions. [2024-11-28 04:49:59,160 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 171 transitions. Word has length 111 [2024-11-28 04:49:59,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:49:59,160 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 171 transitions. [2024-11-28 04:49:59,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 129 states, 129 states have (on average 2.0232558139534884) internal successors, (261), 129 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:49:59,160 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 171 transitions. [2024-11-28 04:49:59,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-28 04:49:59,160 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:49:59,160 INFO L218 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:49:59,170 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Ended with exit code 0 [2024-11-28 04:49:59,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 91 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable95 [2024-11-28 04:49:59,361 INFO L396 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:49:59,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:49:59,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1970786978, now seen corresponding path program 47 times [2024-11-28 04:49:59,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:49:59,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612220551] [2024-11-28 04:49:59,362 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:49:59,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:49:59,374 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2024-11-28 04:49:59,374 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:50:01,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1152 backedges. 576 proven. 576 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:50:01,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:50:01,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612220551] [2024-11-28 04:50:01,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612220551] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:50:01,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345769456] [2024-11-28 04:50:01,469 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:50:01,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:50:01,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:50:01,471 INFO L229 MonitoredProcess]: Starting monitored process 92 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:50:01,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2024-11-28 04:50:01,610 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2024-11-28 04:50:01,610 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:50:01,612 INFO L256 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-11-28 04:50:01,614 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:50:05,149 INFO L134 CoverageAnalysis]: Checked inductivity of 1152 backedges. 576 proven. 576 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:50:05,149 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:50:08,194 INFO L134 CoverageAnalysis]: Checked inductivity of 1152 backedges. 576 proven. 576 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:50:08,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [345769456] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:50:08,194 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:50:08,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56, 56] total 135 [2024-11-28 04:50:08,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688816093] [2024-11-28 04:50:08,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:50:08,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 135 states [2024-11-28 04:50:08,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:50:08,196 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 135 interpolants. [2024-11-28 04:50:08,196 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3258, Invalid=14832, Unknown=0, NotChecked=0, Total=18090 [2024-11-28 04:50:08,196 INFO L87 Difference]: Start difference. First operand 168 states and 171 transitions. Second operand has 135 states, 135 states have (on average 1.9851851851851852) internal successors, (268), 135 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:50:09,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:50:09,095 INFO L93 Difference]: Finished difference Result 235 states and 241 transitions. [2024-11-28 04:50:09,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-11-28 04:50:09,095 INFO L78 Accepts]: Start accepts. Automaton has has 135 states, 135 states have (on average 1.9851851851851852) internal successors, (268), 135 states have internal predecessors, (268), 0 states have call successors, (0), 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 113 [2024-11-28 04:50:09,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:50:09,096 INFO L225 Difference]: With dead ends: 235 [2024-11-28 04:50:09,096 INFO L226 Difference]: Without dead ends: 172 [2024-11-28 04:50:09,097 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 120 SyntacticMatches, 27 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13178 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=3302, Invalid=15330, Unknown=0, NotChecked=0, Total=18632 [2024-11-28 04:50:09,098 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 7 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 810 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:50:09,098 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 122 Invalid, 816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 810 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 04:50:09,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2024-11-28 04:50:09,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 171. [2024-11-28 04:50:09,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 170 states have (on average 1.0294117647058822) internal successors, (175), 170 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:50:09,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 175 transitions. [2024-11-28 04:50:09,164 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 175 transitions. Word has length 113 [2024-11-28 04:50:09,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:50:09,164 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 175 transitions. [2024-11-28 04:50:09,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 135 states, 135 states have (on average 1.9851851851851852) internal successors, (268), 135 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:50:09,165 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 175 transitions. [2024-11-28 04:50:09,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-28 04:50:09,165 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:50:09,165 INFO L218 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:50:09,176 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Ended with exit code 0 [2024-11-28 04:50:09,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,92 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:50:09,366 INFO L396 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:50:09,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:50:09,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1826221346, now seen corresponding path program 45 times [2024-11-28 04:50:09,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:50:09,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618813664] [2024-11-28 04:50:09,366 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:50:09,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:50:09,381 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 25 check-sat command(s) [2024-11-28 04:50:09,381 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:50:11,907 INFO L134 CoverageAnalysis]: Checked inductivity of 1152 backedges. 529 proven. 623 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:50:11,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:50:11,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618813664] [2024-11-28 04:50:11,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618813664] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:50:11,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846388712] [2024-11-28 04:50:11,908 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:50:11,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:50:11,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:50:11,910 INFO L229 MonitoredProcess]: Starting monitored process 93 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:50:11,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2024-11-28 04:50:12,059 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 25 check-sat command(s) [2024-11-28 04:50:12,059 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:50:12,061 INFO L256 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-11-28 04:50:12,064 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:50:15,353 INFO L134 CoverageAnalysis]: Checked inductivity of 1152 backedges. 576 proven. 576 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:50:15,353 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:50:18,284 INFO L134 CoverageAnalysis]: Checked inductivity of 1152 backedges. 576 proven. 576 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:50:18,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846388712] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:50:18,284 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:50:18,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56, 56] total 135 [2024-11-28 04:50:18,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146862403] [2024-11-28 04:50:18,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:50:18,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 135 states [2024-11-28 04:50:18,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:50:18,286 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 135 interpolants. [2024-11-28 04:50:18,286 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3278, Invalid=14812, Unknown=0, NotChecked=0, Total=18090 [2024-11-28 04:50:18,287 INFO L87 Difference]: Start difference. First operand 171 states and 175 transitions. Second operand has 135 states, 135 states have (on average 2.0074074074074075) internal successors, (271), 135 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:50:19,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:50:19,127 INFO L93 Difference]: Finished difference Result 185 states and 190 transitions. [2024-11-28 04:50:19,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-11-28 04:50:19,128 INFO L78 Accepts]: Start accepts. Automaton has has 135 states, 135 states have (on average 2.0074074074074075) internal successors, (271), 135 states have internal predecessors, (271), 0 states have call successors, (0), 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 113 [2024-11-28 04:50:19,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:50:19,129 INFO L225 Difference]: With dead ends: 185 [2024-11-28 04:50:19,129 INFO L226 Difference]: Without dead ends: 178 [2024-11-28 04:50:19,130 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 122 SyntacticMatches, 25 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13129 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=3389, Invalid=15243, Unknown=0, NotChecked=0, Total=18632 [2024-11-28 04:50:19,130 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 11 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 921 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:50:19,130 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 118 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 921 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 04:50:19,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2024-11-28 04:50:19,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 173. [2024-11-28 04:50:19,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 172 states have (on average 1.0290697674418605) internal successors, (177), 172 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:50:19,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 177 transitions. [2024-11-28 04:50:19,195 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 177 transitions. Word has length 113 [2024-11-28 04:50:19,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:50:19,195 INFO L471 AbstractCegarLoop]: Abstraction has 173 states and 177 transitions. [2024-11-28 04:50:19,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 135 states, 135 states have (on average 2.0074074074074075) internal successors, (271), 135 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:50:19,196 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 177 transitions. [2024-11-28 04:50:19,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-28 04:50:19,196 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:50:19,196 INFO L218 NwaCegarLoop]: trace histogram [25, 25, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:50:19,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Forceful destruction successful, exit code 0 [2024-11-28 04:50:19,396 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 93 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable97 [2024-11-28 04:50:19,397 INFO L396 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:50:19,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:50:19,397 INFO L85 PathProgramCache]: Analyzing trace with hash 382258138, now seen corresponding path program 48 times [2024-11-28 04:50:19,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:50:19,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173740574] [2024-11-28 04:50:19,397 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:50:19,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:50:19,413 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 26 check-sat command(s) [2024-11-28 04:50:19,413 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:50:21,918 INFO L134 CoverageAnalysis]: Checked inductivity of 1201 backedges. 529 proven. 672 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:50:21,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:50:21,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173740574] [2024-11-28 04:50:21,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173740574] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:50:21,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487998624] [2024-11-28 04:50:21,918 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:50:21,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:50:21,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:50:21,921 INFO L229 MonitoredProcess]: Starting monitored process 94 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:50:21,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2024-11-28 04:50:22,069 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 26 check-sat command(s) [2024-11-28 04:50:22,070 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:50:22,072 INFO L256 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-28 04:50:22,074 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:50:25,168 INFO L134 CoverageAnalysis]: Checked inductivity of 1201 backedges. 576 proven. 625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:50:25,168 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:50:28,087 INFO L134 CoverageAnalysis]: Checked inductivity of 1201 backedges. 625 proven. 576 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:50:28,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487998624] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:50:28,088 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:50:28,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 55, 55] total 134 [2024-11-28 04:50:28,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102278694] [2024-11-28 04:50:28,088 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:50:28,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 134 states [2024-11-28 04:50:28,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:50:28,089 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2024-11-28 04:50:28,090 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3300, Invalid=14522, Unknown=0, NotChecked=0, Total=17822 [2024-11-28 04:50:28,090 INFO L87 Difference]: Start difference. First operand 173 states and 177 transitions. Second operand has 134 states, 134 states have (on average 2.037313432835821) internal successors, (273), 134 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:50:28,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:50:28,859 INFO L93 Difference]: Finished difference Result 240 states and 245 transitions. [2024-11-28 04:50:28,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-11-28 04:50:28,859 INFO L78 Accepts]: Start accepts. Automaton has has 134 states, 134 states have (on average 2.037313432835821) internal successors, (273), 134 states have internal predecessors, (273), 0 states have call successors, (0), 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 115 [2024-11-28 04:50:28,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:50:28,860 INFO L225 Difference]: With dead ends: 240 [2024-11-28 04:50:28,860 INFO L226 Difference]: Without dead ends: 233 [2024-11-28 04:50:28,861 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 127 SyntacticMatches, 25 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13078 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=3411, Invalid=14949, Unknown=0, NotChecked=0, Total=18360 [2024-11-28 04:50:28,861 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 17 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 768 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:50:28,861 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 125 Invalid, 775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 768 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 04:50:28,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2024-11-28 04:50:28,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 175. [2024-11-28 04:50:28,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 174 states have (on average 1.028735632183908) internal successors, (179), 174 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:50:28,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 179 transitions. [2024-11-28 04:50:28,910 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 179 transitions. Word has length 115 [2024-11-28 04:50:28,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:50:28,910 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 179 transitions. [2024-11-28 04:50:28,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 134 states, 134 states have (on average 2.037313432835821) internal successors, (273), 134 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:50:28,911 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 179 transitions. [2024-11-28 04:50:28,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-28 04:50:28,911 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:50:28,911 INFO L218 NwaCegarLoop]: trace histogram [25, 25, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:50:28,918 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Forceful destruction successful, exit code 0 [2024-11-28 04:50:29,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2024-11-28 04:50:29,112 INFO L396 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:50:29,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:50:29,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1155161850, now seen corresponding path program 46 times [2024-11-28 04:50:29,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:50:29,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316165352] [2024-11-28 04:50:29,112 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:50:29,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:50:29,122 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:50:29,122 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:50:31,368 INFO L134 CoverageAnalysis]: Checked inductivity of 1201 backedges. 625 proven. 576 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:50:31,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:50:31,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316165352] [2024-11-28 04:50:31,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316165352] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:50:31,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133800926] [2024-11-28 04:50:31,368 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:50:31,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:50:31,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:50:31,370 INFO L229 MonitoredProcess]: Starting monitored process 95 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:50:31,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2024-11-28 04:50:31,499 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:50:31,499 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:50:31,501 INFO L256 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-28 04:50:31,503 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:50:35,004 INFO L134 CoverageAnalysis]: Checked inductivity of 1201 backedges. 625 proven. 576 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:50:35,004 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:50:38,525 INFO L134 CoverageAnalysis]: Checked inductivity of 1201 backedges. 625 proven. 576 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:50:38,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133800926] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:50:38,525 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:50:38,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55, 55] total 131 [2024-11-28 04:50:38,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488741181] [2024-11-28 04:50:38,526 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:50:38,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 131 states [2024-11-28 04:50:38,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:50:38,527 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2024-11-28 04:50:38,528 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3161, Invalid=13869, Unknown=0, NotChecked=0, Total=17030 [2024-11-28 04:50:38,528 INFO L87 Difference]: Start difference. First operand 175 states and 179 transitions. Second operand has 131 states, 131 states have (on average 2.030534351145038) internal successors, (266), 131 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:50:39,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:50:39,354 INFO L93 Difference]: Finished difference Result 238 states and 242 transitions. [2024-11-28 04:50:39,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-11-28 04:50:39,355 INFO L78 Accepts]: Start accepts. Automaton has has 131 states, 131 states have (on average 2.030534351145038) internal successors, (266), 131 states have internal predecessors, (266), 0 states have call successors, (0), 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 115 [2024-11-28 04:50:39,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:50:39,356 INFO L225 Difference]: With dead ends: 238 [2024-11-28 04:50:39,356 INFO L226 Difference]: Without dead ends: 175 [2024-11-28 04:50:39,356 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 128 SyntacticMatches, 26 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10394 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=3224, Invalid=14332, Unknown=0, NotChecked=0, Total=17556 [2024-11-28 04:50:39,357 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 11 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:50:39,357 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 122 Invalid, 840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 836 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 04:50:39,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2024-11-28 04:50:39,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 174. [2024-11-28 04:50:39,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 1.023121387283237) internal successors, (177), 173 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:50:39,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 177 transitions. [2024-11-28 04:50:39,401 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 177 transitions. Word has length 115 [2024-11-28 04:50:39,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:50:39,401 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 177 transitions. [2024-11-28 04:50:39,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 131 states, 131 states have (on average 2.030534351145038) internal successors, (266), 131 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:50:39,401 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 177 transitions. [2024-11-28 04:50:39,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-28 04:50:39,402 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:50:39,402 INFO L218 NwaCegarLoop]: trace histogram [25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:50:39,410 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Ended with exit code 0 [2024-11-28 04:50:39,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable99 [2024-11-28 04:50:39,602 INFO L396 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:50:39,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:50:39,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1638260618, now seen corresponding path program 49 times [2024-11-28 04:50:39,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:50:39,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578908831] [2024-11-28 04:50:39,603 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:50:39,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:50:39,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:50:41,772 INFO L134 CoverageAnalysis]: Checked inductivity of 1250 backedges. 576 proven. 674 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:50:41,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:50:41,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578908831] [2024-11-28 04:50:41,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578908831] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:50:41,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626337571] [2024-11-28 04:50:41,773 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:50:41,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:50:41,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:50:41,774 INFO L229 MonitoredProcess]: Starting monitored process 96 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:50:41,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2024-11-28 04:50:41,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:50:41,907 INFO L256 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-28 04:50:41,910 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:50:45,590 INFO L134 CoverageAnalysis]: Checked inductivity of 1250 backedges. 625 proven. 625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:50:45,590 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:50:48,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1250 backedges. 625 proven. 625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:50:48,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626337571] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:50:48,799 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:50:48,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58, 58] total 141 [2024-11-28 04:50:48,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517583053] [2024-11-28 04:50:48,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:50:48,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 141 states [2024-11-28 04:50:48,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:50:48,801 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 141 interpolants. [2024-11-28 04:50:48,802 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3509, Invalid=16231, Unknown=0, NotChecked=0, Total=19740 [2024-11-28 04:50:48,803 INFO L87 Difference]: Start difference. First operand 174 states and 177 transitions. Second operand has 141 states, 141 states have (on average 1.9929078014184398) internal successors, (281), 141 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:50:50,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:50:50,103 INFO L93 Difference]: Finished difference Result 243 states and 249 transitions. [2024-11-28 04:50:50,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-11-28 04:50:50,103 INFO L78 Accepts]: Start accepts. Automaton has has 141 states, 141 states have (on average 1.9929078014184398) internal successors, (281), 141 states have internal predecessors, (281), 0 states have call successors, (0), 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 117 [2024-11-28 04:50:50,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:50:50,105 INFO L225 Difference]: With dead ends: 243 [2024-11-28 04:50:50,105 INFO L226 Difference]: Without dead ends: 178 [2024-11-28 04:50:50,106 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 124 SyntacticMatches, 27 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14420 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=3554, Invalid=16752, Unknown=0, NotChecked=0, Total=20306 [2024-11-28 04:50:50,106 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 15 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 1335 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 1339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 04:50:50,106 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 147 Invalid, 1339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1335 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 04:50:50,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2024-11-28 04:50:50,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 177. [2024-11-28 04:50:50,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 176 states have (on average 1.0284090909090908) internal successors, (181), 176 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:50:50,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 181 transitions. [2024-11-28 04:50:50,160 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 181 transitions. Word has length 117 [2024-11-28 04:50:50,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:50:50,160 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 181 transitions. [2024-11-28 04:50:50,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 141 states, 141 states have (on average 1.9929078014184398) internal successors, (281), 141 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:50:50,160 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 181 transitions. [2024-11-28 04:50:50,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-28 04:50:50,160 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:50:50,161 INFO L218 NwaCegarLoop]: trace histogram [25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:50:50,168 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Ended with exit code 0 [2024-11-28 04:50:50,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2024-11-28 04:50:50,361 INFO L396 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:50:50,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:50:50,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1016246666, now seen corresponding path program 47 times [2024-11-28 04:50:50,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:50:50,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325709090] [2024-11-28 04:50:50,362 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:50:50,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:50:50,376 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 26 check-sat command(s) [2024-11-28 04:50:50,376 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:50:53,048 INFO L134 CoverageAnalysis]: Checked inductivity of 1250 backedges. 625 proven. 625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:50:53,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:50:53,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325709090] [2024-11-28 04:50:53,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325709090] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:50:53,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412610456] [2024-11-28 04:50:53,048 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:50:53,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:50:53,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:50:53,050 INFO L229 MonitoredProcess]: Starting monitored process 97 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:50:53,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2024-11-28 04:50:53,199 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 26 check-sat command(s) [2024-11-28 04:50:53,199 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:50:53,203 INFO L256 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-28 04:50:53,206 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:50:56,643 INFO L134 CoverageAnalysis]: Checked inductivity of 1250 backedges. 625 proven. 625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:50:56,643 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:50:59,774 INFO L134 CoverageAnalysis]: Checked inductivity of 1250 backedges. 625 proven. 625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:50:59,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412610456] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:50:59,775 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:50:59,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58, 58] total 139 [2024-11-28 04:50:59,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418898751] [2024-11-28 04:50:59,775 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:50:59,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 139 states [2024-11-28 04:50:59,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:50:59,777 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2024-11-28 04:50:59,777 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3495, Invalid=15687, Unknown=0, NotChecked=0, Total=19182 [2024-11-28 04:50:59,778 INFO L87 Difference]: Start difference. First operand 177 states and 181 transitions. Second operand has 139 states, 139 states have (on average 2.0) internal successors, (278), 139 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) [2024-11-28 04:51:00,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:51:00,685 INFO L93 Difference]: Finished difference Result 191 states and 196 transitions. [2024-11-28 04:51:00,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-11-28 04:51:00,685 INFO L78 Accepts]: Start accepts. Automaton has has 139 states, 139 states have (on average 2.0) internal successors, (278), 139 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) Word has length 117 [2024-11-28 04:51:00,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:51:00,686 INFO L225 Difference]: With dead ends: 191 [2024-11-28 04:51:00,686 INFO L226 Difference]: Without dead ends: 184 [2024-11-28 04:51:00,687 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 126 SyntacticMatches, 27 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13927 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=3610, Invalid=16130, Unknown=0, NotChecked=0, Total=19740 [2024-11-28 04:51:00,688 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 11 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 1034 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 1042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1034 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:51:00,688 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 112 Invalid, 1042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1034 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 04:51:00,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-11-28 04:51:00,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 179. [2024-11-28 04:51:00,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 178 states have (on average 1.0280898876404494) internal successors, (183), 178 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:51:00,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 183 transitions. [2024-11-28 04:51:00,765 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 183 transitions. Word has length 117 [2024-11-28 04:51:00,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:51:00,765 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 183 transitions. [2024-11-28 04:51:00,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 139 states, 139 states have (on average 2.0) internal successors, (278), 139 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) [2024-11-28 04:51:00,765 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 183 transitions. [2024-11-28 04:51:00,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-28 04:51:00,766 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:51:00,766 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:51:00,779 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Ended with exit code 0 [2024-11-28 04:51:00,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2024-11-28 04:51:00,967 INFO L396 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:51:00,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:51:00,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1007738638, now seen corresponding path program 50 times [2024-11-28 04:51:00,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:51:00,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013131937] [2024-11-28 04:51:00,967 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:51:00,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:51:00,989 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:51:00,989 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:51:03,710 INFO L134 CoverageAnalysis]: Checked inductivity of 1301 backedges. 576 proven. 725 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:51:03,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:51:03,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013131937] [2024-11-28 04:51:03,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013131937] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:51:03,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886542540] [2024-11-28 04:51:03,711 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:51:03,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:51:03,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:51:03,712 INFO L229 MonitoredProcess]: Starting monitored process 98 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:51:03,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2024-11-28 04:51:03,848 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:51:03,848 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:51:03,850 INFO L256 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-28 04:51:03,851 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:51:07,200 INFO L134 CoverageAnalysis]: Checked inductivity of 1301 backedges. 625 proven. 676 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:51:07,200 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:51:10,348 INFO L134 CoverageAnalysis]: Checked inductivity of 1301 backedges. 676 proven. 625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:51:10,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1886542540] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:51:10,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:51:10,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 57, 57] total 139 [2024-11-28 04:51:10,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545847857] [2024-11-28 04:51:10,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:51:10,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 139 states [2024-11-28 04:51:10,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:51:10,350 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2024-11-28 04:51:10,351 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3548, Invalid=15634, Unknown=0, NotChecked=0, Total=19182 [2024-11-28 04:51:10,351 INFO L87 Difference]: Start difference. First operand 179 states and 183 transitions. Second operand has 139 states, 139 states have (on average 2.035971223021583) internal successors, (283), 139 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) [2024-11-28 04:51:11,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:51:11,313 INFO L93 Difference]: Finished difference Result 248 states and 253 transitions. [2024-11-28 04:51:11,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-11-28 04:51:11,314 INFO L78 Accepts]: Start accepts. Automaton has has 139 states, 139 states have (on average 2.035971223021583) internal successors, (283), 139 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 119 [2024-11-28 04:51:11,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:51:11,315 INFO L225 Difference]: With dead ends: 248 [2024-11-28 04:51:11,315 INFO L226 Difference]: Without dead ends: 241 [2024-11-28 04:51:11,316 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 131 SyntacticMatches, 26 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14108 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=3663, Invalid=16077, Unknown=0, NotChecked=0, Total=19740 [2024-11-28 04:51:11,316 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 15 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 1075 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 1080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 04:51:11,317 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 142 Invalid, 1080 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1075 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 04:51:11,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2024-11-28 04:51:11,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 181. [2024-11-28 04:51:11,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 1.0277777777777777) internal successors, (185), 180 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:51:11,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 185 transitions. [2024-11-28 04:51:11,373 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 185 transitions. Word has length 119 [2024-11-28 04:51:11,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:51:11,373 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 185 transitions. [2024-11-28 04:51:11,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 139 states, 139 states have (on average 2.035971223021583) internal successors, (283), 139 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) [2024-11-28 04:51:11,374 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 185 transitions. [2024-11-28 04:51:11,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-28 04:51:11,374 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:51:11,374 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:51:11,381 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Ended with exit code 0 [2024-11-28 04:51:11,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2024-11-28 04:51:11,575 INFO L396 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:51:11,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:51:11,575 INFO L85 PathProgramCache]: Analyzing trace with hash -2143218542, now seen corresponding path program 48 times [2024-11-28 04:51:11,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:51:11,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186775891] [2024-11-28 04:51:11,575 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:51:11,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:51:11,590 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) [2024-11-28 04:51:11,591 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:51:13,726 INFO L134 CoverageAnalysis]: Checked inductivity of 1301 backedges. 627 proven. 674 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:51:13,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:51:13,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186775891] [2024-11-28 04:51:13,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186775891] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:51:13,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280190950] [2024-11-28 04:51:13,726 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:51:13,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:51:13,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:51:13,728 INFO L229 MonitoredProcess]: Starting monitored process 99 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:51:13,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2024-11-28 04:51:13,885 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) [2024-11-28 04:51:13,885 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:51:13,887 INFO L256 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-28 04:51:13,889 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:51:17,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1301 backedges. 676 proven. 625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:51:17,485 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:51:20,505 INFO L134 CoverageAnalysis]: Checked inductivity of 1301 backedges. 676 proven. 625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:51:20,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280190950] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:51:20,505 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:51:20,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 57, 57] total 139 [2024-11-28 04:51:20,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612343361] [2024-11-28 04:51:20,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:51:20,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 139 states [2024-11-28 04:51:20,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:51:20,507 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2024-11-28 04:51:20,508 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3523, Invalid=15659, Unknown=0, NotChecked=0, Total=19182 [2024-11-28 04:51:20,508 INFO L87 Difference]: Start difference. First operand 181 states and 185 transitions. Second operand has 139 states, 139 states have (on average 2.0215827338129495) internal successors, (281), 139 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:51:21,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:51:21,479 INFO L93 Difference]: Finished difference Result 246 states and 250 transitions. [2024-11-28 04:51:21,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-11-28 04:51:21,480 INFO L78 Accepts]: Start accepts. Automaton has has 139 states, 139 states have (on average 2.0215827338129495) internal successors, (281), 139 states have internal predecessors, (281), 0 states have call successors, (0), 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 119 [2024-11-28 04:51:21,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:51:21,481 INFO L225 Difference]: With dead ends: 246 [2024-11-28 04:51:21,481 INFO L226 Difference]: Without dead ends: 181 [2024-11-28 04:51:21,482 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 131 SyntacticMatches, 26 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14051 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=3592, Invalid=16148, Unknown=0, NotChecked=0, Total=19740 [2024-11-28 04:51:21,482 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 8 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 933 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:51:21,482 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 141 Invalid, 939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 933 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 04:51:21,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2024-11-28 04:51:21,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 180. [2024-11-28 04:51:21,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 1.0223463687150838) internal successors, (183), 179 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:51:21,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 183 transitions. [2024-11-28 04:51:21,536 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 183 transitions. Word has length 119 [2024-11-28 04:51:21,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:51:21,536 INFO L471 AbstractCegarLoop]: Abstraction has 180 states and 183 transitions. [2024-11-28 04:51:21,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 139 states, 139 states have (on average 2.0215827338129495) internal successors, (281), 139 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:51:21,536 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 183 transitions. [2024-11-28 04:51:21,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-28 04:51:21,536 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:51:21,536 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:51:21,544 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Ended with exit code 0 [2024-11-28 04:51:21,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2024-11-28 04:51:21,737 INFO L396 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:51:21,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:51:21,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1690333298, now seen corresponding path program 51 times [2024-11-28 04:51:21,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:51:21,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369859860] [2024-11-28 04:51:21,737 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:51:21,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:51:21,760 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2024-11-28 04:51:21,760 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:51:24,309 INFO L134 CoverageAnalysis]: Checked inductivity of 1352 backedges. 625 proven. 727 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:51:24,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:51:24,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369859860] [2024-11-28 04:51:24,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369859860] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:51:24,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005891178] [2024-11-28 04:51:24,310 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:51:24,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:51:24,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:51:24,312 INFO L229 MonitoredProcess]: Starting monitored process 100 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:51:24,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2024-11-28 04:51:24,473 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2024-11-28 04:51:24,473 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:51:24,475 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-11-28 04:51:24,477 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:51:28,410 INFO L134 CoverageAnalysis]: Checked inductivity of 1352 backedges. 676 proven. 676 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:51:28,410 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:51:31,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1352 backedges. 676 proven. 676 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:51:31,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005891178] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:51:31,860 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:51:31,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60, 60] total 146 [2024-11-28 04:51:31,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901155954] [2024-11-28 04:51:31,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:51:31,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 146 states [2024-11-28 04:51:31,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:51:31,862 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2024-11-28 04:51:31,863 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3764, Invalid=17406, Unknown=0, NotChecked=0, Total=21170 [2024-11-28 04:51:31,863 INFO L87 Difference]: Start difference. First operand 180 states and 183 transitions. Second operand has 146 states, 146 states have (on average 1.9931506849315068) internal successors, (291), 146 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:51:33,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:51:33,051 INFO L93 Difference]: Finished difference Result 251 states and 257 transitions. [2024-11-28 04:51:33,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-11-28 04:51:33,052 INFO L78 Accepts]: Start accepts. Automaton has has 146 states, 146 states have (on average 1.9931506849315068) internal successors, (291), 146 states have internal predecessors, (291), 0 states have call successors, (0), 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 121 [2024-11-28 04:51:33,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:51:33,053 INFO L225 Difference]: With dead ends: 251 [2024-11-28 04:51:33,053 INFO L226 Difference]: Without dead ends: 184 [2024-11-28 04:51:33,054 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 129 SyntacticMatches, 27 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15418 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=3810, Invalid=17946, Unknown=0, NotChecked=0, Total=21756 [2024-11-28 04:51:33,055 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 8 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 1115 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 1121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 04:51:33,055 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 132 Invalid, 1121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1115 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 04:51:33,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-11-28 04:51:33,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 183. [2024-11-28 04:51:33,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 182 states have (on average 1.0274725274725274) internal successors, (187), 182 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:51:33,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 187 transitions. [2024-11-28 04:51:33,111 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 187 transitions. Word has length 121 [2024-11-28 04:51:33,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:51:33,111 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 187 transitions. [2024-11-28 04:51:33,112 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 146 states, 146 states have (on average 1.9931506849315068) internal successors, (291), 146 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:51:33,112 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 187 transitions. [2024-11-28 04:51:33,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-28 04:51:33,112 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:51:33,112 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:51:33,126 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Ended with exit code 0 [2024-11-28 04:51:33,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable104 [2024-11-28 04:51:33,313 INFO L396 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:51:33,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:51:33,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1801984498, now seen corresponding path program 49 times [2024-11-28 04:51:33,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:51:33,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774342844] [2024-11-28 04:51:33,313 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:51:33,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:51:33,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:51:36,456 INFO L134 CoverageAnalysis]: Checked inductivity of 1352 backedges. 625 proven. 727 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:51:36,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:51:36,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774342844] [2024-11-28 04:51:36,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774342844] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:51:36,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158063740] [2024-11-28 04:51:36,457 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:51:36,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:51:36,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:51:36,459 INFO L229 MonitoredProcess]: Starting monitored process 101 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:51:36,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2024-11-28 04:51:36,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:51:36,632 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-11-28 04:51:36,636 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:51:40,661 INFO L134 CoverageAnalysis]: Checked inductivity of 1352 backedges. 676 proven. 676 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:51:40,662 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:51:44,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1352 backedges. 676 proven. 676 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:51:44,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158063740] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:51:44,017 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:51:44,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60, 60] total 145 [2024-11-28 04:51:44,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308900577] [2024-11-28 04:51:44,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:51:44,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 145 states [2024-11-28 04:51:44,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:51:44,018 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 145 interpolants. [2024-11-28 04:51:44,019 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3781, Invalid=17099, Unknown=0, NotChecked=0, Total=20880 [2024-11-28 04:51:44,019 INFO L87 Difference]: Start difference. First operand 183 states and 187 transitions. Second operand has 145 states, 145 states have (on average 2.0068965517241377) internal successors, (291), 145 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:51:45,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:51:45,124 INFO L93 Difference]: Finished difference Result 197 states and 202 transitions. [2024-11-28 04:51:45,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-11-28 04:51:45,124 INFO L78 Accepts]: Start accepts. Automaton has has 145 states, 145 states have (on average 2.0068965517241377) internal successors, (291), 145 states have internal predecessors, (291), 0 states have call successors, (0), 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 121 [2024-11-28 04:51:45,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:51:45,125 INFO L225 Difference]: With dead ends: 197 [2024-11-28 04:51:45,125 INFO L226 Difference]: Without dead ends: 190 [2024-11-28 04:51:45,126 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 130 SyntacticMatches, 27 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15232 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=3900, Invalid=17562, Unknown=0, NotChecked=0, Total=21462 [2024-11-28 04:51:45,126 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 10 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 1299 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 1307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 04:51:45,126 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 141 Invalid, 1307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1299 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 04:51:45,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2024-11-28 04:51:45,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 185. [2024-11-28 04:51:45,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 184 states have (on average 1.0271739130434783) internal successors, (189), 184 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:51:45,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 189 transitions. [2024-11-28 04:51:45,187 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 189 transitions. Word has length 121 [2024-11-28 04:51:45,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:51:45,187 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 189 transitions. [2024-11-28 04:51:45,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 145 states, 145 states have (on average 2.0068965517241377) internal successors, (291), 145 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:51:45,187 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 189 transitions. [2024-11-28 04:51:45,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-28 04:51:45,188 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:51:45,188 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:51:45,195 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Ended with exit code 0 [2024-11-28 04:51:45,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105,101 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:51:45,388 INFO L396 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:51:45,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:51:45,389 INFO L85 PathProgramCache]: Analyzing trace with hash -181931510, now seen corresponding path program 52 times [2024-11-28 04:51:45,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:51:45,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293022241] [2024-11-28 04:51:45,389 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:51:45,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:51:45,399 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:51:45,399 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:51:48,005 INFO L134 CoverageAnalysis]: Checked inductivity of 1405 backedges. 676 proven. 729 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:51:48,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:51:48,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293022241] [2024-11-28 04:51:48,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293022241] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:51:48,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791406810] [2024-11-28 04:51:48,005 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:51:48,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:51:48,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:51:48,007 INFO L229 MonitoredProcess]: Starting monitored process 102 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:51:48,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2024-11-28 04:51:48,144 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:51:48,144 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:51:48,146 INFO L256 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-28 04:51:48,148 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:51:53,117 INFO L134 CoverageAnalysis]: Checked inductivity of 1405 backedges. 676 proven. 729 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:51:53,117 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:51:56,716 INFO L134 CoverageAnalysis]: Checked inductivity of 1405 backedges. 729 proven. 676 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:51:56,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1791406810] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:51:56,716 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:51:56,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59, 59] total 141 [2024-11-28 04:51:56,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587206960] [2024-11-28 04:51:56,716 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:51:56,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 141 states [2024-11-28 04:51:56,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:51:56,718 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 141 interpolants. [2024-11-28 04:51:56,718 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3656, Invalid=16084, Unknown=0, NotChecked=0, Total=19740 [2024-11-28 04:51:56,719 INFO L87 Difference]: Start difference. First operand 185 states and 189 transitions. Second operand has 141 states, 141 states have (on average 2.028368794326241) internal successors, (286), 141 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) [2024-11-28 04:51:57,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:51:57,582 INFO L93 Difference]: Finished difference Result 256 states and 261 transitions. [2024-11-28 04:51:57,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-11-28 04:51:57,582 INFO L78 Accepts]: Start accepts. Automaton has has 141 states, 141 states have (on average 2.028368794326241) internal successors, (286), 141 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 123 [2024-11-28 04:51:57,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:51:57,583 INFO L225 Difference]: With dead ends: 256 [2024-11-28 04:51:57,583 INFO L226 Difference]: Without dead ends: 249 [2024-11-28 04:51:57,584 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 135 SyntacticMatches, 29 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12171 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=3773, Invalid=16533, Unknown=0, NotChecked=0, Total=20306 [2024-11-28 04:51:57,585 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 18 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 840 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:51:57,585 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 123 Invalid, 849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 840 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 04:51:57,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2024-11-28 04:51:57,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 187. [2024-11-28 04:51:57,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 186 states have (on average 1.0268817204301075) internal successors, (191), 186 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:51:57,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 191 transitions. [2024-11-28 04:51:57,679 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 191 transitions. Word has length 123 [2024-11-28 04:51:57,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:51:57,680 INFO L471 AbstractCegarLoop]: Abstraction has 187 states and 191 transitions. [2024-11-28 04:51:57,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 141 states, 141 states have (on average 2.028368794326241) internal successors, (286), 141 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) [2024-11-28 04:51:57,680 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 191 transitions. [2024-11-28 04:51:57,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-28 04:51:57,681 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:51:57,681 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:51:57,692 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Ended with exit code 0 [2024-11-28 04:51:57,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2024-11-28 04:51:57,882 INFO L396 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:51:57,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:51:57,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1323030998, now seen corresponding path program 50 times [2024-11-28 04:51:57,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:51:57,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012962585] [2024-11-28 04:51:57,882 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:51:57,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:51:57,896 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:51:57,896 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:52:00,112 INFO L134 CoverageAnalysis]: Checked inductivity of 1405 backedges. 678 proven. 727 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:52:00,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:52:00,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012962585] [2024-11-28 04:52:00,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012962585] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:52:00,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776480837] [2024-11-28 04:52:00,112 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:52:00,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:52:00,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:52:00,114 INFO L229 MonitoredProcess]: Starting monitored process 103 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:52:00,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2024-11-28 04:52:00,253 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:52:00,253 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:52:00,255 INFO L256 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-28 04:52:00,256 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:52:04,075 INFO L134 CoverageAnalysis]: Checked inductivity of 1405 backedges. 729 proven. 676 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:52:04,075 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:52:07,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1405 backedges. 729 proven. 676 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:52:07,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776480837] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:52:07,463 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:52:07,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 59, 59] total 144 [2024-11-28 04:52:07,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256342735] [2024-11-28 04:52:07,463 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:52:07,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 144 states [2024-11-28 04:52:07,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:52:07,465 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2024-11-28 04:52:07,465 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3779, Invalid=16813, Unknown=0, NotChecked=0, Total=20592 [2024-11-28 04:52:07,465 INFO L87 Difference]: Start difference. First operand 187 states and 191 transitions. Second operand has 144 states, 144 states have (on average 2.0208333333333335) internal successors, (291), 144 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:52:08,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:52:08,537 INFO L93 Difference]: Finished difference Result 254 states and 258 transitions. [2024-11-28 04:52:08,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-11-28 04:52:08,537 INFO L78 Accepts]: Start accepts. Automaton has has 144 states, 144 states have (on average 2.0208333333333335) internal successors, (291), 144 states have internal predecessors, (291), 0 states have call successors, (0), 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 123 [2024-11-28 04:52:08,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:52:08,538 INFO L225 Difference]: With dead ends: 254 [2024-11-28 04:52:08,538 INFO L226 Difference]: Without dead ends: 187 [2024-11-28 04:52:08,539 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 135 SyntacticMatches, 27 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15118 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=3850, Invalid=17320, Unknown=0, NotChecked=0, Total=21170 [2024-11-28 04:52:08,539 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 12 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 1051 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 1058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1051 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 04:52:08,539 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 128 Invalid, 1058 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1051 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 04:52:08,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2024-11-28 04:52:08,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 186. [2024-11-28 04:52:08,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 185 states have (on average 1.0216216216216216) internal successors, (189), 185 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:52:08,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 189 transitions. [2024-11-28 04:52:08,586 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 189 transitions. Word has length 123 [2024-11-28 04:52:08,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:52:08,586 INFO L471 AbstractCegarLoop]: Abstraction has 186 states and 189 transitions. [2024-11-28 04:52:08,587 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 144 states, 144 states have (on average 2.0208333333333335) internal successors, (291), 144 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:52:08,587 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 189 transitions. [2024-11-28 04:52:08,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-28 04:52:08,587 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:52:08,587 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:52:08,598 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Ended with exit code 0 [2024-11-28 04:52:08,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2024-11-28 04:52:08,788 INFO L396 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:52:08,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:52:08,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1636334246, now seen corresponding path program 53 times [2024-11-28 04:52:08,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:52:08,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27301866] [2024-11-28 04:52:08,788 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:52:08,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:52:08,809 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2024-11-28 04:52:08,810 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:52:11,209 INFO L134 CoverageAnalysis]: Checked inductivity of 1458 backedges. 729 proven. 729 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:52:11,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:52:11,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27301866] [2024-11-28 04:52:11,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27301866] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:52:11,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225898318] [2024-11-28 04:52:11,210 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:52:11,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:52:11,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:52:11,212 INFO L229 MonitoredProcess]: Starting monitored process 104 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:52:11,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2024-11-28 04:52:11,362 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2024-11-28 04:52:11,362 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:52:11,364 INFO L256 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-11-28 04:52:11,366 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:52:15,572 INFO L134 CoverageAnalysis]: Checked inductivity of 1458 backedges. 729 proven. 729 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:52:15,572 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:52:19,247 INFO L134 CoverageAnalysis]: Checked inductivity of 1458 backedges. 729 proven. 729 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:52:19,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [225898318] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:52:19,247 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:52:19,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62, 62] total 150 [2024-11-28 04:52:19,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549197379] [2024-11-28 04:52:19,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:52:19,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 150 states [2024-11-28 04:52:19,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:52:19,248 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 150 interpolants. [2024-11-28 04:52:19,249 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4023, Invalid=18327, Unknown=0, NotChecked=0, Total=22350 [2024-11-28 04:52:19,249 INFO L87 Difference]: Start difference. First operand 186 states and 189 transitions. Second operand has 150 states, 150 states have (on average 1.9866666666666666) internal successors, (298), 150 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:52:20,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:52:20,806 INFO L93 Difference]: Finished difference Result 259 states and 265 transitions. [2024-11-28 04:52:20,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-11-28 04:52:20,806 INFO L78 Accepts]: Start accepts. Automaton has has 150 states, 150 states have (on average 1.9866666666666666) internal successors, (298), 150 states have internal predecessors, (298), 0 states have call successors, (0), 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 125 [2024-11-28 04:52:20,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:52:20,807 INFO L225 Difference]: With dead ends: 259 [2024-11-28 04:52:20,807 INFO L226 Difference]: Without dead ends: 190 [2024-11-28 04:52:20,808 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 132 SyntacticMatches, 30 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16397 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=4070, Invalid=18882, Unknown=0, NotChecked=0, Total=22952 [2024-11-28 04:52:20,808 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 11 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 1631 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 1640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:52:20,808 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 196 Invalid, 1640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1631 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-28 04:52:20,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2024-11-28 04:52:20,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 189. [2024-11-28 04:52:20,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 1.0265957446808511) internal successors, (193), 188 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:52:20,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 193 transitions. [2024-11-28 04:52:20,864 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 193 transitions. Word has length 125 [2024-11-28 04:52:20,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:52:20,864 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 193 transitions. [2024-11-28 04:52:20,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 150 states, 150 states have (on average 1.9866666666666666) internal successors, (298), 150 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:52:20,864 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 193 transitions. [2024-11-28 04:52:20,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-28 04:52:20,865 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:52:20,865 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:52:20,873 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Ended with exit code 0 [2024-11-28 04:52:21,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,104 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:52:21,066 INFO L396 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:52:21,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:52:21,066 INFO L85 PathProgramCache]: Analyzing trace with hash 847108518, now seen corresponding path program 51 times [2024-11-28 04:52:21,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:52:21,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063571534] [2024-11-28 04:52:21,066 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:52:21,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:52:21,084 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2024-11-28 04:52:21,084 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:52:24,110 INFO L134 CoverageAnalysis]: Checked inductivity of 1458 backedges. 676 proven. 782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:52:24,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:52:24,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063571534] [2024-11-28 04:52:24,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063571534] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:52:24,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971214985] [2024-11-28 04:52:24,111 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:52:24,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:52:24,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:52:24,112 INFO L229 MonitoredProcess]: Starting monitored process 105 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:52:24,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2024-11-28 04:52:24,286 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2024-11-28 04:52:24,286 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:52:24,289 INFO L256 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-11-28 04:52:24,291 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:52:28,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1458 backedges. 729 proven. 729 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:52:28,119 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:52:31,650 INFO L134 CoverageAnalysis]: Checked inductivity of 1458 backedges. 729 proven. 729 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:52:31,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971214985] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:52:31,651 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:52:31,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62, 62] total 150 [2024-11-28 04:52:31,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403134595] [2024-11-28 04:52:31,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:52:31,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 150 states [2024-11-28 04:52:31,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:52:31,652 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 150 interpolants. [2024-11-28 04:52:31,653 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4046, Invalid=18304, Unknown=0, NotChecked=0, Total=22350 [2024-11-28 04:52:31,653 INFO L87 Difference]: Start difference. First operand 189 states and 193 transitions. Second operand has 150 states, 150 states have (on average 2.006666666666667) internal successors, (301), 150 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:52:32,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:52:32,510 INFO L93 Difference]: Finished difference Result 203 states and 208 transitions. [2024-11-28 04:52:32,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-11-28 04:52:32,511 INFO L78 Accepts]: Start accepts. Automaton has has 150 states, 150 states have (on average 2.006666666666667) internal successors, (301), 150 states have internal predecessors, (301), 0 states have call successors, (0), 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 125 [2024-11-28 04:52:32,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:52:32,512 INFO L225 Difference]: With dead ends: 203 [2024-11-28 04:52:32,512 INFO L226 Difference]: Without dead ends: 196 [2024-11-28 04:52:32,512 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 134 SyntacticMatches, 28 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16342 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=4169, Invalid=18783, Unknown=0, NotChecked=0, Total=22952 [2024-11-28 04:52:32,513 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 13 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 823 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:52:32,513 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 111 Invalid, 831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 823 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 04:52:32,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2024-11-28 04:52:32,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 191. [2024-11-28 04:52:32,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 190 states have (on average 1.0263157894736843) internal successors, (195), 190 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:52:32,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 195 transitions. [2024-11-28 04:52:32,571 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 195 transitions. Word has length 125 [2024-11-28 04:52:32,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:52:32,571 INFO L471 AbstractCegarLoop]: Abstraction has 191 states and 195 transitions. [2024-11-28 04:52:32,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 150 states, 150 states have (on average 2.006666666666667) internal successors, (301), 150 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:52:32,571 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 195 transitions. [2024-11-28 04:52:32,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-28 04:52:32,571 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:52:32,571 INFO L218 NwaCegarLoop]: trace histogram [28, 28, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:52:32,582 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Ended with exit code 0 [2024-11-28 04:52:32,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable109 [2024-11-28 04:52:32,772 INFO L396 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:52:32,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:52:32,772 INFO L85 PathProgramCache]: Analyzing trace with hash -213696734, now seen corresponding path program 54 times [2024-11-28 04:52:32,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:52:32,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275533167] [2024-11-28 04:52:32,773 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:52:32,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:52:32,790 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 29 check-sat command(s) [2024-11-28 04:52:32,791 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:52:35,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1513 backedges. 676 proven. 837 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:52:35,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:52:35,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275533167] [2024-11-28 04:52:35,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275533167] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:52:35,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978575670] [2024-11-28 04:52:35,801 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:52:35,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:52:35,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:52:35,802 INFO L229 MonitoredProcess]: Starting monitored process 106 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:52:35,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process [2024-11-28 04:52:35,965 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 29 check-sat command(s) [2024-11-28 04:52:35,965 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:52:35,967 INFO L256 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-28 04:52:35,970 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:52:39,670 INFO L134 CoverageAnalysis]: Checked inductivity of 1513 backedges. 729 proven. 784 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:52:39,670 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:52:43,188 INFO L134 CoverageAnalysis]: Checked inductivity of 1513 backedges. 784 proven. 729 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:52:43,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1978575670] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:52:43,188 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:52:43,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 61, 61] total 149 [2024-11-28 04:52:43,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444847669] [2024-11-28 04:52:43,189 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:52:43,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 149 states [2024-11-28 04:52:43,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:52:43,190 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2024-11-28 04:52:43,191 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4071, Invalid=17981, Unknown=0, NotChecked=0, Total=22052 [2024-11-28 04:52:43,191 INFO L87 Difference]: Start difference. First operand 191 states and 195 transitions. Second operand has 149 states, 149 states have (on average 2.033557046979866) internal successors, (303), 149 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:52:44,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:52:44,086 INFO L93 Difference]: Finished difference Result 264 states and 269 transitions. [2024-11-28 04:52:44,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2024-11-28 04:52:44,087 INFO L78 Accepts]: Start accepts. Automaton has has 149 states, 149 states have (on average 2.033557046979866) internal successors, (303), 149 states have internal predecessors, (303), 0 states have call successors, (0), 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 127 [2024-11-28 04:52:44,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:52:44,088 INFO L225 Difference]: With dead ends: 264 [2024-11-28 04:52:44,088 INFO L226 Difference]: Without dead ends: 257 [2024-11-28 04:52:44,089 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 139 SyntacticMatches, 28 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16285 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=4194, Invalid=18456, Unknown=0, NotChecked=0, Total=22650 [2024-11-28 04:52:44,089 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 21 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 873 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:52:44,089 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 155 Invalid, 881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 873 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 04:52:44,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2024-11-28 04:52:44,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 193. [2024-11-28 04:52:44,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 192 states have (on average 1.0260416666666667) internal successors, (197), 192 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:52:44,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 197 transitions. [2024-11-28 04:52:44,138 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 197 transitions. Word has length 127 [2024-11-28 04:52:44,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:52:44,138 INFO L471 AbstractCegarLoop]: Abstraction has 193 states and 197 transitions. [2024-11-28 04:52:44,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 149 states, 149 states have (on average 2.033557046979866) internal successors, (303), 149 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:52:44,138 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 197 transitions. [2024-11-28 04:52:44,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-28 04:52:44,139 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:52:44,139 INFO L218 NwaCegarLoop]: trace histogram [28, 28, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:52:44,149 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Ended with exit code 0 [2024-11-28 04:52:44,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable110 [2024-11-28 04:52:44,339 INFO L396 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:52:44,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:52:44,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1834718146, now seen corresponding path program 52 times [2024-11-28 04:52:44,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:52:44,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197054149] [2024-11-28 04:52:44,340 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:52:44,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:52:44,350 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:52:44,350 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:52:47,045 INFO L134 CoverageAnalysis]: Checked inductivity of 1513 backedges. 784 proven. 729 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:52:47,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:52:47,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197054149] [2024-11-28 04:52:47,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197054149] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:52:47,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197550115] [2024-11-28 04:52:47,045 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:52:47,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:52:47,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:52:47,047 INFO L229 MonitoredProcess]: Starting monitored process 107 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:52:47,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process [2024-11-28 04:52:47,193 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:52:47,193 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:52:47,195 INFO L256 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-28 04:52:47,196 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:52:51,442 INFO L134 CoverageAnalysis]: Checked inductivity of 1513 backedges. 784 proven. 729 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:52:51,442 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:52:55,771 INFO L134 CoverageAnalysis]: Checked inductivity of 1513 backedges. 784 proven. 729 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:52:55,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197550115] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:52:55,771 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:52:55,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61, 61] total 146 [2024-11-28 04:52:55,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166213677] [2024-11-28 04:52:55,771 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:52:55,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 146 states [2024-11-28 04:52:55,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:52:55,773 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2024-11-28 04:52:55,773 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3917, Invalid=17253, Unknown=0, NotChecked=0, Total=21170 [2024-11-28 04:52:55,774 INFO L87 Difference]: Start difference. First operand 193 states and 197 transitions. Second operand has 146 states, 146 states have (on average 2.0273972602739727) internal successors, (296), 146 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:52:56,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:52:56,741 INFO L93 Difference]: Finished difference Result 262 states and 266 transitions. [2024-11-28 04:52:56,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-11-28 04:52:56,741 INFO L78 Accepts]: Start accepts. Automaton has has 146 states, 146 states have (on average 2.0273972602739727) internal successors, (296), 146 states have internal predecessors, (296), 0 states have call successors, (0), 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 127 [2024-11-28 04:52:56,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:52:56,742 INFO L225 Difference]: With dead ends: 262 [2024-11-28 04:52:56,742 INFO L226 Difference]: Without dead ends: 193 [2024-11-28 04:52:56,743 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 139 SyntacticMatches, 30 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13083 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=3986, Invalid=17770, Unknown=0, NotChecked=0, Total=21756 [2024-11-28 04:52:56,743 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 11 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 965 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:52:56,743 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 123 Invalid, 971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 965 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 04:52:56,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2024-11-28 04:52:56,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 192. [2024-11-28 04:52:56,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 1.0209424083769634) internal successors, (195), 191 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:52:56,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 195 transitions. [2024-11-28 04:52:56,792 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 195 transitions. Word has length 127 [2024-11-28 04:52:56,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:52:56,792 INFO L471 AbstractCegarLoop]: Abstraction has 192 states and 195 transitions. [2024-11-28 04:52:56,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 146 states, 146 states have (on average 2.0273972602739727) internal successors, (296), 146 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:52:56,792 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 195 transitions. [2024-11-28 04:52:56,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-28 04:52:56,793 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:52:56,793 INFO L218 NwaCegarLoop]: trace histogram [28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:52:56,803 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Ended with exit code 0 [2024-11-28 04:52:56,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111,107 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:52:56,993 INFO L396 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:52:56,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:52:56,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1174725054, now seen corresponding path program 55 times [2024-11-28 04:52:56,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:52:56,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100694486] [2024-11-28 04:52:56,994 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:52:56,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:52:57,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:52:59,533 INFO L134 CoverageAnalysis]: Checked inductivity of 1568 backedges. 729 proven. 839 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:52:59,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:52:59,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100694486] [2024-11-28 04:52:59,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100694486] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:52:59,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561584113] [2024-11-28 04:52:59,533 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:52:59,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:52:59,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:52:59,535 INFO L229 MonitoredProcess]: Starting monitored process 108 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:52:59,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Waiting until timeout for monitored process [2024-11-28 04:52:59,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:52:59,683 INFO L256 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 65 conjuncts are in the unsatisfiable core [2024-11-28 04:52:59,685 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:53:04,067 INFO L134 CoverageAnalysis]: Checked inductivity of 1568 backedges. 784 proven. 784 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:53:04,067 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:53:07,901 INFO L134 CoverageAnalysis]: Checked inductivity of 1568 backedges. 784 proven. 784 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:53:07,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [561584113] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:53:07,901 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:53:07,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64, 64] total 156 [2024-11-28 04:53:07,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327457368] [2024-11-28 04:53:07,901 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:53:07,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 156 states [2024-11-28 04:53:07,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:53:07,903 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 156 interpolants. [2024-11-28 04:53:07,903 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4301, Invalid=19879, Unknown=0, NotChecked=0, Total=24180 [2024-11-28 04:53:07,904 INFO L87 Difference]: Start difference. First operand 192 states and 195 transitions. Second operand has 156 states, 156 states have (on average 1.9935897435897436) internal successors, (311), 156 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:53:09,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:53:09,311 INFO L93 Difference]: Finished difference Result 267 states and 273 transitions. [2024-11-28 04:53:09,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2024-11-28 04:53:09,311 INFO L78 Accepts]: Start accepts. Automaton has has 156 states, 156 states have (on average 1.9935897435897436) internal successors, (311), 156 states have internal predecessors, (311), 0 states have call successors, (0), 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 129 [2024-11-28 04:53:09,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:53:09,312 INFO L225 Difference]: With dead ends: 267 [2024-11-28 04:53:09,312 INFO L226 Difference]: Without dead ends: 196 [2024-11-28 04:53:09,313 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 136 SyntacticMatches, 30 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17780 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=4349, Invalid=20457, Unknown=0, NotChecked=0, Total=24806 [2024-11-28 04:53:09,313 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 8 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 1430 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 1435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 04:53:09,313 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 163 Invalid, 1435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1430 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 04:53:09,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2024-11-28 04:53:09,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 195. [2024-11-28 04:53:09,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 194 states have (on average 1.0257731958762886) internal successors, (199), 194 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:53:09,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 199 transitions. [2024-11-28 04:53:09,357 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 199 transitions. Word has length 129 [2024-11-28 04:53:09,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:53:09,358 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 199 transitions. [2024-11-28 04:53:09,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 156 states, 156 states have (on average 1.9935897435897436) internal successors, (311), 156 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:53:09,358 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 199 transitions. [2024-11-28 04:53:09,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-28 04:53:09,358 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:53:09,358 INFO L218 NwaCegarLoop]: trace histogram [28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:53:09,365 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Ended with exit code 0 [2024-11-28 04:53:09,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112,108 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:53:09,559 INFO L396 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:53:09,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:53:09,559 INFO L85 PathProgramCache]: Analyzing trace with hash 2071406910, now seen corresponding path program 53 times [2024-11-28 04:53:09,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:53:09,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14255060] [2024-11-28 04:53:09,559 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:53:09,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:53:09,581 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 29 check-sat command(s) [2024-11-28 04:53:09,581 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:53:12,606 INFO L134 CoverageAnalysis]: Checked inductivity of 1568 backedges. 784 proven. 784 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:53:12,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:53:12,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14255060] [2024-11-28 04:53:12,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14255060] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:53:12,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724212861] [2024-11-28 04:53:12,606 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:53:12,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:53:12,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:53:12,608 INFO L229 MonitoredProcess]: Starting monitored process 109 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:53:12,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Waiting until timeout for monitored process [2024-11-28 04:53:12,762 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 29 check-sat command(s) [2024-11-28 04:53:12,762 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:53:12,764 INFO L256 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 65 conjuncts are in the unsatisfiable core [2024-11-28 04:53:12,766 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:53:18,826 INFO L134 CoverageAnalysis]: Checked inductivity of 1568 backedges. 784 proven. 784 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:53:18,826 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:53:23,481 INFO L134 CoverageAnalysis]: Checked inductivity of 1568 backedges. 784 proven. 784 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:53:23,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1724212861] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:53:23,481 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:53:23,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64, 64] total 153 [2024-11-28 04:53:23,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260077438] [2024-11-28 04:53:23,482 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:53:23,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 153 states [2024-11-28 04:53:23,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:53:23,483 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 153 interpolants. [2024-11-28 04:53:23,484 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4196, Invalid=19060, Unknown=0, NotChecked=0, Total=23256 [2024-11-28 04:53:23,484 INFO L87 Difference]: Start difference. First operand 195 states and 199 transitions. Second operand has 153 states, 153 states have (on average 2.0065359477124183) internal successors, (307), 153 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:53:24,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:53:24,507 INFO L93 Difference]: Finished difference Result 209 states and 214 transitions. [2024-11-28 04:53:24,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2024-11-28 04:53:24,508 INFO L78 Accepts]: Start accepts. Automaton has has 153 states, 153 states have (on average 2.0065359477124183) internal successors, (307), 153 states have internal predecessors, (307), 0 states have call successors, (0), 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 129 [2024-11-28 04:53:24,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:53:24,509 INFO L225 Difference]: With dead ends: 209 [2024-11-28 04:53:24,509 INFO L226 Difference]: Without dead ends: 202 [2024-11-28 04:53:24,509 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 138 SyntacticMatches, 31 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14352 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=4322, Invalid=19548, Unknown=0, NotChecked=0, Total=23870 [2024-11-28 04:53:24,510 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 9 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 915 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 04:53:24,510 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 117 Invalid, 923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 915 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 04:53:24,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2024-11-28 04:53:24,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 197. [2024-11-28 04:53:24,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 196 states have (on average 1.0255102040816326) internal successors, (201), 196 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:53:24,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 201 transitions. [2024-11-28 04:53:24,567 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 201 transitions. Word has length 129 [2024-11-28 04:53:24,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:53:24,567 INFO L471 AbstractCegarLoop]: Abstraction has 197 states and 201 transitions. [2024-11-28 04:53:24,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 153 states, 153 states have (on average 2.0065359477124183) internal successors, (307), 153 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:53:24,568 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 201 transitions. [2024-11-28 04:53:24,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-28 04:53:24,568 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:53:24,568 INFO L218 NwaCegarLoop]: trace histogram [29, 29, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:53:24,580 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Ended with exit code 0 [2024-11-28 04:53:24,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 109 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable113 [2024-11-28 04:53:24,769 INFO L396 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:53:24,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:53:24,769 INFO L85 PathProgramCache]: Analyzing trace with hash 999360570, now seen corresponding path program 56 times [2024-11-28 04:53:24,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:53:24,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670443498] [2024-11-28 04:53:24,769 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:53:24,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:53:24,785 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:53:24,785 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:53:28,369 INFO L134 CoverageAnalysis]: Checked inductivity of 1625 backedges. 729 proven. 896 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:53:28,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:53:28,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670443498] [2024-11-28 04:53:28,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670443498] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:53:28,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466779031] [2024-11-28 04:53:28,369 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:53:28,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:53:28,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:53:28,371 INFO L229 MonitoredProcess]: Starting monitored process 110 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:53:28,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Waiting until timeout for monitored process [2024-11-28 04:53:28,527 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:53:28,527 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:53:28,529 INFO L256 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-28 04:53:28,532 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:53:32,688 INFO L134 CoverageAnalysis]: Checked inductivity of 1625 backedges. 784 proven. 841 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:53:32,688 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:53:36,636 INFO L134 CoverageAnalysis]: Checked inductivity of 1625 backedges. 841 proven. 784 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:53:36,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466779031] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:53:36,637 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:53:36,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 63, 63] total 154 [2024-11-28 04:53:36,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660377006] [2024-11-28 04:53:36,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:53:36,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 154 states [2024-11-28 04:53:36,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:53:36,638 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 154 interpolants. [2024-11-28 04:53:36,639 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4346, Invalid=19216, Unknown=0, NotChecked=0, Total=23562 [2024-11-28 04:53:36,639 INFO L87 Difference]: Start difference. First operand 197 states and 201 transitions. Second operand has 154 states, 154 states have (on average 2.0324675324675323) internal successors, (313), 154 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:53:37,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:53:37,788 INFO L93 Difference]: Finished difference Result 272 states and 277 transitions. [2024-11-28 04:53:37,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2024-11-28 04:53:37,788 INFO L78 Accepts]: Start accepts. Automaton has has 154 states, 154 states have (on average 2.0324675324675323) internal successors, (313), 154 states have internal predecessors, (313), 0 states have call successors, (0), 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 131 [2024-11-28 04:53:37,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:53:37,789 INFO L225 Difference]: With dead ends: 272 [2024-11-28 04:53:37,789 INFO L226 Difference]: Without dead ends: 265 [2024-11-28 04:53:37,790 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 143 SyntacticMatches, 29 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17432 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=4473, Invalid=19707, Unknown=0, NotChecked=0, Total=24180 [2024-11-28 04:53:37,790 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 18 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 1374 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 1381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 04:53:37,790 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 178 Invalid, 1381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1374 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 04:53:37,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2024-11-28 04:53:37,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 199. [2024-11-28 04:53:37,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 198 states have (on average 1.0252525252525253) internal successors, (203), 198 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:53:37,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 203 transitions. [2024-11-28 04:53:37,846 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 203 transitions. Word has length 131 [2024-11-28 04:53:37,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:53:37,846 INFO L471 AbstractCegarLoop]: Abstraction has 199 states and 203 transitions. [2024-11-28 04:53:37,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 154 states, 154 states have (on average 2.0324675324675323) internal successors, (313), 154 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:53:37,846 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 203 transitions. [2024-11-28 04:53:37,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-28 04:53:37,847 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:53:37,847 INFO L218 NwaCegarLoop]: trace histogram [29, 29, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:53:37,858 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Forceful destruction successful, exit code 0 [2024-11-28 04:53:38,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2024-11-28 04:53:38,047 INFO L396 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:53:38,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:53:38,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1564433754, now seen corresponding path program 54 times [2024-11-28 04:53:38,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:53:38,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762110074] [2024-11-28 04:53:38,048 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:53:38,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:53:38,070 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 30 check-sat command(s) [2024-11-28 04:53:38,070 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:53:40,844 INFO L134 CoverageAnalysis]: Checked inductivity of 1625 backedges. 786 proven. 839 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:53:40,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:53:40,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762110074] [2024-11-28 04:53:40,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762110074] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:53:40,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934002866] [2024-11-28 04:53:40,845 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:53:40,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:53:40,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:53:40,847 INFO L229 MonitoredProcess]: Starting monitored process 111 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:53:40,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Waiting until timeout for monitored process [2024-11-28 04:53:41,031 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 30 check-sat command(s) [2024-11-28 04:53:41,032 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:53:41,034 INFO L256 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-28 04:53:41,036 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:53:45,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1625 backedges. 841 proven. 784 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:53:45,787 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:53:49,749 INFO L134 CoverageAnalysis]: Checked inductivity of 1625 backedges. 841 proven. 784 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:53:49,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1934002866] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:53:49,750 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:53:49,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 63, 63] total 154 [2024-11-28 04:53:49,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689549722] [2024-11-28 04:53:49,750 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:53:49,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 154 states [2024-11-28 04:53:49,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:53:49,751 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 154 interpolants. [2024-11-28 04:53:49,752 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4318, Invalid=19244, Unknown=0, NotChecked=0, Total=23562 [2024-11-28 04:53:49,753 INFO L87 Difference]: Start difference. First operand 199 states and 203 transitions. Second operand has 154 states, 154 states have (on average 2.0194805194805197) internal successors, (311), 154 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:53:51,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:53:51,215 INFO L93 Difference]: Finished difference Result 270 states and 274 transitions. [2024-11-28 04:53:51,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2024-11-28 04:53:51,215 INFO L78 Accepts]: Start accepts. Automaton has has 154 states, 154 states have (on average 2.0194805194805197) internal successors, (311), 154 states have internal predecessors, (311), 0 states have call successors, (0), 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 131 [2024-11-28 04:53:51,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:53:51,217 INFO L225 Difference]: With dead ends: 270 [2024-11-28 04:53:51,217 INFO L226 Difference]: Without dead ends: 199 [2024-11-28 04:53:51,218 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 144 SyntacticMatches, 28 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17279 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=4393, Invalid=19787, Unknown=0, NotChecked=0, Total=24180 [2024-11-28 04:53:51,218 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 9 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 1348 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 1351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 04:53:51,218 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 169 Invalid, 1351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1348 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 04:53:51,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2024-11-28 04:53:51,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 198. [2024-11-28 04:53:51,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 1.0203045685279188) internal successors, (201), 197 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:53:51,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 201 transitions. [2024-11-28 04:53:51,311 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 201 transitions. Word has length 131 [2024-11-28 04:53:51,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:53:51,311 INFO L471 AbstractCegarLoop]: Abstraction has 198 states and 201 transitions. [2024-11-28 04:53:51,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 154 states, 154 states have (on average 2.0194805194805197) internal successors, (311), 154 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:53:51,311 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 201 transitions. [2024-11-28 04:53:51,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-28 04:53:51,311 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:53:51,311 INFO L218 NwaCegarLoop]: trace histogram [29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:53:51,321 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Ended with exit code 0 [2024-11-28 04:53:51,512 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115,111 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:53:51,512 INFO L396 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:53:51,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:53:51,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1308310314, now seen corresponding path program 57 times [2024-11-28 04:53:51,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:53:51,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770077860] [2024-11-28 04:53:51,512 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:53:51,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:53:51,529 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2024-11-28 04:53:51,529 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:53:54,401 INFO L134 CoverageAnalysis]: Checked inductivity of 1682 backedges. 784 proven. 898 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:53:54,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:53:54,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770077860] [2024-11-28 04:53:54,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770077860] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:53:54,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980885748] [2024-11-28 04:53:54,401 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:53:54,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:53:54,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:53:54,403 INFO L229 MonitoredProcess]: Starting monitored process 112 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:53:54,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Waiting until timeout for monitored process [2024-11-28 04:53:54,587 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2024-11-28 04:53:54,587 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:53:54,590 INFO L256 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-11-28 04:53:54,592 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:53:59,464 INFO L134 CoverageAnalysis]: Checked inductivity of 1682 backedges. 841 proven. 841 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:53:59,464 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:54:03,628 INFO L134 CoverageAnalysis]: Checked inductivity of 1682 backedges. 841 proven. 841 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:54:03,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [980885748] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:54:03,629 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:54:03,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66, 66] total 161 [2024-11-28 04:54:03,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789896170] [2024-11-28 04:54:03,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:54:03,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 161 states [2024-11-28 04:54:03,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:54:03,631 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 161 interpolants. [2024-11-28 04:54:03,632 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4583, Invalid=21177, Unknown=0, NotChecked=0, Total=25760 [2024-11-28 04:54:03,632 INFO L87 Difference]: Start difference. First operand 198 states and 201 transitions. Second operand has 161 states, 161 states have (on average 1.9937888198757765) internal successors, (321), 161 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:54:04,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:54:04,657 INFO L93 Difference]: Finished difference Result 275 states and 281 transitions. [2024-11-28 04:54:04,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2024-11-28 04:54:04,658 INFO L78 Accepts]: Start accepts. Automaton has has 161 states, 161 states have (on average 1.9937888198757765) internal successors, (321), 161 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2024-11-28 04:54:04,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:54:04,659 INFO L225 Difference]: With dead ends: 275 [2024-11-28 04:54:04,659 INFO L226 Difference]: Without dead ends: 202 [2024-11-28 04:54:04,659 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 141 SyntacticMatches, 30 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18886 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=4632, Invalid=21774, Unknown=0, NotChecked=0, Total=26406 [2024-11-28 04:54:04,660 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 13 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 871 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:54:04,660 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 126 Invalid, 880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 871 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 04:54:04,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2024-11-28 04:54:04,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 201. [2024-11-28 04:54:04,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 200 states have (on average 1.025) internal successors, (205), 200 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:54:04,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 205 transitions. [2024-11-28 04:54:04,749 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 205 transitions. Word has length 133 [2024-11-28 04:54:04,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:54:04,749 INFO L471 AbstractCegarLoop]: Abstraction has 201 states and 205 transitions. [2024-11-28 04:54:04,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 161 states, 161 states have (on average 1.9937888198757765) internal successors, (321), 161 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:54:04,749 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 205 transitions. [2024-11-28 04:54:04,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-28 04:54:04,750 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:54:04,750 INFO L218 NwaCegarLoop]: trace histogram [29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:54:04,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Forceful destruction successful, exit code 0 [2024-11-28 04:54:04,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable116 [2024-11-28 04:54:04,950 INFO L396 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:54:04,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:54:04,951 INFO L85 PathProgramCache]: Analyzing trace with hash 542889174, now seen corresponding path program 55 times [2024-11-28 04:54:04,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:54:04,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231687486] [2024-11-28 04:54:04,951 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:54:04,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:54:04,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:54:08,333 INFO L134 CoverageAnalysis]: Checked inductivity of 1682 backedges. 784 proven. 898 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:54:08,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:54:08,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231687486] [2024-11-28 04:54:08,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231687486] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:54:08,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233676643] [2024-11-28 04:54:08,334 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:54:08,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:54:08,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:54:08,336 INFO L229 MonitoredProcess]: Starting monitored process 113 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:54:08,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Waiting until timeout for monitored process [2024-11-28 04:54:08,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:54:08,490 INFO L256 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-11-28 04:54:08,491 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:54:13,080 INFO L134 CoverageAnalysis]: Checked inductivity of 1682 backedges. 841 proven. 841 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:54:13,081 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:54:17,410 INFO L134 CoverageAnalysis]: Checked inductivity of 1682 backedges. 841 proven. 841 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:54:17,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1233676643] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:54:17,410 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:54:17,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66, 66] total 160 [2024-11-28 04:54:17,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378008621] [2024-11-28 04:54:17,411 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:54:17,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 160 states [2024-11-28 04:54:17,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:54:17,412 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 160 interpolants. [2024-11-28 04:54:17,414 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4603, Invalid=20837, Unknown=0, NotChecked=0, Total=25440 [2024-11-28 04:54:17,414 INFO L87 Difference]: Start difference. First operand 201 states and 205 transitions. Second operand has 160 states, 160 states have (on average 2.00625) internal successors, (321), 160 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:54:18,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:54:18,357 INFO L93 Difference]: Finished difference Result 215 states and 220 transitions. [2024-11-28 04:54:18,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2024-11-28 04:54:18,358 INFO L78 Accepts]: Start accepts. Automaton has has 160 states, 160 states have (on average 2.00625) internal successors, (321), 160 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2024-11-28 04:54:18,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:54:18,358 INFO L225 Difference]: With dead ends: 215 [2024-11-28 04:54:18,358 INFO L226 Difference]: Without dead ends: 208 [2024-11-28 04:54:18,359 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 142 SyntacticMatches, 30 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18679 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=4734, Invalid=21348, Unknown=0, NotChecked=0, Total=26082 [2024-11-28 04:54:18,359 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 12 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 753 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:54:18,360 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 75 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 753 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 04:54:18,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2024-11-28 04:54:18,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 203. [2024-11-28 04:54:18,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 202 states have (on average 1.0247524752475248) internal successors, (207), 202 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:54:18,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 207 transitions. [2024-11-28 04:54:18,420 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 207 transitions. Word has length 133 [2024-11-28 04:54:18,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:54:18,421 INFO L471 AbstractCegarLoop]: Abstraction has 203 states and 207 transitions. [2024-11-28 04:54:18,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 160 states, 160 states have (on average 2.00625) internal successors, (321), 160 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:54:18,421 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 207 transitions. [2024-11-28 04:54:18,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-28 04:54:18,421 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:54:18,421 INFO L218 NwaCegarLoop]: trace histogram [30, 30, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:54:18,433 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Ended with exit code 0 [2024-11-28 04:54:18,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable117 [2024-11-28 04:54:18,622 INFO L396 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:54:18,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:54:18,622 INFO L85 PathProgramCache]: Analyzing trace with hash 534859090, now seen corresponding path program 58 times [2024-11-28 04:54:18,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:54:18,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306269482] [2024-11-28 04:54:18,622 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:54:18,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:54:18,634 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:54:18,635 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:54:21,529 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 841 proven. 900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:54:21,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:54:21,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306269482] [2024-11-28 04:54:21,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306269482] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:54:21,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276076127] [2024-11-28 04:54:21,529 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:54:21,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:54:21,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:54:21,531 INFO L229 MonitoredProcess]: Starting monitored process 114 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:54:21,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Waiting until timeout for monitored process [2024-11-28 04:54:21,671 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:54:21,672 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:54:21,673 INFO L256 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-11-28 04:54:21,675 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:54:27,026 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 841 proven. 900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:54:27,026 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:54:31,470 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 900 proven. 841 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:54:31,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276076127] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:54:31,471 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:54:31,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65, 65] total 156 [2024-11-28 04:54:31,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759035653] [2024-11-28 04:54:31,471 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:54:31,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 156 states [2024-11-28 04:54:31,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:54:31,472 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 156 interpolants. [2024-11-28 04:54:31,473 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4466, Invalid=19714, Unknown=0, NotChecked=0, Total=24180 [2024-11-28 04:54:31,473 INFO L87 Difference]: Start difference. First operand 203 states and 207 transitions. Second operand has 156 states, 156 states have (on average 2.0256410256410255) internal successors, (316), 156 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:54:32,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:54:32,982 INFO L93 Difference]: Finished difference Result 280 states and 285 transitions. [2024-11-28 04:54:32,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2024-11-28 04:54:32,982 INFO L78 Accepts]: Start accepts. Automaton has has 156 states, 156 states have (on average 2.0256410256410255) internal successors, (316), 156 states have internal predecessors, (316), 0 states have call successors, (0), 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 135 [2024-11-28 04:54:32,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:54:32,983 INFO L225 Difference]: With dead ends: 280 [2024-11-28 04:54:32,983 INFO L226 Difference]: Without dead ends: 273 [2024-11-28 04:54:32,984 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 147 SyntacticMatches, 32 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15009 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=4595, Invalid=20211, Unknown=0, NotChecked=0, Total=24806 [2024-11-28 04:54:32,984 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 18 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 1588 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 1592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:54:32,984 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 267 Invalid, 1592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1588 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-28 04:54:32,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2024-11-28 04:54:33,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 205. [2024-11-28 04:54:33,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 204 states have (on average 1.0245098039215685) internal successors, (209), 204 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:54:33,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 209 transitions. [2024-11-28 04:54:33,046 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 209 transitions. Word has length 135 [2024-11-28 04:54:33,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:54:33,047 INFO L471 AbstractCegarLoop]: Abstraction has 205 states and 209 transitions. [2024-11-28 04:54:33,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 156 states, 156 states have (on average 2.0256410256410255) internal successors, (316), 156 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:54:33,047 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 209 transitions. [2024-11-28 04:54:33,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-28 04:54:33,047 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:54:33,047 INFO L218 NwaCegarLoop]: trace histogram [30, 30, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:54:33,056 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Ended with exit code 0 [2024-11-28 04:54:33,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 114 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2024-11-28 04:54:33,248 INFO L396 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:54:33,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:54:33,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1537704690, now seen corresponding path program 56 times [2024-11-28 04:54:33,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:54:33,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706621341] [2024-11-28 04:54:33,248 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:54:33,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:54:33,262 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:54:33,262 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:54:35,819 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 843 proven. 898 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:54:35,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:54:35,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706621341] [2024-11-28 04:54:35,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706621341] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:54:35,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415242983] [2024-11-28 04:54:35,819 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:54:35,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:54:35,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:54:35,821 INFO L229 MonitoredProcess]: Starting monitored process 115 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:54:35,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Waiting until timeout for monitored process [2024-11-28 04:54:35,986 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:54:35,986 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:54:35,988 INFO L256 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-11-28 04:54:35,990 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:54:40,990 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 900 proven. 841 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:54:40,990 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:54:45,358 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 900 proven. 841 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:54:45,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415242983] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:54:45,358 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:54:45,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 65, 65] total 159 [2024-11-28 04:54:45,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532795188] [2024-11-28 04:54:45,358 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:54:45,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 159 states [2024-11-28 04:54:45,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:54:45,361 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 159 interpolants. [2024-11-28 04:54:45,362 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4601, Invalid=20521, Unknown=0, NotChecked=0, Total=25122 [2024-11-28 04:54:45,363 INFO L87 Difference]: Start difference. First operand 205 states and 209 transitions. Second operand has 159 states, 159 states have (on average 2.018867924528302) internal successors, (321), 159 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:54:46,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:54:46,778 INFO L93 Difference]: Finished difference Result 278 states and 282 transitions. [2024-11-28 04:54:46,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2024-11-28 04:54:46,779 INFO L78 Accepts]: Start accepts. Automaton has has 159 states, 159 states have (on average 2.018867924528302) internal successors, (321), 159 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2024-11-28 04:54:46,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:54:46,780 INFO L225 Difference]: With dead ends: 278 [2024-11-28 04:54:46,780 INFO L226 Difference]: Without dead ends: 205 [2024-11-28 04:54:46,781 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 147 SyntacticMatches, 30 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18553 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=4678, Invalid=21082, Unknown=0, NotChecked=0, Total=25760 [2024-11-28 04:54:46,782 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 12 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 1029 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 1034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 04:54:46,782 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 120 Invalid, 1034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1029 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 04:54:46,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2024-11-28 04:54:46,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 204. [2024-11-28 04:54:46,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 203 states have (on average 1.019704433497537) internal successors, (207), 203 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:54:46,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 207 transitions. [2024-11-28 04:54:46,845 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 207 transitions. Word has length 135 [2024-11-28 04:54:46,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:54:46,845 INFO L471 AbstractCegarLoop]: Abstraction has 204 states and 207 transitions. [2024-11-28 04:54:46,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 159 states, 159 states have (on average 2.018867924528302) internal successors, (321), 159 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:54:46,845 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 207 transitions. [2024-11-28 04:54:46,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-11-28 04:54:46,846 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:54:46,846 INFO L218 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:54:46,857 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Forceful destruction successful, exit code 0 [2024-11-28 04:54:47,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,115 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:54:47,046 INFO L396 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:54:47,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:54:47,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1017633810, now seen corresponding path program 59 times [2024-11-28 04:54:47,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:54:47,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129398232] [2024-11-28 04:54:47,047 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:54:47,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:54:47,064 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2024-11-28 04:54:47,065 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:54:50,400 INFO L134 CoverageAnalysis]: Checked inductivity of 1800 backedges. 900 proven. 900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:54:50,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:54:50,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129398232] [2024-11-28 04:54:50,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129398232] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:54:50,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806908308] [2024-11-28 04:54:50,401 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:54:50,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:54:50,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:54:50,403 INFO L229 MonitoredProcess]: Starting monitored process 116 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:54:50,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Waiting until timeout for monitored process [2024-11-28 04:54:50,594 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2024-11-28 04:54:50,594 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:54:50,596 INFO L256 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 69 conjuncts are in the unsatisfiable core [2024-11-28 04:54:50,598 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:54:56,274 INFO L134 CoverageAnalysis]: Checked inductivity of 1800 backedges. 900 proven. 900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:54:56,274 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:55:01,108 INFO L134 CoverageAnalysis]: Checked inductivity of 1800 backedges. 900 proven. 900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:55:01,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806908308] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:55:01,108 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:55:01,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68, 68] total 165 [2024-11-28 04:55:01,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274787057] [2024-11-28 04:55:01,108 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:55:01,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 165 states [2024-11-28 04:55:01,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:55:01,110 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 165 interpolants. [2024-11-28 04:55:01,111 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4869, Invalid=22191, Unknown=0, NotChecked=0, Total=27060 [2024-11-28 04:55:01,112 INFO L87 Difference]: Start difference. First operand 204 states and 207 transitions. Second operand has 165 states, 165 states have (on average 1.9878787878787878) internal successors, (328), 165 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:55:02,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:55:02,822 INFO L93 Difference]: Finished difference Result 283 states and 289 transitions. [2024-11-28 04:55:02,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2024-11-28 04:55:02,823 INFO L78 Accepts]: Start accepts. Automaton has has 165 states, 165 states have (on average 1.9878787878787878) internal successors, (328), 165 states have internal predecessors, (328), 0 states have call successors, (0), 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 137 [2024-11-28 04:55:02,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:55:02,824 INFO L225 Difference]: With dead ends: 283 [2024-11-28 04:55:02,824 INFO L226 Difference]: Without dead ends: 208 [2024-11-28 04:55:02,825 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 145 SyntacticMatches, 32 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19873 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=4919, Invalid=22803, Unknown=0, NotChecked=0, Total=27722 [2024-11-28 04:55:02,825 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 8 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 1416 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 1423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:55:02,825 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 179 Invalid, 1423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1416 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 04:55:02,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2024-11-28 04:55:02,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 207. [2024-11-28 04:55:02,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.0242718446601942) internal successors, (211), 206 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:55:02,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 211 transitions. [2024-11-28 04:55:02,889 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 211 transitions. Word has length 137 [2024-11-28 04:55:02,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:55:02,889 INFO L471 AbstractCegarLoop]: Abstraction has 207 states and 211 transitions. [2024-11-28 04:55:02,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 165 states, 165 states have (on average 1.9878787878787878) internal successors, (328), 165 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:55:02,889 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 211 transitions. [2024-11-28 04:55:02,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-11-28 04:55:02,890 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:55:02,890 INFO L218 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:55:02,899 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Ended with exit code 0 [2024-11-28 04:55:03,090 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,116 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:55:03,090 INFO L396 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:55:03,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:55:03,091 INFO L85 PathProgramCache]: Analyzing trace with hash -997991314, now seen corresponding path program 57 times [2024-11-28 04:55:03,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:55:03,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722274027] [2024-11-28 04:55:03,091 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:55:03,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:55:03,111 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 31 check-sat command(s) [2024-11-28 04:55:03,111 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:55:07,167 INFO L134 CoverageAnalysis]: Checked inductivity of 1800 backedges. 841 proven. 959 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:55:07,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:55:07,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722274027] [2024-11-28 04:55:07,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722274027] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:55:07,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527124954] [2024-11-28 04:55:07,168 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:55:07,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:55:07,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:55:07,171 INFO L229 MonitoredProcess]: Starting monitored process 117 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:55:07,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Waiting until timeout for monitored process [2024-11-28 04:55:07,385 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 31 check-sat command(s) [2024-11-28 04:55:07,385 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:55:07,388 INFO L256 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 69 conjuncts are in the unsatisfiable core [2024-11-28 04:55:07,390 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:55:12,788 INFO L134 CoverageAnalysis]: Checked inductivity of 1800 backedges. 900 proven. 900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:55:12,788 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:55:17,532 INFO L134 CoverageAnalysis]: Checked inductivity of 1800 backedges. 900 proven. 900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:55:17,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527124954] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:55:17,533 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:55:17,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68, 68] total 165 [2024-11-28 04:55:17,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588064176] [2024-11-28 04:55:17,533 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:55:17,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 165 states [2024-11-28 04:55:17,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:55:17,535 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 165 interpolants. [2024-11-28 04:55:17,536 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4895, Invalid=22165, Unknown=0, NotChecked=0, Total=27060 [2024-11-28 04:55:17,537 INFO L87 Difference]: Start difference. First operand 207 states and 211 transitions. Second operand has 165 states, 165 states have (on average 2.006060606060606) internal successors, (331), 165 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:55:19,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:55:19,244 INFO L93 Difference]: Finished difference Result 221 states and 226 transitions. [2024-11-28 04:55:19,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2024-11-28 04:55:19,245 INFO L78 Accepts]: Start accepts. Automaton has has 165 states, 165 states have (on average 2.006060606060606) internal successors, (331), 165 states have internal predecessors, (331), 0 states have call successors, (0), 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 137 [2024-11-28 04:55:19,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:55:19,246 INFO L225 Difference]: With dead ends: 221 [2024-11-28 04:55:19,246 INFO L226 Difference]: Without dead ends: 214 [2024-11-28 04:55:19,247 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 146 SyntacticMatches, 31 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19906 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=5030, Invalid=22692, Unknown=0, NotChecked=0, Total=27722 [2024-11-28 04:55:19,247 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 9 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 1637 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 1643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:55:19,247 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 161 Invalid, 1643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1637 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-28 04:55:19,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2024-11-28 04:55:19,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 209. [2024-11-28 04:55:19,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 208 states have (on average 1.0240384615384615) internal successors, (213), 208 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:55:19,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 213 transitions. [2024-11-28 04:55:19,314 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 213 transitions. Word has length 137 [2024-11-28 04:55:19,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:55:19,314 INFO L471 AbstractCegarLoop]: Abstraction has 209 states and 213 transitions. [2024-11-28 04:55:19,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 165 states, 165 states have (on average 2.006060606060606) internal successors, (331), 165 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:55:19,315 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 213 transitions. [2024-11-28 04:55:19,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-28 04:55:19,315 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:55:19,315 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:55:19,328 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Ended with exit code 0 [2024-11-28 04:55:19,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,117 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:55:19,516 INFO L396 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:55:19,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:55:19,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1719930474, now seen corresponding path program 60 times [2024-11-28 04:55:19,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:55:19,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334344901] [2024-11-28 04:55:19,517 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:55:19,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:55:19,535 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 32 check-sat command(s) [2024-11-28 04:55:19,535 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:55:23,641 INFO L134 CoverageAnalysis]: Checked inductivity of 1861 backedges. 841 proven. 1020 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:55:23,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:55:23,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334344901] [2024-11-28 04:55:23,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334344901] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:55:23,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462327041] [2024-11-28 04:55:23,641 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:55:23,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:55:23,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:55:23,643 INFO L229 MonitoredProcess]: Starting monitored process 118 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:55:23,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Waiting until timeout for monitored process [2024-11-28 04:55:23,857 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 32 check-sat command(s) [2024-11-28 04:55:23,857 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:55:23,860 INFO L256 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-11-28 04:55:23,862 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:55:28,981 INFO L134 CoverageAnalysis]: Checked inductivity of 1861 backedges. 900 proven. 961 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:55:28,981 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:55:33,845 INFO L134 CoverageAnalysis]: Checked inductivity of 1861 backedges. 961 proven. 900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:55:33,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462327041] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:55:33,845 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:55:33,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 67, 67] total 164 [2024-11-28 04:55:33,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717727781] [2024-11-28 04:55:33,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:55:33,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 164 states [2024-11-28 04:55:33,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:55:33,847 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 164 interpolants. [2024-11-28 04:55:33,848 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4923, Invalid=21809, Unknown=0, NotChecked=0, Total=26732 [2024-11-28 04:55:33,848 INFO L87 Difference]: Start difference. First operand 209 states and 213 transitions. Second operand has 164 states, 164 states have (on average 2.0304878048780486) internal successors, (333), 164 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:55:35,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:55:35,138 INFO L93 Difference]: Finished difference Result 288 states and 293 transitions. [2024-11-28 04:55:35,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2024-11-28 04:55:35,138 INFO L78 Accepts]: Start accepts. Automaton has has 164 states, 164 states have (on average 2.0304878048780486) internal successors, (333), 164 states have internal predecessors, (333), 0 states have call successors, (0), 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 139 [2024-11-28 04:55:35,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:55:35,139 INFO L225 Difference]: With dead ends: 288 [2024-11-28 04:55:35,139 INFO L226 Difference]: Without dead ends: 281 [2024-11-28 04:55:35,140 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 151 SyntacticMatches, 31 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19843 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=5058, Invalid=22332, Unknown=0, NotChecked=0, Total=27390 [2024-11-28 04:55:35,140 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 13 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 1176 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 1183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 04:55:35,140 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 137 Invalid, 1183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1176 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 04:55:35,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2024-11-28 04:55:35,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 211. [2024-11-28 04:55:35,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 210 states have (on average 1.0238095238095237) internal successors, (215), 210 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:55:35,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 215 transitions. [2024-11-28 04:55:35,221 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 215 transitions. Word has length 139 [2024-11-28 04:55:35,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:55:35,221 INFO L471 AbstractCegarLoop]: Abstraction has 211 states and 215 transitions. [2024-11-28 04:55:35,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 164 states, 164 states have (on average 2.0304878048780486) internal successors, (333), 164 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:55:35,222 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 215 transitions. [2024-11-28 04:55:35,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-28 04:55:35,222 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:55:35,222 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:55:35,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Forceful destruction successful, exit code 0 [2024-11-28 04:55:35,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 118 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2024-11-28 04:55:35,423 INFO L396 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:55:35,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:55:35,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1779694454, now seen corresponding path program 58 times [2024-11-28 04:55:35,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:55:35,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777670134] [2024-11-28 04:55:35,423 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:55:35,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:55:35,436 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:55:35,436 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:55:38,649 INFO L134 CoverageAnalysis]: Checked inductivity of 1861 backedges. 961 proven. 900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:55:38,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:55:38,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777670134] [2024-11-28 04:55:38,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777670134] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:55:38,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57634000] [2024-11-28 04:55:38,650 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:55:38,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:55:38,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:55:38,652 INFO L229 MonitoredProcess]: Starting monitored process 119 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:55:38,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Waiting until timeout for monitored process [2024-11-28 04:55:38,833 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:55:38,833 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:55:38,835 INFO L256 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-11-28 04:55:38,838 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:55:44,208 INFO L134 CoverageAnalysis]: Checked inductivity of 1861 backedges. 961 proven. 900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:55:44,209 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:55:48,921 INFO L134 CoverageAnalysis]: Checked inductivity of 1861 backedges. 961 proven. 900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:55:48,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57634000] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:55:48,921 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:55:48,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 67, 67] total 163 [2024-11-28 04:55:48,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805651716] [2024-11-28 04:55:48,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:55:48,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 163 states [2024-11-28 04:55:48,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:55:48,923 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 163 interpolants. [2024-11-28 04:55:48,924 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4888, Invalid=21518, Unknown=0, NotChecked=0, Total=26406 [2024-11-28 04:55:48,924 INFO L87 Difference]: Start difference. First operand 211 states and 215 transitions. Second operand has 163 states, 163 states have (on average 2.0122699386503067) internal successors, (328), 163 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:55:50,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:55:50,618 INFO L93 Difference]: Finished difference Result 286 states and 290 transitions. [2024-11-28 04:55:50,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2024-11-28 04:55:50,619 INFO L78 Accepts]: Start accepts. Automaton has has 163 states, 163 states have (on average 2.0122699386503067) internal successors, (328), 163 states have internal predecessors, (328), 0 states have call successors, (0), 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 139 [2024-11-28 04:55:50,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:55:50,620 INFO L225 Difference]: With dead ends: 286 [2024-11-28 04:55:50,620 INFO L226 Difference]: Without dead ends: 211 [2024-11-28 04:55:50,621 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 152 SyntacticMatches, 31 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19438 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=4967, Invalid=22093, Unknown=0, NotChecked=0, Total=27060 [2024-11-28 04:55:50,621 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 8 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 1540 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 1543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:55:50,621 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 187 Invalid, 1543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1540 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-28 04:55:50,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2024-11-28 04:55:50,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 210. [2024-11-28 04:55:50,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 209 states have (on average 1.0191387559808613) internal successors, (213), 209 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:55:50,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 213 transitions. [2024-11-28 04:55:50,689 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 213 transitions. Word has length 139 [2024-11-28 04:55:50,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:55:50,689 INFO L471 AbstractCegarLoop]: Abstraction has 210 states and 213 transitions. [2024-11-28 04:55:50,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 163 states, 163 states have (on average 2.0122699386503067) internal successors, (328), 163 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:55:50,689 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 213 transitions. [2024-11-28 04:55:50,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-28 04:55:50,690 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:55:50,690 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:55:50,703 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Forceful destruction successful, exit code 0 [2024-11-28 04:55:50,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123 [2024-11-28 04:55:50,891 INFO L396 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:55:50,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:55:50,891 INFO L85 PathProgramCache]: Analyzing trace with hash -330367226, now seen corresponding path program 61 times [2024-11-28 04:55:50,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:55:50,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523804294] [2024-11-28 04:55:50,891 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:55:50,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:55:50,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:55:54,355 INFO L134 CoverageAnalysis]: Checked inductivity of 1922 backedges. 900 proven. 1022 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:55:54,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:55:54,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523804294] [2024-11-28 04:55:54,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523804294] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:55:54,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044603417] [2024-11-28 04:55:54,356 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:55:54,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:55:54,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:55:54,358 INFO L229 MonitoredProcess]: Starting monitored process 120 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:55:54,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Waiting until timeout for monitored process [2024-11-28 04:55:54,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:55:54,543 INFO L256 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 71 conjuncts are in the unsatisfiable core [2024-11-28 04:55:54,545 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:56:00,512 INFO L134 CoverageAnalysis]: Checked inductivity of 1922 backedges. 961 proven. 961 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:56:00,512 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:56:05,745 INFO L134 CoverageAnalysis]: Checked inductivity of 1922 backedges. 961 proven. 961 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:56:05,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1044603417] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:56:05,745 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:56:05,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70, 70] total 171 [2024-11-28 04:56:05,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542688134] [2024-11-28 04:56:05,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:56:05,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 171 states [2024-11-28 04:56:05,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:56:05,747 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 171 interpolants. [2024-11-28 04:56:05,748 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5174, Invalid=23896, Unknown=0, NotChecked=0, Total=29070 [2024-11-28 04:56:05,749 INFO L87 Difference]: Start difference. First operand 210 states and 213 transitions. Second operand has 171 states, 171 states have (on average 1.9941520467836258) internal successors, (341), 171 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:56:07,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:56:07,038 INFO L93 Difference]: Finished difference Result 291 states and 297 transitions. [2024-11-28 04:56:07,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2024-11-28 04:56:07,038 INFO L78 Accepts]: Start accepts. Automaton has has 171 states, 171 states have (on average 1.9941520467836258) internal successors, (341), 171 states have internal predecessors, (341), 0 states have call successors, (0), 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 141 [2024-11-28 04:56:07,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:56:07,039 INFO L225 Difference]: With dead ends: 291 [2024-11-28 04:56:07,039 INFO L226 Difference]: Without dead ends: 214 [2024-11-28 04:56:07,040 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 148 SyntacticMatches, 33 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21491 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=5225, Invalid=24531, Unknown=0, NotChecked=0, Total=29756 [2024-11-28 04:56:07,040 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 8 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 925 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 04:56:07,041 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 113 Invalid, 932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 925 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 04:56:07,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2024-11-28 04:56:07,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 213. [2024-11-28 04:56:07,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 212 states have (on average 1.0235849056603774) internal successors, (217), 212 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:56:07,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 217 transitions. [2024-11-28 04:56:07,110 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 217 transitions. Word has length 141 [2024-11-28 04:56:07,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:56:07,110 INFO L471 AbstractCegarLoop]: Abstraction has 213 states and 217 transitions. [2024-11-28 04:56:07,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 171 states, 171 states have (on average 1.9941520467836258) internal successors, (341), 171 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:56:07,110 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 217 transitions. [2024-11-28 04:56:07,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-28 04:56:07,111 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:56:07,111 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:56:07,124 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Ended with exit code 0 [2024-11-28 04:56:07,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 120 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2024-11-28 04:56:07,311 INFO L396 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:56:07,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:56:07,312 INFO L85 PathProgramCache]: Analyzing trace with hash 499597318, now seen corresponding path program 59 times [2024-11-28 04:56:07,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:56:07,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343309693] [2024-11-28 04:56:07,312 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:56:07,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:56:07,331 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) [2024-11-28 04:56:07,331 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:56:11,726 INFO L134 CoverageAnalysis]: Checked inductivity of 1922 backedges. 961 proven. 961 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:56:11,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:56:11,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343309693] [2024-11-28 04:56:11,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343309693] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:56:11,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166163952] [2024-11-28 04:56:11,727 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:56:11,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:56:11,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:56:11,729 INFO L229 MonitoredProcess]: Starting monitored process 121 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:56:11,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Waiting until timeout for monitored process [2024-11-28 04:56:11,939 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) [2024-11-28 04:56:11,939 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:56:11,942 INFO L256 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 71 conjuncts are in the unsatisfiable core [2024-11-28 04:56:11,945 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:56:17,479 INFO L134 CoverageAnalysis]: Checked inductivity of 1922 backedges. 961 proven. 961 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:56:17,479 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:56:22,638 INFO L134 CoverageAnalysis]: Checked inductivity of 1922 backedges. 961 proven. 961 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:56:22,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166163952] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:56:22,638 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:56:22,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70, 70] total 169 [2024-11-28 04:56:22,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082813125] [2024-11-28 04:56:22,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:56:22,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 169 states [2024-11-28 04:56:22,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:56:22,640 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 169 interpolants. [2024-11-28 04:56:22,641 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5160, Invalid=23232, Unknown=0, NotChecked=0, Total=28392 [2024-11-28 04:56:22,642 INFO L87 Difference]: Start difference. First operand 213 states and 217 transitions. Second operand has 169 states, 169 states have (on average 2.0) internal successors, (338), 169 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:56:24,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:56:24,072 INFO L93 Difference]: Finished difference Result 227 states and 232 transitions. [2024-11-28 04:56:24,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2024-11-28 04:56:24,072 INFO L78 Accepts]: Start accepts. Automaton has has 169 states, 169 states have (on average 2.0) internal successors, (338), 169 states have internal predecessors, (338), 0 states have call successors, (0), 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 141 [2024-11-28 04:56:24,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:56:24,073 INFO L225 Difference]: With dead ends: 227 [2024-11-28 04:56:24,073 INFO L226 Difference]: Without dead ends: 220 [2024-11-28 04:56:24,074 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 150 SyntacticMatches, 33 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20884 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=5299, Invalid=23771, Unknown=0, NotChecked=0, Total=29070 [2024-11-28 04:56:24,074 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 11 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 1362 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 1367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:56:24,074 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 149 Invalid, 1367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1362 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 04:56:24,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2024-11-28 04:56:24,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 215. [2024-11-28 04:56:24,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 1.0233644859813085) internal successors, (219), 214 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:56:24,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 219 transitions. [2024-11-28 04:56:24,139 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 219 transitions. Word has length 141 [2024-11-28 04:56:24,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:56:24,140 INFO L471 AbstractCegarLoop]: Abstraction has 215 states and 219 transitions. [2024-11-28 04:56:24,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 169 states, 169 states have (on average 2.0) internal successors, (338), 169 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:56:24,140 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 219 transitions. [2024-11-28 04:56:24,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-28 04:56:24,140 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:56:24,140 INFO L218 NwaCegarLoop]: trace histogram [32, 32, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:56:24,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Forceful destruction successful, exit code 0 [2024-11-28 04:56:24,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 121 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2024-11-28 04:56:24,341 INFO L396 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:56:24,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:56:24,341 INFO L85 PathProgramCache]: Analyzing trace with hash -364295294, now seen corresponding path program 62 times [2024-11-28 04:56:24,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:56:24,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677781253] [2024-11-28 04:56:24,342 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:56:24,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:56:24,361 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:56:24,362 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:56:28,692 INFO L134 CoverageAnalysis]: Checked inductivity of 1985 backedges. 900 proven. 1085 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:56:28,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:56:28,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677781253] [2024-11-28 04:56:28,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677781253] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:56:28,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896299935] [2024-11-28 04:56:28,693 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:56:28,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:56:28,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:56:28,695 INFO L229 MonitoredProcess]: Starting monitored process 122 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:56:28,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Waiting until timeout for monitored process [2024-11-28 04:56:28,876 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:56:28,876 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:56:28,878 INFO L256 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 70 conjuncts are in the unsatisfiable core [2024-11-28 04:56:28,880 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:56:34,188 INFO L134 CoverageAnalysis]: Checked inductivity of 1985 backedges. 961 proven. 1024 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:56:34,188 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:56:39,266 INFO L134 CoverageAnalysis]: Checked inductivity of 1985 backedges. 1024 proven. 961 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:56:39,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1896299935] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:56:39,267 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:56:39,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 69, 69] total 169 [2024-11-28 04:56:39,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650066825] [2024-11-28 04:56:39,267 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:56:39,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 169 states [2024-11-28 04:56:39,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:56:39,269 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 169 interpolants. [2024-11-28 04:56:39,270 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5225, Invalid=23167, Unknown=0, NotChecked=0, Total=28392 [2024-11-28 04:56:39,270 INFO L87 Difference]: Start difference. First operand 215 states and 219 transitions. Second operand has 169 states, 169 states have (on average 2.029585798816568) internal successors, (343), 169 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:56:40,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:56:40,887 INFO L93 Difference]: Finished difference Result 296 states and 301 transitions. [2024-11-28 04:56:40,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2024-11-28 04:56:40,888 INFO L78 Accepts]: Start accepts. Automaton has has 169 states, 169 states have (on average 2.029585798816568) internal successors, (343), 169 states have internal predecessors, (343), 0 states have call successors, (0), 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 143 [2024-11-28 04:56:40,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:56:40,889 INFO L225 Difference]: With dead ends: 296 [2024-11-28 04:56:40,889 INFO L226 Difference]: Without dead ends: 289 [2024-11-28 04:56:40,890 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 155 SyntacticMatches, 32 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21107 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=5364, Invalid=23706, Unknown=0, NotChecked=0, Total=29070 [2024-11-28 04:56:40,891 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 16 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 1597 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 1604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:56:40,891 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 207 Invalid, 1604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1597 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-28 04:56:40,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2024-11-28 04:56:40,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 217. [2024-11-28 04:56:40,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 1.0231481481481481) internal successors, (221), 216 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:56:40,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 221 transitions. [2024-11-28 04:56:40,977 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 221 transitions. Word has length 143 [2024-11-28 04:56:40,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:56:40,977 INFO L471 AbstractCegarLoop]: Abstraction has 217 states and 221 transitions. [2024-11-28 04:56:40,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 169 states, 169 states have (on average 2.029585798816568) internal successors, (343), 169 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:56:40,977 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 221 transitions. [2024-11-28 04:56:40,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-28 04:56:40,978 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:56:40,978 INFO L218 NwaCegarLoop]: trace histogram [32, 32, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:56:40,986 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Ended with exit code 0 [2024-11-28 04:56:41,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 122 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable126 [2024-11-28 04:56:41,179 INFO L396 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:56:41,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:56:41,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1411063262, now seen corresponding path program 60 times [2024-11-28 04:56:41,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:56:41,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608234344] [2024-11-28 04:56:41,179 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:56:41,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:56:41,201 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 33 check-sat command(s) [2024-11-28 04:56:41,201 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:56:44,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1985 backedges. 963 proven. 1022 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:56:44,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:56:44,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608234344] [2024-11-28 04:56:44,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608234344] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:56:44,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475001216] [2024-11-28 04:56:44,538 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:56:44,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:56:44,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:56:44,540 INFO L229 MonitoredProcess]: Starting monitored process 123 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:56:44,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8db07f8-ed9e-44c1-9fe5-80cdb3626876/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Waiting until timeout for monitored process [2024-11-28 04:56:44,765 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 33 check-sat command(s) [2024-11-28 04:56:44,766 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:56:44,769 INFO L256 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 70 conjuncts are in the unsatisfiable core [2024-11-28 04:56:44,772 INFO L279 TraceCheckSpWp]: Computing forward predicates...