./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops-crafted-1/in-de20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops-crafted-1/in-de20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd --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 cfe6fce904e7772b92437e018e53dfef745de1dd85f6147cfc72edd062333cfd --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 15:00:54,621 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 15:00:54,711 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 15:00:54,717 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 15:00:54,718 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 15:00:54,743 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 15:00:54,744 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 15:00:54,744 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 15:00:54,745 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 15:00:54,745 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 15:00:54,745 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 15:00:54,745 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 15:00:54,746 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 15:00:54,746 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 15:00:54,746 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 15:00:54,746 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 15:00:54,746 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 15:00:54,746 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 15:00:54,747 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 15:00:54,747 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 15:00:54,747 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 15:00:54,747 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 15:00:54,747 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 15:00:54,748 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 15:00:54,748 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 15:00:54,748 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 15:00:54,748 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 15:00:54,748 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 15:00:54,748 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 15:00:54,748 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 15:00:54,748 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 15:00:54,749 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 15:00:54,749 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:00:54,749 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 15:00:54,749 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 15:00:54,749 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 15:00:54,749 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 15:00:54,749 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 15:00:54,749 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 15:00:54,749 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 15:00:54,749 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 15:00:54,749 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 15:00:54,750 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_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd 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 -> cfe6fce904e7772b92437e018e53dfef745de1dd85f6147cfc72edd062333cfd [2024-11-13 15:00:55,100 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 15:00:55,114 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 15:00:55,116 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 15:00:55,119 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 15:00:55,120 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 15:00:55,121 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/loops-crafted-1/in-de20.c Unable to find full path for "g++" [2024-11-13 15:00:57,318 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 15:00:57,619 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 15:00:57,620 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/sv-benchmarks/c/loops-crafted-1/in-de20.c [2024-11-13 15:00:57,630 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/data/64cea8846/b7a8728d13c940079296700074e1e06b/FLAG90a95475b [2024-11-13 15:00:57,650 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/data/64cea8846/b7a8728d13c940079296700074e1e06b [2024-11-13 15:00:57,652 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 15:00:57,654 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 15:00:57,656 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 15:00:57,656 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 15:00:57,662 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 15:00:57,663 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:00:57" (1/1) ... [2024-11-13 15:00:57,664 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32868294 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:00:57, skipping insertion in model container [2024-11-13 15:00:57,664 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:00:57" (1/1) ... [2024-11-13 15:00:57,712 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 15:00:57,928 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_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/sv-benchmarks/c/loops-crafted-1/in-de20.c[368,381] [2024-11-13 15:00:57,950 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:00:57,961 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 15:00:57,974 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_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/sv-benchmarks/c/loops-crafted-1/in-de20.c[368,381] [2024-11-13 15:00:57,980 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:00:57,996 INFO L204 MainTranslator]: Completed translation [2024-11-13 15:00:57,997 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:00:57 WrapperNode [2024-11-13 15:00:57,997 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 15:00:57,998 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 15:00:57,999 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 15:00:57,999 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 15:00:58,006 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:00:57" (1/1) ... [2024-11-13 15:00:58,013 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:00:57" (1/1) ... [2024-11-13 15:00:58,034 INFO L138 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 43 [2024-11-13 15:00:58,035 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 15:00:58,038 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 15:00:58,038 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 15:00:58,038 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 15:00:58,048 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:00:57" (1/1) ... [2024-11-13 15:00:58,048 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:00:57" (1/1) ... [2024-11-13 15:00:58,049 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:00:57" (1/1) ... [2024-11-13 15:00:58,066 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]. [2024-11-13 15:00:58,067 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:00:57" (1/1) ... [2024-11-13 15:00:58,068 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:00:57" (1/1) ... [2024-11-13 15:00:58,070 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:00:57" (1/1) ... [2024-11-13 15:00:58,076 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:00:57" (1/1) ... [2024-11-13 15:00:58,080 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:00:57" (1/1) ... [2024-11-13 15:00:58,080 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:00:57" (1/1) ... [2024-11-13 15:00:58,082 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 15:00:58,083 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 15:00:58,083 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 15:00:58,083 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 15:00:58,084 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:00:57" (1/1) ... [2024-11-13 15:00:58,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:00:58,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:00:58,126 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 15:00:58,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 15:00:58,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 15:00:58,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 15:00:58,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 15:00:58,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 15:00:58,259 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 15:00:58,264 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 15:00:58,449 INFO L? ?]: Removed 9 outVars from TransFormulas that were not future-live. [2024-11-13 15:00:58,449 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 15:00:58,465 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 15:00:58,466 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-13 15:00:58,467 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:00:58 BoogieIcfgContainer [2024-11-13 15:00:58,467 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 15:00:58,472 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 15:00:58,473 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 15:00:58,478 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 15:00:58,479 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 03:00:57" (1/3) ... [2024-11-13 15:00:58,480 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@494fe9ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:00:58, skipping insertion in model container [2024-11-13 15:00:58,480 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:00:57" (2/3) ... [2024-11-13 15:00:58,481 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@494fe9ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:00:58, skipping insertion in model container [2024-11-13 15:00:58,481 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:00:58" (3/3) ... [2024-11-13 15:00:58,483 INFO L112 eAbstractionObserver]: Analyzing ICFG in-de20.c [2024-11-13 15:00:58,503 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 15:00:58,505 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG in-de20.c that has 1 procedures, 13 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-13 15:00:58,591 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 15:00:58,613 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;@413af756, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 15:00:58,614 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 15:00:58,620 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:58,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-13 15:00:58,628 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:00:58,629 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:00:58,630 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:00:58,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:00:58,640 INFO L85 PathProgramCache]: Analyzing trace with hash 210137137, now seen corresponding path program 1 times [2024-11-13 15:00:58,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:00:58,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482350337] [2024-11-13 15:00:58,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:00:58,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:00:58,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:00:59,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:00:59,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:00:59,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482350337] [2024-11-13 15:00:59,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482350337] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:00:59,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:00:59,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:00:59,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902016987] [2024-11-13 15:00:59,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:00:59,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:00:59,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:00:59,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:00:59,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:00:59,249 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 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 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:59,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:00:59,310 INFO L93 Difference]: Finished difference Result 28 states and 39 transitions. [2024-11-13 15:00:59,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:00:59,318 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2024-11-13 15:00:59,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:00:59,330 INFO L225 Difference]: With dead ends: 28 [2024-11-13 15:00:59,331 INFO L226 Difference]: Without dead ends: 12 [2024-11-13 15:00:59,334 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:00:59,337 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:00:59,338 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 15:00:59,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2024-11-13 15:00:59,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2024-11-13 15:00:59,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 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) [2024-11-13 15:00:59,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2024-11-13 15:00:59,380 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 8 [2024-11-13 15:00:59,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:00:59,380 INFO L471 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2024-11-13 15:00:59,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:59,381 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2024-11-13 15:00:59,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-13 15:00:59,381 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:00:59,382 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:00:59,382 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 15:00:59,382 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:00:59,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:00:59,383 INFO L85 PathProgramCache]: Analyzing trace with hash -2074017963, now seen corresponding path program 1 times [2024-11-13 15:00:59,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:00:59,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040780578] [2024-11-13 15:00:59,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:00:59,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:00:59,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:00:59,533 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:00:59,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:00:59,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040780578] [2024-11-13 15:00:59,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040780578] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:00:59,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:00:59,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:00:59,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937915515] [2024-11-13 15:00:59,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:00:59,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:00:59,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:00:59,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:00:59,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:00:59,536 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:59,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:00:59,555 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2024-11-13 15:00:59,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:00:59,556 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2024-11-13 15:00:59,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:00:59,556 INFO L225 Difference]: With dead ends: 17 [2024-11-13 15:00:59,557 INFO L226 Difference]: Without dead ends: 10 [2024-11-13 15:00:59,557 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:00:59,558 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:00:59,558 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 15:00:59,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2024-11-13 15:00:59,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2024-11-13 15:00:59,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 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) [2024-11-13 15:00:59,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2024-11-13 15:00:59,561 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 9 [2024-11-13 15:00:59,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:00:59,561 INFO L471 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2024-11-13 15:00:59,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:59,562 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2024-11-13 15:00:59,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-13 15:00:59,562 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:00:59,562 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:00:59,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 15:00:59,562 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:00:59,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:00:59,563 INFO L85 PathProgramCache]: Analyzing trace with hash -478173675, now seen corresponding path program 1 times [2024-11-13 15:00:59,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:00:59,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701875174] [2024-11-13 15:00:59,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:00:59,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:00:59,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:00:59,729 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:00:59,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:00:59,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701875174] [2024-11-13 15:00:59,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701875174] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:00:59,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401950852] [2024-11-13 15:00:59,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:00:59,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:00:59,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:00:59,733 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:00:59,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 15:00:59,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:00:59,816 INFO L255 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 15:00:59,819 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:00:59,884 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:00:59,884 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:00:59,982 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:00:59,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401950852] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:00:59,984 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:00:59,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-11-13 15:00:59,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307965588] [2024-11-13 15:00:59,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:00:59,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 15:00:59,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:00:59,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 15:00:59,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-13 15:00:59,986 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 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) [2024-11-13 15:01:00,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:01:00,089 INFO L93 Difference]: Finished difference Result 22 states and 27 transitions. [2024-11-13 15:01:00,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 15:01:00,092 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 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 9 [2024-11-13 15:01:00,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:01:00,094 INFO L225 Difference]: With dead ends: 22 [2024-11-13 15:01:00,094 INFO L226 Difference]: Without dead ends: 18 [2024-11-13 15:01:00,094 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-13 15:01:00,098 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 1 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:01:00,099 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 46 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:01:00,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-11-13 15:01:00,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 15. [2024-11-13 15:01:00,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:00,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2024-11-13 15:01:00,109 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 19 transitions. Word has length 9 [2024-11-13 15:01:00,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:01:00,109 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 19 transitions. [2024-11-13 15:01:00,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 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) [2024-11-13 15:01:00,110 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 19 transitions. [2024-11-13 15:01:00,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-13 15:01:00,110 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:01:00,110 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:01:00,133 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 15:01:00,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:01:00,311 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:01:00,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:01:00,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1936816655, now seen corresponding path program 1 times [2024-11-13 15:01:00,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:01:00,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557270031] [2024-11-13 15:01:00,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:01:00,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:01:00,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:01:00,692 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:00,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:01:00,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557270031] [2024-11-13 15:01:00,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557270031] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:01:00,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499541924] [2024-11-13 15:01:00,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:01:00,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:01:00,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:01:00,695 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:01:00,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 15:01:00,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:01:00,742 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-13 15:01:00,745 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:01:00,800 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:00,800 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:01:00,916 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:00,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499541924] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:01:00,917 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:01:00,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2024-11-13 15:01:00,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376163799] [2024-11-13 15:01:00,917 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:01:00,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 15:01:00,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:01:00,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 15:01:00,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-13 15:01:00,922 INFO L87 Difference]: Start difference. First operand 15 states and 19 transitions. Second operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:00,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:01:00,980 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2024-11-13 15:01:00,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:01:00,981 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 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 10 [2024-11-13 15:01:00,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:01:00,982 INFO L225 Difference]: With dead ends: 22 [2024-11-13 15:01:00,982 INFO L226 Difference]: Without dead ends: 18 [2024-11-13 15:01:00,982 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-13 15:01:00,983 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:01:00,983 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 15:01:00,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-11-13 15:01:00,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2024-11-13 15:01:00,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 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) [2024-11-13 15:01:00,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2024-11-13 15:01:00,993 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 10 [2024-11-13 15:01:00,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:01:00,993 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2024-11-13 15:01:00,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:00,994 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2024-11-13 15:01:00,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-13 15:01:00,994 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:01:00,995 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:01:01,015 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 15:01:01,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:01:01,198 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:01:01,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:01:01,199 INFO L85 PathProgramCache]: Analyzing trace with hash 89891221, now seen corresponding path program 2 times [2024-11-13 15:01:01,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:01:01,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717836278] [2024-11-13 15:01:01,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:01:01,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:01:01,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:01:01,327 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:01,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:01:01,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717836278] [2024-11-13 15:01:01,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717836278] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:01:01,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991848655] [2024-11-13 15:01:01,327 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:01:01,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:01:01,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:01:01,331 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:01:01,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 15:01:01,391 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 15:01:01,391 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:01:01,392 INFO L255 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-13 15:01:01,393 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:01:01,464 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:01,464 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:01:01,591 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:01,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1991848655] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:01:01,592 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:01:01,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 12 [2024-11-13 15:01:01,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272599153] [2024-11-13 15:01:01,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:01:01,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-13 15:01:01,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:01:01,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-13 15:01:01,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-11-13 15:01:01,593 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:01,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:01:01,679 INFO L93 Difference]: Finished difference Result 27 states and 33 transitions. [2024-11-13 15:01:01,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 15:01:01,680 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-13 15:01:01,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:01:01,680 INFO L225 Difference]: With dead ends: 27 [2024-11-13 15:01:01,680 INFO L226 Difference]: Without dead ends: 19 [2024-11-13 15:01:01,681 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-11-13 15:01:01,681 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 1 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:01:01,682 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 64 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:01:01,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-11-13 15:01:01,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2024-11-13 15:01:01,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:01,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2024-11-13 15:01:01,688 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 11 [2024-11-13 15:01:01,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:01:01,688 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2024-11-13 15:01:01,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:01,688 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2024-11-13 15:01:01,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-13 15:01:01,689 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:01:01,689 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:01:01,706 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 15:01:01,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:01:01,893 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:01:01,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:01:01,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1203637967, now seen corresponding path program 3 times [2024-11-13 15:01:01,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:01:01,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234190022] [2024-11-13 15:01:01,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:01:01,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:01:01,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:01:02,341 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:02,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:01:02,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234190022] [2024-11-13 15:01:02,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234190022] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:01:02,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169464565] [2024-11-13 15:01:02,342 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 15:01:02,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:01:02,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:01:02,345 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:01:02,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 15:01:02,395 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-13 15:01:02,396 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:01:02,397 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-13 15:01:02,398 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:01:02,456 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:02,457 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:01:02,583 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:02,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169464565] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:01:02,584 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:01:02,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 14 [2024-11-13 15:01:02,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671892775] [2024-11-13 15:01:02,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:01:02,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-13 15:01:02,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:01:02,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-13 15:01:02,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-11-13 15:01:02,587 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:02,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:01:02,692 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2024-11-13 15:01:02,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 15:01:02,693 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 0 states have call successors, (0), 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 12 [2024-11-13 15:01:02,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:01:02,694 INFO L225 Difference]: With dead ends: 25 [2024-11-13 15:01:02,694 INFO L226 Difference]: Without dead ends: 21 [2024-11-13 15:01:02,694 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-11-13 15:01:02,695 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:01:02,695 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 51 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:01:02,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-13 15:01:02,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2024-11-13 15:01:02,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:02,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2024-11-13 15:01:02,710 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 12 [2024-11-13 15:01:02,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:01:02,710 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2024-11-13 15:01:02,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:02,711 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2024-11-13 15:01:02,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-13 15:01:02,713 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:01:02,713 INFO L215 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:01:02,735 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 15:01:02,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:01:02,917 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:01:02,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:01:02,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1022894705, now seen corresponding path program 4 times [2024-11-13 15:01:02,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:01:02,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969865463] [2024-11-13 15:01:02,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:01:02,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:01:02,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:01:03,105 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:03,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:01:03,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969865463] [2024-11-13 15:01:03,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969865463] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:01:03,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956333820] [2024-11-13 15:01:03,106 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 15:01:03,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:01:03,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:01:03,108 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:01:03,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 15:01:03,164 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 15:01:03,165 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:01:03,166 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-13 15:01:03,167 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:01:03,205 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:03,206 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:01:03,354 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:03,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956333820] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:01:03,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:01:03,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-11-13 15:01:03,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528140108] [2024-11-13 15:01:03,357 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:01:03,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-13 15:01:03,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:01:03,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-13 15:01:03,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2024-11-13 15:01:03,359 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 15 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 15 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:03,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:01:03,623 INFO L93 Difference]: Finished difference Result 36 states and 46 transitions. [2024-11-13 15:01:03,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 15:01:03,623 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 15 states have internal predecessors, (22), 0 states have call successors, (0), 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 12 [2024-11-13 15:01:03,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:01:03,624 INFO L225 Difference]: With dead ends: 36 [2024-11-13 15:01:03,624 INFO L226 Difference]: Without dead ends: 32 [2024-11-13 15:01:03,625 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2024-11-13 15:01:03,626 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 8 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:01:03,629 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 61 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:01:03,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-13 15:01:03,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 24. [2024-11-13 15:01:03,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:03,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 32 transitions. [2024-11-13 15:01:03,645 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 32 transitions. Word has length 12 [2024-11-13 15:01:03,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:01:03,646 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 32 transitions. [2024-11-13 15:01:03,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 15 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:03,649 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 32 transitions. [2024-11-13 15:01:03,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-13 15:01:03,650 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:01:03,650 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:01:03,677 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 15:01:03,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:01:03,851 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:01:03,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:01:03,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1343594069, now seen corresponding path program 5 times [2024-11-13 15:01:03,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:01:03,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481690836] [2024-11-13 15:01:03,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:01:03,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:01:03,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:01:04,009 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:04,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:01:04,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481690836] [2024-11-13 15:01:04,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481690836] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:01:04,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237365369] [2024-11-13 15:01:04,011 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 15:01:04,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:01:04,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:01:04,013 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:01:04,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 15:01:04,072 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-13 15:01:04,072 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:01:04,074 INFO L255 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-13 15:01:04,075 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:01:04,142 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:04,143 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:01:04,333 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:04,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237365369] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:01:04,334 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:01:04,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 16 [2024-11-13 15:01:04,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92155504] [2024-11-13 15:01:04,334 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:01:04,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-13 15:01:04,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:01:04,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-13 15:01:04,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2024-11-13 15:01:04,336 INFO L87 Difference]: Start difference. First operand 24 states and 32 transitions. Second operand has 16 states, 16 states have (on average 1.5) internal successors, (24), 16 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:04,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:01:04,601 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2024-11-13 15:01:04,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-13 15:01:04,601 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.5) internal successors, (24), 16 states have internal predecessors, (24), 0 states have call successors, (0), 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 13 [2024-11-13 15:01:04,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:01:04,602 INFO L225 Difference]: With dead ends: 44 [2024-11-13 15:01:04,602 INFO L226 Difference]: Without dead ends: 35 [2024-11-13 15:01:04,602 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2024-11-13 15:01:04,603 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 3 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:01:04,603 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 71 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:01:04,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-13 15:01:04,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 29. [2024-11-13 15:01:04,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 28 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) [2024-11-13 15:01:04,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2024-11-13 15:01:04,616 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 13 [2024-11-13 15:01:04,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:01:04,616 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2024-11-13 15:01:04,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.5) internal successors, (24), 16 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:04,616 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2024-11-13 15:01:04,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-13 15:01:04,617 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:01:04,617 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:01:04,637 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-13 15:01:04,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-13 15:01:04,821 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:01:04,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:01:04,822 INFO L85 PathProgramCache]: Analyzing trace with hash -492407055, now seen corresponding path program 6 times [2024-11-13 15:01:04,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:01:04,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807702749] [2024-11-13 15:01:04,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:01:04,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:01:04,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:01:05,399 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:05,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:01:05,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807702749] [2024-11-13 15:01:05,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807702749] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:01:05,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418623877] [2024-11-13 15:01:05,400 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 15:01:05,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:01:05,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:01:05,402 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:01:05,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 15:01:05,464 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-13 15:01:05,464 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:01:05,465 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-13 15:01:05,469 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:01:05,564 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:05,564 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:01:05,777 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:05,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418623877] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:01:05,778 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:01:05,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 18 [2024-11-13 15:01:05,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338771407] [2024-11-13 15:01:05,779 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:01:05,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-13 15:01:05,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:01:05,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-13 15:01:05,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2024-11-13 15:01:05,783 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. Second operand has 18 states, 18 states have (on average 2.0) internal successors, (36), 18 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) [2024-11-13 15:01:05,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:01:05,989 INFO L93 Difference]: Finished difference Result 37 states and 44 transitions. [2024-11-13 15:01:05,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 15:01:05,990 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.0) internal successors, (36), 18 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) Word has length 14 [2024-11-13 15:01:05,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:01:05,991 INFO L225 Difference]: With dead ends: 37 [2024-11-13 15:01:05,991 INFO L226 Difference]: Without dead ends: 33 [2024-11-13 15:01:05,992 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2024-11-13 15:01:05,992 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 15:01:05,993 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 71 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 15:01:05,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-13 15:01:06,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 28. [2024-11-13 15:01:06,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 27 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) [2024-11-13 15:01:06,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2024-11-13 15:01:06,011 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 14 [2024-11-13 15:01:06,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:01:06,011 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2024-11-13 15:01:06,011 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.0) internal successors, (36), 18 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) [2024-11-13 15:01:06,012 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2024-11-13 15:01:06,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-13 15:01:06,013 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:01:06,013 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:01:06,036 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-13 15:01:06,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:01:06,217 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:01:06,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:01:06,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1916915861, now seen corresponding path program 7 times [2024-11-13 15:01:06,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:01:06,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149523247] [2024-11-13 15:01:06,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:01:06,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:01:06,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:01:06,379 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:06,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:01:06,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149523247] [2024-11-13 15:01:06,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149523247] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:01:06,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140278771] [2024-11-13 15:01:06,380 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 15:01:06,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:01:06,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:01:06,383 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:01:06,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 15:01:06,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:01:06,443 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-13 15:01:06,444 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:01:06,519 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:06,519 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:01:06,796 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:06,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140278771] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:01:06,797 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:01:06,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 20 [2024-11-13 15:01:06,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559067511] [2024-11-13 15:01:06,797 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:01:06,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-13 15:01:06,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:01:06,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-13 15:01:06,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2024-11-13 15:01:06,798 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand has 20 states, 20 states have (on average 1.4) internal successors, (28), 20 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:07,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:01:07,245 INFO L93 Difference]: Finished difference Result 48 states and 61 transitions. [2024-11-13 15:01:07,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-13 15:01:07,246 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.4) internal successors, (28), 20 states have internal predecessors, (28), 0 states have call successors, (0), 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 15 [2024-11-13 15:01:07,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:01:07,246 INFO L225 Difference]: With dead ends: 48 [2024-11-13 15:01:07,246 INFO L226 Difference]: Without dead ends: 38 [2024-11-13 15:01:07,247 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=149, Invalid=721, Unknown=0, NotChecked=0, Total=870 [2024-11-13 15:01:07,247 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 6 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:01:07,247 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 72 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:01:07,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-13 15:01:07,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 33. [2024-11-13 15:01:07,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.3125) internal successors, (42), 32 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:07,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 42 transitions. [2024-11-13 15:01:07,262 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 42 transitions. Word has length 15 [2024-11-13 15:01:07,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:01:07,262 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 42 transitions. [2024-11-13 15:01:07,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.4) internal successors, (28), 20 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:07,263 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 42 transitions. [2024-11-13 15:01:07,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-13 15:01:07,263 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:01:07,263 INFO L215 NwaCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:01:07,283 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-13 15:01:07,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:01:07,464 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:01:07,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:01:07,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1743421291, now seen corresponding path program 2 times [2024-11-13 15:01:07,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:01:07,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62570224] [2024-11-13 15:01:07,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:01:07,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:01:07,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:01:07,621 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:07,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:01:07,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62570224] [2024-11-13 15:01:07,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62570224] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:01:07,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607333076] [2024-11-13 15:01:07,622 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:01:07,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:01:07,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:01:07,624 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:01:07,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 15:01:07,683 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 15:01:07,683 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:01:07,685 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-13 15:01:07,686 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:01:07,725 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:07,725 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:01:07,953 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:07,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [607333076] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:01:07,954 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:01:07,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2024-11-13 15:01:07,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454730793] [2024-11-13 15:01:07,954 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:01:07,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-13 15:01:07,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:01:07,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-13 15:01:07,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=315, Unknown=0, NotChecked=0, Total=420 [2024-11-13 15:01:07,955 INFO L87 Difference]: Start difference. First operand 33 states and 42 transitions. Second operand has 21 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 21 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:08,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:01:08,610 INFO L93 Difference]: Finished difference Result 55 states and 72 transitions. [2024-11-13 15:01:08,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-13 15:01:08,610 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 21 states have internal predecessors, (28), 0 states have call successors, (0), 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 15 [2024-11-13 15:01:08,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:01:08,611 INFO L225 Difference]: With dead ends: 55 [2024-11-13 15:01:08,611 INFO L226 Difference]: Without dead ends: 51 [2024-11-13 15:01:08,611 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=224, Invalid=532, Unknown=0, NotChecked=0, Total=756 [2024-11-13 15:01:08,612 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 35 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:01:08,612 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 112 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:01:08,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-13 15:01:08,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 42. [2024-11-13 15:01:08,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.4146341463414633) internal successors, (58), 41 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:08,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 58 transitions. [2024-11-13 15:01:08,626 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 58 transitions. Word has length 15 [2024-11-13 15:01:08,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:01:08,626 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 58 transitions. [2024-11-13 15:01:08,626 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 21 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:08,626 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 58 transitions. [2024-11-13 15:01:08,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-13 15:01:08,627 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:01:08,627 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:01:08,646 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-13 15:01:08,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:01:08,828 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:01:08,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:01:08,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1543572943, now seen corresponding path program 8 times [2024-11-13 15:01:08,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:01:08,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140471200] [2024-11-13 15:01:08,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:01:08,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:01:08,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:01:09,327 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:09,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:01:09,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140471200] [2024-11-13 15:01:09,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140471200] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:01:09,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800251885] [2024-11-13 15:01:09,327 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:01:09,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:01:09,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:01:09,330 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:01:09,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 15:01:09,387 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 15:01:09,387 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:01:09,388 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-13 15:01:09,390 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:01:09,487 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:09,487 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:01:09,713 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:09,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800251885] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:01:09,713 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:01:09,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 8] total 22 [2024-11-13 15:01:09,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986085515] [2024-11-13 15:01:09,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:01:09,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-13 15:01:09,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:01:09,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-13 15:01:09,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=396, Unknown=0, NotChecked=0, Total=462 [2024-11-13 15:01:09,715 INFO L87 Difference]: Start difference. First operand 42 states and 58 transitions. Second operand has 22 states, 22 states have (on average 1.9090909090909092) internal successors, (42), 22 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:09,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:01:09,922 INFO L93 Difference]: Finished difference Result 51 states and 67 transitions. [2024-11-13 15:01:09,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 15:01:09,922 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.9090909090909092) internal successors, (42), 22 states have internal predecessors, (42), 0 states have call successors, (0), 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 [2024-11-13 15:01:09,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:01:09,924 INFO L225 Difference]: With dead ends: 51 [2024-11-13 15:01:09,926 INFO L226 Difference]: Without dead ends: 47 [2024-11-13 15:01:09,927 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=396, Unknown=0, NotChecked=0, Total=462 [2024-11-13 15:01:09,927 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 15:01:09,927 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 61 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 15:01:09,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-13 15:01:09,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 41. [2024-11-13 15:01:09,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.425) internal successors, (57), 40 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) [2024-11-13 15:01:09,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 57 transitions. [2024-11-13 15:01:09,945 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 57 transitions. Word has length 16 [2024-11-13 15:01:09,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:01:09,946 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 57 transitions. [2024-11-13 15:01:09,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.9090909090909092) internal successors, (42), 22 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:09,946 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 57 transitions. [2024-11-13 15:01:09,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-13 15:01:09,948 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:01:09,948 INFO L215 NwaCegarLoop]: trace histogram [6, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:01:09,967 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-13 15:01:10,152 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:01:10,153 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:01:10,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:01:10,153 INFO L85 PathProgramCache]: Analyzing trace with hash -436352463, now seen corresponding path program 9 times [2024-11-13 15:01:10,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:01:10,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087818488] [2024-11-13 15:01:10,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:01:10,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:01:10,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:01:10,317 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:10,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:01:10,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087818488] [2024-11-13 15:01:10,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087818488] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:01:10,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864914123] [2024-11-13 15:01:10,318 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 15:01:10,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:01:10,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:01:10,320 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:01:10,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-13 15:01:10,642 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-13 15:01:10,642 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:01:10,643 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-13 15:01:10,644 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:01:10,682 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:10,682 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:01:10,927 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:10,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864914123] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:01:10,928 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:01:10,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2024-11-13 15:01:10,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890586843] [2024-11-13 15:01:10,928 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:01:10,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-13 15:01:10,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:01:10,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-13 15:01:10,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2024-11-13 15:01:10,929 INFO L87 Difference]: Start difference. First operand 41 states and 57 transitions. Second operand has 23 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 23 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:11,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:01:11,464 INFO L93 Difference]: Finished difference Result 65 states and 83 transitions. [2024-11-13 15:01:11,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-13 15:01:11,465 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 23 states have internal predecessors, (30), 0 states have call successors, (0), 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 [2024-11-13 15:01:11,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:01:11,466 INFO L225 Difference]: With dead ends: 65 [2024-11-13 15:01:11,466 INFO L226 Difference]: Without dead ends: 61 [2024-11-13 15:01:11,466 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=210, Invalid=782, Unknown=0, NotChecked=0, Total=992 [2024-11-13 15:01:11,467 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 31 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:01:11,467 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 95 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:01:11,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-13 15:01:11,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 41. [2024-11-13 15:01:11,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.375) internal successors, (55), 40 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) [2024-11-13 15:01:11,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 55 transitions. [2024-11-13 15:01:11,481 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 55 transitions. Word has length 16 [2024-11-13 15:01:11,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:01:11,481 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 55 transitions. [2024-11-13 15:01:11,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 23 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:11,481 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 55 transitions. [2024-11-13 15:01:11,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-13 15:01:11,482 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:01:11,482 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:01:11,501 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-13 15:01:11,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:01:11,682 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:01:11,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:01:11,683 INFO L85 PathProgramCache]: Analyzing trace with hash -604455595, now seen corresponding path program 10 times [2024-11-13 15:01:11,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:01:11,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575842529] [2024-11-13 15:01:11,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:01:11,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:01:11,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:01:11,877 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:11,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:01:11,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575842529] [2024-11-13 15:01:11,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575842529] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:01:11,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091536688] [2024-11-13 15:01:11,877 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 15:01:11,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:01:11,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:01:11,881 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:01:11,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-13 15:01:11,929 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 15:01:11,929 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:01:11,930 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-13 15:01:11,931 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:01:11,993 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:11,994 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:01:12,255 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:12,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091536688] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:01:12,255 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:01:12,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 24 [2024-11-13 15:01:12,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773576398] [2024-11-13 15:01:12,256 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:01:12,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-13 15:01:12,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:01:12,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-13 15:01:12,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2024-11-13 15:01:12,257 INFO L87 Difference]: Start difference. First operand 41 states and 55 transitions. Second operand has 24 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 24 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:12,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:01:12,909 INFO L93 Difference]: Finished difference Result 71 states and 91 transitions. [2024-11-13 15:01:12,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-13 15:01:12,909 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 24 states have internal predecessors, (32), 0 states have call successors, (0), 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 17 [2024-11-13 15:01:12,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:01:12,910 INFO L225 Difference]: With dead ends: 71 [2024-11-13 15:01:12,910 INFO L226 Difference]: Without dead ends: 60 [2024-11-13 15:01:12,911 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=253, Invalid=1307, Unknown=0, NotChecked=0, Total=1560 [2024-11-13 15:01:12,911 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 10 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:01:12,912 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 86 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:01:12,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-11-13 15:01:12,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 48. [2024-11-13 15:01:12,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.3404255319148937) internal successors, (63), 47 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) [2024-11-13 15:01:12,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 63 transitions. [2024-11-13 15:01:12,928 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 63 transitions. Word has length 17 [2024-11-13 15:01:12,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:01:12,928 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 63 transitions. [2024-11-13 15:01:12,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 24 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:12,928 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 63 transitions. [2024-11-13 15:01:12,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-13 15:01:12,929 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:01:12,929 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:01:12,943 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-13 15:01:13,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-13 15:01:13,130 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:01:13,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:01:13,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1829509135, now seen corresponding path program 11 times [2024-11-13 15:01:13,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:01:13,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663057978] [2024-11-13 15:01:13,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:01:13,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:01:13,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:01:13,697 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:13,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:01:13,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663057978] [2024-11-13 15:01:13,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663057978] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:01:13,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872173224] [2024-11-13 15:01:13,698 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 15:01:13,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:01:13,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:01:13,700 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:01:13,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-13 15:01:13,763 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-13 15:01:13,763 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:01:13,764 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-13 15:01:13,766 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:01:13,876 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:13,877 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:01:14,127 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:14,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [872173224] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:01:14,128 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:01:14,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9, 9] total 25 [2024-11-13 15:01:14,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201863061] [2024-11-13 15:01:14,128 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:01:14,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-13 15:01:14,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:01:14,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-13 15:01:14,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=524, Unknown=0, NotChecked=0, Total=600 [2024-11-13 15:01:14,129 INFO L87 Difference]: Start difference. First operand 48 states and 63 transitions. Second operand has 25 states, 25 states have (on average 1.88) internal successors, (47), 25 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) [2024-11-13 15:01:14,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:01:14,333 INFO L93 Difference]: Finished difference Result 58 states and 73 transitions. [2024-11-13 15:01:14,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 15:01:14,334 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.88) internal successors, (47), 25 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) Word has length 18 [2024-11-13 15:01:14,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:01:14,335 INFO L225 Difference]: With dead ends: 58 [2024-11-13 15:01:14,335 INFO L226 Difference]: Without dead ends: 54 [2024-11-13 15:01:14,337 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=76, Invalid=524, Unknown=0, NotChecked=0, Total=600 [2024-11-13 15:01:14,338 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 15:01:14,338 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 61 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 15:01:14,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-13 15:01:14,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 47. [2024-11-13 15:01:14,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.3478260869565217) internal successors, (62), 46 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:14,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2024-11-13 15:01:14,363 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 18 [2024-11-13 15:01:14,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:01:14,364 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2024-11-13 15:01:14,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.88) internal successors, (47), 25 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) [2024-11-13 15:01:14,364 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2024-11-13 15:01:14,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-13 15:01:14,365 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:01:14,365 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:01:14,382 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-13 15:01:14,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-13 15:01:14,569 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:01:14,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:01:14,570 INFO L85 PathProgramCache]: Analyzing trace with hash -878542955, now seen corresponding path program 12 times [2024-11-13 15:01:14,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:01:14,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558058202] [2024-11-13 15:01:14,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:01:14,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:01:14,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:01:14,763 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:14,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:01:14,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558058202] [2024-11-13 15:01:14,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558058202] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:01:14,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889439603] [2024-11-13 15:01:14,763 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 15:01:14,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:01:14,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:01:14,766 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:01:14,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-13 15:01:14,824 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-13 15:01:14,824 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:01:14,825 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-13 15:01:14,827 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:01:14,890 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:14,891 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:01:15,235 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:15,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1889439603] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:01:15,235 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:01:15,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 28 [2024-11-13 15:01:15,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395601398] [2024-11-13 15:01:15,236 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:01:15,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-13 15:01:15,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:01:15,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-13 15:01:15,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=629, Unknown=0, NotChecked=0, Total=756 [2024-11-13 15:01:15,237 INFO L87 Difference]: Start difference. First operand 47 states and 62 transitions. Second operand has 28 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 28 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) [2024-11-13 15:01:16,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:01:16,398 INFO L93 Difference]: Finished difference Result 85 states and 108 transitions. [2024-11-13 15:01:16,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-11-13 15:01:16,398 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 28 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) Word has length 19 [2024-11-13 15:01:16,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:01:16,399 INFO L225 Difference]: With dead ends: 85 [2024-11-13 15:01:16,399 INFO L226 Difference]: Without dead ends: 73 [2024-11-13 15:01:16,400 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=400, Invalid=2150, Unknown=0, NotChecked=0, Total=2550 [2024-11-13 15:01:16,401 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 15 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 15:01:16,401 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 112 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 15:01:16,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-13 15:01:16,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 56. [2024-11-13 15:01:16,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.3272727272727274) internal successors, (73), 55 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) [2024-11-13 15:01:16,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 73 transitions. [2024-11-13 15:01:16,426 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 73 transitions. Word has length 19 [2024-11-13 15:01:16,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:01:16,426 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 73 transitions. [2024-11-13 15:01:16,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 28 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) [2024-11-13 15:01:16,426 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 73 transitions. [2024-11-13 15:01:16,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-13 15:01:16,427 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:01:16,427 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:01:16,444 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-13 15:01:16,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-13 15:01:16,631 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:01:16,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:01:16,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1333955791, now seen corresponding path program 13 times [2024-11-13 15:01:16,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:01:16,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95272359] [2024-11-13 15:01:16,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:01:16,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:01:16,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:01:17,306 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:17,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:01:17,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95272359] [2024-11-13 15:01:17,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95272359] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:01:17,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906061003] [2024-11-13 15:01:17,307 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 15:01:17,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:01:17,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:01:17,309 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:01:17,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-13 15:01:17,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:01:17,371 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-13 15:01:17,372 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:01:17,555 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:17,555 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:01:17,954 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:17,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906061003] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:01:17,954 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:01:17,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 10, 10] total 30 [2024-11-13 15:01:17,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249982123] [2024-11-13 15:01:17,954 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:01:17,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-13 15:01:17,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:01:17,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-13 15:01:17,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=776, Unknown=0, NotChecked=0, Total=870 [2024-11-13 15:01:17,955 INFO L87 Difference]: Start difference. First operand 56 states and 73 transitions. Second operand has 30 states, 30 states have (on average 1.8) internal successors, (54), 30 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:18,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:01:18,316 INFO L93 Difference]: Finished difference Result 67 states and 84 transitions. [2024-11-13 15:01:18,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-13 15:01:18,317 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.8) internal successors, (54), 30 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-13 15:01:18,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:01:18,317 INFO L225 Difference]: With dead ends: 67 [2024-11-13 15:01:18,317 INFO L226 Difference]: Without dead ends: 63 [2024-11-13 15:01:18,318 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=94, Invalid=776, Unknown=0, NotChecked=0, Total=870 [2024-11-13 15:01:18,318 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 15:01:18,318 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 15:01:18,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-13 15:01:18,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 55. [2024-11-13 15:01:18,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.3333333333333333) internal successors, (72), 54 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:18,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 72 transitions. [2024-11-13 15:01:18,346 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 72 transitions. Word has length 20 [2024-11-13 15:01:18,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:01:18,346 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 72 transitions. [2024-11-13 15:01:18,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.8) internal successors, (54), 30 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:18,346 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 72 transitions. [2024-11-13 15:01:18,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-13 15:01:18,347 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:01:18,347 INFO L215 NwaCegarLoop]: trace histogram [9, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:01:18,369 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-13 15:01:18,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-13 15:01:18,548 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:01:18,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:01:18,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1642779535, now seen corresponding path program 14 times [2024-11-13 15:01:18,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:01:18,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785361254] [2024-11-13 15:01:18,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:01:18,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:01:18,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:01:18,789 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:18,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:01:18,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785361254] [2024-11-13 15:01:18,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785361254] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:01:18,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570987916] [2024-11-13 15:01:18,790 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:01:18,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:01:18,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:01:18,793 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:01:18,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-13 15:01:18,856 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 15:01:18,856 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:01:18,863 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-13 15:01:18,868 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:01:18,926 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:18,927 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:01:19,395 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:19,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [570987916] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:01:19,395 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:01:19,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 31 [2024-11-13 15:01:19,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814504845] [2024-11-13 15:01:19,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:01:19,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-13 15:01:19,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:01:19,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-13 15:01:19,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=751, Unknown=0, NotChecked=0, Total=930 [2024-11-13 15:01:19,397 INFO L87 Difference]: Start difference. First operand 55 states and 72 transitions. Second operand has 31 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 31 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:20,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:01:20,779 INFO L93 Difference]: Finished difference Result 98 states and 129 transitions. [2024-11-13 15:01:20,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-13 15:01:20,780 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 31 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-13 15:01:20,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:01:20,780 INFO L225 Difference]: With dead ends: 98 [2024-11-13 15:01:20,780 INFO L226 Difference]: Without dead ends: 94 [2024-11-13 15:01:20,781 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=411, Invalid=1659, Unknown=0, NotChecked=0, Total=2070 [2024-11-13 15:01:20,782 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 58 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 15:01:20,782 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 143 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 15:01:20,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-13 15:01:20,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 59. [2024-11-13 15:01:20,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.3793103448275863) internal successors, (80), 58 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:20,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 80 transitions. [2024-11-13 15:01:20,804 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 80 transitions. Word has length 20 [2024-11-13 15:01:20,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:01:20,804 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 80 transitions. [2024-11-13 15:01:20,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 31 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:20,804 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 80 transitions. [2024-11-13 15:01:20,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-13 15:01:20,805 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:01:20,805 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:01:20,828 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-13 15:01:21,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-13 15:01:21,005 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:01:21,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:01:21,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1598708821, now seen corresponding path program 15 times [2024-11-13 15:01:21,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:01:21,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040166924] [2024-11-13 15:01:21,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:01:21,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:01:21,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:01:21,299 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 7 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:21,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:01:21,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040166924] [2024-11-13 15:01:21,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040166924] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:01:21,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399970869] [2024-11-13 15:01:21,300 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 15:01:21,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:01:21,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:01:21,303 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:01:21,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-13 15:01:21,376 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-13 15:01:21,376 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:01:21,379 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-13 15:01:21,380 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:01:21,497 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:21,497 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:01:22,112 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:22,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399970869] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:01:22,112 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:01:22,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 17] total 32 [2024-11-13 15:01:22,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453898571] [2024-11-13 15:01:22,113 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:01:22,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-13 15:01:22,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:01:22,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-13 15:01:22,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=831, Unknown=0, NotChecked=0, Total=992 [2024-11-13 15:01:22,114 INFO L87 Difference]: Start difference. First operand 59 states and 80 transitions. Second operand has 32 states, 32 states have (on average 1.25) internal successors, (40), 32 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) [2024-11-13 15:01:23,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:01:23,998 INFO L93 Difference]: Finished difference Result 106 states and 137 transitions. [2024-11-13 15:01:23,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-11-13 15:01:23,999 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.25) internal successors, (40), 32 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) Word has length 21 [2024-11-13 15:01:23,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:01:23,999 INFO L225 Difference]: With dead ends: 106 [2024-11-13 15:01:23,999 INFO L226 Difference]: Without dead ends: 93 [2024-11-13 15:01:24,002 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 563 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=600, Invalid=3306, Unknown=0, NotChecked=0, Total=3906 [2024-11-13 15:01:24,003 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 21 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 15:01:24,003 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 153 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 15:01:24,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-13 15:01:24,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 64. [2024-11-13 15:01:24,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.3333333333333333) internal successors, (84), 63 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:24,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 84 transitions. [2024-11-13 15:01:24,037 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 84 transitions. Word has length 21 [2024-11-13 15:01:24,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:01:24,037 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 84 transitions. [2024-11-13 15:01:24,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.25) internal successors, (40), 32 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) [2024-11-13 15:01:24,037 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 84 transitions. [2024-11-13 15:01:24,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-13 15:01:24,037 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:01:24,037 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:01:24,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-13 15:01:24,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:01:24,238 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:01:24,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:01:24,238 INFO L85 PathProgramCache]: Analyzing trace with hash 2033637617, now seen corresponding path program 16 times [2024-11-13 15:01:24,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:01:24,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399540185] [2024-11-13 15:01:24,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:01:24,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:01:24,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:01:25,029 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:25,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:01:25,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399540185] [2024-11-13 15:01:25,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399540185] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:01:25,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867635502] [2024-11-13 15:01:25,030 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 15:01:25,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:01:25,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:01:25,033 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:01:25,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-13 15:01:25,091 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 15:01:25,092 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:01:25,093 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-13 15:01:25,094 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:01:25,293 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:25,293 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:01:25,811 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:25,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867635502] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:01:25,811 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:01:25,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 11, 11] total 33 [2024-11-13 15:01:25,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625777264] [2024-11-13 15:01:25,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:01:25,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-13 15:01:25,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:01:25,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-13 15:01:25,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=952, Unknown=0, NotChecked=0, Total=1056 [2024-11-13 15:01:25,813 INFO L87 Difference]: Start difference. First operand 64 states and 84 transitions. Second operand has 33 states, 33 states have (on average 1.7878787878787878) internal successors, (59), 33 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) [2024-11-13 15:01:26,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:01:26,342 INFO L93 Difference]: Finished difference Result 76 states and 96 transitions. [2024-11-13 15:01:26,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-13 15:01:26,343 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.7878787878787878) internal successors, (59), 33 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) Word has length 22 [2024-11-13 15:01:26,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:01:26,343 INFO L225 Difference]: With dead ends: 76 [2024-11-13 15:01:26,343 INFO L226 Difference]: Without dead ends: 72 [2024-11-13 15:01:26,344 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=104, Invalid=952, Unknown=0, NotChecked=0, Total=1056 [2024-11-13 15:01:26,344 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 15:01:26,345 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 101 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 15:01:26,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-13 15:01:26,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 63. [2024-11-13 15:01:26,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.3387096774193548) internal successors, (83), 62 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) [2024-11-13 15:01:26,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 83 transitions. [2024-11-13 15:01:26,371 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 83 transitions. Word has length 22 [2024-11-13 15:01:26,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:01:26,371 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 83 transitions. [2024-11-13 15:01:26,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.7878787878787878) internal successors, (59), 33 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) [2024-11-13 15:01:26,371 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 83 transitions. [2024-11-13 15:01:26,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-13 15:01:26,372 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:01:26,372 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:01:26,392 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-13 15:01:26,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:01:26,573 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:01:26,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:01:26,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1380077931, now seen corresponding path program 17 times [2024-11-13 15:01:26,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:01:26,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678127393] [2024-11-13 15:01:26,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:01:26,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:01:26,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:01:26,878 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:26,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:01:26,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678127393] [2024-11-13 15:01:26,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678127393] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:01:26,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79390225] [2024-11-13 15:01:26,879 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 15:01:26,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:01:26,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:01:26,882 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:01:26,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-13 15:01:26,976 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-13 15:01:26,976 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:01:26,977 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-13 15:01:26,978 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:01:27,069 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:27,069 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:01:27,659 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:27,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [79390225] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:01:27,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:01:27,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 19] total 36 [2024-11-13 15:01:27,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729112435] [2024-11-13 15:01:27,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:01:27,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-13 15:01:27,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:01:27,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-13 15:01:27,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=1061, Unknown=0, NotChecked=0, Total=1260 [2024-11-13 15:01:27,661 INFO L87 Difference]: Start difference. First operand 63 states and 83 transitions. Second operand has 36 states, 36 states have (on average 1.2222222222222223) internal successors, (44), 36 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) [2024-11-13 15:01:30,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:01:30,732 INFO L93 Difference]: Finished difference Result 119 states and 154 transitions. [2024-11-13 15:01:30,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2024-11-13 15:01:30,733 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.2222222222222223) internal successors, (44), 36 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) Word has length 23 [2024-11-13 15:01:30,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:01:30,733 INFO L225 Difference]: With dead ends: 119 [2024-11-13 15:01:30,733 INFO L226 Difference]: Without dead ends: 105 [2024-11-13 15:01:30,735 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 908 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=864, Invalid=4836, Unknown=0, NotChecked=0, Total=5700 [2024-11-13 15:01:30,735 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 28 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 15:01:30,735 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 147 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 15:01:30,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-13 15:01:30,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 74. [2024-11-13 15:01:30,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.3287671232876712) internal successors, (97), 73 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) [2024-11-13 15:01:30,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 97 transitions. [2024-11-13 15:01:30,775 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 97 transitions. Word has length 23 [2024-11-13 15:01:30,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:01:30,775 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 97 transitions. [2024-11-13 15:01:30,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.2222222222222223) internal successors, (44), 36 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) [2024-11-13 15:01:30,776 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 97 transitions. [2024-11-13 15:01:30,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-13 15:01:30,776 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:01:30,776 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:01:30,794 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-13 15:01:30,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:01:30,977 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:01:30,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:01:30,977 INFO L85 PathProgramCache]: Analyzing trace with hash -25332687, now seen corresponding path program 18 times [2024-11-13 15:01:30,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:01:30,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24151945] [2024-11-13 15:01:30,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:01:30,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:01:31,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:01:31,850 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:31,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:01:31,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24151945] [2024-11-13 15:01:31,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24151945] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:01:31,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780489290] [2024-11-13 15:01:31,851 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 15:01:31,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:01:31,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:01:31,855 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:01:31,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-13 15:01:31,939 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-13 15:01:31,940 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:01:31,941 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-13 15:01:31,942 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:01:32,200 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:32,201 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:01:33,190 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:33,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780489290] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:01:33,190 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:01:33,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 12, 12] total 38 [2024-11-13 15:01:33,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260155263] [2024-11-13 15:01:33,191 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:01:33,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-13 15:01:33,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:01:33,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-13 15:01:33,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1284, Unknown=0, NotChecked=0, Total=1406 [2024-11-13 15:01:33,192 INFO L87 Difference]: Start difference. First operand 74 states and 97 transitions. Second operand has 38 states, 38 states have (on average 1.736842105263158) internal successors, (66), 38 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:34,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:01:34,071 INFO L93 Difference]: Finished difference Result 87 states and 110 transitions. [2024-11-13 15:01:34,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-13 15:01:34,072 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.736842105263158) internal successors, (66), 38 states have internal predecessors, (66), 0 states have call successors, (0), 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 24 [2024-11-13 15:01:34,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:01:34,073 INFO L225 Difference]: With dead ends: 87 [2024-11-13 15:01:34,073 INFO L226 Difference]: Without dead ends: 83 [2024-11-13 15:01:34,074 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=122, Invalid=1284, Unknown=0, NotChecked=0, Total=1406 [2024-11-13 15:01:34,076 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-13 15:01:34,076 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 111 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-13 15:01:34,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-13 15:01:34,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 73. [2024-11-13 15:01:34,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.3333333333333333) internal successors, (96), 72 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:34,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 96 transitions. [2024-11-13 15:01:34,114 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 96 transitions. Word has length 24 [2024-11-13 15:01:34,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:01:34,114 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 96 transitions. [2024-11-13 15:01:34,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.736842105263158) internal successors, (66), 38 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:34,114 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 96 transitions. [2024-11-13 15:01:34,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-13 15:01:34,115 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:01:34,115 INFO L215 NwaCegarLoop]: trace histogram [12, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:01:34,131 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-13 15:01:34,315 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-13 15:01:34,315 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:01:34,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:01:34,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1292295119, now seen corresponding path program 19 times [2024-11-13 15:01:34,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:01:34,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781581495] [2024-11-13 15:01:34,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:01:34,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:01:34,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:01:34,658 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:34,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:01:34,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781581495] [2024-11-13 15:01:34,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781581495] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:01:34,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303112518] [2024-11-13 15:01:34,659 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 15:01:34,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:01:34,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:01:34,661 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:01:34,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-13 15:01:34,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:01:34,721 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-13 15:01:34,723 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:01:34,781 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:34,781 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:01:35,450 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:35,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303112518] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:01:35,450 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:01:35,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 39 [2024-11-13 15:01:35,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405158772] [2024-11-13 15:01:35,451 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:01:35,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-13 15:01:35,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:01:35,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-13 15:01:35,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=274, Invalid=1208, Unknown=0, NotChecked=0, Total=1482 [2024-11-13 15:01:35,452 INFO L87 Difference]: Start difference. First operand 73 states and 96 transitions. Second operand has 39 states, 39 states have (on average 1.1794871794871795) internal successors, (46), 39 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:38,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:01:38,427 INFO L93 Difference]: Finished difference Result 141 states and 190 transitions. [2024-11-13 15:01:38,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-13 15:01:38,427 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.1794871794871795) internal successors, (46), 39 states have internal predecessors, (46), 0 states have call successors, (0), 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 24 [2024-11-13 15:01:38,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:01:38,428 INFO L225 Difference]: With dead ends: 141 [2024-11-13 15:01:38,428 INFO L226 Difference]: Without dead ends: 137 [2024-11-13 15:01:38,429 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=691, Invalid=2969, Unknown=0, NotChecked=0, Total=3660 [2024-11-13 15:01:38,430 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 94 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 15:01:38,430 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 223 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 514 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 15:01:38,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2024-11-13 15:01:38,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 80. [2024-11-13 15:01:38,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.379746835443038) internal successors, (109), 79 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) [2024-11-13 15:01:38,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 109 transitions. [2024-11-13 15:01:38,486 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 109 transitions. Word has length 24 [2024-11-13 15:01:38,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:01:38,487 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 109 transitions. [2024-11-13 15:01:38,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.1794871794871795) internal successors, (46), 39 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:38,488 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 109 transitions. [2024-11-13 15:01:38,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-13 15:01:38,488 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:01:38,488 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:01:38,506 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-13 15:01:38,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-13 15:01:38,689 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:01:38,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:01:38,689 INFO L85 PathProgramCache]: Analyzing trace with hash -783647915, now seen corresponding path program 20 times [2024-11-13 15:01:38,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:01:38,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462579326] [2024-11-13 15:01:38,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:01:38,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:01:38,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:01:39,066 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 9 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:39,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:01:39,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462579326] [2024-11-13 15:01:39,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462579326] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:01:39,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782794361] [2024-11-13 15:01:39,066 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:01:39,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:01:39,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:01:39,070 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:01:39,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-13 15:01:39,139 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 15:01:39,139 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:01:39,140 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-13 15:01:39,142 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:01:39,223 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:39,223 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:01:39,794 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:39,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782794361] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:01:39,794 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:01:39,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 21, 21] total 40 [2024-11-13 15:01:39,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80642241] [2024-11-13 15:01:39,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:01:39,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-13 15:01:39,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:01:39,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-13 15:01:39,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=1319, Unknown=0, NotChecked=0, Total=1560 [2024-11-13 15:01:39,796 INFO L87 Difference]: Start difference. First operand 80 states and 109 transitions. Second operand has 40 states, 40 states have (on average 1.2) internal successors, (48), 40 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:43,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:01:43,834 INFO L93 Difference]: Finished difference Result 144 states and 188 transitions. [2024-11-13 15:01:43,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2024-11-13 15:01:43,834 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.2) internal successors, (48), 40 states have internal predecessors, (48), 0 states have call successors, (0), 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 [2024-11-13 15:01:43,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:01:43,835 INFO L225 Difference]: With dead ends: 144 [2024-11-13 15:01:43,835 INFO L226 Difference]: Without dead ends: 129 [2024-11-13 15:01:43,837 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1387 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1204, Invalid=6806, Unknown=0, NotChecked=0, Total=8010 [2024-11-13 15:01:43,837 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 36 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 15:01:43,838 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 134 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 15:01:43,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-11-13 15:01:43,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 86. [2024-11-13 15:01:43,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.3411764705882352) internal successors, (114), 85 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:43,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 114 transitions. [2024-11-13 15:01:43,892 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 114 transitions. Word has length 25 [2024-11-13 15:01:43,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:01:43,892 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 114 transitions. [2024-11-13 15:01:43,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.2) internal successors, (48), 40 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:43,893 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 114 transitions. [2024-11-13 15:01:43,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-13 15:01:43,895 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:01:43,895 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:01:43,911 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-13 15:01:44,099 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-13 15:01:44,099 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:01:44,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:01:44,100 INFO L85 PathProgramCache]: Analyzing trace with hash -248559119, now seen corresponding path program 21 times [2024-11-13 15:01:44,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:01:44,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607046632] [2024-11-13 15:01:44,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:01:44,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:01:44,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:01:44,964 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:44,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:01:44,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607046632] [2024-11-13 15:01:44,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607046632] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:01:44,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702634769] [2024-11-13 15:01:44,964 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 15:01:44,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:01:44,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:01:44,966 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:01:44,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-13 15:01:45,028 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-13 15:01:45,029 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:01:45,030 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-13 15:01:45,031 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:01:45,329 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:45,329 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:01:46,180 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:46,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702634769] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:01:46,180 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:01:46,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 13, 13] total 42 [2024-11-13 15:01:46,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739528679] [2024-11-13 15:01:46,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:01:46,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-13 15:01:46,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:01:46,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-13 15:01:46,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=1586, Unknown=0, NotChecked=0, Total=1722 [2024-11-13 15:01:46,182 INFO L87 Difference]: Start difference. First operand 86 states and 114 transitions. Second operand has 42 states, 42 states have (on average 1.7142857142857142) internal successors, (72), 42 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:47,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:01:47,020 INFO L93 Difference]: Finished difference Result 100 states and 128 transitions. [2024-11-13 15:01:47,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-13 15:01:47,021 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.7142857142857142) internal successors, (72), 42 states have internal predecessors, (72), 0 states have call successors, (0), 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 26 [2024-11-13 15:01:47,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:01:47,022 INFO L225 Difference]: With dead ends: 100 [2024-11-13 15:01:47,022 INFO L226 Difference]: Without dead ends: 96 [2024-11-13 15:01:47,023 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=136, Invalid=1586, Unknown=0, NotChecked=0, Total=1722 [2024-11-13 15:01:47,023 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 15:01:47,023 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 121 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-13 15:01:47,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-11-13 15:01:47,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 85. [2024-11-13 15:01:47,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.3452380952380953) internal successors, (113), 84 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) [2024-11-13 15:01:47,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 113 transitions. [2024-11-13 15:01:47,071 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 113 transitions. Word has length 26 [2024-11-13 15:01:47,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:01:47,071 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 113 transitions. [2024-11-13 15:01:47,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 1.7142857142857142) internal successors, (72), 42 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:47,072 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 113 transitions. [2024-11-13 15:01:47,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-13 15:01:47,072 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:01:47,072 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:01:47,091 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-13 15:01:47,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-13 15:01:47,273 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:01:47,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:01:47,273 INFO L85 PathProgramCache]: Analyzing trace with hash 886267285, now seen corresponding path program 22 times [2024-11-13 15:01:47,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:01:47,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104428975] [2024-11-13 15:01:47,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:01:47,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:01:47,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:01:47,678 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 10 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:47,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:01:47,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104428975] [2024-11-13 15:01:47,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104428975] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:01:47,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385279051] [2024-11-13 15:01:47,678 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 15:01:47,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:01:47,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:01:47,680 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:01:47,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-13 15:01:47,732 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 15:01:47,732 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:01:47,733 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-13 15:01:47,734 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:01:47,817 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:47,817 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:01:48,509 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:48,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385279051] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:01:48,509 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:01:48,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23, 23] total 44 [2024-11-13 15:01:48,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901311501] [2024-11-13 15:01:48,509 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:01:48,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-13 15:01:48,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:01:48,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-13 15:01:48,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=287, Invalid=1605, Unknown=0, NotChecked=0, Total=1892 [2024-11-13 15:01:48,511 INFO L87 Difference]: Start difference. First operand 85 states and 113 transitions. Second operand has 44 states, 44 states have (on average 1.1818181818181819) internal successors, (52), 44 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:54,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:01:54,372 INFO L93 Difference]: Finished difference Result 159 states and 208 transitions. [2024-11-13 15:01:54,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2024-11-13 15:01:54,372 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.1818181818181819) internal successors, (52), 44 states have internal predecessors, (52), 0 states have call successors, (0), 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 [2024-11-13 15:01:54,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:01:54,373 INFO L225 Difference]: With dead ends: 159 [2024-11-13 15:01:54,374 INFO L226 Difference]: Without dead ends: 143 [2024-11-13 15:01:54,376 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2030 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=1633, Invalid=9287, Unknown=0, NotChecked=0, Total=10920 [2024-11-13 15:01:54,376 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 45 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 15:01:54,376 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 162 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 15:01:54,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2024-11-13 15:01:54,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 98. [2024-11-13 15:01:54,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 1.3402061855670102) internal successors, (130), 97 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:54,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 130 transitions. [2024-11-13 15:01:54,440 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 130 transitions. Word has length 27 [2024-11-13 15:01:54,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:01:54,440 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 130 transitions. [2024-11-13 15:01:54,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.1818181818181819) internal successors, (52), 44 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:54,441 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 130 transitions. [2024-11-13 15:01:54,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-13 15:01:54,441 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:01:54,441 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:01:54,454 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-13 15:01:54,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-13 15:01:54,642 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:01:54,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:01:54,642 INFO L85 PathProgramCache]: Analyzing trace with hash -289475279, now seen corresponding path program 23 times [2024-11-13 15:01:54,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:01:54,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054609960] [2024-11-13 15:01:54,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:01:54,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:01:54,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:01:55,724 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:55,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:01:55,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054609960] [2024-11-13 15:01:55,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054609960] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:01:55,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874771158] [2024-11-13 15:01:55,725 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 15:01:55,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:01:55,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:01:55,726 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:01:55,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-13 15:01:55,846 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-13 15:01:55,846 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:01:55,847 INFO L255 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-13 15:01:55,848 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:01:56,150 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:56,150 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:01:57,067 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:57,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874771158] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:01:57,068 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:01:57,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 14, 14] total 45 [2024-11-13 15:01:57,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635624206] [2024-11-13 15:01:57,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:01:57,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-13 15:01:57,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:01:57,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-13 15:01:57,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=1834, Unknown=0, NotChecked=0, Total=1980 [2024-11-13 15:01:57,069 INFO L87 Difference]: Start difference. First operand 98 states and 130 transitions. Second operand has 45 states, 45 states have (on average 1.711111111111111) internal successors, (77), 45 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) [2024-11-13 15:01:58,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:01:58,089 INFO L93 Difference]: Finished difference Result 113 states and 145 transitions. [2024-11-13 15:01:58,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-13 15:01:58,089 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.711111111111111) internal successors, (77), 45 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) Word has length 28 [2024-11-13 15:01:58,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:01:58,090 INFO L225 Difference]: With dead ends: 113 [2024-11-13 15:01:58,091 INFO L226 Difference]: Without dead ends: 109 [2024-11-13 15:01:58,091 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 506 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=146, Invalid=1834, Unknown=0, NotChecked=0, Total=1980 [2024-11-13 15:01:58,091 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-13 15:01:58,092 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 121 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 568 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-13 15:01:58,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-11-13 15:01:58,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 97. [2024-11-13 15:01:58,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.34375) internal successors, (129), 96 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) [2024-11-13 15:01:58,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 129 transitions. [2024-11-13 15:01:58,163 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 129 transitions. Word has length 28 [2024-11-13 15:01:58,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:01:58,163 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 129 transitions. [2024-11-13 15:01:58,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.711111111111111) internal successors, (77), 45 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) [2024-11-13 15:01:58,163 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 129 transitions. [2024-11-13 15:01:58,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-13 15:01:58,164 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:01:58,164 INFO L215 NwaCegarLoop]: trace histogram [15, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:01:58,184 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-13 15:01:58,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-13 15:01:58,364 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:01:58,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:01:58,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1657419377, now seen corresponding path program 24 times [2024-11-13 15:01:58,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:01:58,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47100777] [2024-11-13 15:01:58,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:01:58,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:01:58,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:01:58,760 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:58,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:01:58,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47100777] [2024-11-13 15:01:58,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47100777] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:01:58,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880483198] [2024-11-13 15:01:58,761 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 15:01:58,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:01:58,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:01:58,762 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:01:58,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-13 15:01:58,868 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-11-13 15:01:58,868 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:01:58,869 INFO L255 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-13 15:01:58,870 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:01:58,918 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:58,918 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:01:59,711 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:59,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [880483198] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:01:59,711 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:01:59,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2024-11-13 15:01:59,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536796902] [2024-11-13 15:01:59,711 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:01:59,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-13 15:01:59,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:01:59,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-13 15:01:59,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=389, Invalid=1773, Unknown=0, NotChecked=0, Total=2162 [2024-11-13 15:01:59,712 INFO L87 Difference]: Start difference. First operand 97 states and 129 transitions. Second operand has 47 states, 47 states have (on average 1.148936170212766) internal successors, (54), 47 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:05,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:02:05,228 INFO L93 Difference]: Finished difference Result 192 states and 260 transitions. [2024-11-13 15:02:05,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-11-13 15:02:05,228 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.148936170212766) internal successors, (54), 47 states have internal predecessors, (54), 0 states have call successors, (0), 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 28 [2024-11-13 15:02:05,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:02:05,229 INFO L225 Difference]: With dead ends: 192 [2024-11-13 15:02:05,229 INFO L226 Difference]: Without dead ends: 188 [2024-11-13 15:02:05,230 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 636 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=1059, Invalid=4793, Unknown=0, NotChecked=0, Total=5852 [2024-11-13 15:02:05,231 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 165 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 721 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 15:02:05,231 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 288 Invalid, 806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 721 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 15:02:05,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2024-11-13 15:02:05,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 104. [2024-11-13 15:02:05,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.3786407766990292) internal successors, (142), 103 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:05,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 142 transitions. [2024-11-13 15:02:05,328 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 142 transitions. Word has length 28 [2024-11-13 15:02:05,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:02:05,328 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 142 transitions. [2024-11-13 15:02:05,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.148936170212766) internal successors, (54), 47 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:05,328 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 142 transitions. [2024-11-13 15:02:05,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-13 15:02:05,328 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:02:05,328 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:02:05,344 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-11-13 15:02:05,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-13 15:02:05,529 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:02:05,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:02:05,529 INFO L85 PathProgramCache]: Analyzing trace with hash -382133675, now seen corresponding path program 25 times [2024-11-13 15:02:05,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:02:05,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523272781] [2024-11-13 15:02:05,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:02:05,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:02:05,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:02:05,957 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 11 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:02:05,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:02:05,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523272781] [2024-11-13 15:02:05,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523272781] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:02:05,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212726941] [2024-11-13 15:02:05,958 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 15:02:05,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:02:05,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:02:05,960 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:02:05,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-13 15:02:06,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:02:06,030 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-13 15:02:06,031 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:02:06,140 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:02:06,140 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:02:06,956 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:02:06,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1212726941] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:02:06,957 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:02:06,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 25, 25] total 48 [2024-11-13 15:02:06,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583194571] [2024-11-13 15:02:06,957 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:02:06,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-13 15:02:06,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:02:06,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-13 15:02:06,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=337, Invalid=1919, Unknown=0, NotChecked=0, Total=2256 [2024-11-13 15:02:06,958 INFO L87 Difference]: Start difference. First operand 104 states and 142 transitions. Second operand has 48 states, 48 states have (on average 1.1666666666666667) internal successors, (56), 48 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) [2024-11-13 15:02:14,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:02:14,496 INFO L93 Difference]: Finished difference Result 187 states and 246 transitions. [2024-11-13 15:02:14,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2024-11-13 15:02:14,496 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.1666666666666667) internal successors, (56), 48 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 29 [2024-11-13 15:02:14,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:02:14,497 INFO L225 Difference]: With dead ends: 187 [2024-11-13 15:02:14,497 INFO L226 Difference]: Without dead ends: 170 [2024-11-13 15:02:14,498 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2870 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=2165, Invalid=12355, Unknown=0, NotChecked=0, Total=14520 [2024-11-13 15:02:14,499 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 55 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 15:02:14,499 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 193 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 639 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 15:02:14,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-11-13 15:02:14,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 111. [2024-11-13 15:02:14,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 1.3454545454545455) internal successors, (148), 110 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:14,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 148 transitions. [2024-11-13 15:02:14,595 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 148 transitions. Word has length 29 [2024-11-13 15:02:14,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:02:14,595 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 148 transitions. [2024-11-13 15:02:14,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.1666666666666667) internal successors, (56), 48 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) [2024-11-13 15:02:14,595 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 148 transitions. [2024-11-13 15:02:14,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-13 15:02:14,595 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:02:14,596 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:02:14,609 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-13 15:02:14,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-13 15:02:14,796 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:02:14,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:02:14,797 INFO L85 PathProgramCache]: Analyzing trace with hash -694338831, now seen corresponding path program 26 times [2024-11-13 15:02:14,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:02:14,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650798725] [2024-11-13 15:02:14,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:02:14,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:02:14,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:02:15,835 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:02:15,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:02:15,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650798725] [2024-11-13 15:02:15,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650798725] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:02:15,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747185927] [2024-11-13 15:02:15,835 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:02:15,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:02:15,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:02:15,837 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:02:15,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-13 15:02:15,889 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 15:02:15,889 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:02:15,891 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-13 15:02:15,892 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:02:16,245 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:02:16,245 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:02:17,601 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:02:17,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747185927] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:02:17,601 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:02:17,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 15, 15] total 50 [2024-11-13 15:02:17,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540933050] [2024-11-13 15:02:17,601 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:02:17,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-13 15:02:17,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:02:17,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-13 15:02:17,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=2286, Unknown=0, NotChecked=0, Total=2450 [2024-11-13 15:02:17,603 INFO L87 Difference]: Start difference. First operand 111 states and 148 transitions. Second operand has 50 states, 50 states have (on average 1.68) internal successors, (84), 50 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:18,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:02:18,866 INFO L93 Difference]: Finished difference Result 127 states and 164 transitions. [2024-11-13 15:02:18,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-13 15:02:18,866 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.68) internal successors, (84), 50 states have internal predecessors, (84), 0 states have call successors, (0), 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 30 [2024-11-13 15:02:18,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:02:18,868 INFO L225 Difference]: With dead ends: 127 [2024-11-13 15:02:18,868 INFO L226 Difference]: Without dead ends: 123 [2024-11-13 15:02:18,868 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 639 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=164, Invalid=2286, Unknown=0, NotChecked=0, Total=2450 [2024-11-13 15:02:18,869 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:02:18,869 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 111 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-13 15:02:18,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-11-13 15:02:18,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 110. [2024-11-13 15:02:18,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 1.348623853211009) internal successors, (147), 109 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) [2024-11-13 15:02:18,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 147 transitions. [2024-11-13 15:02:18,961 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 147 transitions. Word has length 30 [2024-11-13 15:02:18,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:02:18,961 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 147 transitions. [2024-11-13 15:02:18,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.68) internal successors, (84), 50 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:18,962 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 147 transitions. [2024-11-13 15:02:18,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-13 15:02:18,962 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:02:18,962 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:02:18,975 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-13 15:02:19,162 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:02:19,163 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:02:19,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:02:19,163 INFO L85 PathProgramCache]: Analyzing trace with hash -48001899, now seen corresponding path program 27 times [2024-11-13 15:02:19,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:02:19,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342324115] [2024-11-13 15:02:19,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:02:19,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:02:19,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:02:19,584 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 12 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:02:19,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:02:19,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342324115] [2024-11-13 15:02:19,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342324115] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:02:19,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491239164] [2024-11-13 15:02:19,585 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 15:02:19,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:02:19,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:02:19,587 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:02:19,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-13 15:02:19,680 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-13 15:02:19,680 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:02:19,681 INFO L255 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-13 15:02:19,682 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:02:19,765 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:02:19,765 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:02:20,737 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:02:20,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491239164] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:02:20,737 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:02:20,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 27, 27] total 52 [2024-11-13 15:02:20,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070344602] [2024-11-13 15:02:20,738 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:02:20,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-13 15:02:20,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:02:20,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-13 15:02:20,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=391, Invalid=2261, Unknown=0, NotChecked=0, Total=2652 [2024-11-13 15:02:20,739 INFO L87 Difference]: Start difference. First operand 110 states and 147 transitions. Second operand has 52 states, 52 states have (on average 1.1538461538461537) internal successors, (60), 52 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:30,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:02:30,950 INFO L93 Difference]: Finished difference Result 204 states and 269 transitions. [2024-11-13 15:02:30,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2024-11-13 15:02:30,950 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.1538461538461537) internal successors, (60), 52 states have internal predecessors, (60), 0 states have call successors, (0), 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 [2024-11-13 15:02:30,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:02:30,951 INFO L225 Difference]: With dead ends: 204 [2024-11-13 15:02:30,951 INFO L226 Difference]: Without dead ends: 186 [2024-11-13 15:02:30,953 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3943 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=2815, Invalid=16091, Unknown=0, NotChecked=0, Total=18906 [2024-11-13 15:02:30,953 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 66 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 701 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 15:02:30,954 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 212 Invalid, 768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 701 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 15:02:30,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2024-11-13 15:02:31,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 125. [2024-11-13 15:02:31,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 1.346774193548387) internal successors, (167), 124 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) [2024-11-13 15:02:31,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 167 transitions. [2024-11-13 15:02:31,081 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 167 transitions. Word has length 31 [2024-11-13 15:02:31,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:02:31,081 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 167 transitions. [2024-11-13 15:02:31,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.1538461538461537) internal successors, (60), 52 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:31,082 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 167 transitions. [2024-11-13 15:02:31,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-13 15:02:31,082 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:02:31,082 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:02:31,101 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-13 15:02:31,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-11-13 15:02:31,283 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:02:31,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:02:31,283 INFO L85 PathProgramCache]: Analyzing trace with hash 570553905, now seen corresponding path program 28 times [2024-11-13 15:02:31,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:02:31,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061706027] [2024-11-13 15:02:31,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:02:31,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:02:31,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:02:32,445 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:02:32,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:02:32,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061706027] [2024-11-13 15:02:32,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061706027] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:02:32,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070748942] [2024-11-13 15:02:32,446 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 15:02:32,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:02:32,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:02:32,447 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:02:32,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-13 15:02:32,621 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 15:02:32,621 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:02:32,622 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-13 15:02:32,623 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:02:33,005 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:02:33,005 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:02:34,374 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:02:34,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2070748942] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:02:34,374 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:02:34,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 16, 16] total 54 [2024-11-13 15:02:34,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965551739] [2024-11-13 15:02:34,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:02:34,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-11-13 15:02:34,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:02:34,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-11-13 15:02:34,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=2684, Unknown=0, NotChecked=0, Total=2862 [2024-11-13 15:02:34,375 INFO L87 Difference]: Start difference. First operand 125 states and 167 transitions. Second operand has 54 states, 54 states have (on average 1.6666666666666667) internal successors, (90), 54 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:35,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:02:35,919 INFO L93 Difference]: Finished difference Result 142 states and 184 transitions. [2024-11-13 15:02:35,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-13 15:02:35,919 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.6666666666666667) internal successors, (90), 54 states have internal predecessors, (90), 0 states have call successors, (0), 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 32 [2024-11-13 15:02:35,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:02:35,920 INFO L225 Difference]: With dead ends: 142 [2024-11-13 15:02:35,920 INFO L226 Difference]: Without dead ends: 138 [2024-11-13 15:02:35,920 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 751 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=178, Invalid=2684, Unknown=0, NotChecked=0, Total=2862 [2024-11-13 15:02:35,921 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 830 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-13 15:02:35,921 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 151 Invalid, 830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 830 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-13 15:02:35,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2024-11-13 15:02:36,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 124. [2024-11-13 15:02:36,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 1.3495934959349594) internal successors, (166), 123 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) [2024-11-13 15:02:36,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 166 transitions. [2024-11-13 15:02:36,060 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 166 transitions. Word has length 32 [2024-11-13 15:02:36,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:02:36,060 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 166 transitions. [2024-11-13 15:02:36,061 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 1.6666666666666667) internal successors, (90), 54 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:36,061 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 166 transitions. [2024-11-13 15:02:36,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-13 15:02:36,061 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:02:36,061 INFO L215 NwaCegarLoop]: trace histogram [18, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:02:36,073 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-11-13 15:02:36,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-11-13 15:02:36,262 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:02:36,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:02:36,262 INFO L85 PathProgramCache]: Analyzing trace with hash -940016079, now seen corresponding path program 29 times [2024-11-13 15:02:36,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:02:36,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626489942] [2024-11-13 15:02:36,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:02:36,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:02:36,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:02:36,697 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:02:36,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:02:36,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626489942] [2024-11-13 15:02:36,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626489942] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:02:36,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682550156] [2024-11-13 15:02:36,697 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 15:02:36,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:02:36,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:02:36,699 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:02:36,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-13 15:02:36,860 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-11-13 15:02:36,860 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:02:36,862 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-13 15:02:36,862 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:02:36,916 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:02:36,916 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:02:38,002 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:02:38,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682550156] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:02:38,002 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:02:38,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 55 [2024-11-13 15:02:38,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942845865] [2024-11-13 15:02:38,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:02:38,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-11-13 15:02:38,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:02:38,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-11-13 15:02:38,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=524, Invalid=2446, Unknown=0, NotChecked=0, Total=2970 [2024-11-13 15:02:38,004 INFO L87 Difference]: Start difference. First operand 124 states and 166 transitions. Second operand has 55 states, 55 states have (on average 1.1272727272727272) internal successors, (62), 55 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:48,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:02:48,035 INFO L93 Difference]: Finished difference Result 250 states and 339 transitions. [2024-11-13 15:02:48,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2024-11-13 15:02:48,035 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 1.1272727272727272) internal successors, (62), 55 states have internal predecessors, (62), 0 states have call successors, (0), 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 32 [2024-11-13 15:02:48,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:02:48,036 INFO L225 Difference]: With dead ends: 250 [2024-11-13 15:02:48,036 INFO L226 Difference]: Without dead ends: 246 [2024-11-13 15:02:48,036 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1008 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=1525, Invalid=7217, Unknown=0, NotChecked=0, Total=8742 [2024-11-13 15:02:48,036 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 231 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 915 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 1027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 15:02:48,037 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 352 Invalid, 1027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 915 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 15:02:48,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2024-11-13 15:02:48,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 131. [2024-11-13 15:02:48,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 1.376923076923077) internal successors, (179), 130 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) [2024-11-13 15:02:48,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 179 transitions. [2024-11-13 15:02:48,170 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 179 transitions. Word has length 32 [2024-11-13 15:02:48,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:02:48,170 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 179 transitions. [2024-11-13 15:02:48,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 1.1272727272727272) internal successors, (62), 55 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:48,170 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 179 transitions. [2024-11-13 15:02:48,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-13 15:02:48,170 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:02:48,170 INFO L215 NwaCegarLoop]: trace histogram [13, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:02:48,184 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-13 15:02:48,371 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:02:48,371 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:02:48,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:02:48,371 INFO L85 PathProgramCache]: Analyzing trace with hash 508967253, now seen corresponding path program 30 times [2024-11-13 15:02:48,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:02:48,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484138819] [2024-11-13 15:02:48,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:02:48,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:02:48,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:02:48,898 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 13 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:02:48,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:02:48,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484138819] [2024-11-13 15:02:48,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484138819] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:02:48,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780683145] [2024-11-13 15:02:48,898 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 15:02:48,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:02:48,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:02:48,900 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:02:48,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-13 15:02:49,012 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2024-11-13 15:02:49,012 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:02:49,014 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-13 15:02:49,014 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:02:49,119 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:02:49,120 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:02:50,298 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:02:50,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780683145] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:02:50,299 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:02:50,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 29, 29] total 56 [2024-11-13 15:02:50,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119095620] [2024-11-13 15:02:50,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:02:50,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-11-13 15:02:50,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:02:50,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-11-13 15:02:50,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=449, Invalid=2631, Unknown=0, NotChecked=0, Total=3080 [2024-11-13 15:02:50,300 INFO L87 Difference]: Start difference. First operand 131 states and 179 transitions. Second operand has 56 states, 56 states have (on average 1.1428571428571428) internal successors, (64), 56 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:03:03,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:03:03,983 INFO L93 Difference]: Finished difference Result 235 states and 311 transitions. [2024-11-13 15:03:03,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2024-11-13 15:03:03,983 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 1.1428571428571428) internal successors, (64), 56 states have internal predecessors, (64), 0 states have call successors, (0), 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 [2024-11-13 15:03:03,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:03:03,984 INFO L225 Difference]: With dead ends: 235 [2024-11-13 15:03:03,984 INFO L226 Difference]: Without dead ends: 216 [2024-11-13 15:03:03,985 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5288 ImplicationChecksByTransitivity, 14.2s TimeCoverageRelationStatistics Valid=3599, Invalid=20581, Unknown=0, NotChecked=0, Total=24180 [2024-11-13 15:03:03,985 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 78 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 753 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 15:03:03,986 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 210 Invalid, 832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 753 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 15:03:03,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2024-11-13 15:03:04,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 139. [2024-11-13 15:03:04,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 138 states have (on average 1.3478260869565217) internal successors, (186), 138 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:03:04,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 186 transitions. [2024-11-13 15:03:04,142 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 186 transitions. Word has length 33 [2024-11-13 15:03:04,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:03:04,142 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 186 transitions. [2024-11-13 15:03:04,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 1.1428571428571428) internal successors, (64), 56 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:03:04,142 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 186 transitions. [2024-11-13 15:03:04,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-13 15:03:04,142 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:03:04,142 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:03:04,155 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-11-13 15:03:04,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:03:04,343 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:03:04,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:03:04,343 INFO L85 PathProgramCache]: Analyzing trace with hash -2059359247, now seen corresponding path program 31 times [2024-11-13 15:03:04,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:03:04,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737694932] [2024-11-13 15:03:04,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:03:04,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:03:04,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:03:05,547 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:03:05,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:03:05,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737694932] [2024-11-13 15:03:05,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737694932] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:03:05,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652788770] [2024-11-13 15:03:05,547 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 15:03:05,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:03:05,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:03:05,549 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:03:05,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-13 15:03:05,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:03:05,722 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-11-13 15:03:05,723 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:03:06,164 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:03:06,164 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:03:07,886 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:03:07,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [652788770] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:03:07,886 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:03:07,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 17, 17] total 58 [2024-11-13 15:03:07,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167294347] [2024-11-13 15:03:07,887 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:03:07,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-11-13 15:03:07,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:03:07,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-11-13 15:03:07,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=3114, Unknown=0, NotChecked=0, Total=3306 [2024-11-13 15:03:07,888 INFO L87 Difference]: Start difference. First operand 139 states and 186 transitions. Second operand has 58 states, 58 states have (on average 1.6551724137931034) internal successors, (96), 58 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:03:09,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:03:09,944 INFO L93 Difference]: Finished difference Result 157 states and 204 transitions. [2024-11-13 15:03:09,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-13 15:03:09,945 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 1.6551724137931034) internal successors, (96), 58 states have internal predecessors, (96), 0 states have call successors, (0), 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 34 [2024-11-13 15:03:09,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:03:09,946 INFO L225 Difference]: With dead ends: 157 [2024-11-13 15:03:09,946 INFO L226 Difference]: Without dead ends: 153 [2024-11-13 15:03:09,946 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 872 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=192, Invalid=3114, Unknown=0, NotChecked=0, Total=3306 [2024-11-13 15:03:09,947 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 976 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-13 15:03:09,947 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 166 Invalid, 976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 976 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-13 15:03:09,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2024-11-13 15:03:10,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 138. [2024-11-13 15:03:10,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 137 states have (on average 1.3503649635036497) internal successors, (185), 137 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) [2024-11-13 15:03:10,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 185 transitions. [2024-11-13 15:03:10,156 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 185 transitions. Word has length 34 [2024-11-13 15:03:10,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:03:10,156 INFO L471 AbstractCegarLoop]: Abstraction has 138 states and 185 transitions. [2024-11-13 15:03:10,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 1.6551724137931034) internal successors, (96), 58 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:03:10,157 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 185 transitions. [2024-11-13 15:03:10,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-13 15:03:10,157 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:03:10,157 INFO L215 NwaCegarLoop]: trace histogram [14, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:03:10,177 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-11-13 15:03:10,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:03:10,357 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:03:10,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:03:10,358 INFO L85 PathProgramCache]: Analyzing trace with hash 586038165, now seen corresponding path program 32 times [2024-11-13 15:03:10,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:03:10,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110498051] [2024-11-13 15:03:10,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:03:10,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:03:10,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:03:10,840 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 14 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:03:10,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:03:10,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110498051] [2024-11-13 15:03:10,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110498051] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:03:10,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571085093] [2024-11-13 15:03:10,840 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:03:10,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:03:10,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:03:10,843 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:03:10,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-13 15:03:10,901 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 15:03:10,901 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:03:10,903 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-13 15:03:10,904 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:03:11,029 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:03:11,030 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:03:12,302 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:03:12,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571085093] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:03:12,302 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:03:12,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 31, 31] total 60 [2024-11-13 15:03:12,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752025995] [2024-11-13 15:03:12,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:03:12,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-11-13 15:03:12,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:03:12,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-11-13 15:03:12,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=511, Invalid=3029, Unknown=0, NotChecked=0, Total=3540 [2024-11-13 15:03:12,303 INFO L87 Difference]: Start difference. First operand 138 states and 185 transitions. Second operand has 60 states, 60 states have (on average 1.1333333333333333) internal successors, (68), 60 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:03:29,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:03:29,945 INFO L93 Difference]: Finished difference Result 254 states and 337 transitions. [2024-11-13 15:03:29,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2024-11-13 15:03:29,945 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 1.1333333333333333) internal successors, (68), 60 states have internal predecessors, (68), 0 states have call successors, (0), 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 [2024-11-13 15:03:29,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:03:29,946 INFO L225 Difference]: With dead ends: 254 [2024-11-13 15:03:29,946 INFO L226 Difference]: Without dead ends: 234 [2024-11-13 15:03:29,948 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6947 ImplicationChecksByTransitivity, 17.9s TimeCoverageRelationStatistics Valid=4534, Invalid=25916, Unknown=0, NotChecked=0, Total=30450 [2024-11-13 15:03:29,948 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 91 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 890 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 15:03:29,948 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 234 Invalid, 982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 890 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 15:03:29,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2024-11-13 15:03:30,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 155. [2024-11-13 15:03:30,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 154 states have (on average 1.3506493506493507) internal successors, (208), 154 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) [2024-11-13 15:03:30,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 208 transitions. [2024-11-13 15:03:30,200 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 208 transitions. Word has length 35 [2024-11-13 15:03:30,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:03:30,200 INFO L471 AbstractCegarLoop]: Abstraction has 155 states and 208 transitions. [2024-11-13 15:03:30,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 1.1333333333333333) internal successors, (68), 60 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:03:30,200 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 208 transitions. [2024-11-13 15:03:30,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-13 15:03:30,201 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:03:30,201 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:03:30,216 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-11-13 15:03:30,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:03:30,401 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:03:30,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:03:30,402 INFO L85 PathProgramCache]: Analyzing trace with hash 2030466865, now seen corresponding path program 33 times [2024-11-13 15:03:30,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:03:30,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028995866] [2024-11-13 15:03:30,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:03:30,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:03:30,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:03:31,836 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:03:31,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:03:31,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028995866] [2024-11-13 15:03:31,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028995866] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:03:31,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226867813] [2024-11-13 15:03:31,837 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 15:03:31,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:03:31,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:03:31,838 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:03:31,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-13 15:03:31,995 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-11-13 15:03:31,995 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:03:31,997 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-11-13 15:03:31,999 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:03:32,539 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:03:32,539 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:03:34,820 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:03:34,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226867813] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:03:34,820 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:03:34,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 18, 18] total 62 [2024-11-13 15:03:34,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821410851] [2024-11-13 15:03:34,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:03:34,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-11-13 15:03:34,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:03:34,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-11-13 15:03:34,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=3576, Unknown=0, NotChecked=0, Total=3782 [2024-11-13 15:03:34,822 INFO L87 Difference]: Start difference. First operand 155 states and 208 transitions. Second operand has 62 states, 62 states have (on average 1.6451612903225807) internal successors, (102), 62 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:03:37,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:03:37,025 INFO L93 Difference]: Finished difference Result 174 states and 227 transitions. [2024-11-13 15:03:37,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-13 15:03:37,025 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 1.6451612903225807) internal successors, (102), 62 states have internal predecessors, (102), 0 states have call successors, (0), 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 36 [2024-11-13 15:03:37,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:03:37,026 INFO L225 Difference]: With dead ends: 174 [2024-11-13 15:03:37,026 INFO L226 Difference]: Without dead ends: 170 [2024-11-13 15:03:37,027 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1002 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=206, Invalid=3576, Unknown=0, NotChecked=0, Total=3782 [2024-11-13 15:03:37,027 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 1073 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 1073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-13 15:03:37,027 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 171 Invalid, 1073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1073 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-13 15:03:37,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-11-13 15:03:37,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 154. [2024-11-13 15:03:37,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 1.3529411764705883) internal successors, (207), 153 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) [2024-11-13 15:03:37,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 207 transitions. [2024-11-13 15:03:37,276 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 207 transitions. Word has length 36 [2024-11-13 15:03:37,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:03:37,276 INFO L471 AbstractCegarLoop]: Abstraction has 154 states and 207 transitions. [2024-11-13 15:03:37,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 1.6451612903225807) internal successors, (102), 62 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:03:37,276 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 207 transitions. [2024-11-13 15:03:37,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-13 15:03:37,277 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:03:37,277 INFO L215 NwaCegarLoop]: trace histogram [21, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:03:37,290 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-11-13 15:03:37,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-13 15:03:37,477 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:03:37,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:03:37,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1788297329, now seen corresponding path program 34 times [2024-11-13 15:03:37,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:03:37,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171241794] [2024-11-13 15:03:37,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:03:37,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:03:37,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:03:38,031 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 0 proven. 259 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:03:38,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:03:38,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171241794] [2024-11-13 15:03:38,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171241794] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:03:38,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694699045] [2024-11-13 15:03:38,032 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 15:03:38,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:03:38,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:03:38,037 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:03:38,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-13 15:03:38,098 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 15:03:38,098 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:03:38,099 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-11-13 15:03:38,100 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:03:38,183 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 0 proven. 259 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:03:38,183 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:03:39,674 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 0 proven. 259 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:03:39,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694699045] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:03:39,675 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:03:39,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 63 [2024-11-13 15:03:39,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007813323] [2024-11-13 15:03:39,675 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:03:39,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-11-13 15:03:39,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:03:39,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-11-13 15:03:39,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=679, Invalid=3227, Unknown=0, NotChecked=0, Total=3906 [2024-11-13 15:03:39,677 INFO L87 Difference]: Start difference. First operand 154 states and 207 transitions. Second operand has 63 states, 63 states have (on average 1.1111111111111112) internal successors, (70), 63 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:03:58,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:03:58,858 INFO L93 Difference]: Finished difference Result 315 states and 427 transitions. [2024-11-13 15:03:58,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2024-11-13 15:03:58,858 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 1.1111111111111112) internal successors, (70), 63 states have internal predecessors, (70), 0 states have call successors, (0), 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 36 [2024-11-13 15:03:58,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:03:58,859 INFO L225 Difference]: With dead ends: 315 [2024-11-13 15:03:58,859 INFO L226 Difference]: Without dead ends: 311 [2024-11-13 15:03:58,860 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1518 ImplicationChecksByTransitivity, 19.1s TimeCoverageRelationStatistics Valid=2100, Invalid=10332, Unknown=0, NotChecked=0, Total=12432 [2024-11-13 15:03:58,861 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 322 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 1266 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 1405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 1266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:03:58,861 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [322 Valid, 458 Invalid, 1405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 1266 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-13 15:03:58,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2024-11-13 15:03:59,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 161. [2024-11-13 15:03:59,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 160 states have (on average 1.375) internal successors, (220), 160 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:03:59,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 220 transitions. [2024-11-13 15:03:59,241 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 220 transitions. Word has length 36 [2024-11-13 15:03:59,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:03:59,242 INFO L471 AbstractCegarLoop]: Abstraction has 161 states and 220 transitions. [2024-11-13 15:03:59,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 1.1111111111111112) internal successors, (70), 63 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:03:59,242 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 220 transitions. [2024-11-13 15:03:59,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-13 15:03:59,242 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:03:59,242 INFO L215 NwaCegarLoop]: trace histogram [15, 14, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:03:59,263 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-11-13 15:03:59,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-13 15:03:59,444 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:03:59,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:03:59,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1478371243, now seen corresponding path program 35 times [2024-11-13 15:03:59,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:03:59,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137282567] [2024-11-13 15:03:59,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:03:59,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:03:59,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:04:00,048 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 15 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:04:00,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:04:00,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137282567] [2024-11-13 15:04:00,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137282567] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:04:00,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782748244] [2024-11-13 15:04:00,048 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 15:04:00,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:04:00,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:04:00,050 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:04:00,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-13 15:04:00,418 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2024-11-13 15:04:00,418 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:04:00,420 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-11-13 15:04:00,421 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:04:00,528 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:04:00,528 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:04:02,029 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:04:02,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782748244] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:04:02,029 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:04:02,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 33, 33] total 64 [2024-11-13 15:04:02,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759714797] [2024-11-13 15:04:02,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:04:02,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-11-13 15:04:02,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:04:02,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-11-13 15:04:02,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=577, Invalid=3455, Unknown=0, NotChecked=0, Total=4032 [2024-11-13 15:04:02,031 INFO L87 Difference]: Start difference. First operand 161 states and 220 transitions. Second operand has 64 states, 64 states have (on average 1.125) internal successors, (72), 64 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:04:27,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:04:27,475 INFO L93 Difference]: Finished difference Result 288 states and 383 transitions. [2024-11-13 15:04:27,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 180 states. [2024-11-13 15:04:27,475 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 1.125) internal successors, (72), 64 states have internal predecessors, (72), 0 states have call successors, (0), 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 [2024-11-13 15:04:27,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:04:27,482 INFO L225 Difference]: With dead ends: 288 [2024-11-13 15:04:27,482 INFO L226 Difference]: Without dead ends: 267 [2024-11-13 15:04:27,485 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8965 ImplicationChecksByTransitivity, 25.7s TimeCoverageRelationStatistics Valid=5638, Invalid=32192, Unknown=0, NotChecked=0, Total=37830 [2024-11-13 15:04:27,489 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 105 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 952 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 1058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 15:04:27,490 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 244 Invalid, 1058 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 952 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 15:04:27,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2024-11-13 15:04:27,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 170. [2024-11-13 15:04:27,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 169 states have (on average 1.349112426035503) internal successors, (228), 169 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:04:27,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 228 transitions. [2024-11-13 15:04:27,972 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 228 transitions. Word has length 37 [2024-11-13 15:04:27,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:04:27,972 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 228 transitions. [2024-11-13 15:04:27,972 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 1.125) internal successors, (72), 64 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:04:27,972 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 228 transitions. [2024-11-13 15:04:27,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-13 15:04:27,973 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:04:27,973 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:04:27,994 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2024-11-13 15:04:28,173 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-13 15:04:28,174 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:04:28,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:04:28,174 INFO L85 PathProgramCache]: Analyzing trace with hash -656827151, now seen corresponding path program 36 times [2024-11-13 15:04:28,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:04:28,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449446946] [2024-11-13 15:04:28,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:04:28,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:04:28,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:04:29,930 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:04:29,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:04:29,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449446946] [2024-11-13 15:04:29,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449446946] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:04:29,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574499797] [2024-11-13 15:04:29,930 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 15:04:29,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:04:29,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:04:29,932 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:04:29,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-11-13 15:04:30,111 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-11-13 15:04:30,111 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:04:30,113 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 65 conjuncts are in the unsatisfiable core [2024-11-13 15:04:30,114 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:04:30,729 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:04:30,729 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:04:33,957 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:04:33,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574499797] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:04:33,957 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:04:33,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 19, 19] total 66 [2024-11-13 15:04:33,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003207641] [2024-11-13 15:04:33,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:04:33,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2024-11-13 15:04:33,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:04:33,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2024-11-13 15:04:33,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=4070, Unknown=0, NotChecked=0, Total=4290 [2024-11-13 15:04:33,959 INFO L87 Difference]: Start difference. First operand 170 states and 228 transitions. Second operand has 66 states, 66 states have (on average 1.6363636363636365) internal successors, (108), 66 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:04:37,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:04:37,141 INFO L93 Difference]: Finished difference Result 190 states and 248 transitions. [2024-11-13 15:04:37,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-13 15:04:37,142 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 1.6363636363636365) internal successors, (108), 66 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-11-13 15:04:37,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:04:37,143 INFO L225 Difference]: With dead ends: 190 [2024-11-13 15:04:37,143 INFO L226 Difference]: Without dead ends: 186 [2024-11-13 15:04:37,143 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1141 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=220, Invalid=4070, Unknown=0, NotChecked=0, Total=4290 [2024-11-13 15:04:37,144 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 1144 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 1144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-13 15:04:37,144 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 171 Invalid, 1144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1144 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-13 15:04:37,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2024-11-13 15:04:37,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 169. [2024-11-13 15:04:37,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 168 states have (on average 1.3511904761904763) internal successors, (227), 168 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:04:37,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 227 transitions. [2024-11-13 15:04:37,472 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 227 transitions. Word has length 38 [2024-11-13 15:04:37,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:04:37,472 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 227 transitions. [2024-11-13 15:04:37,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 1.6363636363636365) internal successors, (108), 66 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:04:37,472 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 227 transitions. [2024-11-13 15:04:37,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-13 15:04:37,473 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:04:37,473 INFO L215 NwaCegarLoop]: trace histogram [16, 15, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:04:37,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2024-11-13 15:04:37,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-13 15:04:37,673 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:04:37,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:04:37,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1114860181, now seen corresponding path program 37 times [2024-11-13 15:04:37,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:04:37,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648356563] [2024-11-13 15:04:37,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:04:37,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:04:37,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:04:38,312 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 16 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:04:38,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:04:38,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648356563] [2024-11-13 15:04:38,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648356563] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:04:38,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106929877] [2024-11-13 15:04:38,313 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 15:04:38,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:04:38,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:04:38,314 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:04:38,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-11-13 15:04:38,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:04:38,378 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-11-13 15:04:38,379 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:04:38,493 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:04:38,493 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:04:40,390 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:04:40,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106929877] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:04:40,391 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:04:40,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 35, 35] total 68 [2024-11-13 15:04:40,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126838465] [2024-11-13 15:04:40,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:04:40,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-11-13 15:04:40,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:04:40,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-11-13 15:04:40,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=647, Invalid=3909, Unknown=0, NotChecked=0, Total=4556 [2024-11-13 15:04:40,392 INFO L87 Difference]: Start difference. First operand 169 states and 227 transitions. Second operand has 68 states, 68 states have (on average 1.1176470588235294) internal successors, (76), 68 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) [2024-11-13 15:05:11,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:05:11,619 INFO L93 Difference]: Finished difference Result 309 states and 412 transitions. [2024-11-13 15:05:11,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2024-11-13 15:05:11,619 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 1.1176470588235294) internal successors, (76), 68 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 [2024-11-13 15:05:11,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:05:11,620 INFO L225 Difference]: With dead ends: 309 [2024-11-13 15:05:11,620 INFO L226 Difference]: Without dead ends: 287 [2024-11-13 15:05:11,623 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11390 ImplicationChecksByTransitivity, 31.7s TimeCoverageRelationStatistics Valid=6930, Invalid=39510, Unknown=0, NotChecked=0, Total=46440 [2024-11-13 15:05:11,623 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 120 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 1115 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 1236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 1115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 15:05:11,623 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 261 Invalid, 1236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 1115 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-13 15:05:11,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2024-11-13 15:05:11,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 188. [2024-11-13 15:05:11,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 1.3529411764705883) internal successors, (253), 187 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) [2024-11-13 15:05:11,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 253 transitions. [2024-11-13 15:05:11,994 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 253 transitions. Word has length 39 [2024-11-13 15:05:11,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:05:11,994 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 253 transitions. [2024-11-13 15:05:11,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 1.1176470588235294) internal successors, (76), 68 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) [2024-11-13 15:05:11,994 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 253 transitions. [2024-11-13 15:05:11,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-13 15:05:11,994 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:05:11,994 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:05:12,008 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2024-11-13 15:05:12,195 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:05:12,195 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:05:12,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:05:12,195 INFO L85 PathProgramCache]: Analyzing trace with hash 344750129, now seen corresponding path program 38 times [2024-11-13 15:05:12,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:05:12,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308232314] [2024-11-13 15:05:12,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:05:12,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:05:12,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:05:13,923 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:05:13,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:05:13,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308232314] [2024-11-13 15:05:13,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308232314] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:05:13,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585910937] [2024-11-13 15:05:13,923 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:05:13,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:05:13,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:05:13,925 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:05:13,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-11-13 15:05:13,989 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 15:05:13,990 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:05:13,991 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 69 conjuncts are in the unsatisfiable core [2024-11-13 15:05:13,992 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:05:14,657 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:05:14,657 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:05:17,461 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:05:17,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1585910937] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:05:17,461 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:05:17,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 20, 20] total 70 [2024-11-13 15:05:17,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905364368] [2024-11-13 15:05:17,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:05:17,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2024-11-13 15:05:17,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:05:17,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2024-11-13 15:05:17,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=4596, Unknown=0, NotChecked=0, Total=4830 [2024-11-13 15:05:17,463 INFO L87 Difference]: Start difference. First operand 188 states and 253 transitions. Second operand has 70 states, 70 states have (on average 1.6285714285714286) internal successors, (114), 70 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:05:20,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:05:20,738 INFO L93 Difference]: Finished difference Result 209 states and 274 transitions. [2024-11-13 15:05:20,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-13 15:05:20,738 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 1.6285714285714286) internal successors, (114), 70 states have internal predecessors, (114), 0 states have call successors, (0), 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 40 [2024-11-13 15:05:20,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:05:20,740 INFO L225 Difference]: With dead ends: 209 [2024-11-13 15:05:20,740 INFO L226 Difference]: Without dead ends: 205 [2024-11-13 15:05:20,740 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1289 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=234, Invalid=4596, Unknown=0, NotChecked=0, Total=4830 [2024-11-13 15:05:20,741 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 1492 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 1492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-13 15:05:20,741 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 211 Invalid, 1492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1492 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-13 15:05:20,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2024-11-13 15:05:21,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 187. [2024-11-13 15:05:21,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 186 states have (on average 1.3548387096774193) internal successors, (252), 186 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:05:21,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 252 transitions. [2024-11-13 15:05:21,324 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 252 transitions. Word has length 40 [2024-11-13 15:05:21,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:05:21,324 INFO L471 AbstractCegarLoop]: Abstraction has 187 states and 252 transitions. [2024-11-13 15:05:21,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 1.6285714285714286) internal successors, (114), 70 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:05:21,325 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 252 transitions. [2024-11-13 15:05:21,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-13 15:05:21,325 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:05:21,326 INFO L215 NwaCegarLoop]: trace histogram [24, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:05:21,343 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2024-11-13 15:05:21,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:05:21,526 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:05:21,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:05:21,526 INFO L85 PathProgramCache]: Analyzing trace with hash -646195151, now seen corresponding path program 39 times [2024-11-13 15:05:21,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:05:21,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762997410] [2024-11-13 15:05:21,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:05:21,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:05:21,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:05:22,303 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 0 proven. 336 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:05:22,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:05:22,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762997410] [2024-11-13 15:05:22,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762997410] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:05:22,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645872405] [2024-11-13 15:05:22,304 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 15:05:22,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:05:22,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:05:22,306 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:05:22,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac2b76b-cb9e-42c1-9304-0120fd3f534b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process