./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem03_label57.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_701f3f42-ebbc-412e-aaed-aa13af6a9341/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f3f42-ebbc-412e-aaed-aa13af6a9341/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_701f3f42-ebbc-412e-aaed-aa13af6a9341/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f3f42-ebbc-412e-aaed-aa13af6a9341/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem03_label57.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f3f42-ebbc-412e-aaed-aa13af6a9341/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_701f3f42-ebbc-412e-aaed-aa13af6a9341/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 0de0fd0b8cb0cee609d45117c8166ea2b32bbf1ee23893cc14af47ce8649a66b --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 15:59:25,437 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 15:59:25,521 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f3f42-ebbc-412e-aaed-aa13af6a9341/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 15:59:25,529 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 15:59:25,530 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 15:59:25,577 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 15:59:25,578 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 15:59:25,578 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 15:59:25,579 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 15:59:25,580 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 15:59:25,581 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 15:59:25,581 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 15:59:25,582 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 15:59:25,582 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 15:59:25,582 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 15:59:25,583 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 15:59:25,583 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 15:59:25,583 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 15:59:25,583 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 15:59:25,583 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 15:59:25,583 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 15:59:25,584 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 15:59:25,584 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 15:59:25,584 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 15:59:25,584 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 15:59:25,584 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 15:59:25,584 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 15:59:25,585 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 15:59:25,585 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 15:59:25,585 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 15:59:25,585 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 15:59:25,585 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 15:59:25,585 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:59:25,585 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 15:59:25,585 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 15:59:25,585 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 15:59:25,585 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 15:59:25,586 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 15:59:25,586 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 15:59:25,586 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 15:59:25,586 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 15:59:25,586 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 15:59:25,586 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_701f3f42-ebbc-412e-aaed-aa13af6a9341/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 -> 0de0fd0b8cb0cee609d45117c8166ea2b32bbf1ee23893cc14af47ce8649a66b [2024-11-13 15:59:25,941 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 15:59:25,951 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 15:59:25,953 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 15:59:25,955 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 15:59:25,955 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 15:59:25,956 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f3f42-ebbc-412e-aaed-aa13af6a9341/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/eca-rers2012/Problem03_label57.c Unable to find full path for "g++" [2024-11-13 15:59:27,999 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 15:59:28,453 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 15:59:28,454 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f3f42-ebbc-412e-aaed-aa13af6a9341/sv-benchmarks/c/eca-rers2012/Problem03_label57.c [2024-11-13 15:59:28,470 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f3f42-ebbc-412e-aaed-aa13af6a9341/bin/uautomizer-verify-qhAvR1uOyd/data/ee12d084b/d2944ffd317949edb8b87406a7ce79b3/FLAG7df7a696c [2024-11-13 15:59:28,486 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f3f42-ebbc-412e-aaed-aa13af6a9341/bin/uautomizer-verify-qhAvR1uOyd/data/ee12d084b/d2944ffd317949edb8b87406a7ce79b3 [2024-11-13 15:59:28,489 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 15:59:28,490 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 15:59:28,492 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 15:59:28,492 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 15:59:28,497 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 15:59:28,497 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:59:28" (1/1) ... [2024-11-13 15:59:28,498 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5314d2e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:59:28, skipping insertion in model container [2024-11-13 15:59:28,499 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:59:28" (1/1) ... [2024-11-13 15:59:28,557 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 15:59:29,049 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_701f3f42-ebbc-412e-aaed-aa13af6a9341/sv-benchmarks/c/eca-rers2012/Problem03_label57.c[55951,55964] [2024-11-13 15:59:29,100 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:59:29,112 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 15:59:29,357 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_701f3f42-ebbc-412e-aaed-aa13af6a9341/sv-benchmarks/c/eca-rers2012/Problem03_label57.c[55951,55964] [2024-11-13 15:59:29,379 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:59:29,406 INFO L204 MainTranslator]: Completed translation [2024-11-13 15:59:29,407 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:59:29 WrapperNode [2024-11-13 15:59:29,407 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 15:59:29,408 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 15:59:29,409 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 15:59:29,410 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 15:59:29,420 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:59:29" (1/1) ... [2024-11-13 15:59:29,467 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:59:29" (1/1) ... [2024-11-13 15:59:29,589 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1771 [2024-11-13 15:59:29,589 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 15:59:29,591 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 15:59:29,591 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 15:59:29,591 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 15:59:29,602 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:59:29" (1/1) ... [2024-11-13 15:59:29,602 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:59:29" (1/1) ... [2024-11-13 15:59:29,613 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:59:29" (1/1) ... [2024-11-13 15:59:29,669 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 15:59:29,673 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:59:29" (1/1) ... [2024-11-13 15:59:29,674 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:59:29" (1/1) ... [2024-11-13 15:59:29,748 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:59:29" (1/1) ... [2024-11-13 15:59:29,768 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:59:29" (1/1) ... [2024-11-13 15:59:29,793 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:59:29" (1/1) ... [2024-11-13 15:59:29,800 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:59:29" (1/1) ... [2024-11-13 15:59:29,818 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 15:59:29,820 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 15:59:29,821 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 15:59:29,821 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 15:59:29,822 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:59:29" (1/1) ... [2024-11-13 15:59:29,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:59:29,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f3f42-ebbc-412e-aaed-aa13af6a9341/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:59:29,864 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f3f42-ebbc-412e-aaed-aa13af6a9341/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 15:59:29,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f3f42-ebbc-412e-aaed-aa13af6a9341/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 15:59:29,899 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 15:59:29,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 15:59:29,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 15:59:29,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 15:59:30,021 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 15:59:30,023 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 15:59:32,630 INFO L? ?]: Removed 147 outVars from TransFormulas that were not future-live. [2024-11-13 15:59:32,630 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 15:59:32,662 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 15:59:32,662 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-13 15:59:32,662 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:59:32 BoogieIcfgContainer [2024-11-13 15:59:32,662 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 15:59:32,665 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 15:59:32,665 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 15:59:32,673 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 15:59:32,673 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 03:59:28" (1/3) ... [2024-11-13 15:59:32,674 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8fdb44b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:59:32, skipping insertion in model container [2024-11-13 15:59:32,674 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:59:29" (2/3) ... [2024-11-13 15:59:32,674 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8fdb44b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:59:32, skipping insertion in model container [2024-11-13 15:59:32,675 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:59:32" (3/3) ... [2024-11-13 15:59:32,677 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label57.c [2024-11-13 15:59:32,695 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 15:59:32,698 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem03_label57.c that has 1 procedures, 302 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-13 15:59:32,787 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 15:59:32,805 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;@7bf07e22, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 15:59:32,806 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 15:59:32,814 INFO L276 IsEmpty]: Start isEmpty. Operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 0 states have call successors, (0), 0 states 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 15:59:32,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-13 15:59:32,829 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:59:32,830 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:59:32,831 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:59:32,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:59:32,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1571947430, now seen corresponding path program 1 times [2024-11-13 15:59:32,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:59:32,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514723144] [2024-11-13 15:59:32,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:59:32,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:59:33,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:59:34,283 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 15:59:34,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:59:34,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514723144] [2024-11-13 15:59:34,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514723144] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:59:34,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:59:34,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:59:34,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439497574] [2024-11-13 15:59:34,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:59:34,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:59:34,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:59:34,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:59:34,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:59:34,331 INFO L87 Difference]: Start difference. First operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 0 states have call successors, (0), 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 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:35,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:59:35,862 INFO L93 Difference]: Finished difference Result 860 states and 1507 transitions. [2024-11-13 15:59:35,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:59:35,868 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2024-11-13 15:59:35,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:59:35,880 INFO L225 Difference]: With dead ends: 860 [2024-11-13 15:59:35,881 INFO L226 Difference]: Without dead ends: 465 [2024-11-13 15:59:35,885 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:59:35,888 INFO L432 NwaCegarLoop]: 135 mSDtfsCounter, 143 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-13 15:59:35,888 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 170 Invalid, 833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-13 15:59:35,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2024-11-13 15:59:35,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 459. [2024-11-13 15:59:35,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 458 states have (on average 1.556768558951965) internal successors, (713), 458 states have internal predecessors, (713), 0 states have call successors, (0), 0 states 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 15:59:35,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 713 transitions. [2024-11-13 15:59:35,954 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 713 transitions. Word has length 161 [2024-11-13 15:59:35,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:59:35,955 INFO L471 AbstractCegarLoop]: Abstraction has 459 states and 713 transitions. [2024-11-13 15:59:35,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:35,956 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 713 transitions. [2024-11-13 15:59:35,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-13 15:59:35,959 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:59:35,960 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:59:35,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 15:59:35,960 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:59:35,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:59:35,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1251379429, now seen corresponding path program 1 times [2024-11-13 15:59:35,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:59:35,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436661339] [2024-11-13 15:59:35,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:59:35,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:59:36,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:59:36,297 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:36,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:59:36,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436661339] [2024-11-13 15:59:36,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436661339] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:59:36,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:59:36,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:59:36,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404088315] [2024-11-13 15:59:36,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:59:36,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:59:36,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:59:36,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:59:36,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:59:36,302 INFO L87 Difference]: Start difference. First operand 459 states and 713 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 2 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:37,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:59:37,415 INFO L93 Difference]: Finished difference Result 1343 states and 2102 transitions. [2024-11-13 15:59:37,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:59:37,416 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 2 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 169 [2024-11-13 15:59:37,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:59:37,420 INFO L225 Difference]: With dead ends: 1343 [2024-11-13 15:59:37,420 INFO L226 Difference]: Without dead ends: 886 [2024-11-13 15:59:37,422 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:59:37,423 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 247 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:59:37,423 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 91 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-13 15:59:37,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2024-11-13 15:59:37,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 868. [2024-11-13 15:59:37,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 868 states, 867 states have (on average 1.532871972318339) internal successors, (1329), 867 states have internal predecessors, (1329), 0 states have call successors, (0), 0 states 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 15:59:37,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 868 states to 868 states and 1329 transitions. [2024-11-13 15:59:37,463 INFO L78 Accepts]: Start accepts. Automaton has 868 states and 1329 transitions. Word has length 169 [2024-11-13 15:59:37,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:59:37,463 INFO L471 AbstractCegarLoop]: Abstraction has 868 states and 1329 transitions. [2024-11-13 15:59:37,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 2 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:37,463 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states and 1329 transitions. [2024-11-13 15:59:37,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-13 15:59:37,468 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:59:37,468 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:59:37,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 15:59:37,469 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:59:37,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:59:37,469 INFO L85 PathProgramCache]: Analyzing trace with hash 340923135, now seen corresponding path program 1 times [2024-11-13 15:59:37,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:59:37,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283548693] [2024-11-13 15:59:37,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:59:37,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:59:37,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:59:37,860 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:37,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:59:37,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283548693] [2024-11-13 15:59:37,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283548693] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:59:37,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:59:37,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:59:37,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388607671] [2024-11-13 15:59:37,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:59:37,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:59:37,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:59:37,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:59:37,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:59:37,863 INFO L87 Difference]: Start difference. First operand 868 states and 1329 transitions. Second operand has 3 states, 3 states have (on average 58.0) internal successors, (174), 2 states have internal predecessors, (174), 0 states have call successors, (0), 0 states 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 15:59:38,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:59:38,946 INFO L93 Difference]: Finished difference Result 2570 states and 3939 transitions. [2024-11-13 15:59:38,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:59:38,947 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 2 states have internal predecessors, (174), 0 states have call successors, (0), 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 174 [2024-11-13 15:59:38,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:59:38,955 INFO L225 Difference]: With dead ends: 2570 [2024-11-13 15:59:38,955 INFO L226 Difference]: Without dead ends: 1704 [2024-11-13 15:59:38,957 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:59:38,959 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 243 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:59:38,961 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 150 Invalid, 706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 602 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-13 15:59:38,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1704 states. [2024-11-13 15:59:39,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1704 to 1700. [2024-11-13 15:59:39,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1700 states, 1699 states have (on average 1.4484991171277222) internal successors, (2461), 1699 states have internal predecessors, (2461), 0 states have call successors, (0), 0 states 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 15:59:39,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1700 states to 1700 states and 2461 transitions. [2024-11-13 15:59:39,018 INFO L78 Accepts]: Start accepts. Automaton has 1700 states and 2461 transitions. Word has length 174 [2024-11-13 15:59:39,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:59:39,018 INFO L471 AbstractCegarLoop]: Abstraction has 1700 states and 2461 transitions. [2024-11-13 15:59:39,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 2 states have internal predecessors, (174), 0 states have call successors, (0), 0 states 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 15:59:39,019 INFO L276 IsEmpty]: Start isEmpty. Operand 1700 states and 2461 transitions. [2024-11-13 15:59:39,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-13 15:59:39,025 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:59:39,026 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:59:39,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 15:59:39,026 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:59:39,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:59:39,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1419673078, now seen corresponding path program 1 times [2024-11-13 15:59:39,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:59:39,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78899495] [2024-11-13 15:59:39,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:59:39,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:59:39,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:59:39,696 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-13 15:59:39,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:59:39,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78899495] [2024-11-13 15:59:39,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78899495] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:59:39,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:59:39,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:59:39,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765624424] [2024-11-13 15:59:39,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:59:39,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:59:39,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:59:39,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:59:39,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:59:39,703 INFO L87 Difference]: Start difference. First operand 1700 states and 2461 transitions. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 2 states have internal predecessors, (172), 0 states have call successors, (0), 0 states 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 15:59:41,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:59:41,149 INFO L93 Difference]: Finished difference Result 4226 states and 6097 transitions. [2024-11-13 15:59:41,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:59:41,150 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 2 states have internal predecessors, (172), 0 states have call successors, (0), 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 178 [2024-11-13 15:59:41,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:59:41,162 INFO L225 Difference]: With dead ends: 4226 [2024-11-13 15:59:41,162 INFO L226 Difference]: Without dead ends: 2528 [2024-11-13 15:59:41,165 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:59:41,166 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 234 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-13 15:59:41,167 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 115 Invalid, 744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-13 15:59:41,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2528 states. [2024-11-13 15:59:41,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2528 to 2527. [2024-11-13 15:59:41,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2527 states, 2526 states have (on average 1.4180522565320666) internal successors, (3582), 2526 states have internal predecessors, (3582), 0 states have call successors, (0), 0 states 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 15:59:41,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2527 states to 2527 states and 3582 transitions. [2024-11-13 15:59:41,250 INFO L78 Accepts]: Start accepts. Automaton has 2527 states and 3582 transitions. Word has length 178 [2024-11-13 15:59:41,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:59:41,251 INFO L471 AbstractCegarLoop]: Abstraction has 2527 states and 3582 transitions. [2024-11-13 15:59:41,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 2 states have internal predecessors, (172), 0 states have call successors, (0), 0 states 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 15:59:41,252 INFO L276 IsEmpty]: Start isEmpty. Operand 2527 states and 3582 transitions. [2024-11-13 15:59:41,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-11-13 15:59:41,261 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:59:41,261 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:59:41,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 15:59:41,262 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:59:41,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:59:41,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1511659668, now seen corresponding path program 1 times [2024-11-13 15:59:41,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:59:41,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931737635] [2024-11-13 15:59:41,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:59:41,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:59:41,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:59:41,697 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 15:59:41,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:59:41,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931737635] [2024-11-13 15:59:41,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931737635] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:59:41,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:59:41,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:59:41,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481223678] [2024-11-13 15:59:41,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:59:41,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:59:41,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:59:41,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:59:41,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:59:41,699 INFO L87 Difference]: Start difference. First operand 2527 states and 3582 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:43,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:59:43,190 INFO L93 Difference]: Finished difference Result 7492 states and 10627 transitions. [2024-11-13 15:59:43,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:59:43,191 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2024-11-13 15:59:43,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:59:43,210 INFO L225 Difference]: With dead ends: 7492 [2024-11-13 15:59:43,211 INFO L226 Difference]: Without dead ends: 4967 [2024-11-13 15:59:43,214 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:59:43,215 INFO L432 NwaCegarLoop]: 393 mSDtfsCounter, 227 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-13 15:59:43,216 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 422 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-13 15:59:43,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4967 states. [2024-11-13 15:59:43,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4967 to 4965. [2024-11-13 15:59:43,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4965 states, 4964 states have (on average 1.266921837228042) internal successors, (6289), 4964 states have internal predecessors, (6289), 0 states have call successors, (0), 0 states 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 15:59:43,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4965 states to 4965 states and 6289 transitions. [2024-11-13 15:59:43,366 INFO L78 Accepts]: Start accepts. Automaton has 4965 states and 6289 transitions. Word has length 181 [2024-11-13 15:59:43,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:59:43,366 INFO L471 AbstractCegarLoop]: Abstraction has 4965 states and 6289 transitions. [2024-11-13 15:59:43,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:43,367 INFO L276 IsEmpty]: Start isEmpty. Operand 4965 states and 6289 transitions. [2024-11-13 15:59:43,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-11-13 15:59:43,378 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:59:43,378 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:59:43,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 15:59:43,378 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:59:43,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:59:43,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1683365500, now seen corresponding path program 1 times [2024-11-13 15:59:43,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:59:43,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866599631] [2024-11-13 15:59:43,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:59:43,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:59:43,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:59:43,897 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-13 15:59:43,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:59:43,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866599631] [2024-11-13 15:59:43,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866599631] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:59:43,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:59:43,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:59:43,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529238554] [2024-11-13 15:59:43,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:59:43,899 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:59:43,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:59:43,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:59:43,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:59:43,900 INFO L87 Difference]: Start difference. First operand 4965 states and 6289 transitions. Second operand has 4 states, 4 states have (on average 47.25) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:45,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:59:45,886 INFO L93 Difference]: Finished difference Result 18953 states and 24126 transitions. [2024-11-13 15:59:45,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:59:45,887 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.25) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 195 [2024-11-13 15:59:45,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:59:45,947 INFO L225 Difference]: With dead ends: 18953 [2024-11-13 15:59:45,947 INFO L226 Difference]: Without dead ends: 13990 [2024-11-13 15:59:45,955 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:59:45,958 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 779 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 887 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 1033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-13 15:59:45,958 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [779 Valid, 285 Invalid, 1033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 887 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-13 15:59:45,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13990 states. [2024-11-13 15:59:46,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13990 to 13171. [2024-11-13 15:59:46,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13171 states, 13170 states have (on average 1.267577828397874) internal successors, (16694), 13170 states have internal predecessors, (16694), 0 states have call successors, (0), 0 states 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 15:59:46,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13171 states to 13171 states and 16694 transitions. [2024-11-13 15:59:46,314 INFO L78 Accepts]: Start accepts. Automaton has 13171 states and 16694 transitions. Word has length 195 [2024-11-13 15:59:46,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:59:46,318 INFO L471 AbstractCegarLoop]: Abstraction has 13171 states and 16694 transitions. [2024-11-13 15:59:46,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.25) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:46,318 INFO L276 IsEmpty]: Start isEmpty. Operand 13171 states and 16694 transitions. [2024-11-13 15:59:46,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-11-13 15:59:46,340 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:59:46,340 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:59:46,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 15:59:46,341 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:59:46,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:59:46,341 INFO L85 PathProgramCache]: Analyzing trace with hash -836591743, now seen corresponding path program 1 times [2024-11-13 15:59:46,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:59:46,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283287774] [2024-11-13 15:59:46,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:59:46,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:59:46,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:59:46,625 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-13 15:59:46,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:59:46,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283287774] [2024-11-13 15:59:46,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283287774] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:59:46,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:59:46,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:59:46,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872834708] [2024-11-13 15:59:46,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:59:46,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:59:46,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:59:46,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:59:46,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:59:46,630 INFO L87 Difference]: Start difference. First operand 13171 states and 16694 transitions. Second operand has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 2 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 15:59:48,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:59:48,095 INFO L93 Difference]: Finished difference Result 38785 states and 49253 transitions. [2024-11-13 15:59:48,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:59:48,095 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 2 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) Word has length 197 [2024-11-13 15:59:48,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:59:48,171 INFO L225 Difference]: With dead ends: 38785 [2024-11-13 15:59:48,171 INFO L226 Difference]: Without dead ends: 25616 [2024-11-13 15:59:48,190 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:59:48,191 INFO L432 NwaCegarLoop]: 146 mSDtfsCounter, 241 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 643 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-13 15:59:48,191 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 179 Invalid, 718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 643 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-13 15:59:48,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25616 states. [2024-11-13 15:59:48,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25616 to 25205. [2024-11-13 15:59:48,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25205 states, 25204 states have (on average 1.236192667830503) internal successors, (31157), 25204 states have internal predecessors, (31157), 0 states have call successors, (0), 0 states 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 15:59:49,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25205 states to 25205 states and 31157 transitions. [2024-11-13 15:59:49,068 INFO L78 Accepts]: Start accepts. Automaton has 25205 states and 31157 transitions. Word has length 197 [2024-11-13 15:59:49,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:59:49,070 INFO L471 AbstractCegarLoop]: Abstraction has 25205 states and 31157 transitions. [2024-11-13 15:59:49,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 2 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 15:59:49,070 INFO L276 IsEmpty]: Start isEmpty. Operand 25205 states and 31157 transitions. [2024-11-13 15:59:49,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2024-11-13 15:59:49,114 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:59:49,114 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:59:49,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 15:59:49,115 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:59:49,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:59:49,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1971032470, now seen corresponding path program 1 times [2024-11-13 15:59:49,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:59:49,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866629024] [2024-11-13 15:59:49,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:59:49,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:59:49,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:59:49,892 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 47 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:49,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:59:49,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866629024] [2024-11-13 15:59:49,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866629024] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:59:49,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839251447] [2024-11-13 15:59:49,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:59:49,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:59:49,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f3f42-ebbc-412e-aaed-aa13af6a9341/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:59:49,897 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f3f42-ebbc-412e-aaed-aa13af6a9341/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:59:49,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f3f42-ebbc-412e-aaed-aa13af6a9341/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 15:59:50,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:59:50,179 INFO L255 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 15:59:50,196 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:59:50,570 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 15:59:50,570 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:59:50,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839251447] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:59:50,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 15:59:50,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-13 15:59:50,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989252390] [2024-11-13 15:59:50,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:59:50,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:59:50,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:59:50,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:59:50,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:59:50,574 INFO L87 Difference]: Start difference. First operand 25205 states and 31157 transitions. Second operand has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states 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 15:59:52,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:59:52,104 INFO L93 Difference]: Finished difference Result 72026 states and 89473 transitions. [2024-11-13 15:59:52,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:59:52,105 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 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 209 [2024-11-13 15:59:52,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:59:52,229 INFO L225 Difference]: With dead ends: 72026 [2024-11-13 15:59:52,230 INFO L226 Difference]: Without dead ends: 46823 [2024-11-13 15:59:52,264 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:59:52,265 INFO L432 NwaCegarLoop]: 138 mSDtfsCounter, 84 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-13 15:59:52,265 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 172 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 645 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-13 15:59:52,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46823 states. [2024-11-13 15:59:53,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46823 to 40258. [2024-11-13 15:59:53,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40258 states, 40257 states have (on average 1.2616439377002757) internal successors, (50790), 40257 states have internal predecessors, (50790), 0 states have call successors, (0), 0 states 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 15:59:53,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40258 states to 40258 states and 50790 transitions. [2024-11-13 15:59:53,490 INFO L78 Accepts]: Start accepts. Automaton has 40258 states and 50790 transitions. Word has length 209 [2024-11-13 15:59:53,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:59:53,491 INFO L471 AbstractCegarLoop]: Abstraction has 40258 states and 50790 transitions. [2024-11-13 15:59:53,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states 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 15:59:53,492 INFO L276 IsEmpty]: Start isEmpty. Operand 40258 states and 50790 transitions. [2024-11-13 15:59:53,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2024-11-13 15:59:53,576 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:59:53,577 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:59:53,603 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f3f42-ebbc-412e-aaed-aa13af6a9341/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 15:59:53,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f3f42-ebbc-412e-aaed-aa13af6a9341/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-13 15:59:53,782 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:59:53,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:59:53,783 INFO L85 PathProgramCache]: Analyzing trace with hash 2083135766, now seen corresponding path program 1 times [2024-11-13 15:59:53,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:59:53,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412165362] [2024-11-13 15:59:53,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:59:53,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:59:53,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:59:54,682 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 74 proven. 6 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-13 15:59:54,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:59:54,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412165362] [2024-11-13 15:59:54,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412165362] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:59:54,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005381080] [2024-11-13 15:59:54,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:59:54,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:59:54,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f3f42-ebbc-412e-aaed-aa13af6a9341/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:59:54,690 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f3f42-ebbc-412e-aaed-aa13af6a9341/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:59:54,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f3f42-ebbc-412e-aaed-aa13af6a9341/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 15:59:54,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:59:54,964 INFO L255 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 15:59:54,973 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:59:55,024 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-13 15:59:55,024 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:59:55,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005381080] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:59:55,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 15:59:55,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-13 15:59:55,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389339463] [2024-11-13 15:59:55,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:59:55,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:59:55,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:59:55,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:59:55,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:59:55,030 INFO L87 Difference]: Start difference. First operand 40258 states and 50790 transitions. Second operand has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states 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 15:59:56,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:59:56,915 INFO L93 Difference]: Finished difference Result 102646 states and 131207 transitions. [2024-11-13 15:59:56,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:59:56,916 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 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 226 [2024-11-13 15:59:56,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:59:57,059 INFO L225 Difference]: With dead ends: 102646 [2024-11-13 15:59:57,059 INFO L226 Difference]: Without dead ends: 62390 [2024-11-13 15:59:57,098 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:59:57,098 INFO L432 NwaCegarLoop]: 398 mSDtfsCounter, 233 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 674 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-13 15:59:57,100 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 419 Invalid, 756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 674 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-13 15:59:57,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62390 states. [2024-11-13 15:59:58,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62390 to 58932. [2024-11-13 15:59:58,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58932 states, 58931 states have (on average 1.270282194430775) internal successors, (74859), 58931 states have internal predecessors, (74859), 0 states have call successors, (0), 0 states 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 15:59:58,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58932 states to 58932 states and 74859 transitions. [2024-11-13 15:59:58,470 INFO L78 Accepts]: Start accepts. Automaton has 58932 states and 74859 transitions. Word has length 226 [2024-11-13 15:59:58,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:59:58,470 INFO L471 AbstractCegarLoop]: Abstraction has 58932 states and 74859 transitions. [2024-11-13 15:59:58,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states 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 15:59:58,471 INFO L276 IsEmpty]: Start isEmpty. Operand 58932 states and 74859 transitions. [2024-11-13 15:59:58,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-11-13 15:59:58,541 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:59:58,541 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:59:58,566 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f3f42-ebbc-412e-aaed-aa13af6a9341/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 15:59:58,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f3f42-ebbc-412e-aaed-aa13af6a9341/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:59:58,742 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:59:58,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:59:58,743 INFO L85 PathProgramCache]: Analyzing trace with hash 2041479273, now seen corresponding path program 1 times [2024-11-13 15:59:58,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:59:58,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960744360] [2024-11-13 15:59:58,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:59:58,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:59:58,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:59:59,485 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-13 15:59:59,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:59:59,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960744360] [2024-11-13 15:59:59,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960744360] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:59:59,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:59:59,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:59:59,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348057083] [2024-11-13 15:59:59,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:59:59,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:59:59,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:59:59,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:59:59,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:59:59,488 INFO L87 Difference]: Start difference. First operand 58932 states and 74859 transitions. Second operand has 4 states, 4 states have (on average 54.25) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:00:02,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:00:02,210 INFO L93 Difference]: Finished difference Result 220483 states and 279468 transitions. [2024-11-13 16:00:02,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 16:00:02,211 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 54.25) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 228 [2024-11-13 16:00:02,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:00:02,567 INFO L225 Difference]: With dead ends: 220483 [2024-11-13 16:00:02,567 INFO L226 Difference]: Without dead ends: 161553 [2024-11-13 16:00:02,643 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:00:02,644 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 885 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 885 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-13 16:00:02,646 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [885 Valid, 327 Invalid, 962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 744 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-13 16:00:02,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161553 states. [2024-11-13 16:00:05,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161553 to 161106. [2024-11-13 16:00:05,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161106 states, 161105 states have (on average 1.2614319853511684) internal successors, (203223), 161105 states have internal predecessors, (203223), 0 states have call successors, (0), 0 states 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 16:00:05,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161106 states to 161106 states and 203223 transitions. [2024-11-13 16:00:05,764 INFO L78 Accepts]: Start accepts. Automaton has 161106 states and 203223 transitions. Word has length 228 [2024-11-13 16:00:05,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:00:05,764 INFO L471 AbstractCegarLoop]: Abstraction has 161106 states and 203223 transitions. [2024-11-13 16:00:05,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.25) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:00:05,764 INFO L276 IsEmpty]: Start isEmpty. Operand 161106 states and 203223 transitions. [2024-11-13 16:00:05,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2024-11-13 16:00:05,823 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:00:05,823 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:00:05,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-13 16:00:05,825 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:00:05,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:00:05,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1821079360, now seen corresponding path program 1 times [2024-11-13 16:00:05,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:00:05,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989006488] [2024-11-13 16:00:05,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:00:05,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:00:06,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:00:06,507 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:00:06,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:00:06,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989006488] [2024-11-13 16:00:06,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989006488] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:00:06,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:00:06,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 16:00:06,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601974081] [2024-11-13 16:00:06,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:00:06,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:00:06,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:00:06,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:00:06,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:00:06,509 INFO L87 Difference]: Start difference. First operand 161106 states and 203223 transitions. Second operand has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:00:08,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:00:08,973 INFO L93 Difference]: Finished difference Result 328789 states and 411202 transitions. [2024-11-13 16:00:08,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:00:08,973 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 231 [2024-11-13 16:00:08,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:00:09,247 INFO L225 Difference]: With dead ends: 328789 [2024-11-13 16:00:09,247 INFO L226 Difference]: Without dead ends: 167685 [2024-11-13 16:00:09,346 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:00:09,348 INFO L432 NwaCegarLoop]: 401 mSDtfsCounter, 242 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:00:09,348 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 431 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-13 16:00:09,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167685 states. [2024-11-13 16:00:11,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167685 to 167534. [2024-11-13 16:00:11,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167534 states, 167533 states have (on average 1.2225352617096332) internal successors, (204815), 167533 states have internal predecessors, (204815), 0 states have call successors, (0), 0 states 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 16:00:12,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167534 states to 167534 states and 204815 transitions. [2024-11-13 16:00:12,548 INFO L78 Accepts]: Start accepts. Automaton has 167534 states and 204815 transitions. Word has length 231 [2024-11-13 16:00:12,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:00:12,548 INFO L471 AbstractCegarLoop]: Abstraction has 167534 states and 204815 transitions. [2024-11-13 16:00:12,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:00:12,548 INFO L276 IsEmpty]: Start isEmpty. Operand 167534 states and 204815 transitions. [2024-11-13 16:00:12,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2024-11-13 16:00:12,601 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:00:12,601 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:00:12,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-13 16:00:12,602 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:00:12,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:00:12,602 INFO L85 PathProgramCache]: Analyzing trace with hash -8287268, now seen corresponding path program 1 times [2024-11-13 16:00:12,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:00:12,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163902837] [2024-11-13 16:00:12,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:00:12,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:00:12,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:00:13,222 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 76 proven. 6 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-13 16:00:13,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:00:13,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163902837] [2024-11-13 16:00:13,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163902837] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:00:13,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159277012] [2024-11-13 16:00:13,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:00:13,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:00:13,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f3f42-ebbc-412e-aaed-aa13af6a9341/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:00:13,226 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f3f42-ebbc-412e-aaed-aa13af6a9341/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:00:13,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f3f42-ebbc-412e-aaed-aa13af6a9341/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 16:00:13,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:00:13,516 INFO L255 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 16:00:13,523 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:00:13,591 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 16:00:13,595 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:00:13,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159277012] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:00:13,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 16:00:13,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-13 16:00:13,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080704660] [2024-11-13 16:00:13,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:00:13,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:00:13,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:00:13,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:00:13,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 16:00:13,597 INFO L87 Difference]: Start difference. First operand 167534 states and 204815 transitions. Second operand has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 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 16:00:16,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:00:16,212 INFO L93 Difference]: Finished difference Result 332241 states and 406235 transitions. [2024-11-13 16:00:16,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:00:16,212 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 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) Word has length 232 [2024-11-13 16:00:16,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:00:16,508 INFO L225 Difference]: With dead ends: 332241 [2024-11-13 16:00:16,509 INFO L226 Difference]: Without dead ends: 164709 [2024-11-13 16:00:16,620 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 16:00:16,620 INFO L432 NwaCegarLoop]: 141 mSDtfsCounter, 224 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-13 16:00:16,621 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 166 Invalid, 692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-13 16:00:16,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164709 states. [2024-11-13 16:00:18,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164709 to 162053. [2024-11-13 16:00:18,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162053 states, 162052 states have (on average 1.1577086367338878) internal successors, (187609), 162052 states have internal predecessors, (187609), 0 states have call successors, (0), 0 states 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 16:00:19,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162053 states to 162053 states and 187609 transitions. [2024-11-13 16:00:19,122 INFO L78 Accepts]: Start accepts. Automaton has 162053 states and 187609 transitions. Word has length 232 [2024-11-13 16:00:19,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:00:19,122 INFO L471 AbstractCegarLoop]: Abstraction has 162053 states and 187609 transitions. [2024-11-13 16:00:19,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 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 16:00:19,123 INFO L276 IsEmpty]: Start isEmpty. Operand 162053 states and 187609 transitions. [2024-11-13 16:00:19,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2024-11-13 16:00:19,164 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:00:19,165 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:00:19,190 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f3f42-ebbc-412e-aaed-aa13af6a9341/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 16:00:19,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f3f42-ebbc-412e-aaed-aa13af6a9341/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:00:19,365 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:00:19,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:00:19,366 INFO L85 PathProgramCache]: Analyzing trace with hash 613210029, now seen corresponding path program 1 times [2024-11-13 16:00:19,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:00:19,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070206401] [2024-11-13 16:00:19,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:00:19,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:00:19,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:00:20,097 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:00:20,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:00:20,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070206401] [2024-11-13 16:00:20,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070206401] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:00:20,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:00:20,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 16:00:20,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330553634] [2024-11-13 16:00:20,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:00:20,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:00:20,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:00:20,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:00:20,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:00:20,104 INFO L87 Difference]: Start difference. First operand 162053 states and 187609 transitions. Second operand has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:00:21,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:00:21,923 INFO L93 Difference]: Finished difference Result 302949 states and 349899 transitions. [2024-11-13 16:00:21,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:00:21,923 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 280 [2024-11-13 16:00:21,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:00:22,625 INFO L225 Difference]: With dead ends: 302949 [2024-11-13 16:00:22,626 INFO L226 Difference]: Without dead ends: 141101 [2024-11-13 16:00:22,688 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:00:22,688 INFO L432 NwaCegarLoop]: 330 mSDtfsCounter, 253 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-13 16:00:22,689 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 356 Invalid, 674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-13 16:00:22,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141101 states. [2024-11-13 16:00:24,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141101 to 139260. [2024-11-13 16:00:24,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139260 states, 139259 states have (on average 1.1273598115741172) internal successors, (156995), 139259 states have internal predecessors, (156995), 0 states have call successors, (0), 0 states 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 16:00:24,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139260 states to 139260 states and 156995 transitions. [2024-11-13 16:00:24,887 INFO L78 Accepts]: Start accepts. Automaton has 139260 states and 156995 transitions. Word has length 280 [2024-11-13 16:00:24,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:00:24,887 INFO L471 AbstractCegarLoop]: Abstraction has 139260 states and 156995 transitions. [2024-11-13 16:00:24,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:00:24,887 INFO L276 IsEmpty]: Start isEmpty. Operand 139260 states and 156995 transitions. [2024-11-13 16:00:24,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2024-11-13 16:00:24,932 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:00:24,932 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:00:24,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-13 16:00:24,932 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:00:24,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:00:24,933 INFO L85 PathProgramCache]: Analyzing trace with hash -177083911, now seen corresponding path program 1 times [2024-11-13 16:00:24,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:00:24,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733200804] [2024-11-13 16:00:24,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:00:24,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:00:25,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:00:26,203 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 134 proven. 6 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2024-11-13 16:00:26,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:00:26,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733200804] [2024-11-13 16:00:26,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733200804] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:00:26,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080594465] [2024-11-13 16:00:26,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:00:26,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:00:26,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f3f42-ebbc-412e-aaed-aa13af6a9341/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:00:26,206 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f3f42-ebbc-412e-aaed-aa13af6a9341/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:00:26,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f3f42-ebbc-412e-aaed-aa13af6a9341/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 16:00:26,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:00:26,511 INFO L255 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 16:00:26,517 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:00:26,599 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 202 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2024-11-13 16:00:26,599 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:00:26,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080594465] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:00:26,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 16:00:26,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-13 16:00:26,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292221671] [2024-11-13 16:00:26,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:00:26,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:00:26,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:00:26,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:00:26,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 16:00:26,601 INFO L87 Difference]: Start difference. First operand 139260 states and 156995 transitions. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states 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 16:00:28,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:00:28,649 INFO L93 Difference]: Finished difference Result 251463 states and 282785 transitions. [2024-11-13 16:00:28,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:00:28,650 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 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 345 [2024-11-13 16:00:28,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:00:28,765 INFO L225 Difference]: With dead ends: 251463 [2024-11-13 16:00:28,765 INFO L226 Difference]: Without dead ends: 112408 [2024-11-13 16:00:28,815 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 344 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 16:00:28,815 INFO L432 NwaCegarLoop]: 368 mSDtfsCounter, 233 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 591 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-13 16:00:28,815 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 397 Invalid, 680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 591 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-13 16:00:28,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112408 states. [2024-11-13 16:00:30,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112408 to 109127. [2024-11-13 16:00:30,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109127 states, 109126 states have (on average 1.1102761944907722) internal successors, (121160), 109126 states have internal predecessors, (121160), 0 states have call successors, (0), 0 states 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 16:00:30,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109127 states to 109127 states and 121160 transitions. [2024-11-13 16:00:30,624 INFO L78 Accepts]: Start accepts. Automaton has 109127 states and 121160 transitions. Word has length 345 [2024-11-13 16:00:30,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:00:30,624 INFO L471 AbstractCegarLoop]: Abstraction has 109127 states and 121160 transitions. [2024-11-13 16:00:30,624 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states 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 16:00:30,625 INFO L276 IsEmpty]: Start isEmpty. Operand 109127 states and 121160 transitions. [2024-11-13 16:00:30,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2024-11-13 16:00:30,698 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:00:30,698 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:00:30,714 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f3f42-ebbc-412e-aaed-aa13af6a9341/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 16:00:30,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_701f3f42-ebbc-412e-aaed-aa13af6a9341/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-13 16:00:30,899 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:00:30,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:00:30,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1444160014, now seen corresponding path program 1 times [2024-11-13 16:00:30,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:00:30,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107612122] [2024-11-13 16:00:30,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:00:30,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:00:31,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:00:32,017 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 268 proven. 0 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2024-11-13 16:00:32,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:00:32,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107612122] [2024-11-13 16:00:32,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107612122] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:00:32,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:00:32,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 16:00:32,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103610061] [2024-11-13 16:00:32,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:00:32,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:00:32,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:00:32,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:00:32,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:00:32,020 INFO L87 Difference]: Start difference. First operand 109127 states and 121160 transitions. Second operand has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states 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 16:00:33,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:00:33,538 INFO L93 Difference]: Finished difference Result 228248 states and 253364 transitions. [2024-11-13 16:00:33,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:00:33,539 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 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 412 [2024-11-13 16:00:33,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:00:33,663 INFO L225 Difference]: With dead ends: 228248 [2024-11-13 16:00:33,663 INFO L226 Difference]: Without dead ends: 119326 [2024-11-13 16:00:33,714 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:00:33,715 INFO L432 NwaCegarLoop]: 364 mSDtfsCounter, 184 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 591 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-13 16:00:33,716 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 390 Invalid, 628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 591 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-13 16:00:33,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119326 states. [2024-11-13 16:00:35,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119326 to 119321. [2024-11-13 16:00:35,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119321 states, 119320 states have (on average 1.1055062018102582) internal successors, (131909), 119320 states have internal predecessors, (131909), 0 states have call successors, (0), 0 states 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 16:00:35,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119321 states to 119321 states and 131909 transitions. [2024-11-13 16:00:35,716 INFO L78 Accepts]: Start accepts. Automaton has 119321 states and 131909 transitions. Word has length 412 [2024-11-13 16:00:35,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:00:35,716 INFO L471 AbstractCegarLoop]: Abstraction has 119321 states and 131909 transitions. [2024-11-13 16:00:35,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states 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 16:00:35,716 INFO L276 IsEmpty]: Start isEmpty. Operand 119321 states and 131909 transitions. [2024-11-13 16:00:35,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2024-11-13 16:00:35,766 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:00:35,766 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:00:35,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-13 16:00:35,767 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:00:35,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:00:35,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1820266702, now seen corresponding path program 1 times [2024-11-13 16:00:35,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:00:35,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756041655] [2024-11-13 16:00:35,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:00:35,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:00:35,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:00:36,298 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 275 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2024-11-13 16:00:36,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:00:36,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756041655] [2024-11-13 16:00:36,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756041655] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:00:36,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:00:36,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 16:00:36,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532308630] [2024-11-13 16:00:36,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:00:36,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:00:36,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:00:36,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:00:36,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:00:36,301 INFO L87 Difference]: Start difference. First operand 119321 states and 131909 transitions. Second operand has 4 states, 4 states have (on average 68.5) internal successors, (274), 3 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)