./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem03_label20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem03_label20.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 1405ce2683e9fc1142823331bc73f3fedb50a2caefebf44893a593622c3225ed --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 18:39:42,615 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 18:39:42,694 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 18:39:42,699 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 18:39:42,700 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 18:39:42,724 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 18:39:42,725 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 18:39:42,725 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 18:39:42,726 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 18:39:42,727 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 18:39:42,728 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 18:39:42,728 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 18:39:42,728 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 18:39:42,730 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 18:39:42,730 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 18:39:42,730 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 18:39:42,731 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 18:39:42,731 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 18:39:42,731 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 18:39:42,731 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 18:39:42,731 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 18:39:42,735 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 18:39:42,735 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 18:39:42,735 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 18:39:42,735 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 18:39:42,736 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 18:39:42,736 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 18:39:42,736 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 18:39:42,736 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 18:39:42,736 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 18:39:42,737 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 18:39:42,737 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 18:39:42,737 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 18:39:42,737 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 18:39:42,737 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 18:39:42,737 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 18:39:42,738 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 18:39:42,738 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 18:39:42,738 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 18:39:42,738 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 18:39:42,739 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 18:39:42,739 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 18:39:42,740 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1405ce2683e9fc1142823331bc73f3fedb50a2caefebf44893a593622c3225ed [2024-11-09 18:39:42,931 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 18:39:42,951 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 18:39:42,954 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 18:39:42,954 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 18:39:42,955 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 18:39:42,956 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem03_label20.c [2024-11-09 18:39:44,235 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 18:39:44,514 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 18:39:44,516 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label20.c [2024-11-09 18:39:44,533 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9406cc798/b47334a444ea4a3f92d063194c9d5dc3/FLAG430250a89 [2024-11-09 18:39:44,813 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9406cc798/b47334a444ea4a3f92d063194c9d5dc3 [2024-11-09 18:39:44,814 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 18:39:44,816 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 18:39:44,816 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 18:39:44,816 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 18:39:44,820 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 18:39:44,821 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:39:44" (1/1) ... [2024-11-09 18:39:44,822 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f331ec3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:39:44, skipping insertion in model container [2024-11-09 18:39:44,822 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:39:44" (1/1) ... [2024-11-09 18:39:44,871 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 18:39:45,282 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label20.c[60555,60568] [2024-11-09 18:39:45,307 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 18:39:45,317 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 18:39:45,444 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label20.c[60555,60568] [2024-11-09 18:39:45,450 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 18:39:45,465 INFO L204 MainTranslator]: Completed translation [2024-11-09 18:39:45,466 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:39:45 WrapperNode [2024-11-09 18:39:45,466 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 18:39:45,467 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 18:39:45,467 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 18:39:45,467 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 18:39:45,471 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:39:45" (1/1) ... [2024-11-09 18:39:45,500 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:39:45" (1/1) ... [2024-11-09 18:39:45,568 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1771 [2024-11-09 18:39:45,569 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 18:39:45,570 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 18:39:45,570 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 18:39:45,570 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 18:39:45,578 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:39:45" (1/1) ... [2024-11-09 18:39:45,578 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:39:45" (1/1) ... [2024-11-09 18:39:45,586 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:39:45" (1/1) ... [2024-11-09 18:39:45,624 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]. [2024-11-09 18:39:45,624 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:39:45" (1/1) ... [2024-11-09 18:39:45,624 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:39:45" (1/1) ... [2024-11-09 18:39:45,658 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:39:45" (1/1) ... [2024-11-09 18:39:45,664 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:39:45" (1/1) ... [2024-11-09 18:39:45,670 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:39:45" (1/1) ... [2024-11-09 18:39:45,675 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:39:45" (1/1) ... [2024-11-09 18:39:45,684 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 18:39:45,685 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 18:39:45,685 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 18:39:45,685 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 18:39:45,687 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:39:45" (1/1) ... [2024-11-09 18:39:45,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 18:39:45,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:39:45,711 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 18:39:45,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 18:39:45,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 18:39:45,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 18:39:45,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 18:39:45,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 18:39:45,819 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 18:39:45,820 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 18:39:47,086 INFO L? ?]: Removed 147 outVars from TransFormulas that were not future-live. [2024-11-09 18:39:47,086 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 18:39:47,108 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 18:39:47,110 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 18:39:47,110 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 06:39:47 BoogieIcfgContainer [2024-11-09 18:39:47,110 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 18:39:47,112 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 18:39:47,113 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 18:39:47,115 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 18:39:47,115 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 06:39:44" (1/3) ... [2024-11-09 18:39:47,116 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76d653fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:39:47, skipping insertion in model container [2024-11-09 18:39:47,116 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:39:45" (2/3) ... [2024-11-09 18:39:47,116 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76d653fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:39:47, skipping insertion in model container [2024-11-09 18:39:47,117 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 06:39:47" (3/3) ... [2024-11-09 18:39:47,117 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label20.c [2024-11-09 18:39:47,129 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 18:39:47,129 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 18:39:47,186 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 18:39:47,193 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;@63efe52a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 18:39:47,193 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 18:39:47,198 INFO L276 IsEmpty]: Start isEmpty. Operand has 305 states, 303 states have (on average 1.7227722772277227) internal successors, (522), 304 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:39:47,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-11-09 18:39:47,214 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:39:47,214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:39:47,215 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:39:47,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:39:47,219 INFO L85 PathProgramCache]: Analyzing trace with hash -2128077963, now seen corresponding path program 1 times [2024-11-09 18:39:47,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:39:47,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467485341] [2024-11-09 18:39:47,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:39:47,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:39:47,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:39:47,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:39:47,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:39:47,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467485341] [2024-11-09 18:39:47,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467485341] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:39:47,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:39:47,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 18:39:47,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074382622] [2024-11-09 18:39:47,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:39:47,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:39:47,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:39:47,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:39:47,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:39:47,970 INFO L87 Difference]: Start difference. First operand has 305 states, 303 states have (on average 1.7227722772277227) internal successors, (522), 304 states have internal predecessors, (522), 0 states have call successors, (0), 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 65.66666666666667) internal successors, (197), 2 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:39:48,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:39:48,819 INFO L93 Difference]: Finished difference Result 863 states and 1504 transitions. [2024-11-09 18:39:48,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:39:48,823 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 2 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 197 [2024-11-09 18:39:48,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:39:48,832 INFO L225 Difference]: With dead ends: 863 [2024-11-09 18:39:48,832 INFO L226 Difference]: Without dead ends: 465 [2024-11-09 18:39:48,835 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 [2024-11-09 18:39:48,837 INFO L432 NwaCegarLoop]: 151 mSDtfsCounter, 93 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 18:39:48,838 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 191 Invalid, 826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 690 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 18:39:48,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2024-11-09 18:39:48,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 463. [2024-11-09 18:39:48,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 462 states have (on average 1.5346320346320346) internal successors, (709), 462 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:39:48,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 709 transitions. [2024-11-09 18:39:48,877 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 709 transitions. Word has length 197 [2024-11-09 18:39:48,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:39:48,878 INFO L471 AbstractCegarLoop]: Abstraction has 463 states and 709 transitions. [2024-11-09 18:39:48,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 2 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:39:48,879 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 709 transitions. [2024-11-09 18:39:48,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-11-09 18:39:48,882 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:39:48,882 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:39:48,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 18:39:48,882 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:39:48,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:39:48,883 INFO L85 PathProgramCache]: Analyzing trace with hash -823472081, now seen corresponding path program 1 times [2024-11-09 18:39:48,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:39:48,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093203138] [2024-11-09 18:39:48,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:39:48,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:39:48,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:39:49,069 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:39:49,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:39:49,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093203138] [2024-11-09 18:39:49,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093203138] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:39:49,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:39:49,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 18:39:49,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938915607] [2024-11-09 18:39:49,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:39:49,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:39:49,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:39:49,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:39:49,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:39:49,074 INFO L87 Difference]: Start difference. First operand 463 states and 709 transitions. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:39:49,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:39:49,708 INFO L93 Difference]: Finished difference Result 1352 states and 2087 transitions. [2024-11-09 18:39:49,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:39:49,709 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 206 [2024-11-09 18:39:49,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:39:49,711 INFO L225 Difference]: With dead ends: 1352 [2024-11-09 18:39:49,712 INFO L226 Difference]: Without dead ends: 891 [2024-11-09 18:39:49,713 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 [2024-11-09 18:39:49,713 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 250 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 18:39:49,714 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 94 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 18:39:49,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2024-11-09 18:39:49,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 875. [2024-11-09 18:39:49,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 875 states, 874 states have (on average 1.5102974828375286) internal successors, (1320), 874 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:39:49,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 875 states to 875 states and 1320 transitions. [2024-11-09 18:39:49,741 INFO L78 Accepts]: Start accepts. Automaton has 875 states and 1320 transitions. Word has length 206 [2024-11-09 18:39:49,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:39:49,741 INFO L471 AbstractCegarLoop]: Abstraction has 875 states and 1320 transitions. [2024-11-09 18:39:49,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:39:49,741 INFO L276 IsEmpty]: Start isEmpty. Operand 875 states and 1320 transitions. [2024-11-09 18:39:49,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2024-11-09 18:39:49,745 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:39:49,745 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:39:49,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 18:39:49,746 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:39:49,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:39:49,746 INFO L85 PathProgramCache]: Analyzing trace with hash 461405442, now seen corresponding path program 1 times [2024-11-09 18:39:49,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:39:49,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417955152] [2024-11-09 18:39:49,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:39:49,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:39:49,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:39:50,367 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 18:39:50,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:39:50,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417955152] [2024-11-09 18:39:50,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417955152] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:39:50,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:39:50,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 18:39:50,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366349664] [2024-11-09 18:39:50,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:39:50,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 18:39:50,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:39:50,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 18:39:50,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 18:39:50,375 INFO L87 Difference]: Start difference. First operand 875 states and 1320 transitions. Second operand has 4 states, 4 states have (on average 52.0) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:39:51,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:39:51,166 INFO L93 Difference]: Finished difference Result 1895 states and 2897 transitions. [2024-11-09 18:39:51,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 18:39:51,166 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 52.0) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 214 [2024-11-09 18:39:51,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:39:51,170 INFO L225 Difference]: With dead ends: 1895 [2024-11-09 18:39:51,170 INFO L226 Difference]: Without dead ends: 847 [2024-11-09 18:39:51,171 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 [2024-11-09 18:39:51,172 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 331 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 802 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 18:39:51,172 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 52 Invalid, 979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 802 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 18:39:51,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2024-11-09 18:39:51,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 847. [2024-11-09 18:39:51,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 847 states, 846 states have (on average 1.3628841607565012) internal successors, (1153), 846 states have internal predecessors, (1153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:39:51,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1153 transitions. [2024-11-09 18:39:51,188 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1153 transitions. Word has length 214 [2024-11-09 18:39:51,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:39:51,189 INFO L471 AbstractCegarLoop]: Abstraction has 847 states and 1153 transitions. [2024-11-09 18:39:51,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.0) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:39:51,189 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1153 transitions. [2024-11-09 18:39:51,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-11-09 18:39:51,192 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:39:51,192 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:39:51,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 18:39:51,193 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:39:51,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:39:51,193 INFO L85 PathProgramCache]: Analyzing trace with hash 556112556, now seen corresponding path program 1 times [2024-11-09 18:39:51,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:39:51,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245255739] [2024-11-09 18:39:51,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:39:51,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:39:51,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:39:51,376 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:39:51,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:39:51,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245255739] [2024-11-09 18:39:51,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245255739] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:39:51,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:39:51,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 18:39:51,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613428590] [2024-11-09 18:39:51,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:39:51,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:39:51,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:39:51,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:39:51,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:39:51,379 INFO L87 Difference]: Start difference. First operand 847 states and 1153 transitions. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 2 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:39:51,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:39:51,914 INFO L93 Difference]: Finished difference Result 2521 states and 3436 transitions. [2024-11-09 18:39:51,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:39:51,915 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 2 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 221 [2024-11-09 18:39:51,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:39:51,919 INFO L225 Difference]: With dead ends: 2521 [2024-11-09 18:39:51,919 INFO L226 Difference]: Without dead ends: 1676 [2024-11-09 18:39:51,920 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 [2024-11-09 18:39:51,921 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 230 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 18:39:51,921 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 74 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 18:39:51,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1676 states. [2024-11-09 18:39:51,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1676 to 1672. [2024-11-09 18:39:51,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1672 states, 1671 states have (on average 1.3237582286056253) internal successors, (2212), 1671 states have internal predecessors, (2212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:39:51,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1672 states to 1672 states and 2212 transitions. [2024-11-09 18:39:51,943 INFO L78 Accepts]: Start accepts. Automaton has 1672 states and 2212 transitions. Word has length 221 [2024-11-09 18:39:51,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:39:51,943 INFO L471 AbstractCegarLoop]: Abstraction has 1672 states and 2212 transitions. [2024-11-09 18:39:51,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 2 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:39:51,944 INFO L276 IsEmpty]: Start isEmpty. Operand 1672 states and 2212 transitions. [2024-11-09 18:39:51,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2024-11-09 18:39:51,947 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:39:51,947 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:39:51,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 18:39:51,947 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:39:51,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:39:51,948 INFO L85 PathProgramCache]: Analyzing trace with hash -153042044, now seen corresponding path program 1 times [2024-11-09 18:39:51,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:39:51,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841535219] [2024-11-09 18:39:51,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:39:51,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:39:51,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:39:52,137 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:39:52,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:39:52,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841535219] [2024-11-09 18:39:52,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841535219] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:39:52,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:39:52,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 18:39:52,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153226385] [2024-11-09 18:39:52,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:39:52,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:39:52,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:39:52,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:39:52,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:39:52,140 INFO L87 Difference]: Start difference. First operand 1672 states and 2212 transitions. Second operand has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 2 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:39:52,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:39:52,665 INFO L93 Difference]: Finished difference Result 4179 states and 5517 transitions. [2024-11-09 18:39:52,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:39:52,665 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 2 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 226 [2024-11-09 18:39:52,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:39:52,672 INFO L225 Difference]: With dead ends: 4179 [2024-11-09 18:39:52,672 INFO L226 Difference]: Without dead ends: 2509 [2024-11-09 18:39:52,674 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 [2024-11-09 18:39:52,674 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 204 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 565 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 18:39:52,675 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 61 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 565 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 18:39:52,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2509 states. [2024-11-09 18:39:52,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2509 to 2505. [2024-11-09 18:39:52,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2505 states, 2504 states have (on average 1.3150958466453675) internal successors, (3293), 2504 states have internal predecessors, (3293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:39:52,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2505 states to 2505 states and 3293 transitions. [2024-11-09 18:39:52,739 INFO L78 Accepts]: Start accepts. Automaton has 2505 states and 3293 transitions. Word has length 226 [2024-11-09 18:39:52,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:39:52,739 INFO L471 AbstractCegarLoop]: Abstraction has 2505 states and 3293 transitions. [2024-11-09 18:39:52,739 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 2 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:39:52,739 INFO L276 IsEmpty]: Start isEmpty. Operand 2505 states and 3293 transitions. [2024-11-09 18:39:52,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2024-11-09 18:39:52,744 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:39:52,744 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:39:52,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 18:39:52,744 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:39:52,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:39:52,745 INFO L85 PathProgramCache]: Analyzing trace with hash 2044825152, now seen corresponding path program 1 times [2024-11-09 18:39:52,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:39:52,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72475066] [2024-11-09 18:39:52,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:39:52,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:39:52,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:39:53,201 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:39:53,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:39:53,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72475066] [2024-11-09 18:39:53,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72475066] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:39:53,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:39:53,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 18:39:53,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507188773] [2024-11-09 18:39:53,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:39:53,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 18:39:53,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:39:53,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 18:39:53,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 18:39:53,203 INFO L87 Difference]: Start difference. First operand 2505 states and 3293 transitions. Second operand has 4 states, 4 states have (on average 57.25) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:39:54,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:39:54,087 INFO L93 Difference]: Finished difference Result 7015 states and 9256 transitions. [2024-11-09 18:39:54,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 18:39:54,087 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.25) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 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 229 [2024-11-09 18:39:54,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:39:54,099 INFO L225 Difference]: With dead ends: 7015 [2024-11-09 18:39:54,099 INFO L226 Difference]: Without dead ends: 4162 [2024-11-09 18:39:54,103 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 [2024-11-09 18:39:54,104 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 195 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 1009 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 1157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 1009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 18:39:54,105 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 127 Invalid, 1157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 1009 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 18:39:54,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4162 states. [2024-11-09 18:39:54,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4162 to 4161. [2024-11-09 18:39:54,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4161 states, 4160 states have (on average 1.2959134615384615) internal successors, (5391), 4160 states have internal predecessors, (5391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:39:54,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4161 states to 4161 states and 5391 transitions. [2024-11-09 18:39:54,202 INFO L78 Accepts]: Start accepts. Automaton has 4161 states and 5391 transitions. Word has length 229 [2024-11-09 18:39:54,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:39:54,203 INFO L471 AbstractCegarLoop]: Abstraction has 4161 states and 5391 transitions. [2024-11-09 18:39:54,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.25) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:39:54,204 INFO L276 IsEmpty]: Start isEmpty. Operand 4161 states and 5391 transitions. [2024-11-09 18:39:54,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2024-11-09 18:39:54,212 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:39:54,212 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:39:54,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 18:39:54,212 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:39:54,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:39:54,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1308281047, now seen corresponding path program 1 times [2024-11-09 18:39:54,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:39:54,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963473880] [2024-11-09 18:39:54,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:39:54,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:39:54,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:39:54,494 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 36 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:39:54,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:39:54,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963473880] [2024-11-09 18:39:54,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963473880] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:39:54,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868844534] [2024-11-09 18:39:54,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:39:54,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:39:54,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:39:54,496 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:39:54,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 18:39:54,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:39:54,626 INFO L255 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 18:39:54,663 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:39:54,872 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 18:39:54,872 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 18:39:54,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868844534] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:39:54,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 18:39:54,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-09 18:39:54,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588127504] [2024-11-09 18:39:54,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:39:54,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:39:54,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:39:54,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:39:54,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 18:39:54,875 INFO L87 Difference]: Start difference. First operand 4161 states and 5391 transitions. Second operand has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:39:55,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:39:55,416 INFO L93 Difference]: Finished difference Result 12427 states and 16112 transitions. [2024-11-09 18:39:55,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:39:55,417 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 234 [2024-11-09 18:39:55,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:39:55,438 INFO L225 Difference]: With dead ends: 12427 [2024-11-09 18:39:55,438 INFO L226 Difference]: Without dead ends: 8268 [2024-11-09 18:39:55,443 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 18:39:55,445 INFO L432 NwaCegarLoop]: 321 mSDtfsCounter, 34 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 18:39:55,445 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 348 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 18:39:55,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8268 states. [2024-11-09 18:39:55,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8268 to 8241. [2024-11-09 18:39:55,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8241 states, 8240 states have (on average 1.2736650485436893) internal successors, (10495), 8240 states have internal predecessors, (10495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:39:55,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8241 states to 8241 states and 10495 transitions. [2024-11-09 18:39:55,555 INFO L78 Accepts]: Start accepts. Automaton has 8241 states and 10495 transitions. Word has length 234 [2024-11-09 18:39:55,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:39:55,556 INFO L471 AbstractCegarLoop]: Abstraction has 8241 states and 10495 transitions. [2024-11-09 18:39:55,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:39:55,556 INFO L276 IsEmpty]: Start isEmpty. Operand 8241 states and 10495 transitions. [2024-11-09 18:39:55,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2024-11-09 18:39:55,566 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:39:55,567 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:39:55,582 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 18:39:55,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:39:55,771 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:39:55,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:39:55,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1083253656, now seen corresponding path program 1 times [2024-11-09 18:39:55,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:39:55,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123294304] [2024-11-09 18:39:55,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:39:55,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:39:55,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:39:56,037 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 49 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 18:39:56,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:39:56,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123294304] [2024-11-09 18:39:56,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123294304] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:39:56,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750541403] [2024-11-09 18:39:56,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:39:56,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:39:56,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:39:56,040 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:39:56,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 18:39:56,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:39:56,160 INFO L255 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 18:39:56,163 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:39:56,180 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 18:39:56,180 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 18:39:56,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [750541403] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:39:56,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 18:39:56,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-09 18:39:56,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959140753] [2024-11-09 18:39:56,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:39:56,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:39:56,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:39:56,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:39:56,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 18:39:56,182 INFO L87 Difference]: Start difference. First operand 8241 states and 10495 transitions. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:39:56,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:39:56,669 INFO L93 Difference]: Finished difference Result 24238 states and 30901 transitions. [2024-11-09 18:39:56,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:39:56,670 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 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 241 [2024-11-09 18:39:56,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:39:56,733 INFO L225 Difference]: With dead ends: 24238 [2024-11-09 18:39:56,734 INFO L226 Difference]: Without dead ends: 15999 [2024-11-09 18:39:56,743 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 18:39:56,745 INFO L432 NwaCegarLoop]: 325 mSDtfsCounter, 213 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 18:39:56,745 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 346 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 18:39:56,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15999 states. [2024-11-09 18:39:56,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15999 to 15585. [2024-11-09 18:39:56,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15585 states, 15584 states have (on average 1.1721637577002053) internal successors, (18267), 15584 states have internal predecessors, (18267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:39:56,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15585 states to 15585 states and 18267 transitions. [2024-11-09 18:39:56,935 INFO L78 Accepts]: Start accepts. Automaton has 15585 states and 18267 transitions. Word has length 241 [2024-11-09 18:39:56,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:39:56,936 INFO L471 AbstractCegarLoop]: Abstraction has 15585 states and 18267 transitions. [2024-11-09 18:39:56,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:39:56,936 INFO L276 IsEmpty]: Start isEmpty. Operand 15585 states and 18267 transitions. [2024-11-09 18:39:56,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2024-11-09 18:39:56,955 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:39:56,955 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:39:56,969 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 18:39:57,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-09 18:39:57,156 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:39:57,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:39:57,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1012451465, now seen corresponding path program 1 times [2024-11-09 18:39:57,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:39:57,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597288280] [2024-11-09 18:39:57,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:39:57,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:39:57,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:39:57,603 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 49 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:39:57,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:39:57,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597288280] [2024-11-09 18:39:57,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597288280] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:39:57,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041998445] [2024-11-09 18:39:57,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:39:57,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:39:57,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:39:57,605 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:39:57,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 18:39:57,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:39:57,727 INFO L255 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 18:39:57,730 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:39:57,915 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 18:39:57,916 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 18:39:57,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041998445] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:39:57,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 18:39:57,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-09 18:39:57,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168136990] [2024-11-09 18:39:57,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:39:57,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:39:57,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:39:57,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:39:57,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-09 18:39:57,918 INFO L87 Difference]: Start difference. First operand 15585 states and 18267 transitions. Second operand has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:39:58,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:39:58,370 INFO L93 Difference]: Finished difference Result 31174 states and 36542 transitions. [2024-11-09 18:39:58,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:39:58,371 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 247 [2024-11-09 18:39:58,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:39:58,390 INFO L225 Difference]: With dead ends: 31174 [2024-11-09 18:39:58,390 INFO L226 Difference]: Without dead ends: 15591 [2024-11-09 18:39:58,405 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-09 18:39:58,406 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 73 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 18:39:58,406 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 51 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 18:39:58,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15591 states. [2024-11-09 18:39:58,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15591 to 15585. [2024-11-09 18:39:58,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15585 states, 15584 states have (on average 1.170238706365503) internal successors, (18237), 15584 states have internal predecessors, (18237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:39:58,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15585 states to 15585 states and 18237 transitions. [2024-11-09 18:39:58,594 INFO L78 Accepts]: Start accepts. Automaton has 15585 states and 18237 transitions. Word has length 247 [2024-11-09 18:39:58,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:39:58,595 INFO L471 AbstractCegarLoop]: Abstraction has 15585 states and 18237 transitions. [2024-11-09 18:39:58,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:39:58,595 INFO L276 IsEmpty]: Start isEmpty. Operand 15585 states and 18237 transitions. [2024-11-09 18:39:58,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2024-11-09 18:39:58,613 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:39:58,613 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 18:39:58,627 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 18:39:58,817 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:39:58,821 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:39:58,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:39:58,821 INFO L85 PathProgramCache]: Analyzing trace with hash 770765430, now seen corresponding path program 1 times [2024-11-09 18:39:58,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:39:58,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51565290] [2024-11-09 18:39:58,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:39:58,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:39:58,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:39:59,000 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:39:59,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:39:59,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51565290] [2024-11-09 18:39:59,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51565290] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:39:59,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:39:59,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 18:39:59,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112992990] [2024-11-09 18:39:59,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:39:59,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:39:59,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:39:59,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:39:59,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:39:59,002 INFO L87 Difference]: Start difference. First operand 15585 states and 18237 transitions. Second operand has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 2 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) [2024-11-09 18:39:59,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:39:59,561 INFO L93 Difference]: Finished difference Result 38308 states and 45588 transitions. [2024-11-09 18:39:59,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:39:59,562 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 2 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 [2024-11-09 18:39:59,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:39:59,592 INFO L225 Difference]: With dead ends: 38308 [2024-11-09 18:39:59,592 INFO L226 Difference]: Without dead ends: 22725 [2024-11-09 18:39:59,608 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 [2024-11-09 18:39:59,609 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 134 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 18:39:59,610 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 131 Invalid, 589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 18:39:59,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22725 states. [2024-11-09 18:39:59,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22725 to 22725. [2024-11-09 18:39:59,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22725 states, 22724 states have (on average 1.135847562048935) internal successors, (25811), 22724 states have internal predecessors, (25811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:39:59,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22725 states to 22725 states and 25811 transitions. [2024-11-09 18:39:59,841 INFO L78 Accepts]: Start accepts. Automaton has 22725 states and 25811 transitions. Word has length 280 [2024-11-09 18:39:59,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:39:59,841 INFO L471 AbstractCegarLoop]: Abstraction has 22725 states and 25811 transitions. [2024-11-09 18:39:59,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 2 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) [2024-11-09 18:39:59,841 INFO L276 IsEmpty]: Start isEmpty. Operand 22725 states and 25811 transitions. [2024-11-09 18:39:59,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2024-11-09 18:39:59,865 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:39:59,865 INFO L215 NwaCegarLoop]: trace histogram [5, 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, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:39:59,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 18:39:59,866 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:39:59,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:39:59,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1704249789, now seen corresponding path program 1 times [2024-11-09 18:39:59,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:39:59,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874815642] [2024-11-09 18:39:59,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:39:59,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:39:59,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:40:00,854 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 116 proven. 7 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-11-09 18:40:00,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:40:00,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874815642] [2024-11-09 18:40:00,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874815642] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:40:00,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273348266] [2024-11-09 18:40:00,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:40:00,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:40:00,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:40:00,856 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:40:00,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 18:40:00,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:40:00,985 INFO L255 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 18:40:00,989 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:40:01,033 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 182 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-09 18:40:01,035 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 18:40:01,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [273348266] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:40:01,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 18:40:01,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-09 18:40:01,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89227696] [2024-11-09 18:40:01,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:40:01,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:40:01,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:40:01,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:40:01,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 18:40:01,037 INFO L87 Difference]: Start difference. First operand 22725 states and 25811 transitions. Second operand has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:40:01,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:40:01,584 INFO L93 Difference]: Finished difference Result 57103 states and 65155 transitions. [2024-11-09 18:40:01,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:40:01,585 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 303 [2024-11-09 18:40:01,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:40:01,622 INFO L225 Difference]: With dead ends: 57103 [2024-11-09 18:40:01,622 INFO L226 Difference]: Without dead ends: 34380 [2024-11-09 18:40:01,637 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 18:40:01,637 INFO L432 NwaCegarLoop]: 331 mSDtfsCounter, 191 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 18:40:01,638 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 354 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 552 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 18:40:01,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34380 states. [2024-11-09 18:40:01,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34380 to 33351. [2024-11-09 18:40:01,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33351 states, 33350 states have (on average 1.1311544227886057) internal successors, (37724), 33350 states have internal predecessors, (37724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:40:01,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33351 states to 33351 states and 37724 transitions. [2024-11-09 18:40:01,937 INFO L78 Accepts]: Start accepts. Automaton has 33351 states and 37724 transitions. Word has length 303 [2024-11-09 18:40:01,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:40:01,937 INFO L471 AbstractCegarLoop]: Abstraction has 33351 states and 37724 transitions. [2024-11-09 18:40:01,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:40:01,938 INFO L276 IsEmpty]: Start isEmpty. Operand 33351 states and 37724 transitions. [2024-11-09 18:40:01,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2024-11-09 18:40:01,963 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:40:01,964 INFO L215 NwaCegarLoop]: trace histogram [5, 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, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:40:01,978 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 18:40:02,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:40:02,168 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:40:02,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:40:02,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1410320810, now seen corresponding path program 1 times [2024-11-09 18:40:02,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:40:02,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049755632] [2024-11-09 18:40:02,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:40:02,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:40:02,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:40:03,021 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 116 proven. 7 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2024-11-09 18:40:03,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:40:03,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049755632] [2024-11-09 18:40:03,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049755632] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:40:03,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308868987] [2024-11-09 18:40:03,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:40:03,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:40:03,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:40:03,023 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:40:03,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 18:40:03,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:40:03,152 INFO L255 TraceCheckSpWp]: Trace formula consists of 590 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 18:40:03,156 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:40:03,424 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 125 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2024-11-09 18:40:03,424 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:40:03,688 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 125 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2024-11-09 18:40:03,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1308868987] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:40:03,688 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:40:03,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 6 [2024-11-09 18:40:03,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143883500] [2024-11-09 18:40:03,689 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:40:03,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 18:40:03,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:40:03,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 18:40:03,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-09 18:40:03,690 INFO L87 Difference]: Start difference. First operand 33351 states and 37724 transitions. Second operand has 7 states, 7 states have (on average 70.42857142857143) internal successors, (493), 6 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:40:05,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:40:05,746 INFO L93 Difference]: Finished difference Result 100677 states and 113900 transitions. [2024-11-09 18:40:05,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 18:40:05,747 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 70.42857142857143) internal successors, (493), 6 states have internal predecessors, (493), 0 states have call successors, (0), 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 323 [2024-11-09 18:40:05,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:40:05,827 INFO L225 Difference]: With dead ends: 100677 [2024-11-09 18:40:05,827 INFO L226 Difference]: Without dead ends: 67328 [2024-11-09 18:40:05,858 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 652 GetRequests, 643 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-09 18:40:05,858 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 1188 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 3417 mSolverCounterSat, 305 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1188 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 3722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 305 IncrementalHoareTripleChecker+Valid, 3417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-09 18:40:05,859 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1188 Valid, 254 Invalid, 3722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [305 Valid, 3417 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-09 18:40:05,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67328 states. [2024-11-09 18:40:06,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67328 to 61764. [2024-11-09 18:40:06,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61764 states, 61763 states have (on average 1.1285397406214077) internal successors, (69702), 61763 states have internal predecessors, (69702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:40:06,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61764 states to 61764 states and 69702 transitions. [2024-11-09 18:40:06,628 INFO L78 Accepts]: Start accepts. Automaton has 61764 states and 69702 transitions. Word has length 323 [2024-11-09 18:40:06,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:40:06,628 INFO L471 AbstractCegarLoop]: Abstraction has 61764 states and 69702 transitions. [2024-11-09 18:40:06,629 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 70.42857142857143) internal successors, (493), 6 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:40:06,629 INFO L276 IsEmpty]: Start isEmpty. Operand 61764 states and 69702 transitions. [2024-11-09 18:40:06,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2024-11-09 18:40:06,656 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:40:06,656 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-09 18:40:06,670 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 18:40:06,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-09 18:40:06,857 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:40:06,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:40:06,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1619632529, now seen corresponding path program 1 times [2024-11-09 18:40:06,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:40:06,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692580058] [2024-11-09 18:40:06,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:40:06,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:40:06,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:40:07,248 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 150 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-11-09 18:40:07,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:40:07,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692580058] [2024-11-09 18:40:07,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692580058] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:40:07,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:40:07,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 18:40:07,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649844099] [2024-11-09 18:40:07,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:40:07,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:40:07,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:40:07,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:40:07,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:40:07,249 INFO L87 Difference]: Start difference. First operand 61764 states and 69702 transitions. Second operand has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 2 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) [2024-11-09 18:40:08,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:40:08,008 INFO L93 Difference]: Finished difference Result 160147 states and 180863 transitions. [2024-11-09 18:40:08,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:40:08,009 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 2 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) Word has length 356 [2024-11-09 18:40:08,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:40:08,110 INFO L225 Difference]: With dead ends: 160147 [2024-11-09 18:40:08,111 INFO L226 Difference]: Without dead ends: 99609 [2024-11-09 18:40:08,157 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 [2024-11-09 18:40:08,157 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 158 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 18:40:08,158 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 71 Invalid, 636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 18:40:08,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99609 states. [2024-11-09 18:40:09,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99609 to 99196. [2024-11-09 18:40:09,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99196 states, 99195 states have (on average 1.127728212107465) internal successors, (111865), 99195 states have internal predecessors, (111865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:40:09,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99196 states to 99196 states and 111865 transitions. [2024-11-09 18:40:09,572 INFO L78 Accepts]: Start accepts. Automaton has 99196 states and 111865 transitions. Word has length 356 [2024-11-09 18:40:09,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:40:09,572 INFO L471 AbstractCegarLoop]: Abstraction has 99196 states and 111865 transitions. [2024-11-09 18:40:09,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 2 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) [2024-11-09 18:40:09,573 INFO L276 IsEmpty]: Start isEmpty. Operand 99196 states and 111865 transitions. [2024-11-09 18:40:09,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2024-11-09 18:40:09,619 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:40:09,619 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:40:09,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 18:40:09,619 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:40:09,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:40:09,620 INFO L85 PathProgramCache]: Analyzing trace with hash 2106907886, now seen corresponding path program 1 times [2024-11-09 18:40:09,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:40:09,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000665438] [2024-11-09 18:40:09,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:40:09,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:40:09,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:40:09,925 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 261 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:40:09,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:40:09,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000665438] [2024-11-09 18:40:09,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000665438] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:40:09,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:40:09,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 18:40:09,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337849567] [2024-11-09 18:40:09,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:40:09,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:40:09,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:40:09,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:40:09,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:40:09,927 INFO L87 Difference]: Start difference. First operand 99196 states and 111865 transitions. Second operand has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:40:10,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:40:10,790 INFO L93 Difference]: Finished difference Result 186502 states and 210068 transitions. [2024-11-09 18:40:10,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:40:10,790 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 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 377 [2024-11-09 18:40:10,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:40:10,903 INFO L225 Difference]: With dead ends: 186502 [2024-11-09 18:40:10,903 INFO L226 Difference]: Without dead ends: 88532 [2024-11-09 18:40:10,969 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 [2024-11-09 18:40:10,969 INFO L432 NwaCegarLoop]: 304 mSDtfsCounter, 159 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 18:40:10,970 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 322 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 18:40:11,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88532 states. [2024-11-09 18:40:12,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88532 to 88521. [2024-11-09 18:40:12,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88521 states, 88520 states have (on average 1.1011861726163579) internal successors, (97477), 88520 states have internal predecessors, (97477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:40:12,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88521 states to 88521 states and 97477 transitions. [2024-11-09 18:40:12,209 INFO L78 Accepts]: Start accepts. Automaton has 88521 states and 97477 transitions. Word has length 377 [2024-11-09 18:40:12,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:40:12,210 INFO L471 AbstractCegarLoop]: Abstraction has 88521 states and 97477 transitions. [2024-11-09 18:40:12,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:40:12,210 INFO L276 IsEmpty]: Start isEmpty. Operand 88521 states and 97477 transitions. [2024-11-09 18:40:12,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 490 [2024-11-09 18:40:12,264 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:40:12,264 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 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, 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] [2024-11-09 18:40:12,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-09 18:40:12,264 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:40:12,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:40:12,265 INFO L85 PathProgramCache]: Analyzing trace with hash 2137519453, now seen corresponding path program 1 times [2024-11-09 18:40:12,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:40:12,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302610413] [2024-11-09 18:40:12,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:40:12,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:40:12,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:40:12,704 INFO L134 CoverageAnalysis]: Checked inductivity of 671 backedges. 210 proven. 0 refuted. 0 times theorem prover too weak. 461 trivial. 0 not checked. [2024-11-09 18:40:12,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:40:12,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302610413] [2024-11-09 18:40:12,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302610413] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:40:12,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:40:12,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 18:40:12,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716555551] [2024-11-09 18:40:12,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:40:12,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 18:40:12,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:40:12,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 18:40:12,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 18:40:12,706 INFO L87 Difference]: Start difference. First operand 88521 states and 97477 transitions. Second operand has 4 states, 4 states have (on average 61.0) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:40:14,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:40:14,080 INFO L93 Difference]: Finished difference Result 256064 states and 281155 transitions. [2024-11-09 18:40:14,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 18:40:14,080 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 61.0) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 489 [2024-11-09 18:40:14,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:40:14,250 INFO L225 Difference]: With dead ends: 256064 [2024-11-09 18:40:14,251 INFO L226 Difference]: Without dead ends: 167545 [2024-11-09 18:40:14,283 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 [2024-11-09 18:40:14,283 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 674 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 674 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 18:40:14,283 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [674 Valid, 339 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 615 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 18:40:14,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167545 states. [2024-11-09 18:40:15,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167545 to 150993. [2024-11-09 18:40:15,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150993 states, 150992 states have (on average 1.0948394616933348) internal successors, (165312), 150992 states have internal predecessors, (165312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:40:16,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150993 states to 150993 states and 165312 transitions. [2024-11-09 18:40:16,192 INFO L78 Accepts]: Start accepts. Automaton has 150993 states and 165312 transitions. Word has length 489 [2024-11-09 18:40:16,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:40:16,192 INFO L471 AbstractCegarLoop]: Abstraction has 150993 states and 165312 transitions. [2024-11-09 18:40:16,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.0) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:40:16,192 INFO L276 IsEmpty]: Start isEmpty. Operand 150993 states and 165312 transitions. [2024-11-09 18:40:16,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 490 [2024-11-09 18:40:16,333 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:40:16,333 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 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, 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] [2024-11-09 18:40:16,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-09 18:40:16,334 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:40:16,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:40:16,335 INFO L85 PathProgramCache]: Analyzing trace with hash 126866977, now seen corresponding path program 2 times [2024-11-09 18:40:16,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:40:16,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137522524] [2024-11-09 18:40:16,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:40:16,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:40:16,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:40:17,207 INFO L134 CoverageAnalysis]: Checked inductivity of 671 backedges. 427 proven. 0 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2024-11-09 18:40:17,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:40:17,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137522524] [2024-11-09 18:40:17,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137522524] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:40:17,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:40:17,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 18:40:17,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373654280] [2024-11-09 18:40:17,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:40:17,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:40:17,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:40:17,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:40:17,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:40:17,210 INFO L87 Difference]: Start difference. First operand 150993 states and 165312 transitions. Second operand has 3 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:40:18,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:40:18,230 INFO L93 Difference]: Finished difference Result 309398 states and 339308 transitions. [2024-11-09 18:40:18,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:40:18,231 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 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 489 [2024-11-09 18:40:18,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:40:18,654 INFO L225 Difference]: With dead ends: 309398 [2024-11-09 18:40:18,654 INFO L226 Difference]: Without dead ends: 159631 [2024-11-09 18:40:18,771 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 [2024-11-09 18:40:18,773 INFO L432 NwaCegarLoop]: 307 mSDtfsCounter, 187 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 18:40:18,773 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 323 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 18:40:18,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159631 states. [2024-11-09 18:40:20,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159631 to 148749. [2024-11-09 18:40:20,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148749 states, 148748 states have (on average 1.0929894855729152) internal successors, (162580), 148748 states have internal predecessors, (162580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:40:20,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148749 states to 148749 states and 162580 transitions. [2024-11-09 18:40:20,874 INFO L78 Accepts]: Start accepts. Automaton has 148749 states and 162580 transitions. Word has length 489 [2024-11-09 18:40:20,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:40:20,875 INFO L471 AbstractCegarLoop]: Abstraction has 148749 states and 162580 transitions. [2024-11-09 18:40:20,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:40:20,875 INFO L276 IsEmpty]: Start isEmpty. Operand 148749 states and 162580 transitions. [2024-11-09 18:40:20,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 595 [2024-11-09 18:40:20,986 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:40:20,987 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:40:20,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-09 18:40:20,987 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:40:20,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:40:20,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1461178413, now seen corresponding path program 1 times [2024-11-09 18:40:20,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:40:20,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419751863] [2024-11-09 18:40:20,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:40:20,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:40:21,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:40:21,908 INFO L134 CoverageAnalysis]: Checked inductivity of 963 backedges. 391 proven. 0 refuted. 0 times theorem prover too weak. 572 trivial. 0 not checked. [2024-11-09 18:40:21,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:40:21,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419751863] [2024-11-09 18:40:21,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419751863] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:40:21,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:40:21,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 18:40:21,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103568753] [2024-11-09 18:40:21,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:40:21,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:40:21,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:40:21,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:40:21,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:40:21,910 INFO L87 Difference]: Start difference. First operand 148749 states and 162580 transitions. Second operand has 3 states, 3 states have (on average 111.0) internal successors, (333), 2 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:40:22,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:40:22,996 INFO L93 Difference]: Finished difference Result 307734 states and 337311 transitions. [2024-11-09 18:40:22,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:40:22,996 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 111.0) internal successors, (333), 2 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 594 [2024-11-09 18:40:22,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:40:23,161 INFO L225 Difference]: With dead ends: 307734 [2024-11-09 18:40:23,161 INFO L226 Difference]: Without dead ends: 160211 [2024-11-09 18:40:23,235 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 [2024-11-09 18:40:23,236 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 90 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 18:40:23,236 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 110 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 18:40:23,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160211 states. [2024-11-09 18:40:25,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160211 to 160168. [2024-11-09 18:40:25,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160168 states, 160167 states have (on average 1.0802599786472868) internal successors, (173022), 160167 states have internal predecessors, (173022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:40:25,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160168 states to 160168 states and 173022 transitions. [2024-11-09 18:40:25,541 INFO L78 Accepts]: Start accepts. Automaton has 160168 states and 173022 transitions. Word has length 594 [2024-11-09 18:40:25,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:40:25,541 INFO L471 AbstractCegarLoop]: Abstraction has 160168 states and 173022 transitions. [2024-11-09 18:40:25,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.0) internal successors, (333), 2 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:40:25,541 INFO L276 IsEmpty]: Start isEmpty. Operand 160168 states and 173022 transitions. [2024-11-09 18:40:25,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 632 [2024-11-09 18:40:25,654 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:40:25,654 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:40:25,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-09 18:40:25,655 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:40:25,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:40:25,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1866060299, now seen corresponding path program 1 times [2024-11-09 18:40:25,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:40:25,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941816958] [2024-11-09 18:40:25,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:40:25,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:40:25,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:40:26,697 INFO L134 CoverageAnalysis]: Checked inductivity of 1203 backedges. 227 proven. 7 refuted. 0 times theorem prover too weak. 969 trivial. 0 not checked. [2024-11-09 18:40:26,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:40:26,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941816958] [2024-11-09 18:40:26,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941816958] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:40:26,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251023511] [2024-11-09 18:40:26,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:40:26,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:40:26,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:40:26,700 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:40:26,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 18:40:27,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:40:27,116 INFO L255 TraceCheckSpWp]: Trace formula consists of 1053 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 18:40:27,121 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:40:27,347 INFO L134 CoverageAnalysis]: Checked inductivity of 1203 backedges. 689 proven. 0 refuted. 0 times theorem prover too weak. 514 trivial. 0 not checked. [2024-11-09 18:40:27,347 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 18:40:27,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251023511] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:40:27,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 18:40:27,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-11-09 18:40:27,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196397061] [2024-11-09 18:40:27,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:40:27,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:40:27,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:40:27,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:40:27,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 18:40:27,349 INFO L87 Difference]: Start difference. First operand 160168 states and 173022 transitions. Second operand has 3 states, 3 states have (on average 112.0) internal successors, (336), 2 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:40:28,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:40:28,546 INFO L93 Difference]: Finished difference Result 448868 states and 485362 transitions. [2024-11-09 18:40:28,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:40:28,546 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 112.0) internal successors, (336), 2 states have internal predecessors, (336), 0 states have call successors, (0), 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 631 [2024-11-09 18:40:28,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:40:28,871 INFO L225 Difference]: With dead ends: 448868 [2024-11-09 18:40:28,872 INFO L226 Difference]: Without dead ends: 289926 [2024-11-09 18:40:28,945 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 633 GetRequests, 630 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 18:40:28,946 INFO L432 NwaCegarLoop]: 270 mSDtfsCounter, 170 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:40:28,946 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 517 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:40:29,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289926 states. [2024-11-09 18:40:32,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289926 to 289923. [2024-11-09 18:40:32,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289923 states, 289922 states have (on average 1.0812390918936818) internal successors, (313475), 289922 states have internal predecessors, (313475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:40:33,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289923 states to 289923 states and 313475 transitions. [2024-11-09 18:40:33,242 INFO L78 Accepts]: Start accepts. Automaton has 289923 states and 313475 transitions. Word has length 631 [2024-11-09 18:40:33,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:40:33,243 INFO L471 AbstractCegarLoop]: Abstraction has 289923 states and 313475 transitions. [2024-11-09 18:40:33,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.0) internal successors, (336), 2 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:40:33,243 INFO L276 IsEmpty]: Start isEmpty. Operand 289923 states and 313475 transitions. [2024-11-09 18:40:33,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 638 [2024-11-09 18:40:33,580 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:40:33,581 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 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, 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, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:40:33,594 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 18:40:33,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-09 18:40:33,782 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:40:33,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:40:33,782 INFO L85 PathProgramCache]: Analyzing trace with hash -901793492, now seen corresponding path program 1 times [2024-11-09 18:40:33,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:40:33,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611776331] [2024-11-09 18:40:33,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:40:33,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:40:33,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:40:34,781 INFO L134 CoverageAnalysis]: Checked inductivity of 1136 backedges. 216 proven. 7 refuted. 0 times theorem prover too weak. 913 trivial. 0 not checked. [2024-11-09 18:40:34,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:40:34,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611776331] [2024-11-09 18:40:34,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611776331] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:40:34,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600348744] [2024-11-09 18:40:34,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:40:34,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:40:34,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:40:34,782 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:40:34,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 18:40:35,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:40:35,004 INFO L255 TraceCheckSpWp]: Trace formula consists of 1005 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 18:40:35,011 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:40:35,109 INFO L134 CoverageAnalysis]: Checked inductivity of 1136 backedges. 617 proven. 0 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2024-11-09 18:40:35,109 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 18:40:35,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600348744] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:40:35,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 18:40:35,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-09 18:40:35,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140008810] [2024-11-09 18:40:35,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:40:35,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:40:35,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:40:35,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:40:35,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 18:40:35,111 INFO L87 Difference]: Start difference. First operand 289923 states and 313475 transitions. Second operand has 3 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:40:36,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:40:36,683 INFO L93 Difference]: Finished difference Result 534152 states and 578286 transitions. [2024-11-09 18:40:36,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:40:36,683 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 0 states have call successors, (0), 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 637 [2024-11-09 18:40:36,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:40:36,980 INFO L225 Difference]: With dead ends: 534152 [2024-11-09 18:40:36,980 INFO L226 Difference]: Without dead ends: 244435 [2024-11-09 18:40:37,123 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 639 GetRequests, 636 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 18:40:37,124 INFO L432 NwaCegarLoop]: 274 mSDtfsCounter, 112 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 18:40:37,124 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 289 Invalid, 583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 510 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 18:40:37,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244435 states.