./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label56.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label56.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 21992ce5086310b9eccd33893912bc55e4a94502535426b80db5bcf53a1c73cc --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-23 21:15:35,771 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-23 21:15:35,857 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-23 21:15:35,862 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-23 21:15:35,863 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-23 21:15:35,888 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-23 21:15:35,891 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-23 21:15:35,891 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-23 21:15:35,892 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-23 21:15:35,893 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-23 21:15:35,894 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-23 21:15:35,894 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-23 21:15:35,895 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-23 21:15:35,895 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-23 21:15:35,895 INFO L153 SettingsManager]: * Use SBE=true [2024-10-23 21:15:35,897 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-23 21:15:35,897 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-23 21:15:35,897 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-23 21:15:35,898 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-23 21:15:35,898 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-23 21:15:35,898 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-23 21:15:35,901 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-23 21:15:35,901 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-23 21:15:35,902 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-23 21:15:35,902 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-23 21:15:35,902 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-23 21:15:35,902 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-23 21:15:35,902 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-23 21:15:35,903 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-23 21:15:35,903 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-23 21:15:35,903 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-23 21:15:35,903 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-23 21:15:35,903 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 21:15:35,904 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-23 21:15:35,904 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-23 21:15:35,904 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-23 21:15:35,904 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-23 21:15:35,904 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-23 21:15:35,905 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-23 21:15:35,905 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-23 21:15:35,905 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-23 21:15:35,906 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-23 21:15:35,906 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 21992ce5086310b9eccd33893912bc55e4a94502535426b80db5bcf53a1c73cc [2024-10-23 21:15:36,128 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-23 21:15:36,152 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-23 21:15:36,155 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-23 21:15:36,156 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-23 21:15:36,156 INFO L274 PluginConnector]: CDTParser initialized [2024-10-23 21:15:36,157 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label56.c [2024-10-23 21:15:37,575 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-23 21:15:37,998 INFO L384 CDTParser]: Found 1 translation units. [2024-10-23 21:15:38,000 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label56.c [2024-10-23 21:15:38,038 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b59d7be7d/9097d2a3665c462c91eae1e277dfe5be/FLAGe00f7d8d2 [2024-10-23 21:15:38,156 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b59d7be7d/9097d2a3665c462c91eae1e277dfe5be [2024-10-23 21:15:38,159 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-23 21:15:38,160 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-23 21:15:38,162 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-23 21:15:38,163 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-23 21:15:38,168 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-23 21:15:38,168 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:15:38" (1/1) ... [2024-10-23 21:15:38,170 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@684debb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:15:38, skipping insertion in model container [2024-10-23 21:15:38,171 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:15:38" (1/1) ... [2024-10-23 21:15:38,298 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-23 21:15:38,614 WARN L248 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/Problem13_label56.c[7559,7572] [2024-10-23 21:15:39,438 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 21:15:39,448 INFO L200 MainTranslator]: Completed pre-run [2024-10-23 21:15:39,477 WARN L248 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/Problem13_label56.c[7559,7572] [2024-10-23 21:15:39,931 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 21:15:39,961 INFO L204 MainTranslator]: Completed translation [2024-10-23 21:15:39,962 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:15:39 WrapperNode [2024-10-23 21:15:39,962 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-23 21:15:39,964 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-23 21:15:39,964 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-23 21:15:39,964 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-23 21:15:39,970 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:15:39" (1/1) ... [2024-10-23 21:15:40,040 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:15:39" (1/1) ... [2024-10-23 21:15:40,655 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5587 [2024-10-23 21:15:40,656 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-23 21:15:40,657 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-23 21:15:40,657 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-23 21:15:40,657 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-23 21:15:40,667 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:15:39" (1/1) ... [2024-10-23 21:15:40,667 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:15:39" (1/1) ... [2024-10-23 21:15:40,926 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:15:39" (1/1) ... [2024-10-23 21:15:41,220 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]. [2024-10-23 21:15:41,220 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:15:39" (1/1) ... [2024-10-23 21:15:41,221 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:15:39" (1/1) ... [2024-10-23 21:15:41,546 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:15:39" (1/1) ... [2024-10-23 21:15:41,598 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:15:39" (1/1) ... [2024-10-23 21:15:41,650 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:15:39" (1/1) ... [2024-10-23 21:15:41,675 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:15:39" (1/1) ... [2024-10-23 21:15:41,754 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-23 21:15:41,756 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-23 21:15:41,756 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-23 21:15:41,757 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-23 21:15:41,758 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:15:39" (1/1) ... [2024-10-23 21:15:41,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 21:15:41,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:15:41,789 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) [2024-10-23 21:15:41,791 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 [2024-10-23 21:15:41,837 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-23 21:15:41,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-23 21:15:41,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-23 21:15:41,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-23 21:15:41,902 INFO L238 CfgBuilder]: Building ICFG [2024-10-23 21:15:41,904 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-23 21:15:47,614 INFO L? ?]: Removed 738 outVars from TransFormulas that were not future-live. [2024-10-23 21:15:47,614 INFO L287 CfgBuilder]: Performing block encoding [2024-10-23 21:15:47,684 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-23 21:15:47,684 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-23 21:15:47,685 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:15:47 BoogieIcfgContainer [2024-10-23 21:15:47,685 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-23 21:15:47,687 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-23 21:15:47,687 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-23 21:15:47,690 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-23 21:15:47,691 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 09:15:38" (1/3) ... [2024-10-23 21:15:47,691 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7711a330 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:15:47, skipping insertion in model container [2024-10-23 21:15:47,692 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:15:39" (2/3) ... [2024-10-23 21:15:47,692 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7711a330 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:15:47, skipping insertion in model container [2024-10-23 21:15:47,692 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:15:47" (3/3) ... [2024-10-23 21:15:47,693 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label56.c [2024-10-23 21:15:47,710 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-23 21:15:47,710 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-23 21:15:47,804 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-23 21:15:47,810 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;@72baae21, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-23 21:15:47,810 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-23 21:15:47,819 INFO L276 IsEmpty]: Start isEmpty. Operand has 1036 states, 1034 states have (on average 1.877176015473888) internal successors, (1941), 1035 states have internal predecessors, (1941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:15:47,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-10-23 21:15:47,826 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:15:47,827 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] [2024-10-23 21:15:47,827 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:15:47,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:15:47,833 INFO L85 PathProgramCache]: Analyzing trace with hash -2051330157, now seen corresponding path program 1 times [2024-10-23 21:15:47,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:15:47,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898150827] [2024-10-23 21:15:47,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:15:47,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:15:47,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:15:48,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:15:48,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:15:48,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898150827] [2024-10-23 21:15:48,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898150827] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:15:48,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:15:48,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:15:48,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463499943] [2024-10-23 21:15:48,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:15:48,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-23 21:15:48,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:15:48,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-23 21:15:48,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 21:15:48,110 INFO L87 Difference]: Start difference. First operand has 1036 states, 1034 states have (on average 1.877176015473888) internal successors, (1941), 1035 states have internal predecessors, (1941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:15:48,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:15:48,216 INFO L93 Difference]: Finished difference Result 2071 states and 3881 transitions. [2024-10-23 21:15:48,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-23 21:15:48,219 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2024-10-23 21:15:48,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:15:48,245 INFO L225 Difference]: With dead ends: 2071 [2024-10-23 21:15:48,246 INFO L226 Difference]: Without dead ends: 1034 [2024-10-23 21:15:48,254 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 21:15:48,257 INFO L432 NwaCegarLoop]: 1876 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1876 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-23 21:15:48,258 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1876 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-23 21:15:48,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2024-10-23 21:15:48,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 1034. [2024-10-23 21:15:48,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1034 states, 1033 states have (on average 1.8160696999031947) internal successors, (1876), 1033 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:15:48,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1876 transitions. [2024-10-23 21:15:48,357 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1876 transitions. Word has length 52 [2024-10-23 21:15:48,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:15:48,357 INFO L471 AbstractCegarLoop]: Abstraction has 1034 states and 1876 transitions. [2024-10-23 21:15:48,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:15:48,358 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1876 transitions. [2024-10-23 21:15:48,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-10-23 21:15:48,359 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:15:48,359 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] [2024-10-23 21:15:48,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-23 21:15:48,360 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:15:48,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:15:48,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1432849024, now seen corresponding path program 1 times [2024-10-23 21:15:48,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:15:48,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701241195] [2024-10-23 21:15:48,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:15:48,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:15:48,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:15:48,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:15:48,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:15:48,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701241195] [2024-10-23 21:15:48,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701241195] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:15:48,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:15:48,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:15:48,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567078232] [2024-10-23 21:15:48,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:15:48,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:15:48,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:15:48,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:15:48,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:15:48,558 INFO L87 Difference]: Start difference. First operand 1034 states and 1876 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:15:52,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:15:52,272 INFO L93 Difference]: Finished difference Result 2905 states and 5325 transitions. [2024-10-23 21:15:52,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:15:52,272 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2024-10-23 21:15:52,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:15:52,283 INFO L225 Difference]: With dead ends: 2905 [2024-10-23 21:15:52,283 INFO L226 Difference]: Without dead ends: 1872 [2024-10-23 21:15:52,285 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 [2024-10-23 21:15:52,286 INFO L432 NwaCegarLoop]: 939 mSDtfsCounter, 836 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 2446 mSolverCounterSat, 798 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 836 SdHoareTripleChecker+Valid, 1090 SdHoareTripleChecker+Invalid, 3244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 798 IncrementalHoareTripleChecker+Valid, 2446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-10-23 21:15:52,286 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [836 Valid, 1090 Invalid, 3244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [798 Valid, 2446 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-10-23 21:15:52,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1872 states. [2024-10-23 21:15:52,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1872 to 1858. [2024-10-23 21:15:52,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1858 states, 1857 states have (on average 1.5444264943457189) internal successors, (2868), 1857 states have internal predecessors, (2868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:15:52,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1858 states to 1858 states and 2868 transitions. [2024-10-23 21:15:52,325 INFO L78 Accepts]: Start accepts. Automaton has 1858 states and 2868 transitions. Word has length 52 [2024-10-23 21:15:52,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:15:52,326 INFO L471 AbstractCegarLoop]: Abstraction has 1858 states and 2868 transitions. [2024-10-23 21:15:52,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:15:52,326 INFO L276 IsEmpty]: Start isEmpty. Operand 1858 states and 2868 transitions. [2024-10-23 21:15:52,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-10-23 21:15:52,329 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:15:52,330 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:15:52,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-23 21:15:52,330 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:15:52,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:15:52,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1365216724, now seen corresponding path program 1 times [2024-10-23 21:15:52,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:15:52,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377058368] [2024-10-23 21:15:52,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:15:52,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:15:52,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:15:52,613 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:15:52,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:15:52,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377058368] [2024-10-23 21:15:52,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377058368] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:15:52,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:15:52,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:15:52,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928903987] [2024-10-23 21:15:52,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:15:52,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:15:52,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:15:52,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:15:52,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:15:52,619 INFO L87 Difference]: Start difference. First operand 1858 states and 2868 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:15:56,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:15:56,185 INFO L93 Difference]: Finished difference Result 5316 states and 8228 transitions. [2024-10-23 21:15:56,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:15:56,186 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 0 states have call successors, (0), 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 124 [2024-10-23 21:15:56,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:15:56,197 INFO L225 Difference]: With dead ends: 5316 [2024-10-23 21:15:56,198 INFO L226 Difference]: Without dead ends: 3459 [2024-10-23 21:15:56,200 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 [2024-10-23 21:15:56,201 INFO L432 NwaCegarLoop]: 1037 mSDtfsCounter, 826 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 2403 mSolverCounterSat, 877 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 1190 SdHoareTripleChecker+Invalid, 3280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 877 IncrementalHoareTripleChecker+Valid, 2403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-10-23 21:15:56,202 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [826 Valid, 1190 Invalid, 3280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [877 Valid, 2403 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-10-23 21:15:56,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3459 states. [2024-10-23 21:15:56,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3459 to 3458. [2024-10-23 21:15:56,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3458 states, 3457 states have (on average 1.380676887474689) internal successors, (4773), 3457 states have internal predecessors, (4773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:15:56,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3458 states to 3458 states and 4773 transitions. [2024-10-23 21:15:56,291 INFO L78 Accepts]: Start accepts. Automaton has 3458 states and 4773 transitions. Word has length 124 [2024-10-23 21:15:56,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:15:56,293 INFO L471 AbstractCegarLoop]: Abstraction has 3458 states and 4773 transitions. [2024-10-23 21:15:56,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:15:56,296 INFO L276 IsEmpty]: Start isEmpty. Operand 3458 states and 4773 transitions. [2024-10-23 21:15:56,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-10-23 21:15:56,301 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:15:56,301 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:15:56,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-23 21:15:56,301 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:15:56,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:15:56,302 INFO L85 PathProgramCache]: Analyzing trace with hash -2057274179, now seen corresponding path program 1 times [2024-10-23 21:15:56,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:15:56,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370251551] [2024-10-23 21:15:56,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:15:56,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:15:56,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:15:56,747 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:15:56,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:15:56,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370251551] [2024-10-23 21:15:56,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370251551] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:15:56,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:15:56,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:15:56,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28638677] [2024-10-23 21:15:56,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:15:56,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:15:56,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:15:56,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:15:56,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:15:56,753 INFO L87 Difference]: Start difference. First operand 3458 states and 4773 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:16:01,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:16:01,398 INFO L93 Difference]: Finished difference Result 10869 states and 14767 transitions. [2024-10-23 21:16:01,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:16:01,398 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 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 138 [2024-10-23 21:16:01,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:16:01,420 INFO L225 Difference]: With dead ends: 10869 [2024-10-23 21:16:01,421 INFO L226 Difference]: Without dead ends: 7412 [2024-10-23 21:16:01,425 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-23 21:16:01,426 INFO L432 NwaCegarLoop]: 707 mSDtfsCounter, 2581 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 4118 mSolverCounterSat, 831 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2581 SdHoareTripleChecker+Valid, 1001 SdHoareTripleChecker+Invalid, 4949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 831 IncrementalHoareTripleChecker+Valid, 4118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-10-23 21:16:01,427 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2581 Valid, 1001 Invalid, 4949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [831 Valid, 4118 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-10-23 21:16:01,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7412 states. [2024-10-23 21:16:01,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7412 to 7411. [2024-10-23 21:16:01,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7411 states, 7410 states have (on average 1.269905533063428) internal successors, (9410), 7410 states have internal predecessors, (9410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:16:01,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7411 states to 7411 states and 9410 transitions. [2024-10-23 21:16:01,587 INFO L78 Accepts]: Start accepts. Automaton has 7411 states and 9410 transitions. Word has length 138 [2024-10-23 21:16:01,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:16:01,588 INFO L471 AbstractCegarLoop]: Abstraction has 7411 states and 9410 transitions. [2024-10-23 21:16:01,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:16:01,589 INFO L276 IsEmpty]: Start isEmpty. Operand 7411 states and 9410 transitions. [2024-10-23 21:16:01,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2024-10-23 21:16:01,598 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:16:01,598 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, 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] [2024-10-23 21:16:01,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-23 21:16:01,598 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:16:01,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:16:01,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1848620252, now seen corresponding path program 1 times [2024-10-23 21:16:01,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:16:01,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821462114] [2024-10-23 21:16:01,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:16:01,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:16:01,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:16:01,900 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-23 21:16:01,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:16:01,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821462114] [2024-10-23 21:16:01,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821462114] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:16:01,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:16:01,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:16:01,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124722376] [2024-10-23 21:16:01,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:16:01,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:16:01,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:16:01,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:16:01,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:16:01,905 INFO L87 Difference]: Start difference. First operand 7411 states and 9410 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 2 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:16:05,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:16:05,330 INFO L93 Difference]: Finished difference Result 20356 states and 26251 transitions. [2024-10-23 21:16:05,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:16:05,331 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 2 states have internal predecessors, (150), 0 states have call successors, (0), 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 219 [2024-10-23 21:16:05,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:16:05,366 INFO L225 Difference]: With dead ends: 20356 [2024-10-23 21:16:05,366 INFO L226 Difference]: Without dead ends: 13733 [2024-10-23 21:16:05,373 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 [2024-10-23 21:16:05,374 INFO L432 NwaCegarLoop]: 849 mSDtfsCounter, 889 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2577 mSolverCounterSat, 747 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 889 SdHoareTripleChecker+Valid, 978 SdHoareTripleChecker+Invalid, 3324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 747 IncrementalHoareTripleChecker+Valid, 2577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-10-23 21:16:05,374 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [889 Valid, 978 Invalid, 3324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [747 Valid, 2577 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-10-23 21:16:05,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13733 states. [2024-10-23 21:16:05,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13733 to 12936. [2024-10-23 21:16:05,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12936 states, 12935 states have (on average 1.2152299961345188) internal successors, (15719), 12935 states have internal predecessors, (15719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:16:05,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12936 states to 12936 states and 15719 transitions. [2024-10-23 21:16:05,618 INFO L78 Accepts]: Start accepts. Automaton has 12936 states and 15719 transitions. Word has length 219 [2024-10-23 21:16:05,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:16:05,619 INFO L471 AbstractCegarLoop]: Abstraction has 12936 states and 15719 transitions. [2024-10-23 21:16:05,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 2 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:16:05,620 INFO L276 IsEmpty]: Start isEmpty. Operand 12936 states and 15719 transitions. [2024-10-23 21:16:05,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2024-10-23 21:16:05,624 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:16:05,625 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-23 21:16:05,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-23 21:16:05,625 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:16:05,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:16:05,626 INFO L85 PathProgramCache]: Analyzing trace with hash 48631340, now seen corresponding path program 1 times [2024-10-23 21:16:05,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:16:05,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880155034] [2024-10-23 21:16:05,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:16:05,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:16:05,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:16:05,848 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 196 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:16:05,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:16:05,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880155034] [2024-10-23 21:16:05,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880155034] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:16:05,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:16:05,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:16:05,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681379189] [2024-10-23 21:16:05,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:16:05,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:16:05,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:16:05,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:16:05,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:16:05,852 INFO L87 Difference]: Start difference. First operand 12936 states and 15719 transitions. Second operand has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:16:08,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:16:08,845 INFO L93 Difference]: Finished difference Result 31391 states and 39118 transitions. [2024-10-23 21:16:08,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:16:08,846 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 251 [2024-10-23 21:16:08,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:16:08,896 INFO L225 Difference]: With dead ends: 31391 [2024-10-23 21:16:08,896 INFO L226 Difference]: Without dead ends: 19243 [2024-10-23 21:16:08,912 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 [2024-10-23 21:16:08,913 INFO L432 NwaCegarLoop]: 807 mSDtfsCounter, 857 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 2382 mSolverCounterSat, 914 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 924 SdHoareTripleChecker+Invalid, 3296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 914 IncrementalHoareTripleChecker+Valid, 2382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-10-23 21:16:08,913 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [857 Valid, 924 Invalid, 3296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [914 Valid, 2382 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-10-23 21:16:08,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19243 states. [2024-10-23 21:16:09,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19243 to 18446. [2024-10-23 21:16:09,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18446 states, 18445 states have (on average 1.20243968555164) internal successors, (22179), 18445 states have internal predecessors, (22179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:16:09,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18446 states to 18446 states and 22179 transitions. [2024-10-23 21:16:09,188 INFO L78 Accepts]: Start accepts. Automaton has 18446 states and 22179 transitions. Word has length 251 [2024-10-23 21:16:09,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:16:09,190 INFO L471 AbstractCegarLoop]: Abstraction has 18446 states and 22179 transitions. [2024-10-23 21:16:09,191 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:16:09,191 INFO L276 IsEmpty]: Start isEmpty. Operand 18446 states and 22179 transitions. [2024-10-23 21:16:09,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2024-10-23 21:16:09,198 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:16:09,198 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:16:09,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-23 21:16:09,198 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:16:09,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:16:09,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1311924577, now seen corresponding path program 1 times [2024-10-23 21:16:09,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:16:09,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803881335] [2024-10-23 21:16:09,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:16:09,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:16:09,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:16:09,602 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-10-23 21:16:09,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:16:09,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803881335] [2024-10-23 21:16:09,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803881335] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:16:09,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:16:09,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:16:09,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593100761] [2024-10-23 21:16:09,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:16:09,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:16:09,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:16:09,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:16:09,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:16:09,606 INFO L87 Difference]: Start difference. First operand 18446 states and 22179 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:16:13,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:16:13,424 INFO L93 Difference]: Finished difference Result 52771 states and 63783 transitions. [2024-10-23 21:16:13,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:16:13,424 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 340 [2024-10-23 21:16:13,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:16:13,493 INFO L225 Difference]: With dead ends: 52771 [2024-10-23 21:16:13,493 INFO L226 Difference]: Without dead ends: 35113 [2024-10-23 21:16:13,517 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 [2024-10-23 21:16:13,521 INFO L432 NwaCegarLoop]: 1698 mSDtfsCounter, 920 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 3129 mSolverCounterSat, 603 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 920 SdHoareTripleChecker+Valid, 1816 SdHoareTripleChecker+Invalid, 3732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 603 IncrementalHoareTripleChecker+Valid, 3129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-10-23 21:16:13,521 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [920 Valid, 1816 Invalid, 3732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [603 Valid, 3129 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-10-23 21:16:13,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35113 states. [2024-10-23 21:16:13,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35113 to 34273. [2024-10-23 21:16:13,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34273 states, 34272 states have (on average 1.1858951914098972) internal successors, (40643), 34272 states have internal predecessors, (40643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:16:13,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34273 states to 34273 states and 40643 transitions. [2024-10-23 21:16:13,931 INFO L78 Accepts]: Start accepts. Automaton has 34273 states and 40643 transitions. Word has length 340 [2024-10-23 21:16:13,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:16:13,932 INFO L471 AbstractCegarLoop]: Abstraction has 34273 states and 40643 transitions. [2024-10-23 21:16:13,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:16:13,933 INFO L276 IsEmpty]: Start isEmpty. Operand 34273 states and 40643 transitions. [2024-10-23 21:16:13,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2024-10-23 21:16:13,939 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:16:13,939 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:16:13,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-23 21:16:13,939 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:16:13,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:16:13,940 INFO L85 PathProgramCache]: Analyzing trace with hash -223148571, now seen corresponding path program 1 times [2024-10-23 21:16:13,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:16:13,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521749781] [2024-10-23 21:16:13,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:16:13,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:16:13,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:16:14,240 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 377 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-10-23 21:16:14,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:16:14,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521749781] [2024-10-23 21:16:14,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521749781] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:16:14,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:16:14,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:16:14,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547831152] [2024-10-23 21:16:14,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:16:14,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:16:14,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:16:14,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:16:14,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:16:14,244 INFO L87 Difference]: Start difference. First operand 34273 states and 40643 transitions. Second operand has 4 states, 4 states have (on average 72.5) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:16:20,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:16:20,536 INFO L93 Difference]: Finished difference Result 108143 states and 129354 transitions. [2024-10-23 21:16:20,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:16:20,537 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 72.5) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 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 340 [2024-10-23 21:16:20,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:16:20,653 INFO L225 Difference]: With dead ends: 108143 [2024-10-23 21:16:20,653 INFO L226 Difference]: Without dead ends: 74658 [2024-10-23 21:16:20,696 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 [2024-10-23 21:16:20,698 INFO L432 NwaCegarLoop]: 594 mSDtfsCounter, 1727 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 6797 mSolverCounterSat, 1085 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1727 SdHoareTripleChecker+Valid, 843 SdHoareTripleChecker+Invalid, 7882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1085 IncrementalHoareTripleChecker+Valid, 6797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2024-10-23 21:16:20,698 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1727 Valid, 843 Invalid, 7882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1085 Valid, 6797 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2024-10-23 21:16:20,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74658 states. [2024-10-23 21:16:21,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74658 to 74497. [2024-10-23 21:16:21,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74497 states, 74496 states have (on average 1.1708950816151202) internal successors, (87227), 74496 states have internal predecessors, (87227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:16:22,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74497 states to 74497 states and 87227 transitions. [2024-10-23 21:16:22,181 INFO L78 Accepts]: Start accepts. Automaton has 74497 states and 87227 transitions. Word has length 340 [2024-10-23 21:16:22,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:16:22,181 INFO L471 AbstractCegarLoop]: Abstraction has 74497 states and 87227 transitions. [2024-10-23 21:16:22,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.5) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:16:22,181 INFO L276 IsEmpty]: Start isEmpty. Operand 74497 states and 87227 transitions. [2024-10-23 21:16:22,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2024-10-23 21:16:22,191 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:16:22,191 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:16:22,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-23 21:16:22,192 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:16:22,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:16:22,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1061971512, now seen corresponding path program 1 times [2024-10-23 21:16:22,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:16:22,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375548829] [2024-10-23 21:16:22,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:16:22,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:16:22,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:16:22,748 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 308 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2024-10-23 21:16:22,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:16:22,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375548829] [2024-10-23 21:16:22,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375548829] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:16:22,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:16:22,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:16:22,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695338141] [2024-10-23 21:16:22,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:16:22,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:16:22,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:16:22,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:16:22,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:16:22,751 INFO L87 Difference]: Start difference. First operand 74497 states and 87227 transitions. Second operand has 3 states, 3 states have (on average 78.0) internal successors, (234), 2 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:16:25,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:16:25,961 INFO L93 Difference]: Finished difference Result 160035 states and 187017 transitions. [2024-10-23 21:16:25,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:16:25,962 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 2 states have internal predecessors, (234), 0 states have call successors, (0), 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 378 [2024-10-23 21:16:25,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:16:26,093 INFO L225 Difference]: With dead ends: 160035 [2024-10-23 21:16:26,094 INFO L226 Difference]: Without dead ends: 86326 [2024-10-23 21:16:26,160 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 [2024-10-23 21:16:26,161 INFO L432 NwaCegarLoop]: 1019 mSDtfsCounter, 730 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 2707 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 1200 SdHoareTripleChecker+Invalid, 2887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 2707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-10-23 21:16:26,161 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [730 Valid, 1200 Invalid, 2887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 2707 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-10-23 21:16:26,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86326 states. [2024-10-23 21:16:27,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86326 to 86315. [2024-10-23 21:16:27,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86315 states, 86314 states have (on average 1.1568922770350116) internal successors, (99856), 86314 states have internal predecessors, (99856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:16:27,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86315 states to 86315 states and 99856 transitions. [2024-10-23 21:16:27,487 INFO L78 Accepts]: Start accepts. Automaton has 86315 states and 99856 transitions. Word has length 378 [2024-10-23 21:16:27,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:16:27,487 INFO L471 AbstractCegarLoop]: Abstraction has 86315 states and 99856 transitions. [2024-10-23 21:16:27,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 2 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:16:27,488 INFO L276 IsEmpty]: Start isEmpty. Operand 86315 states and 99856 transitions. [2024-10-23 21:16:27,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2024-10-23 21:16:27,498 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:16:27,499 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-23 21:16:27,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-23 21:16:27,499 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:16:27,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:16:27,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1604128590, now seen corresponding path program 1 times [2024-10-23 21:16:27,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:16:27,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003624394] [2024-10-23 21:16:27,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:16:27,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:16:27,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:16:29,354 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 324 proven. 113 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-10-23 21:16:29,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:16:29,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003624394] [2024-10-23 21:16:29,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003624394] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:16:29,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927262962] [2024-10-23 21:16:29,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:16:29,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:16:29,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:16:29,358 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) [2024-10-23 21:16:29,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-23 21:16:29,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:16:29,537 INFO L255 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-23 21:16:29,551 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:16:29,672 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2024-10-23 21:16:29,672 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 21:16:29,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927262962] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:16:29,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 21:16:29,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2024-10-23 21:16:29,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730643248] [2024-10-23 21:16:29,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:16:29,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:16:29,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:16:29,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:16:29,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-23 21:16:29,675 INFO L87 Difference]: Start difference. First operand 86315 states and 99856 transitions. Second operand has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:16:32,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:16:32,625 INFO L93 Difference]: Finished difference Result 174966 states and 202959 transitions. [2024-10-23 21:16:32,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:16:32,626 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 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 407 [2024-10-23 21:16:32,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:16:32,912 INFO L225 Difference]: With dead ends: 174966 [2024-10-23 21:16:32,912 INFO L226 Difference]: Without dead ends: 101257 [2024-10-23 21:16:32,946 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 406 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-23 21:16:32,947 INFO L432 NwaCegarLoop]: 1724 mSDtfsCounter, 873 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2392 mSolverCounterSat, 464 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 1853 SdHoareTripleChecker+Invalid, 2856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 464 IncrementalHoareTripleChecker+Valid, 2392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-10-23 21:16:32,948 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [873 Valid, 1853 Invalid, 2856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [464 Valid, 2392 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-10-23 21:16:33,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101257 states. [2024-10-23 21:16:34,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101257 to 91019. [2024-10-23 21:16:34,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91019 states, 91018 states have (on average 1.1477070469577446) internal successors, (104462), 91018 states have internal predecessors, (104462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:16:34,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91019 states to 91019 states and 104462 transitions. [2024-10-23 21:16:34,266 INFO L78 Accepts]: Start accepts. Automaton has 91019 states and 104462 transitions. Word has length 407 [2024-10-23 21:16:34,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:16:34,267 INFO L471 AbstractCegarLoop]: Abstraction has 91019 states and 104462 transitions. [2024-10-23 21:16:34,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:16:34,267 INFO L276 IsEmpty]: Start isEmpty. Operand 91019 states and 104462 transitions. [2024-10-23 21:16:34,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2024-10-23 21:16:34,280 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:16:34,281 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:16:34,300 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-23 21:16:34,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-23 21:16:34,486 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:16:34,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:16:34,487 INFO L85 PathProgramCache]: Analyzing trace with hash 2125300146, now seen corresponding path program 1 times [2024-10-23 21:16:34,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:16:34,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866528650] [2024-10-23 21:16:34,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:16:34,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:16:34,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:16:34,922 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2024-10-23 21:16:34,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:16:34,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866528650] [2024-10-23 21:16:34,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866528650] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:16:34,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:16:34,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:16:34,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098823949] [2024-10-23 21:16:34,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:16:34,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:16:34,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:16:34,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:16:34,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:16:34,925 INFO L87 Difference]: Start difference. First operand 91019 states and 104462 transitions. Second operand has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:16:39,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:16:39,043 INFO L93 Difference]: Finished difference Result 210388 states and 244215 transitions. [2024-10-23 21:16:39,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:16:39,043 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 0 states have call successors, (0), 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 456 [2024-10-23 21:16:39,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:16:39,190 INFO L225 Difference]: With dead ends: 210388 [2024-10-23 21:16:39,191 INFO L226 Difference]: Without dead ends: 120157 [2024-10-23 21:16:39,246 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 [2024-10-23 21:16:39,247 INFO L432 NwaCegarLoop]: 858 mSDtfsCounter, 938 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 2433 mSolverCounterSat, 932 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 938 SdHoareTripleChecker+Valid, 944 SdHoareTripleChecker+Invalid, 3365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 932 IncrementalHoareTripleChecker+Valid, 2433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-10-23 21:16:39,247 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [938 Valid, 944 Invalid, 3365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [932 Valid, 2433 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-10-23 21:16:39,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120157 states. [2024-10-23 21:16:40,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120157 to 117773. [2024-10-23 21:16:40,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117773 states, 117772 states have (on average 1.1534575281051522) internal successors, (135845), 117772 states have internal predecessors, (135845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:16:40,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117773 states to 117773 states and 135845 transitions. [2024-10-23 21:16:40,732 INFO L78 Accepts]: Start accepts. Automaton has 117773 states and 135845 transitions. Word has length 456 [2024-10-23 21:16:40,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:16:40,732 INFO L471 AbstractCegarLoop]: Abstraction has 117773 states and 135845 transitions. [2024-10-23 21:16:40,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:16:40,733 INFO L276 IsEmpty]: Start isEmpty. Operand 117773 states and 135845 transitions. [2024-10-23 21:16:40,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2024-10-23 21:16:40,748 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:16:40,749 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:16:40,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-23 21:16:40,749 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:16:40,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:16:40,750 INFO L85 PathProgramCache]: Analyzing trace with hash -196352799, now seen corresponding path program 1 times [2024-10-23 21:16:40,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:16:40,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998835104] [2024-10-23 21:16:40,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:16:40,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:16:40,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:16:42,658 INFO L134 CoverageAnalysis]: Checked inductivity of 503 backedges. 342 proven. 110 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-10-23 21:16:42,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:16:42,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998835104] [2024-10-23 21:16:42,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998835104] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:16:42,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370512591] [2024-10-23 21:16:42,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:16:42,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:16:42,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:16:42,662 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) [2024-10-23 21:16:42,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-23 21:16:42,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:16:42,824 INFO L255 TraceCheckSpWp]: Trace formula consists of 618 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-23 21:16:42,830 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:16:43,035 INFO L134 CoverageAnalysis]: Checked inductivity of 503 backedges. 390 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-10-23 21:16:43,035 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 21:16:43,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370512591] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:16:43,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 21:16:43,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-10-23 21:16:43,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015215627] [2024-10-23 21:16:43,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:16:43,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:16:43,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:16:43,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:16:43,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-23 21:16:43,038 INFO L87 Difference]: Start difference. First operand 117773 states and 135845 transitions. Second operand has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:16:46,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:16:46,782 INFO L93 Difference]: Finished difference Result 230788 states and 269472 transitions. [2024-10-23 21:16:46,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:16:46,782 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 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 482 [2024-10-23 21:16:46,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:16:46,926 INFO L225 Difference]: With dead ends: 230788 [2024-10-23 21:16:46,926 INFO L226 Difference]: Without dead ends: 129552 [2024-10-23 21:16:46,987 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 481 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-23 21:16:46,988 INFO L432 NwaCegarLoop]: 391 mSDtfsCounter, 1135 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 2267 mSolverCounterSat, 1138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1135 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 3405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1138 IncrementalHoareTripleChecker+Valid, 2267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-10-23 21:16:46,988 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1135 Valid, 408 Invalid, 3405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1138 Valid, 2267 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-10-23 21:16:47,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129552 states. [2024-10-23 21:16:48,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129552 to 129550. [2024-10-23 21:16:48,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129550 states, 129549 states have (on average 1.1497348493620174) internal successors, (148947), 129549 states have internal predecessors, (148947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:16:48,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129550 states to 129550 states and 148947 transitions. [2024-10-23 21:16:48,705 INFO L78 Accepts]: Start accepts. Automaton has 129550 states and 148947 transitions. Word has length 482 [2024-10-23 21:16:48,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:16:48,706 INFO L471 AbstractCegarLoop]: Abstraction has 129550 states and 148947 transitions. [2024-10-23 21:16:48,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:16:48,707 INFO L276 IsEmpty]: Start isEmpty. Operand 129550 states and 148947 transitions. [2024-10-23 21:16:48,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 498 [2024-10-23 21:16:48,724 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:16:48,724 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-23 21:16:48,743 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-23 21:16:48,925 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,SelfDestructingSolverStorable11 [2024-10-23 21:16:48,926 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:16:48,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:16:48,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1775767767, now seen corresponding path program 1 times [2024-10-23 21:16:48,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:16:48,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881524315] [2024-10-23 21:16:48,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:16:48,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:16:49,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:16:49,403 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 532 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2024-10-23 21:16:49,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:16:49,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881524315] [2024-10-23 21:16:49,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881524315] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:16:49,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:16:49,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:16:49,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893819985] [2024-10-23 21:16:49,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:16:49,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:16:49,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:16:49,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:16:49,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:16:49,407 INFO L87 Difference]: Start difference. First operand 129550 states and 148947 transitions. Second operand has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)