./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.miim.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.miim.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-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 64bit --witnessprinter.graph.data.programhash 8c8574ead59a3d6c844f4988721fe479d7d5d492b1ea6dd2e875c5c9834b070c --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 17:41:33,986 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 17:41:34,052 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-18 17:41:34,063 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 17:41:34,063 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 17:41:34,078 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 17:41:34,079 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 17:41:34,080 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 17:41:34,080 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 17:41:34,082 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 17:41:34,082 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 17:41:34,082 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 17:41:34,083 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 17:41:34,083 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 17:41:34,083 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 17:41:34,084 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 17:41:34,085 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 17:41:34,085 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 17:41:34,085 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 17:41:34,085 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 17:41:34,086 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 17:41:34,086 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 17:41:34,086 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 17:41:34,087 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 17:41:34,087 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 17:41:34,087 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 17:41:34,087 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 17:41:34,087 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 17:41:34,088 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 17:41:34,088 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 17:41:34,088 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 17:41:34,088 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 17:41:34,089 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 17:41:34,089 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 17:41:34,089 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 17:41:34,089 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 17:41:34,090 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 17:41:34,090 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 17:41:34,090 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 17:41:34,090 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c8574ead59a3d6c844f4988721fe479d7d5d492b1ea6dd2e875c5c9834b070c [2024-11-18 17:41:34,328 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 17:41:34,348 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 17:41:34,350 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 17:41:34,352 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 17:41:34,352 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 17:41:34,354 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.miim.c [2024-11-18 17:41:35,632 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 17:41:35,829 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 17:41:35,830 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.miim.c [2024-11-18 17:41:35,842 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9bef4bbb0/51c2d9c981b84793b7c71b26793ee9ec/FLAG1ef802e1d [2024-11-18 17:41:36,210 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9bef4bbb0/51c2d9c981b84793b7c71b26793ee9ec [2024-11-18 17:41:36,212 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 17:41:36,213 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 17:41:36,214 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 17:41:36,217 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 17:41:36,222 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 17:41:36,222 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 05:41:36" (1/1) ... [2024-11-18 17:41:36,223 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@327fbaea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:41:36, skipping insertion in model container [2024-11-18 17:41:36,223 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 05:41:36" (1/1) ... [2024-11-18 17:41:36,270 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 17:41:36,446 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.miim.c[1244,1257] [2024-11-18 17:41:36,646 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 17:41:36,662 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 17:41:36,672 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.miim.c[1244,1257] [2024-11-18 17:41:36,747 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 17:41:36,809 INFO L204 MainTranslator]: Completed translation [2024-11-18 17:41:36,809 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:41:36 WrapperNode [2024-11-18 17:41:36,809 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 17:41:36,810 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 17:41:36,810 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 17:41:36,811 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 17:41:36,817 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:41:36" (1/1) ... [2024-11-18 17:41:36,875 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:41:36" (1/1) ... [2024-11-18 17:41:36,995 INFO L138 Inliner]: procedures = 17, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1718 [2024-11-18 17:41:36,996 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 17:41:36,996 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 17:41:36,996 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 17:41:36,996 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 17:41:37,006 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:41:36" (1/1) ... [2024-11-18 17:41:37,007 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:41:36" (1/1) ... [2024-11-18 17:41:37,027 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:41:36" (1/1) ... [2024-11-18 17:41:37,069 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 9 initializations are split as follows [2, 7]. The 0 writes are split as follows [0, 0]. [2024-11-18 17:41:37,073 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:41:36" (1/1) ... [2024-11-18 17:41:37,074 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:41:36" (1/1) ... [2024-11-18 17:41:37,120 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:41:36" (1/1) ... [2024-11-18 17:41:37,129 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:41:36" (1/1) ... [2024-11-18 17:41:37,152 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:41:36" (1/1) ... [2024-11-18 17:41:37,161 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:41:36" (1/1) ... [2024-11-18 17:41:37,186 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 17:41:37,188 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 17:41:37,188 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 17:41:37,188 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 17:41:37,189 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:41:36" (1/1) ... [2024-11-18 17:41:37,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 17:41:37,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 17:41:37,228 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 17:41:37,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 17:41:37,282 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 17:41:37,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 17:41:37,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-18 17:41:37,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 17:41:37,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 17:41:37,518 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 17:41:37,520 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 17:41:38,888 INFO L? ?]: Removed 833 outVars from TransFormulas that were not future-live. [2024-11-18 17:41:38,888 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 17:41:38,907 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 17:41:38,909 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 17:41:38,910 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:41:38 BoogieIcfgContainer [2024-11-18 17:41:38,910 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 17:41:38,912 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 17:41:38,913 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 17:41:38,915 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 17:41:38,915 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 05:41:36" (1/3) ... [2024-11-18 17:41:38,916 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39a33bef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 05:41:38, skipping insertion in model container [2024-11-18 17:41:38,916 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:41:36" (2/3) ... [2024-11-18 17:41:38,916 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39a33bef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 05:41:38, skipping insertion in model container [2024-11-18 17:41:38,916 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:41:38" (3/3) ... [2024-11-18 17:41:38,917 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.miim.c [2024-11-18 17:41:38,929 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 17:41:38,930 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 17:41:38,985 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 17:41:38,990 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;@5dc705fd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 17:41:38,990 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 17:41:38,994 INFO L276 IsEmpty]: Start isEmpty. Operand has 326 states, 324 states have (on average 1.4969135802469136) internal successors, (485), 325 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:41:39,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-18 17:41:39,001 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 17:41:39,002 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 17:41:39,002 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 17:41:39,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 17:41:39,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1540223333, now seen corresponding path program 1 times [2024-11-18 17:41:39,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 17:41:39,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877554675] [2024-11-18 17:41:39,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 17:41:39,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 17:41:39,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 17:41:39,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 17:41:39,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 17:41:39,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877554675] [2024-11-18 17:41:39,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877554675] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 17:41:39,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 17:41:39,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 17:41:39,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936404354] [2024-11-18 17:41:39,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 17:41:39,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 17:41:39,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 17:41:39,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 17:41:39,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 17:41:39,980 INFO L87 Difference]: Start difference. First operand has 326 states, 324 states have (on average 1.4969135802469136) internal successors, (485), 325 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:41:40,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 17:41:40,069 INFO L93 Difference]: Finished difference Result 551 states and 822 transitions. [2024-11-18 17:41:40,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 17:41:40,072 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2024-11-18 17:41:40,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 17:41:40,088 INFO L225 Difference]: With dead ends: 551 [2024-11-18 17:41:40,089 INFO L226 Difference]: Without dead ends: 323 [2024-11-18 17:41:40,094 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 17:41:40,096 INFO L432 NwaCegarLoop]: 475 mSDtfsCounter, 26 mSDsluCounter, 910 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 1385 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 17:41:40,099 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 1385 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 17:41:40,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2024-11-18 17:41:40,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2024-11-18 17:41:40,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 322 states have (on average 1.4906832298136645) internal successors, (480), 322 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:41:40,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 480 transitions. [2024-11-18 17:41:40,141 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 480 transitions. Word has length 75 [2024-11-18 17:41:40,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 17:41:40,142 INFO L471 AbstractCegarLoop]: Abstraction has 323 states and 480 transitions. [2024-11-18 17:41:40,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:41:40,142 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 480 transitions. [2024-11-18 17:41:40,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-18 17:41:40,144 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 17:41:40,144 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 17:41:40,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 17:41:40,145 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 17:41:40,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 17:41:40,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1396752011, now seen corresponding path program 1 times [2024-11-18 17:41:40,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 17:41:40,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166230124] [2024-11-18 17:41:40,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 17:41:40,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 17:41:40,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 17:41:40,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 17:41:40,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 17:41:40,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166230124] [2024-11-18 17:41:40,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166230124] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 17:41:40,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 17:41:40,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 17:41:40,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121787121] [2024-11-18 17:41:40,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 17:41:40,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 17:41:40,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 17:41:40,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 17:41:40,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 17:41:40,420 INFO L87 Difference]: Start difference. First operand 323 states and 480 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:41:40,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 17:41:40,441 INFO L93 Difference]: Finished difference Result 327 states and 484 transitions. [2024-11-18 17:41:40,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 17:41:40,442 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-11-18 17:41:40,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 17:41:40,444 INFO L225 Difference]: With dead ends: 327 [2024-11-18 17:41:40,444 INFO L226 Difference]: Without dead ends: 325 [2024-11-18 17:41:40,444 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 17:41:40,445 INFO L432 NwaCegarLoop]: 478 mSDtfsCounter, 0 mSDsluCounter, 950 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1428 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 17:41:40,446 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1428 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 17:41:40,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2024-11-18 17:41:40,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 325. [2024-11-18 17:41:40,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 324 states have (on average 1.4876543209876543) internal successors, (482), 324 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:41:40,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 482 transitions. [2024-11-18 17:41:40,457 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 482 transitions. Word has length 76 [2024-11-18 17:41:40,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 17:41:40,457 INFO L471 AbstractCegarLoop]: Abstraction has 325 states and 482 transitions. [2024-11-18 17:41:40,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:41:40,458 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 482 transitions. [2024-11-18 17:41:40,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-18 17:41:40,459 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 17:41:40,459 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 17:41:40,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 17:41:40,460 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 17:41:40,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 17:41:40,464 INFO L85 PathProgramCache]: Analyzing trace with hash 351334989, now seen corresponding path program 1 times [2024-11-18 17:41:40,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 17:41:40,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293530431] [2024-11-18 17:41:40,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 17:41:40,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 17:41:40,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 17:41:40,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 17:41:40,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 17:41:40,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293530431] [2024-11-18 17:41:40,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293530431] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 17:41:40,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 17:41:40,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 17:41:40,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205153642] [2024-11-18 17:41:40,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 17:41:40,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 17:41:40,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 17:41:40,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 17:41:40,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 17:41:40,641 INFO L87 Difference]: Start difference. First operand 325 states and 482 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:41:40,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 17:41:40,667 INFO L93 Difference]: Finished difference Result 554 states and 821 transitions. [2024-11-18 17:41:40,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 17:41:40,668 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2024-11-18 17:41:40,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 17:41:40,669 INFO L225 Difference]: With dead ends: 554 [2024-11-18 17:41:40,669 INFO L226 Difference]: Without dead ends: 327 [2024-11-18 17:41:40,671 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 17:41:40,673 INFO L432 NwaCegarLoop]: 478 mSDtfsCounter, 0 mSDsluCounter, 946 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1424 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 17:41:40,673 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1424 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 17:41:40,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2024-11-18 17:41:40,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 327. [2024-11-18 17:41:40,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 326 states have (on average 1.4846625766871167) internal successors, (484), 326 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:41:40,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 484 transitions. [2024-11-18 17:41:40,691 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 484 transitions. Word has length 77 [2024-11-18 17:41:40,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 17:41:40,692 INFO L471 AbstractCegarLoop]: Abstraction has 327 states and 484 transitions. [2024-11-18 17:41:40,692 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:41:40,692 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 484 transitions. [2024-11-18 17:41:40,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-18 17:41:40,694 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 17:41:40,696 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 17:41:40,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 17:41:40,696 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 17:41:40,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 17:41:40,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1203484580, now seen corresponding path program 1 times [2024-11-18 17:41:40,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 17:41:40,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511238816] [2024-11-18 17:41:40,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 17:41:40,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 17:41:40,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 17:41:41,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 17:41:41,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 17:41:41,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511238816] [2024-11-18 17:41:41,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511238816] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 17:41:41,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 17:41:41,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 17:41:41,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382755758] [2024-11-18 17:41:41,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 17:41:41,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 17:41:41,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 17:41:41,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 17:41:41,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-18 17:41:41,190 INFO L87 Difference]: Start difference. First operand 327 states and 484 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:41:41,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 17:41:41,304 INFO L93 Difference]: Finished difference Result 586 states and 866 transitions. [2024-11-18 17:41:41,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 17:41:41,305 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2024-11-18 17:41:41,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 17:41:41,306 INFO L225 Difference]: With dead ends: 586 [2024-11-18 17:41:41,308 INFO L226 Difference]: Without dead ends: 357 [2024-11-18 17:41:41,308 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-18 17:41:41,309 INFO L432 NwaCegarLoop]: 472 mSDtfsCounter, 494 mSDsluCounter, 2345 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 2817 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 17:41:41,309 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [494 Valid, 2817 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 17:41:41,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2024-11-18 17:41:41,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 356. [2024-11-18 17:41:41,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 355 states have (on average 1.4816901408450704) internal successors, (526), 355 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:41:41,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 526 transitions. [2024-11-18 17:41:41,315 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 526 transitions. Word has length 78 [2024-11-18 17:41:41,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 17:41:41,316 INFO L471 AbstractCegarLoop]: Abstraction has 356 states and 526 transitions. [2024-11-18 17:41:41,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:41:41,316 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 526 transitions. [2024-11-18 17:41:41,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-18 17:41:41,318 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 17:41:41,318 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 17:41:41,318 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 17:41:41,318 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 17:41:41,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 17:41:41,319 INFO L85 PathProgramCache]: Analyzing trace with hash 139770147, now seen corresponding path program 1 times [2024-11-18 17:41:41,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 17:41:41,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331459039] [2024-11-18 17:41:41,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 17:41:41,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 17:41:41,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 17:41:41,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 17:41:41,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 17:41:41,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331459039] [2024-11-18 17:41:41,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331459039] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 17:41:41,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 17:41:41,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 17:41:41,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850129715] [2024-11-18 17:41:41,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 17:41:41,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 17:41:41,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 17:41:41,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 17:41:41,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 17:41:41,527 INFO L87 Difference]: Start difference. First operand 356 states and 526 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:41:41,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 17:41:41,802 INFO L93 Difference]: Finished difference Result 620 states and 915 transitions. [2024-11-18 17:41:41,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 17:41:41,803 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2024-11-18 17:41:41,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 17:41:41,804 INFO L225 Difference]: With dead ends: 620 [2024-11-18 17:41:41,804 INFO L226 Difference]: Without dead ends: 362 [2024-11-18 17:41:41,805 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-18 17:41:41,806 INFO L432 NwaCegarLoop]: 468 mSDtfsCounter, 443 mSDsluCounter, 1219 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 1687 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 17:41:41,808 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 1687 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 17:41:41,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2024-11-18 17:41:41,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 362. [2024-11-18 17:41:41,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 361 states have (on average 1.479224376731302) internal successors, (534), 361 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:41:41,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 534 transitions. [2024-11-18 17:41:41,813 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 534 transitions. Word has length 79 [2024-11-18 17:41:41,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 17:41:41,814 INFO L471 AbstractCegarLoop]: Abstraction has 362 states and 534 transitions. [2024-11-18 17:41:41,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:41:41,815 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 534 transitions. [2024-11-18 17:41:41,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-18 17:41:41,816 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 17:41:41,819 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 17:41:41,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 17:41:41,819 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 17:41:41,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 17:41:41,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1027336943, now seen corresponding path program 1 times [2024-11-18 17:41:41,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 17:41:41,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479815174] [2024-11-18 17:41:41,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 17:41:41,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 17:41:41,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 17:41:42,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 17:41:42,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 17:41:42,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479815174] [2024-11-18 17:41:42,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479815174] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 17:41:42,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 17:41:42,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 17:41:42,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807040112] [2024-11-18 17:41:42,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 17:41:42,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 17:41:42,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 17:41:42,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 17:41:42,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 17:41:42,139 INFO L87 Difference]: Start difference. First operand 362 states and 534 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:41:42,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 17:41:42,178 INFO L93 Difference]: Finished difference Result 626 states and 922 transitions. [2024-11-18 17:41:42,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 17:41:42,179 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2024-11-18 17:41:42,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 17:41:42,180 INFO L225 Difference]: With dead ends: 626 [2024-11-18 17:41:42,180 INFO L226 Difference]: Without dead ends: 368 [2024-11-18 17:41:42,181 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-18 17:41:42,182 INFO L432 NwaCegarLoop]: 475 mSDtfsCounter, 417 mSDsluCounter, 943 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 1418 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 17:41:42,182 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [417 Valid, 1418 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 17:41:42,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2024-11-18 17:41:42,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 368. [2024-11-18 17:41:42,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 367 states have (on average 1.4713896457765667) internal successors, (540), 367 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:41:42,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 540 transitions. [2024-11-18 17:41:42,190 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 540 transitions. Word has length 79 [2024-11-18 17:41:42,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 17:41:42,193 INFO L471 AbstractCegarLoop]: Abstraction has 368 states and 540 transitions. [2024-11-18 17:41:42,193 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:41:42,193 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 540 transitions. [2024-11-18 17:41:42,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-18 17:41:42,194 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 17:41:42,194 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 17:41:42,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 17:41:42,194 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 17:41:42,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 17:41:42,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1702090248, now seen corresponding path program 1 times [2024-11-18 17:41:42,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 17:41:42,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354984193] [2024-11-18 17:41:42,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 17:41:42,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 17:41:42,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 17:41:42,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 17:41:42,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 17:41:42,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354984193] [2024-11-18 17:41:42,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354984193] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 17:41:42,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 17:41:42,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 17:41:42,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238429965] [2024-11-18 17:41:42,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 17:41:42,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 17:41:42,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 17:41:42,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 17:41:42,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 17:41:42,531 INFO L87 Difference]: Start difference. First operand 368 states and 540 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:41:43,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 17:41:43,121 INFO L93 Difference]: Finished difference Result 747 states and 1091 transitions. [2024-11-18 17:41:43,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 17:41:43,121 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2024-11-18 17:41:43,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 17:41:43,123 INFO L225 Difference]: With dead ends: 747 [2024-11-18 17:41:43,123 INFO L226 Difference]: Without dead ends: 483 [2024-11-18 17:41:43,123 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-18 17:41:43,124 INFO L432 NwaCegarLoop]: 285 mSDtfsCounter, 743 mSDsluCounter, 1138 mSDsCounter, 0 mSdLazyCounter, 977 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 743 SdHoareTripleChecker+Valid, 1423 SdHoareTripleChecker+Invalid, 979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 977 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 17:41:43,124 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [743 Valid, 1423 Invalid, 979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 977 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 17:41:43,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2024-11-18 17:41:43,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 389. [2024-11-18 17:41:43,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 1.4690721649484537) internal successors, (570), 388 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:41:43,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 570 transitions. [2024-11-18 17:41:43,132 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 570 transitions. Word has length 80 [2024-11-18 17:41:43,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 17:41:43,133 INFO L471 AbstractCegarLoop]: Abstraction has 389 states and 570 transitions. [2024-11-18 17:41:43,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:41:43,133 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 570 transitions. [2024-11-18 17:41:43,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-18 17:41:43,134 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 17:41:43,134 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 17:41:43,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 17:41:43,135 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 17:41:43,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 17:41:43,135 INFO L85 PathProgramCache]: Analyzing trace with hash -445892214, now seen corresponding path program 1 times [2024-11-18 17:41:43,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 17:41:43,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336130928] [2024-11-18 17:41:43,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 17:41:43,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 17:41:43,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 17:41:43,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 17:41:43,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 17:41:43,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336130928] [2024-11-18 17:41:43,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336130928] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 17:41:43,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 17:41:43,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-18 17:41:43,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466813719] [2024-11-18 17:41:43,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 17:41:43,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 17:41:43,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 17:41:43,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 17:41:43,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-18 17:41:43,438 INFO L87 Difference]: Start difference. First operand 389 states and 570 transitions. Second operand has 9 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:41:44,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 17:41:44,210 INFO L93 Difference]: Finished difference Result 862 states and 1260 transitions. [2024-11-18 17:41:44,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 17:41:44,210 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2024-11-18 17:41:44,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 17:41:44,212 INFO L225 Difference]: With dead ends: 862 [2024-11-18 17:41:44,212 INFO L226 Difference]: Without dead ends: 592 [2024-11-18 17:41:44,213 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-11-18 17:41:44,214 INFO L432 NwaCegarLoop]: 281 mSDtfsCounter, 1065 mSDsluCounter, 1676 mSDsCounter, 0 mSdLazyCounter, 1403 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1065 SdHoareTripleChecker+Valid, 1957 SdHoareTripleChecker+Invalid, 1405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 17:41:44,215 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1065 Valid, 1957 Invalid, 1405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1403 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 17:41:44,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2024-11-18 17:41:44,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 390. [2024-11-18 17:41:44,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 1.4652956298200515) internal successors, (570), 389 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:41:44,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 570 transitions. [2024-11-18 17:41:44,225 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 570 transitions. Word has length 81 [2024-11-18 17:41:44,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 17:41:44,225 INFO L471 AbstractCegarLoop]: Abstraction has 390 states and 570 transitions. [2024-11-18 17:41:44,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:41:44,225 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 570 transitions. [2024-11-18 17:41:44,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-18 17:41:44,227 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 17:41:44,227 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 17:41:44,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 17:41:44,229 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 17:41:44,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 17:41:44,229 INFO L85 PathProgramCache]: Analyzing trace with hash 475770383, now seen corresponding path program 1 times [2024-11-18 17:41:44,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 17:41:44,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515150496] [2024-11-18 17:41:44,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 17:41:44,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 17:41:44,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 17:41:44,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 17:41:44,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 17:41:44,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515150496] [2024-11-18 17:41:44,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515150496] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 17:41:44,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 17:41:44,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 17:41:44,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963688744] [2024-11-18 17:41:44,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 17:41:44,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 17:41:44,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 17:41:44,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 17:41:44,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 17:41:44,449 INFO L87 Difference]: Start difference. First operand 390 states and 570 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:41:44,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 17:41:44,553 INFO L93 Difference]: Finished difference Result 712 states and 1032 transitions. [2024-11-18 17:41:44,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 17:41:44,554 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2024-11-18 17:41:44,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 17:41:44,558 INFO L225 Difference]: With dead ends: 712 [2024-11-18 17:41:44,558 INFO L226 Difference]: Without dead ends: 437 [2024-11-18 17:41:44,558 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-18 17:41:44,559 INFO L432 NwaCegarLoop]: 464 mSDtfsCounter, 595 mSDsluCounter, 1852 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 595 SdHoareTripleChecker+Valid, 2316 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 17:41:44,559 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [595 Valid, 2316 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 17:41:44,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2024-11-18 17:41:44,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 391. [2024-11-18 17:41:44,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 1.4615384615384615) internal successors, (570), 390 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:41:44,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 570 transitions. [2024-11-18 17:41:44,565 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 570 transitions. Word has length 82 [2024-11-18 17:41:44,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 17:41:44,566 INFO L471 AbstractCegarLoop]: Abstraction has 391 states and 570 transitions. [2024-11-18 17:41:44,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:41:44,566 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 570 transitions. [2024-11-18 17:41:44,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-18 17:41:44,567 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 17:41:44,567 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 17:41:44,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 17:41:44,567 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 17:41:44,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 17:41:44,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1758230787, now seen corresponding path program 1 times [2024-11-18 17:41:44,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 17:41:44,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923901030] [2024-11-18 17:41:44,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 17:41:44,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 17:41:44,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 17:41:44,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 17:41:44,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 17:41:44,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923901030] [2024-11-18 17:41:44,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923901030] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 17:41:44,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 17:41:44,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 17:41:44,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042699909] [2024-11-18 17:41:44,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 17:41:44,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 17:41:44,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 17:41:44,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 17:41:44,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 17:41:44,787 INFO L87 Difference]: Start difference. First operand 391 states and 570 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:41:44,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 17:41:44,896 INFO L93 Difference]: Finished difference Result 746 states and 1080 transitions. [2024-11-18 17:41:44,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 17:41:44,896 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2024-11-18 17:41:44,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 17:41:44,898 INFO L225 Difference]: With dead ends: 746 [2024-11-18 17:41:44,898 INFO L226 Difference]: Without dead ends: 466 [2024-11-18 17:41:44,898 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-18 17:41:44,899 INFO L432 NwaCegarLoop]: 463 mSDtfsCounter, 677 mSDsluCounter, 1848 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 677 SdHoareTripleChecker+Valid, 2311 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 17:41:44,899 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [677 Valid, 2311 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 17:41:44,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2024-11-18 17:41:44,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 392. [2024-11-18 17:41:44,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 1.4578005115089514) internal successors, (570), 391 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:41:44,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 570 transitions. [2024-11-18 17:41:44,905 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 570 transitions. Word has length 83 [2024-11-18 17:41:44,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 17:41:44,905 INFO L471 AbstractCegarLoop]: Abstraction has 392 states and 570 transitions. [2024-11-18 17:41:44,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:41:44,905 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 570 transitions. [2024-11-18 17:41:44,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-18 17:41:44,906 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 17:41:44,906 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 17:41:44,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 17:41:44,906 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 17:41:44,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 17:41:44,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1830862058, now seen corresponding path program 1 times [2024-11-18 17:41:44,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 17:41:44,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235206860] [2024-11-18 17:41:44,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 17:41:44,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 17:41:44,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 17:41:45,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 17:41:45,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 17:41:45,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235206860] [2024-11-18 17:41:45,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235206860] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 17:41:45,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 17:41:45,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 17:41:45,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468474708] [2024-11-18 17:41:45,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 17:41:45,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 17:41:45,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 17:41:45,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 17:41:45,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 17:41:45,096 INFO L87 Difference]: Start difference. First operand 392 states and 570 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:41:45,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 17:41:45,212 INFO L93 Difference]: Finished difference Result 884 states and 1284 transitions. [2024-11-18 17:41:45,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 17:41:45,212 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2024-11-18 17:41:45,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 17:41:45,214 INFO L225 Difference]: With dead ends: 884 [2024-11-18 17:41:45,214 INFO L226 Difference]: Without dead ends: 599 [2024-11-18 17:41:45,215 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-18 17:41:45,215 INFO L432 NwaCegarLoop]: 464 mSDtfsCounter, 1071 mSDsluCounter, 1852 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1071 SdHoareTripleChecker+Valid, 2316 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 17:41:45,215 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1071 Valid, 2316 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 17:41:45,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2024-11-18 17:41:45,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 393. [2024-11-18 17:41:45,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 1.4540816326530612) internal successors, (570), 392 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:41:45,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 570 transitions. [2024-11-18 17:41:45,248 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 570 transitions. Word has length 84 [2024-11-18 17:41:45,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 17:41:45,248 INFO L471 AbstractCegarLoop]: Abstraction has 393 states and 570 transitions. [2024-11-18 17:41:45,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:41:45,248 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 570 transitions. [2024-11-18 17:41:45,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-18 17:41:45,249 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 17:41:45,249 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 17:41:45,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 17:41:45,249 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 17:41:45,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 17:41:45,249 INFO L85 PathProgramCache]: Analyzing trace with hash 189080444, now seen corresponding path program 1 times [2024-11-18 17:41:45,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 17:41:45,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307486552] [2024-11-18 17:41:45,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 17:41:45,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 17:41:45,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 17:41:45,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 17:41:45,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 17:41:45,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307486552] [2024-11-18 17:41:45,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307486552] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 17:41:45,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 17:41:45,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 17:41:45,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967215124] [2024-11-18 17:41:45,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 17:41:45,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 17:41:45,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 17:41:45,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 17:41:45,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 17:41:45,383 INFO L87 Difference]: Start difference. First operand 393 states and 570 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:41:45,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 17:41:45,452 INFO L93 Difference]: Finished difference Result 851 states and 1238 transitions. [2024-11-18 17:41:45,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 17:41:45,453 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2024-11-18 17:41:45,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 17:41:45,455 INFO L225 Difference]: With dead ends: 851 [2024-11-18 17:41:45,455 INFO L226 Difference]: Without dead ends: 566 [2024-11-18 17:41:45,455 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-18 17:41:45,456 INFO L432 NwaCegarLoop]: 468 mSDtfsCounter, 1014 mSDsluCounter, 933 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1014 SdHoareTripleChecker+Valid, 1401 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 17:41:45,456 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1014 Valid, 1401 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 17:41:45,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2024-11-18 17:41:45,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 380. [2024-11-18 17:41:45,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 1.4564643799472297) internal successors, (552), 379 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:41:45,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 552 transitions. [2024-11-18 17:41:45,465 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 552 transitions. Word has length 85 [2024-11-18 17:41:45,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 17:41:45,465 INFO L471 AbstractCegarLoop]: Abstraction has 380 states and 552 transitions. [2024-11-18 17:41:45,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:41:45,465 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 552 transitions. [2024-11-18 17:41:45,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2024-11-18 17:41:45,467 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 17:41:45,468 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 17:41:45,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 17:41:45,468 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 17:41:45,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 17:41:45,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1615793101, now seen corresponding path program 1 times [2024-11-18 17:41:45,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 17:41:45,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448576310] [2024-11-18 17:41:45,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 17:41:45,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 17:41:45,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 17:41:46,036 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 17:41:46,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 17:41:46,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448576310] [2024-11-18 17:41:46,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448576310] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 17:41:46,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206878917] [2024-11-18 17:41:46,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 17:41:46,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 17:41:46,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 17:41:46,039 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 17:41:46,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 17:41:46,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 17:41:46,536 INFO L255 TraceCheckSpWp]: Trace formula consists of 1606 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 17:41:46,546 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 17:41:46,870 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 17:41:46,872 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 17:41:46,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1206878917] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 17:41:46,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 17:41:46,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-11-18 17:41:46,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000141301] [2024-11-18 17:41:46,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 17:41:46,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 17:41:46,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 17:41:46,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 17:41:46,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-18 17:41:46,874 INFO L87 Difference]: Start difference. First operand 380 states and 552 transitions. Second operand has 4 states, 4 states have (on average 48.25) internal successors, (193), 4 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:41:47,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 17:41:47,120 INFO L93 Difference]: Finished difference Result 643 states and 937 transitions. [2024-11-18 17:41:47,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 17:41:47,120 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.25) internal successors, (193), 4 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 193 [2024-11-18 17:41:47,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 17:41:47,122 INFO L225 Difference]: With dead ends: 643 [2024-11-18 17:41:47,122 INFO L226 Difference]: Without dead ends: 379 [2024-11-18 17:41:47,122 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-18 17:41:47,123 INFO L432 NwaCegarLoop]: 295 mSDtfsCounter, 365 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 17:41:47,123 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [365 Valid, 589 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 17:41:47,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2024-11-18 17:41:47,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 379. [2024-11-18 17:41:47,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 1.4523809523809523) internal successors, (549), 378 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:41:47,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 549 transitions. [2024-11-18 17:41:47,150 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 549 transitions. Word has length 193 [2024-11-18 17:41:47,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 17:41:47,150 INFO L471 AbstractCegarLoop]: Abstraction has 379 states and 549 transitions. [2024-11-18 17:41:47,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.25) internal successors, (193), 4 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:41:47,151 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 549 transitions. [2024-11-18 17:41:47,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2024-11-18 17:41:47,152 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 17:41:47,152 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 17:41:47,170 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-18 17:41:47,356 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,SelfDestructingSolverStorable12 [2024-11-18 17:41:47,357 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 17:41:47,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 17:41:47,358 INFO L85 PathProgramCache]: Analyzing trace with hash -249123593, now seen corresponding path program 1 times [2024-11-18 17:41:47,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 17:41:47,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934327674] [2024-11-18 17:41:47,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 17:41:47,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 17:41:48,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 17:41:48,446 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 17:41:48,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 17:41:48,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934327674] [2024-11-18 17:41:48,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934327674] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 17:41:48,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 17:41:48,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 17:41:48,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398455399] [2024-11-18 17:41:48,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 17:41:48,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 17:41:48,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 17:41:48,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 17:41:48,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 17:41:48,450 INFO L87 Difference]: Start difference. First operand 379 states and 549 transitions. Second operand has 6 states, 6 states have (on average 32.333333333333336) internal successors, (194), 6 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:41:48,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 17:41:48,708 INFO L93 Difference]: Finished difference Result 767 states and 1112 transitions. [2024-11-18 17:41:48,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 17:41:48,709 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 32.333333333333336) internal successors, (194), 6 states have internal predecessors, (194), 0 states have call successors, (0), 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 194 [2024-11-18 17:41:48,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 17:41:48,710 INFO L225 Difference]: With dead ends: 767 [2024-11-18 17:41:48,710 INFO L226 Difference]: Without dead ends: 496 [2024-11-18 17:41:48,711 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-11-18 17:41:48,711 INFO L432 NwaCegarLoop]: 460 mSDtfsCounter, 772 mSDsluCounter, 1211 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 772 SdHoareTripleChecker+Valid, 1671 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 17:41:48,711 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [772 Valid, 1671 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 17:41:48,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2024-11-18 17:41:48,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 454. [2024-11-18 17:41:48,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 453 states have (on average 1.4481236203090508) internal successors, (656), 453 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:41:48,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 656 transitions. [2024-11-18 17:41:48,719 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 656 transitions. Word has length 194 [2024-11-18 17:41:48,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 17:41:48,719 INFO L471 AbstractCegarLoop]: Abstraction has 454 states and 656 transitions. [2024-11-18 17:41:48,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 32.333333333333336) internal successors, (194), 6 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:41:48,720 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 656 transitions. [2024-11-18 17:41:48,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-11-18 17:41:48,721 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 17:41:48,721 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 17:41:48,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-18 17:41:48,722 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 17:41:48,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 17:41:48,722 INFO L85 PathProgramCache]: Analyzing trace with hash -703624184, now seen corresponding path program 1 times [2024-11-18 17:41:48,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 17:41:48,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432676553] [2024-11-18 17:41:48,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 17:41:48,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 17:41:49,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 17:41:49,718 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 17:41:49,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 17:41:49,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432676553] [2024-11-18 17:41:49,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432676553] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 17:41:49,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 17:41:49,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 17:41:49,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090458353] [2024-11-18 17:41:49,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 17:41:49,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 17:41:49,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 17:41:49,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 17:41:49,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 17:41:49,721 INFO L87 Difference]: Start difference. First operand 454 states and 656 transitions. Second operand has 6 states, 6 states have (on average 32.5) internal successors, (195), 6 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:41:50,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 17:41:50,055 INFO L93 Difference]: Finished difference Result 905 states and 1307 transitions. [2024-11-18 17:41:50,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 17:41:50,055 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 32.5) internal successors, (195), 6 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 195 [2024-11-18 17:41:50,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 17:41:50,058 INFO L225 Difference]: With dead ends: 905 [2024-11-18 17:41:50,059 INFO L226 Difference]: Without dead ends: 642 [2024-11-18 17:41:50,060 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 17:41:50,060 INFO L432 NwaCegarLoop]: 510 mSDtfsCounter, 1108 mSDsluCounter, 913 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1108 SdHoareTripleChecker+Valid, 1423 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 17:41:50,060 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1108 Valid, 1423 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 17:41:50,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2024-11-18 17:41:50,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 561. [2024-11-18 17:41:50,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 560 states have (on average 1.4535714285714285) internal successors, (814), 560 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:41:50,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 814 transitions. [2024-11-18 17:41:50,070 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 814 transitions. Word has length 195 [2024-11-18 17:41:50,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 17:41:50,070 INFO L471 AbstractCegarLoop]: Abstraction has 561 states and 814 transitions. [2024-11-18 17:41:50,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 32.5) internal successors, (195), 6 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:41:50,070 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 814 transitions. [2024-11-18 17:41:50,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-11-18 17:41:50,072 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 17:41:50,072 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 17:41:50,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-18 17:41:50,072 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 17:41:50,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 17:41:50,072 INFO L85 PathProgramCache]: Analyzing trace with hash -916183446, now seen corresponding path program 1 times [2024-11-18 17:41:50,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 17:41:50,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357128840] [2024-11-18 17:41:50,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 17:41:50,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 17:41:50,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 17:41:51,568 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 17:41:51,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 17:41:51,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357128840] [2024-11-18 17:41:51,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357128840] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 17:41:51,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844295950] [2024-11-18 17:41:51,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 17:41:51,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 17:41:51,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 17:41:51,570 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 17:41:51,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 17:41:52,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 17:41:52,275 INFO L255 TraceCheckSpWp]: Trace formula consists of 1615 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-18 17:41:52,291 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 17:41:52,997 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 17:41:52,997 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 17:41:52,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844295950] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 17:41:52,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 17:41:52,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2024-11-18 17:41:52,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69705699] [2024-11-18 17:41:52,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 17:41:52,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 17:41:52,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 17:41:53,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 17:41:53,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-11-18 17:41:53,000 INFO L87 Difference]: Start difference. First operand 561 states and 814 transitions. Second operand has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:41:53,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 17:41:53,442 INFO L93 Difference]: Finished difference Result 929 states and 1352 transitions. [2024-11-18 17:41:53,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 17:41:53,443 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 196 [2024-11-18 17:41:53,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 17:41:53,445 INFO L225 Difference]: With dead ends: 929 [2024-11-18 17:41:53,445 INFO L226 Difference]: Without dead ends: 561 [2024-11-18 17:41:53,446 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-11-18 17:41:53,446 INFO L432 NwaCegarLoop]: 282 mSDtfsCounter, 745 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 745 SdHoareTripleChecker+Valid, 843 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 17:41:53,446 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [745 Valid, 843 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 17:41:53,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2024-11-18 17:41:53,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 561. [2024-11-18 17:41:53,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 560 states have (on average 1.4517857142857142) internal successors, (813), 560 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:41:53,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 813 transitions. [2024-11-18 17:41:53,454 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 813 transitions. Word has length 196 [2024-11-18 17:41:53,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 17:41:53,455 INFO L471 AbstractCegarLoop]: Abstraction has 561 states and 813 transitions. [2024-11-18 17:41:53,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:41:53,455 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 813 transitions. [2024-11-18 17:41:53,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-11-18 17:41:53,456 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 17:41:53,456 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 17:41:53,476 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 17:41:53,660 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,SelfDestructingSolverStorable15 [2024-11-18 17:41:53,663 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 17:41:53,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 17:41:53,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1663482110, now seen corresponding path program 1 times [2024-11-18 17:41:53,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 17:41:53,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966917387] [2024-11-18 17:41:53,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 17:41:53,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 17:41:54,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 17:41:55,287 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 17:41:55,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 17:41:55,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966917387] [2024-11-18 17:41:55,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966917387] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 17:41:55,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504258207] [2024-11-18 17:41:55,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 17:41:55,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 17:41:55,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 17:41:55,289 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 17:41:55,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 17:41:55,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 17:41:55,964 INFO L255 TraceCheckSpWp]: Trace formula consists of 1616 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-18 17:41:55,971 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 17:41:56,477 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 17:41:56,477 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 17:41:56,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1504258207] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 17:41:56,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 17:41:56,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2024-11-18 17:41:56,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928367139] [2024-11-18 17:41:56,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 17:41:56,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 17:41:56,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 17:41:56,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 17:41:56,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-11-18 17:41:56,479 INFO L87 Difference]: Start difference. First operand 561 states and 813 transitions. Second operand has 6 states, 6 states have (on average 32.833333333333336) internal successors, (197), 6 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:41:56,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 17:41:56,931 INFO L93 Difference]: Finished difference Result 826 states and 1199 transitions. [2024-11-18 17:41:56,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 17:41:56,931 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 32.833333333333336) internal successors, (197), 6 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 197 [2024-11-18 17:41:56,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 17:41:56,933 INFO L225 Difference]: With dead ends: 826 [2024-11-18 17:41:56,933 INFO L226 Difference]: Without dead ends: 563 [2024-11-18 17:41:56,934 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-11-18 17:41:56,934 INFO L432 NwaCegarLoop]: 284 mSDtfsCounter, 964 mSDsluCounter, 850 mSDsCounter, 0 mSdLazyCounter, 773 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 964 SdHoareTripleChecker+Valid, 1134 SdHoareTripleChecker+Invalid, 773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 17:41:56,934 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [964 Valid, 1134 Invalid, 773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 773 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 17:41:56,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2024-11-18 17:41:56,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 562. [2024-11-18 17:41:56,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 561 states have (on average 1.4509803921568627) internal successors, (814), 561 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:41:56,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 814 transitions. [2024-11-18 17:41:56,943 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 814 transitions. Word has length 197 [2024-11-18 17:41:56,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 17:41:56,943 INFO L471 AbstractCegarLoop]: Abstraction has 562 states and 814 transitions. [2024-11-18 17:41:56,943 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 32.833333333333336) internal successors, (197), 6 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:41:56,943 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 814 transitions. [2024-11-18 17:41:56,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2024-11-18 17:41:56,944 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 17:41:56,945 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 17:41:56,964 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 17:41:57,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 17:41:57,149 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 17:41:57,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 17:41:57,149 INFO L85 PathProgramCache]: Analyzing trace with hash 502067447, now seen corresponding path program 1 times [2024-11-18 17:41:57,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 17:41:57,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164559513] [2024-11-18 17:41:57,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 17:41:57,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 17:41:57,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 17:41:58,493 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 17:41:58,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 17:41:58,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164559513] [2024-11-18 17:41:58,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164559513] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 17:41:58,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2047634146] [2024-11-18 17:41:58,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 17:41:58,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 17:41:58,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 17:41:58,495 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 17:41:58,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 17:41:59,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 17:41:59,391 INFO L255 TraceCheckSpWp]: Trace formula consists of 1617 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-18 17:41:59,399 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 17:41:59,931 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 17:41:59,931 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 17:41:59,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2047634146] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 17:41:59,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 17:41:59,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2024-11-18 17:41:59,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846253903] [2024-11-18 17:41:59,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 17:41:59,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 17:41:59,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 17:41:59,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 17:41:59,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-11-18 17:41:59,933 INFO L87 Difference]: Start difference. First operand 562 states and 814 transitions. Second operand has 5 states, 5 states have (on average 39.6) internal successors, (198), 5 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:42:00,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 17:42:00,336 INFO L93 Difference]: Finished difference Result 979 states and 1423 transitions. [2024-11-18 17:42:00,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 17:42:00,337 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.6) internal successors, (198), 5 states have internal predecessors, (198), 0 states have call successors, (0), 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 198 [2024-11-18 17:42:00,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 17:42:00,339 INFO L225 Difference]: With dead ends: 979 [2024-11-18 17:42:00,339 INFO L226 Difference]: Without dead ends: 562 [2024-11-18 17:42:00,340 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-11-18 17:42:00,340 INFO L432 NwaCegarLoop]: 284 mSDtfsCounter, 730 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 17:42:00,340 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [730 Valid, 852 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 579 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 17:42:00,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2024-11-18 17:42:00,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 562. [2024-11-18 17:42:00,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 561 states have (on average 1.447415329768271) internal successors, (812), 561 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:42:00,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 812 transitions. [2024-11-18 17:42:00,350 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 812 transitions. Word has length 198 [2024-11-18 17:42:00,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 17:42:00,351 INFO L471 AbstractCegarLoop]: Abstraction has 562 states and 812 transitions. [2024-11-18 17:42:00,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.6) internal successors, (198), 5 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:42:00,351 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 812 transitions. [2024-11-18 17:42:00,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2024-11-18 17:42:00,353 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 17:42:00,353 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 17:42:00,372 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-18 17:42:00,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-18 17:42:00,555 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 17:42:00,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 17:42:00,555 INFO L85 PathProgramCache]: Analyzing trace with hash 261097460, now seen corresponding path program 1 times [2024-11-18 17:42:00,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 17:42:00,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176121314] [2024-11-18 17:42:00,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 17:42:00,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 17:42:01,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 17:42:01,974 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 17:42:01,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 17:42:01,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176121314] [2024-11-18 17:42:01,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176121314] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 17:42:01,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019369855] [2024-11-18 17:42:01,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 17:42:01,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 17:42:01,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 17:42:01,978 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 17:42:01,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 17:42:02,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 17:42:02,775 INFO L255 TraceCheckSpWp]: Trace formula consists of 1621 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-18 17:42:02,785 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 17:42:03,378 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 17:42:03,378 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 17:42:04,254 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 19 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 17:42:04,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2019369855] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 17:42:04,255 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 17:42:04,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 24 [2024-11-18 17:42:04,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52405910] [2024-11-18 17:42:04,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 17:42:04,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-18 17:42:04,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 17:42:04,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-18 17:42:04,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=473, Unknown=0, NotChecked=0, Total=552 [2024-11-18 17:42:04,257 INFO L87 Difference]: Start difference. First operand 562 states and 812 transitions. Second operand has 24 states, 24 states have (on average 23.041666666666668) internal successors, (553), 24 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:42:05,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 17:42:05,562 INFO L93 Difference]: Finished difference Result 1028 states and 1481 transitions. [2024-11-18 17:42:05,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-18 17:42:05,562 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 23.041666666666668) internal successors, (553), 24 states have internal predecessors, (553), 0 states have call successors, (0), 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 200 [2024-11-18 17:42:05,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 17:42:05,564 INFO L225 Difference]: With dead ends: 1028 [2024-11-18 17:42:05,564 INFO L226 Difference]: Without dead ends: 765 [2024-11-18 17:42:05,565 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 386 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=329, Invalid=1393, Unknown=0, NotChecked=0, Total=1722 [2024-11-18 17:42:05,566 INFO L432 NwaCegarLoop]: 282 mSDtfsCounter, 3722 mSDsluCounter, 3498 mSDsCounter, 0 mSdLazyCounter, 2553 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3722 SdHoareTripleChecker+Valid, 3780 SdHoareTripleChecker+Invalid, 2558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 2553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-18 17:42:05,566 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3722 Valid, 3780 Invalid, 2558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 2553 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-18 17:42:05,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2024-11-18 17:42:05,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 570. [2024-11-18 17:42:05,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 569 states have (on average 1.444639718804921) internal successors, (822), 569 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:42:05,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 822 transitions. [2024-11-18 17:42:05,574 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 822 transitions. Word has length 200 [2024-11-18 17:42:05,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 17:42:05,575 INFO L471 AbstractCegarLoop]: Abstraction has 570 states and 822 transitions. [2024-11-18 17:42:05,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 23.041666666666668) internal successors, (553), 24 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:42:05,575 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 822 transitions. [2024-11-18 17:42:05,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2024-11-18 17:42:05,576 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 17:42:05,576 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 17:42:05,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-18 17:42:05,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 17:42:05,777 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 17:42:05,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 17:42:05,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1168269655, now seen corresponding path program 1 times [2024-11-18 17:42:05,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 17:42:05,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103741677] [2024-11-18 17:42:05,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 17:42:05,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 17:42:06,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 17:42:07,865 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 17:42:07,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 17:42:07,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103741677] [2024-11-18 17:42:07,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103741677] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 17:42:07,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916837292] [2024-11-18 17:42:07,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 17:42:07,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 17:42:07,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 17:42:07,867 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 17:42:07,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 17:42:08,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 17:42:08,874 INFO L255 TraceCheckSpWp]: Trace formula consists of 1622 conjuncts, 89 conjuncts are in the unsatisfiable core [2024-11-18 17:42:08,880 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 17:42:09,975 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 17:42:09,976 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 17:42:09,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916837292] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 17:42:09,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 17:42:09,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [8] total 19 [2024-11-18 17:42:09,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471684774] [2024-11-18 17:42:09,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 17:42:09,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-18 17:42:09,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 17:42:09,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-18 17:42:09,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2024-11-18 17:42:09,977 INFO L87 Difference]: Start difference. First operand 570 states and 822 transitions. Second operand has 13 states, 13 states have (on average 15.461538461538462) internal successors, (201), 13 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:42:10,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 17:42:10,948 INFO L93 Difference]: Finished difference Result 1472 states and 2127 transitions. [2024-11-18 17:42:10,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-18 17:42:10,949 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 15.461538461538462) internal successors, (201), 13 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 201 [2024-11-18 17:42:10,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 17:42:10,954 INFO L225 Difference]: With dead ends: 1472 [2024-11-18 17:42:10,955 INFO L226 Difference]: Without dead ends: 1120 [2024-11-18 17:42:10,955 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 191 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=471, Unknown=0, NotChecked=0, Total=552 [2024-11-18 17:42:10,956 INFO L432 NwaCegarLoop]: 253 mSDtfsCounter, 1001 mSDsluCounter, 2313 mSDsCounter, 0 mSdLazyCounter, 2180 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1001 SdHoareTripleChecker+Valid, 2566 SdHoareTripleChecker+Invalid, 2182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-18 17:42:10,956 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1001 Valid, 2566 Invalid, 2182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2180 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-18 17:42:10,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1120 states. [2024-11-18 17:42:10,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1120 to 864. [2024-11-18 17:42:10,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 864 states, 863 states have (on average 1.4264194669756662) internal successors, (1231), 863 states have internal predecessors, (1231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:42:10,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 1231 transitions. [2024-11-18 17:42:10,974 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 1231 transitions. Word has length 201 [2024-11-18 17:42:10,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 17:42:10,975 INFO L471 AbstractCegarLoop]: Abstraction has 864 states and 1231 transitions. [2024-11-18 17:42:10,975 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 15.461538461538462) internal successors, (201), 13 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:42:10,975 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 1231 transitions. [2024-11-18 17:42:10,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2024-11-18 17:42:10,977 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 17:42:10,977 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 17:42:10,997 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-18 17:42:11,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 17:42:11,178 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 17:42:11,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 17:42:11,178 INFO L85 PathProgramCache]: Analyzing trace with hash 2050425004, now seen corresponding path program 1 times [2024-11-18 17:42:11,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 17:42:11,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931064037] [2024-11-18 17:42:11,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 17:42:11,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 17:42:11,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 17:42:13,196 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 17:42:13,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 17:42:13,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931064037] [2024-11-18 17:42:13,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931064037] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 17:42:13,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146828645] [2024-11-18 17:42:13,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 17:42:13,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 17:42:13,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 17:42:13,198 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 17:42:13,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-18 17:42:14,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 17:42:14,118 INFO L255 TraceCheckSpWp]: Trace formula consists of 1625 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-18 17:42:14,124 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 17:42:14,958 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 17:42:14,962 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 17:42:14,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146828645] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 17:42:14,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 17:42:14,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2024-11-18 17:42:14,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278159981] [2024-11-18 17:42:14,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 17:42:14,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 17:42:14,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 17:42:14,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 17:42:14,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-11-18 17:42:14,964 INFO L87 Difference]: Start difference. First operand 864 states and 1231 transitions. Second operand has 6 states, 6 states have (on average 33.666666666666664) internal successors, (202), 6 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:42:15,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 17:42:15,303 INFO L93 Difference]: Finished difference Result 1412 states and 2023 transitions. [2024-11-18 17:42:15,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 17:42:15,304 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 33.666666666666664) internal successors, (202), 6 states have internal predecessors, (202), 0 states have call successors, (0), 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 202 [2024-11-18 17:42:15,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 17:42:15,306 INFO L225 Difference]: With dead ends: 1412 [2024-11-18 17:42:15,306 INFO L226 Difference]: Without dead ends: 876 [2024-11-18 17:42:15,307 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 199 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-18 17:42:15,307 INFO L432 NwaCegarLoop]: 288 mSDtfsCounter, 359 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 761 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 1146 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 17:42:15,307 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [359 Valid, 1146 Invalid, 762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 761 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 17:42:15,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2024-11-18 17:42:15,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 870. [2024-11-18 17:42:15,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 870 states, 869 states have (on average 1.4234752589182968) internal successors, (1237), 869 states have internal predecessors, (1237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:42:15,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 870 states to 870 states and 1237 transitions. [2024-11-18 17:42:15,322 INFO L78 Accepts]: Start accepts. Automaton has 870 states and 1237 transitions. Word has length 202 [2024-11-18 17:42:15,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 17:42:15,322 INFO L471 AbstractCegarLoop]: Abstraction has 870 states and 1237 transitions. [2024-11-18 17:42:15,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 33.666666666666664) internal successors, (202), 6 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:42:15,322 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states and 1237 transitions. [2024-11-18 17:42:15,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2024-11-18 17:42:15,323 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 17:42:15,324 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 17:42:15,343 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-18 17:42:15,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 17:42:15,525 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 17:42:15,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 17:42:15,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1056325076, now seen corresponding path program 1 times [2024-11-18 17:42:15,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 17:42:15,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30684147] [2024-11-18 17:42:15,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 17:42:15,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 17:42:16,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 17:42:17,760 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 17:42:17,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 17:42:17,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30684147] [2024-11-18 17:42:17,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30684147] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 17:42:17,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647673586] [2024-11-18 17:42:17,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 17:42:17,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 17:42:17,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 17:42:17,763 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 17:42:17,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-18 17:42:18,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 17:42:18,875 INFO L255 TraceCheckSpWp]: Trace formula consists of 1626 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-18 17:42:18,883 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 17:42:19,645 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 17:42:19,645 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 17:42:20,886 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 17:42:20,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [647673586] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 17:42:20,887 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 17:42:20,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 15, 15] total 34 [2024-11-18 17:42:20,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530853499] [2024-11-18 17:42:20,887 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 17:42:20,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-18 17:42:20,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 17:42:20,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-18 17:42:20,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=981, Unknown=0, NotChecked=0, Total=1122 [2024-11-18 17:42:20,889 INFO L87 Difference]: Start difference. First operand 870 states and 1237 transitions. Second operand has 34 states, 34 states have (on average 17.205882352941178) internal successors, (585), 34 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:42:23,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 17:42:23,144 INFO L93 Difference]: Finished difference Result 2073 states and 2977 transitions. [2024-11-18 17:42:23,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-11-18 17:42:23,145 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 17.205882352941178) internal successors, (585), 34 states have internal predecessors, (585), 0 states have call successors, (0), 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 203 [2024-11-18 17:42:23,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 17:42:23,149 INFO L225 Difference]: With dead ends: 2073 [2024-11-18 17:42:23,149 INFO L226 Difference]: Without dead ends: 1632 [2024-11-18 17:42:23,152 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 381 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1294 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=857, Invalid=5305, Unknown=0, NotChecked=0, Total=6162 [2024-11-18 17:42:23,153 INFO L432 NwaCegarLoop]: 273 mSDtfsCounter, 4158 mSDsluCounter, 4303 mSDsCounter, 0 mSdLazyCounter, 3582 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4158 SdHoareTripleChecker+Valid, 4576 SdHoareTripleChecker+Invalid, 3601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 3582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-18 17:42:23,153 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4158 Valid, 4576 Invalid, 3601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 3582 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-18 17:42:23,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1632 states. [2024-11-18 17:42:23,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1632 to 1432. [2024-11-18 17:42:23,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1431 states have (on average 1.4283717679944095) internal successors, (2044), 1431 states have internal predecessors, (2044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:42:23,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 2044 transitions. [2024-11-18 17:42:23,172 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 2044 transitions. Word has length 203 [2024-11-18 17:42:23,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 17:42:23,172 INFO L471 AbstractCegarLoop]: Abstraction has 1432 states and 2044 transitions. [2024-11-18 17:42:23,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 17.205882352941178) internal successors, (585), 34 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:42:23,173 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 2044 transitions. [2024-11-18 17:42:23,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-11-18 17:42:23,174 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 17:42:23,174 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 17:42:23,192 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-18 17:42:23,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-18 17:42:23,375 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 17:42:23,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 17:42:23,375 INFO L85 PathProgramCache]: Analyzing trace with hash 372064347, now seen corresponding path program 1 times [2024-11-18 17:42:23,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 17:42:23,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736477080] [2024-11-18 17:42:23,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 17:42:23,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 17:42:23,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 17:42:24,437 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 17:42:24,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 17:42:24,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736477080] [2024-11-18 17:42:24,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736477080] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 17:42:24,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 17:42:24,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 17:42:24,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289851617] [2024-11-18 17:42:24,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 17:42:24,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 17:42:24,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 17:42:24,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 17:42:24,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-18 17:42:24,438 INFO L87 Difference]: Start difference. First operand 1432 states and 2044 transitions. Second operand has 8 states, 8 states have (on average 25.5) internal successors, (204), 8 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:42:25,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 17:42:25,059 INFO L93 Difference]: Finished difference Result 2652 states and 3799 transitions. [2024-11-18 17:42:25,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 17:42:25,060 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 25.5) internal successors, (204), 8 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 204 [2024-11-18 17:42:25,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 17:42:25,065 INFO L225 Difference]: With dead ends: 2652 [2024-11-18 17:42:25,065 INFO L226 Difference]: Without dead ends: 2118 [2024-11-18 17:42:25,067 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2024-11-18 17:42:25,068 INFO L432 NwaCegarLoop]: 646 mSDtfsCounter, 1270 mSDsluCounter, 2066 mSDsCounter, 0 mSdLazyCounter, 1318 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1270 SdHoareTripleChecker+Valid, 2712 SdHoareTripleChecker+Invalid, 1321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 17:42:25,068 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1270 Valid, 2712 Invalid, 1321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1318 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 17:42:25,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2118 states. [2024-11-18 17:42:25,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2118 to 1784. [2024-11-18 17:42:25,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1784 states, 1783 states have (on average 1.4234436343241728) internal successors, (2538), 1783 states have internal predecessors, (2538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:42:25,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1784 states to 1784 states and 2538 transitions. [2024-11-18 17:42:25,094 INFO L78 Accepts]: Start accepts. Automaton has 1784 states and 2538 transitions. Word has length 204 [2024-11-18 17:42:25,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 17:42:25,094 INFO L471 AbstractCegarLoop]: Abstraction has 1784 states and 2538 transitions. [2024-11-18 17:42:25,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 25.5) internal successors, (204), 8 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:42:25,094 INFO L276 IsEmpty]: Start isEmpty. Operand 1784 states and 2538 transitions. [2024-11-18 17:42:25,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-11-18 17:42:25,096 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 17:42:25,096 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 17:42:25,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-18 17:42:25,097 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 17:42:25,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 17:42:25,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1478250858, now seen corresponding path program 1 times [2024-11-18 17:42:25,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 17:42:25,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602439990] [2024-11-18 17:42:25,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 17:42:25,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 17:42:25,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 17:42:28,238 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 17:42:28,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 17:42:28,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602439990] [2024-11-18 17:42:28,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602439990] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 17:42:28,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098017210] [2024-11-18 17:42:28,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 17:42:28,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 17:42:28,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 17:42:28,242 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 17:42:28,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-18 17:42:29,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 17:42:29,321 INFO L255 TraceCheckSpWp]: Trace formula consists of 1630 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-11-18 17:42:29,327 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 17:42:30,026 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 17:42:30,026 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 17:42:32,048 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 17:42:32,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1098017210] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 17:42:32,049 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 17:42:32,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 17, 20] total 53 [2024-11-18 17:42:32,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511187423] [2024-11-18 17:42:32,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 17:42:32,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-11-18 17:42:32,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 17:42:32,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-11-18 17:42:32,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=312, Invalid=2444, Unknown=0, NotChecked=0, Total=2756 [2024-11-18 17:42:32,051 INFO L87 Difference]: Start difference. First operand 1784 states and 2538 transitions. Second operand has 53 states, 53 states have (on average 11.037735849056604) internal successors, (585), 53 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:42:36,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 17:42:36,371 INFO L93 Difference]: Finished difference Result 5561 states and 7961 transitions. [2024-11-18 17:42:36,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-11-18 17:42:36,372 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 11.037735849056604) internal successors, (585), 53 states have internal predecessors, (585), 0 states have call successors, (0), 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 205 [2024-11-18 17:42:36,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 17:42:36,383 INFO L225 Difference]: With dead ends: 5561 [2024-11-18 17:42:36,383 INFO L226 Difference]: Without dead ends: 4498 [2024-11-18 17:42:36,388 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 379 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3494 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1483, Invalid=10507, Unknown=0, NotChecked=0, Total=11990 [2024-11-18 17:42:36,388 INFO L432 NwaCegarLoop]: 274 mSDtfsCounter, 7309 mSDsluCounter, 8983 mSDsCounter, 0 mSdLazyCounter, 6534 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7309 SdHoareTripleChecker+Valid, 9257 SdHoareTripleChecker+Invalid, 6550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 6534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-18 17:42:36,388 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7309 Valid, 9257 Invalid, 6550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 6534 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-18 17:42:36,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4498 states. [2024-11-18 17:42:36,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4498 to 2711. [2024-11-18 17:42:36,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2711 states, 2710 states have (on average 1.4247232472324722) internal successors, (3861), 2710 states have internal predecessors, (3861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:42:36,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2711 states to 2711 states and 3861 transitions. [2024-11-18 17:42:36,428 INFO L78 Accepts]: Start accepts. Automaton has 2711 states and 3861 transitions. Word has length 205 [2024-11-18 17:42:36,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 17:42:36,429 INFO L471 AbstractCegarLoop]: Abstraction has 2711 states and 3861 transitions. [2024-11-18 17:42:36,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 11.037735849056604) internal successors, (585), 53 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:42:36,429 INFO L276 IsEmpty]: Start isEmpty. Operand 2711 states and 3861 transitions. [2024-11-18 17:42:36,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-11-18 17:42:36,431 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 17:42:36,431 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 17:42:36,451 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-18 17:42:36,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-18 17:42:36,632 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 17:42:36,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 17:42:36,633 INFO L85 PathProgramCache]: Analyzing trace with hash 365789508, now seen corresponding path program 1 times [2024-11-18 17:42:36,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 17:42:36,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276474265] [2024-11-18 17:42:36,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 17:42:36,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 17:42:37,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 17:42:38,896 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 17:42:38,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 17:42:38,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276474265] [2024-11-18 17:42:38,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276474265] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 17:42:38,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211388100] [2024-11-18 17:42:38,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 17:42:38,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 17:42:38,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 17:42:38,898 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 17:42:38,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-18 17:42:40,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 17:42:40,013 INFO L255 TraceCheckSpWp]: Trace formula consists of 1630 conjuncts, 78 conjuncts are in the unsatisfiable core [2024-11-18 17:42:40,020 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 17:42:40,915 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 17:42:40,916 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 17:42:41,897 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 17:42:41,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1211388100] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 17:42:41,897 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 17:42:41,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 17, 15] total 41 [2024-11-18 17:42:41,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662791062] [2024-11-18 17:42:41,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 17:42:41,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-18 17:42:41,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 17:42:41,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-18 17:42:41,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=1457, Unknown=0, NotChecked=0, Total=1640 [2024-11-18 17:42:41,900 INFO L87 Difference]: Start difference. First operand 2711 states and 3861 transitions. Second operand has 41 states, 41 states have (on average 14.268292682926829) internal successors, (585), 41 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:42:44,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 17:42:44,056 INFO L93 Difference]: Finished difference Result 4569 states and 6539 transitions. [2024-11-18 17:42:44,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-18 17:42:44,056 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 14.268292682926829) internal successors, (585), 41 states have internal predecessors, (585), 0 states have call successors, (0), 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 205 [2024-11-18 17:42:44,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 17:42:44,065 INFO L225 Difference]: With dead ends: 4569 [2024-11-18 17:42:44,065 INFO L226 Difference]: Without dead ends: 3938 [2024-11-18 17:42:44,068 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 383 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1629 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=863, Invalid=5143, Unknown=0, NotChecked=0, Total=6006 [2024-11-18 17:42:44,068 INFO L432 NwaCegarLoop]: 446 mSDtfsCounter, 6999 mSDsluCounter, 8239 mSDsCounter, 0 mSdLazyCounter, 4214 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6999 SdHoareTripleChecker+Valid, 8685 SdHoareTripleChecker+Invalid, 4225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 4214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-18 17:42:44,068 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6999 Valid, 8685 Invalid, 4225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 4214 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-18 17:42:44,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3938 states. [2024-11-18 17:42:44,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3938 to 2732. [2024-11-18 17:42:44,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2732 states, 2731 states have (on average 1.4247528377883558) internal successors, (3891), 2731 states have internal predecessors, (3891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:42:44,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2732 states to 2732 states and 3891 transitions. [2024-11-18 17:42:44,103 INFO L78 Accepts]: Start accepts. Automaton has 2732 states and 3891 transitions. Word has length 205 [2024-11-18 17:42:44,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 17:42:44,103 INFO L471 AbstractCegarLoop]: Abstraction has 2732 states and 3891 transitions. [2024-11-18 17:42:44,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 14.268292682926829) internal successors, (585), 41 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 17:42:44,104 INFO L276 IsEmpty]: Start isEmpty. Operand 2732 states and 3891 transitions. [2024-11-18 17:42:44,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-11-18 17:42:44,105 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 17:42:44,105 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 17:42:44,125 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-18 17:42:44,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-18 17:42:44,307 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 17:42:44,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 17:42:44,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1501098862, now seen corresponding path program 1 times [2024-11-18 17:42:44,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 17:42:44,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071004149] [2024-11-18 17:42:44,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 17:42:44,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 17:42:45,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 17:42:49,258 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 17:42:49,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 17:42:49,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071004149] [2024-11-18 17:42:49,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071004149] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 17:42:49,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239767951] [2024-11-18 17:42:49,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 17:42:49,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 17:42:49,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 17:42:49,259 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 17:42:49,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process