./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem11_label02.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem11_label02.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 30f62f9fddfecd916215dd8f1b75b140359bb989ba38a829add2eea4e4b271dc --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-13 23:26:40,496 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 23:26:40,547 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-13 23:26:40,557 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 23:26:40,558 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 23:26:40,571 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 23:26:40,572 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 23:26:40,572 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 23:26:40,573 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 23:26:40,573 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 23:26:40,573 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 23:26:40,573 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 23:26:40,574 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 23:26:40,574 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 23:26:40,574 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 23:26:40,575 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 23:26:40,575 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 23:26:40,575 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 23:26:40,575 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 23:26:40,575 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 23:26:40,576 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 23:26:40,576 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 23:26:40,576 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 23:26:40,577 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 23:26:40,577 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 23:26:40,577 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 23:26:40,577 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 23:26:40,577 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 23:26:40,578 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 23:26:40,578 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 23:26:40,578 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 23:26:40,578 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 23:26:40,579 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 23:26:40,579 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 23:26:40,579 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 23:26:40,579 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 23:26:40,579 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 23:26:40,580 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 23:26:40,580 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 23:26:40,580 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 23:26:40,580 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 23:26:40,581 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 23:26:40,581 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 30f62f9fddfecd916215dd8f1b75b140359bb989ba38a829add2eea4e4b271dc [2024-10-13 23:26:40,760 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 23:26:40,781 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 23:26:40,783 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 23:26:40,785 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 23:26:40,785 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 23:26:40,786 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem11_label02.c [2024-10-13 23:26:42,236 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 23:26:42,449 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 23:26:42,449 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem11_label02.c [2024-10-13 23:26:42,462 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b3122b6a/45b18fc16161431980bb6c40e03e9c06/FLAG9f96f6104 [2024-10-13 23:26:42,478 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b3122b6a/45b18fc16161431980bb6c40e03e9c06 [2024-10-13 23:26:42,481 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 23:26:42,482 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 23:26:42,483 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 23:26:42,483 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 23:26:42,488 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 23:26:42,488 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:26:42" (1/1) ... [2024-10-13 23:26:42,489 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17a57272 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:26:42, skipping insertion in model container [2024-10-13 23:26:42,489 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:26:42" (1/1) ... [2024-10-13 23:26:42,538 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 23:26:42,714 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem11_label02.c[7865,7878] [2024-10-13 23:26:42,893 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 23:26:42,901 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 23:26:42,927 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem11_label02.c[7865,7878] [2024-10-13 23:26:43,061 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 23:26:43,077 INFO L204 MainTranslator]: Completed translation [2024-10-13 23:26:43,078 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:26:43 WrapperNode [2024-10-13 23:26:43,078 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 23:26:43,079 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 23:26:43,079 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 23:26:43,079 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 23:26:43,084 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:26:43" (1/1) ... [2024-10-13 23:26:43,111 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:26:43" (1/1) ... [2024-10-13 23:26:43,188 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1000 [2024-10-13 23:26:43,189 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 23:26:43,189 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 23:26:43,189 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 23:26:43,189 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 23:26:43,201 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:26:43" (1/1) ... [2024-10-13 23:26:43,201 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:26:43" (1/1) ... [2024-10-13 23:26:43,219 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:26:43" (1/1) ... [2024-10-13 23:26:43,271 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-13 23:26:43,272 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:26:43" (1/1) ... [2024-10-13 23:26:43,272 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:26:43" (1/1) ... [2024-10-13 23:26:43,309 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:26:43" (1/1) ... [2024-10-13 23:26:43,315 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:26:43" (1/1) ... [2024-10-13 23:26:43,324 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:26:43" (1/1) ... [2024-10-13 23:26:43,331 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:26:43" (1/1) ... [2024-10-13 23:26:43,339 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 23:26:43,340 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 23:26:43,340 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 23:26:43,340 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 23:26:43,340 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:26:43" (1/1) ... [2024-10-13 23:26:43,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 23:26:43,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 23:26:43,366 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-13 23:26:43,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-13 23:26:43,401 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 23:26:43,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 23:26:43,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 23:26:43,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 23:26:43,460 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 23:26:43,462 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 23:26:44,606 INFO L? ?]: Removed 129 outVars from TransFormulas that were not future-live. [2024-10-13 23:26:44,607 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 23:26:44,640 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 23:26:44,640 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-13 23:26:44,641 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:26:44 BoogieIcfgContainer [2024-10-13 23:26:44,641 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 23:26:44,642 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 23:26:44,642 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 23:26:44,645 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 23:26:44,645 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:26:42" (1/3) ... [2024-10-13 23:26:44,646 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e546a33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:26:44, skipping insertion in model container [2024-10-13 23:26:44,646 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:26:43" (2/3) ... [2024-10-13 23:26:44,646 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e546a33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:26:44, skipping insertion in model container [2024-10-13 23:26:44,646 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:26:44" (3/3) ... [2024-10-13 23:26:44,647 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label02.c [2024-10-13 23:26:44,660 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 23:26:44,660 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-13 23:26:44,708 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 23:26:44,713 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;@55669f4b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 23:26:44,713 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-13 23:26:44,717 INFO L276 IsEmpty]: Start isEmpty. Operand has 221 states, 219 states have (on average 1.917808219178082) internal successors, (420), 220 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:26:44,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-10-13 23:26:44,723 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:26:44,723 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] [2024-10-13 23:26:44,724 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:26:44,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:26:44,728 INFO L85 PathProgramCache]: Analyzing trace with hash -609861129, now seen corresponding path program 1 times [2024-10-13 23:26:44,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:26:44,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105880752] [2024-10-13 23:26:44,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:26:44,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:26:44,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:26:44,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 23:26:44,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:26:44,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105880752] [2024-10-13 23:26:44,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105880752] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:26:44,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:26:44,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 23:26:44,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482777268] [2024-10-13 23:26:44,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:26:44,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-13 23:26:44,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:26:44,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-13 23:26:44,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-13 23:26:44,882 INFO L87 Difference]: Start difference. First operand has 221 states, 219 states have (on average 1.917808219178082) internal successors, (420), 220 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:26:44,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:26:44,917 INFO L93 Difference]: Finished difference Result 441 states and 839 transitions. [2024-10-13 23:26:44,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-13 23:26:44,921 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2024-10-13 23:26:44,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:26:44,931 INFO L225 Difference]: With dead ends: 441 [2024-10-13 23:26:44,931 INFO L226 Difference]: Without dead ends: 219 [2024-10-13 23:26:44,935 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-13 23:26:44,939 INFO L432 NwaCegarLoop]: 355 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-13 23:26:44,940 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 355 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-13 23:26:44,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2024-10-13 23:26:44,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2024-10-13 23:26:44,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 218 states have (on average 1.628440366972477) internal successors, (355), 218 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:26:44,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 355 transitions. [2024-10-13 23:26:44,975 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 355 transitions. Word has length 53 [2024-10-13 23:26:44,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:26:44,976 INFO L471 AbstractCegarLoop]: Abstraction has 219 states and 355 transitions. [2024-10-13 23:26:44,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:26:44,976 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 355 transitions. [2024-10-13 23:26:44,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-10-13 23:26:44,977 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:26:44,977 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] [2024-10-13 23:26:44,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 23:26:44,977 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:26:44,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:26:44,978 INFO L85 PathProgramCache]: Analyzing trace with hash -120741172, now seen corresponding path program 1 times [2024-10-13 23:26:44,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:26:44,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901554971] [2024-10-13 23:26:44,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:26:44,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:26:45,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:26:45,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 23:26:45,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:26:45,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901554971] [2024-10-13 23:26:45,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901554971] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:26:45,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:26:45,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 23:26:45,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627447529] [2024-10-13 23:26:45,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:26:45,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:26:45,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:26:45,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:26:45,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:26:45,103 INFO L87 Difference]: Start difference. First operand 219 states and 355 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:26:45,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:26:45,966 INFO L93 Difference]: Finished difference Result 639 states and 1042 transitions. [2024-10-13 23:26:45,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:26:45,966 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2024-10-13 23:26:45,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:26:45,969 INFO L225 Difference]: With dead ends: 639 [2024-10-13 23:26:45,969 INFO L226 Difference]: Without dead ends: 421 [2024-10-13 23:26:45,969 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:26:45,970 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 158 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-13 23:26:45,971 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 120 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-13 23:26:45,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2024-10-13 23:26:45,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 411. [2024-10-13 23:26:45,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 410 states have (on average 1.524390243902439) internal successors, (625), 410 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:26:45,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 625 transitions. [2024-10-13 23:26:45,987 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 625 transitions. Word has length 53 [2024-10-13 23:26:45,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:26:45,988 INFO L471 AbstractCegarLoop]: Abstraction has 411 states and 625 transitions. [2024-10-13 23:26:45,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:26:45,988 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 625 transitions. [2024-10-13 23:26:45,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-10-13 23:26:45,991 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:26:45,991 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:26:45,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 23:26:45,991 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:26:45,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:26:45,992 INFO L85 PathProgramCache]: Analyzing trace with hash 537119433, now seen corresponding path program 1 times [2024-10-13 23:26:45,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:26:45,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636749900] [2024-10-13 23:26:45,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:26:45,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:26:46,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:26:46,118 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 23:26:46,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:26:46,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636749900] [2024-10-13 23:26:46,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636749900] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:26:46,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:26:46,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 23:26:46,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918251417] [2024-10-13 23:26:46,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:26:46,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:26:46,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:26:46,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:26:46,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:26:46,123 INFO L87 Difference]: Start difference. First operand 411 states and 625 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:26:46,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:26:46,765 INFO L93 Difference]: Finished difference Result 1193 states and 1820 transitions. [2024-10-13 23:26:46,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:26:46,765 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 0 states have call successors, (0), 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 119 [2024-10-13 23:26:46,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:26:46,769 INFO L225 Difference]: With dead ends: 1193 [2024-10-13 23:26:46,769 INFO L226 Difference]: Without dead ends: 783 [2024-10-13 23:26:46,773 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:26:46,774 INFO L432 NwaCegarLoop]: 128 mSDtfsCounter, 175 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-13 23:26:46,774 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 152 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-13 23:26:46,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2024-10-13 23:26:46,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 783. [2024-10-13 23:26:46,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 783 states, 782 states have (on average 1.3746803069053708) internal successors, (1075), 782 states have internal predecessors, (1075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:26:46,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 783 states to 783 states and 1075 transitions. [2024-10-13 23:26:46,809 INFO L78 Accepts]: Start accepts. Automaton has 783 states and 1075 transitions. Word has length 119 [2024-10-13 23:26:46,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:26:46,813 INFO L471 AbstractCegarLoop]: Abstraction has 783 states and 1075 transitions. [2024-10-13 23:26:46,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:26:46,814 INFO L276 IsEmpty]: Start isEmpty. Operand 783 states and 1075 transitions. [2024-10-13 23:26:46,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-10-13 23:26:46,816 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:26:46,817 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:26:46,817 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 23:26:46,817 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:26:46,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:26:46,819 INFO L85 PathProgramCache]: Analyzing trace with hash -430333825, now seen corresponding path program 1 times [2024-10-13 23:26:46,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:26:46,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937294799] [2024-10-13 23:26:46,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:26:46,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:26:46,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:26:47,142 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 23:26:47,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:26:47,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937294799] [2024-10-13 23:26:47,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937294799] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:26:47,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:26:47,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 23:26:47,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514102961] [2024-10-13 23:26:47,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:26:47,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:26:47,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:26:47,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:26:47,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:26:47,144 INFO L87 Difference]: Start difference. First operand 783 states and 1075 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:26:47,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:26:47,770 INFO L93 Difference]: Finished difference Result 1935 states and 2598 transitions. [2024-10-13 23:26:47,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:26:47,770 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 0 states have call successors, (0), 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 123 [2024-10-13 23:26:47,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:26:47,774 INFO L225 Difference]: With dead ends: 1935 [2024-10-13 23:26:47,774 INFO L226 Difference]: Without dead ends: 1153 [2024-10-13 23:26:47,775 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:26:47,776 INFO L432 NwaCegarLoop]: 166 mSDtfsCounter, 119 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-13 23:26:47,776 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 188 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-13 23:26:47,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1153 states. [2024-10-13 23:26:47,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1153 to 1152. [2024-10-13 23:26:47,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1152 states, 1151 states have (on average 1.2701998262380538) internal successors, (1462), 1151 states have internal predecessors, (1462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:26:47,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1152 states to 1152 states and 1462 transitions. [2024-10-13 23:26:47,793 INFO L78 Accepts]: Start accepts. Automaton has 1152 states and 1462 transitions. Word has length 123 [2024-10-13 23:26:47,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:26:47,794 INFO L471 AbstractCegarLoop]: Abstraction has 1152 states and 1462 transitions. [2024-10-13 23:26:47,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:26:47,794 INFO L276 IsEmpty]: Start isEmpty. Operand 1152 states and 1462 transitions. [2024-10-13 23:26:47,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-10-13 23:26:47,796 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:26:47,796 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:26:47,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 23:26:47,796 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:26:47,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:26:47,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1353826200, now seen corresponding path program 1 times [2024-10-13 23:26:47,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:26:47,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199501433] [2024-10-13 23:26:47,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:26:47,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:26:47,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:26:48,078 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-10-13 23:26:48,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:26:48,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199501433] [2024-10-13 23:26:48,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199501433] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:26:48,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:26:48,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 23:26:48,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83644491] [2024-10-13 23:26:48,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:26:48,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:26:48,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:26:48,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:26:48,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:26:48,080 INFO L87 Difference]: Start difference. First operand 1152 states and 1462 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:26:48,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:26:48,672 INFO L93 Difference]: Finished difference Result 2493 states and 3188 transitions. [2024-10-13 23:26:48,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:26:48,672 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 0 states have call successors, (0), 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 165 [2024-10-13 23:26:48,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:26:48,676 INFO L225 Difference]: With dead ends: 2493 [2024-10-13 23:26:48,676 INFO L226 Difference]: Without dead ends: 1526 [2024-10-13 23:26:48,677 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:26:48,678 INFO L432 NwaCegarLoop]: 124 mSDtfsCounter, 106 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-13 23:26:48,678 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 152 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-13 23:26:48,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1526 states. [2024-10-13 23:26:48,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1526 to 1525. [2024-10-13 23:26:48,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1525 states, 1524 states have (on average 1.2559055118110236) internal successors, (1914), 1524 states have internal predecessors, (1914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:26:48,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1525 states to 1525 states and 1914 transitions. [2024-10-13 23:26:48,694 INFO L78 Accepts]: Start accepts. Automaton has 1525 states and 1914 transitions. Word has length 165 [2024-10-13 23:26:48,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:26:48,695 INFO L471 AbstractCegarLoop]: Abstraction has 1525 states and 1914 transitions. [2024-10-13 23:26:48,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:26:48,695 INFO L276 IsEmpty]: Start isEmpty. Operand 1525 states and 1914 transitions. [2024-10-13 23:26:48,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-10-13 23:26:48,696 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:26:48,697 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:26:48,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 23:26:48,697 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:26:48,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:26:48,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1991490179, now seen corresponding path program 1 times [2024-10-13 23:26:48,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:26:48,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684611627] [2024-10-13 23:26:48,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:26:48,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:26:48,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:26:48,939 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 23:26:48,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:26:48,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684611627] [2024-10-13 23:26:48,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684611627] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:26:48,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:26:48,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:26:48,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101883952] [2024-10-13 23:26:48,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:26:48,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:26:48,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:26:48,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:26:48,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:26:48,944 INFO L87 Difference]: Start difference. First operand 1525 states and 1914 transitions. Second operand has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:26:49,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:26:49,502 INFO L93 Difference]: Finished difference Result 2863 states and 3635 transitions. [2024-10-13 23:26:49,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:26:49,503 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 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 180 [2024-10-13 23:26:49,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:26:49,507 INFO L225 Difference]: With dead ends: 2863 [2024-10-13 23:26:49,507 INFO L226 Difference]: Without dead ends: 1523 [2024-10-13 23:26:49,508 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:26:49,509 INFO L432 NwaCegarLoop]: 284 mSDtfsCounter, 181 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-13 23:26:49,509 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 303 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-13 23:26:49,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1523 states. [2024-10-13 23:26:49,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1523 to 1523. [2024-10-13 23:26:49,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1523 states, 1522 states have (on average 1.2109067017082786) internal successors, (1843), 1522 states have internal predecessors, (1843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:26:49,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1523 states to 1523 states and 1843 transitions. [2024-10-13 23:26:49,524 INFO L78 Accepts]: Start accepts. Automaton has 1523 states and 1843 transitions. Word has length 180 [2024-10-13 23:26:49,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:26:49,525 INFO L471 AbstractCegarLoop]: Abstraction has 1523 states and 1843 transitions. [2024-10-13 23:26:49,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:26:49,525 INFO L276 IsEmpty]: Start isEmpty. Operand 1523 states and 1843 transitions. [2024-10-13 23:26:49,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2024-10-13 23:26:49,527 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:26:49,528 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-13 23:26:49,528 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-13 23:26:49,528 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:26:49,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:26:49,528 INFO L85 PathProgramCache]: Analyzing trace with hash -127289061, now seen corresponding path program 1 times [2024-10-13 23:26:49,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:26:49,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813700298] [2024-10-13 23:26:49,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:26:49,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:26:49,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:26:49,722 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-10-13 23:26:49,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:26:49,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813700298] [2024-10-13 23:26:49,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813700298] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:26:49,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:26:49,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:26:49,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361952320] [2024-10-13 23:26:49,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:26:49,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:26:49,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:26:49,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:26:49,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:26:49,724 INFO L87 Difference]: Start difference. First operand 1523 states and 1843 transitions. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:26:50,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:26:50,361 INFO L93 Difference]: Finished difference Result 3602 states and 4426 transitions. [2024-10-13 23:26:50,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:26:50,361 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 235 [2024-10-13 23:26:50,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:26:50,367 INFO L225 Difference]: With dead ends: 3602 [2024-10-13 23:26:50,367 INFO L226 Difference]: Without dead ends: 2264 [2024-10-13 23:26:50,368 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:26:50,369 INFO L432 NwaCegarLoop]: 364 mSDtfsCounter, 143 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-13 23:26:50,369 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 383 Invalid, 678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-13 23:26:50,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2264 states. [2024-10-13 23:26:50,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2264 to 2075. [2024-10-13 23:26:50,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2075 states, 2074 states have (on average 1.1923818707810994) internal successors, (2473), 2074 states have internal predecessors, (2473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:26:50,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2075 states to 2075 states and 2473 transitions. [2024-10-13 23:26:50,390 INFO L78 Accepts]: Start accepts. Automaton has 2075 states and 2473 transitions. Word has length 235 [2024-10-13 23:26:50,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:26:50,390 INFO L471 AbstractCegarLoop]: Abstraction has 2075 states and 2473 transitions. [2024-10-13 23:26:50,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:26:50,391 INFO L276 IsEmpty]: Start isEmpty. Operand 2075 states and 2473 transitions. [2024-10-13 23:26:50,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2024-10-13 23:26:50,393 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:26:50,393 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:26:50,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-13 23:26:50,393 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:26:50,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:26:50,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1431254700, now seen corresponding path program 1 times [2024-10-13 23:26:50,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:26:50,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693088787] [2024-10-13 23:26:50,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:26:50,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:26:50,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:26:50,561 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-10-13 23:26:50,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:26:50,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693088787] [2024-10-13 23:26:50,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693088787] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:26:50,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:26:50,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:26:50,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74929508] [2024-10-13 23:26:50,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:26:50,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:26:50,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:26:50,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:26:50,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:26:50,563 INFO L87 Difference]: Start difference. First operand 2075 states and 2473 transitions. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:26:51,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:26:51,188 INFO L93 Difference]: Finished difference Result 4889 states and 5876 transitions. [2024-10-13 23:26:51,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:26:51,188 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 241 [2024-10-13 23:26:51,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:26:51,195 INFO L225 Difference]: With dead ends: 4889 [2024-10-13 23:26:51,195 INFO L226 Difference]: Without dead ends: 2815 [2024-10-13 23:26:51,197 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:26:51,198 INFO L432 NwaCegarLoop]: 363 mSDtfsCounter, 142 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-13 23:26:51,198 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 384 Invalid, 675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-13 23:26:51,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2815 states. [2024-10-13 23:26:51,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2815 to 2810. [2024-10-13 23:26:51,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2810 states, 2809 states have (on average 1.1737273050907797) internal successors, (3297), 2809 states have internal predecessors, (3297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:26:51,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2810 states to 2810 states and 3297 transitions. [2024-10-13 23:26:51,227 INFO L78 Accepts]: Start accepts. Automaton has 2810 states and 3297 transitions. Word has length 241 [2024-10-13 23:26:51,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:26:51,227 INFO L471 AbstractCegarLoop]: Abstraction has 2810 states and 3297 transitions. [2024-10-13 23:26:51,227 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:26:51,227 INFO L276 IsEmpty]: Start isEmpty. Operand 2810 states and 3297 transitions. [2024-10-13 23:26:51,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2024-10-13 23:26:51,230 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:26:51,230 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:26:51,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-13 23:26:51,231 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:26:51,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:26:51,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1311249506, now seen corresponding path program 1 times [2024-10-13 23:26:51,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:26:51,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218334486] [2024-10-13 23:26:51,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:26:51,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:26:51,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:26:51,460 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 202 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 23:26:51,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:26:51,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218334486] [2024-10-13 23:26:51,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218334486] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:26:51,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:26:51,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:26:51,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596072662] [2024-10-13 23:26:51,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:26:51,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 23:26:51,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:26:51,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 23:26:51,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 23:26:51,462 INFO L87 Difference]: Start difference. First operand 2810 states and 3297 transitions. Second operand has 4 states, 4 states have (on average 70.0) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:26:52,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:26:52,450 INFO L93 Difference]: Finished difference Result 8955 states and 10587 transitions. [2024-10-13 23:26:52,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 23:26:52,451 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 70.0) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 280 [2024-10-13 23:26:52,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:26:52,465 INFO L225 Difference]: With dead ends: 8955 [2024-10-13 23:26:52,466 INFO L226 Difference]: Without dead ends: 6146 [2024-10-13 23:26:52,469 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 23:26:52,470 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 256 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 1102 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 1262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 1102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-13 23:26:52,471 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 83 Invalid, 1262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 1102 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-13 23:26:52,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6146 states. [2024-10-13 23:26:52,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6146 to 5960. [2024-10-13 23:26:52,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5960 states, 5959 states have (on average 1.1758684343010573) internal successors, (7007), 5959 states have internal predecessors, (7007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:26:52,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5960 states to 5960 states and 7007 transitions. [2024-10-13 23:26:52,544 INFO L78 Accepts]: Start accepts. Automaton has 5960 states and 7007 transitions. Word has length 280 [2024-10-13 23:26:52,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:26:52,544 INFO L471 AbstractCegarLoop]: Abstraction has 5960 states and 7007 transitions. [2024-10-13 23:26:52,545 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.0) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:26:52,545 INFO L276 IsEmpty]: Start isEmpty. Operand 5960 states and 7007 transitions. [2024-10-13 23:26:52,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2024-10-13 23:26:52,550 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:26:52,550 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:26:52,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-13 23:26:52,551 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:26:52,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:26:52,551 INFO L85 PathProgramCache]: Analyzing trace with hash -2043282544, now seen corresponding path program 1 times [2024-10-13 23:26:52,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:26:52,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959164225] [2024-10-13 23:26:52,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:26:52,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:26:52,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:26:52,726 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2024-10-13 23:26:52,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:26:52,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959164225] [2024-10-13 23:26:52,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959164225] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:26:52,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:26:52,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:26:52,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855335720] [2024-10-13 23:26:52,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:26:52,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:26:52,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:26:52,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:26:52,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:26:52,730 INFO L87 Difference]: Start difference. First operand 5960 states and 7007 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:26:53,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:26:53,264 INFO L93 Difference]: Finished difference Result 12098 states and 14258 transitions. [2024-10-13 23:26:53,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:26:53,265 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 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 318 [2024-10-13 23:26:53,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:26:53,282 INFO L225 Difference]: With dead ends: 12098 [2024-10-13 23:26:53,282 INFO L226 Difference]: Without dead ends: 7247 [2024-10-13 23:26:53,287 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:26:53,288 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 167 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-13 23:26:53,288 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 144 Invalid, 558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-13 23:26:53,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7247 states. [2024-10-13 23:26:53,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7247 to 4663. [2024-10-13 23:26:53,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4663 states, 4662 states have (on average 1.17996567996568) internal successors, (5501), 4662 states have internal predecessors, (5501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:26:53,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4663 states to 4663 states and 5501 transitions. [2024-10-13 23:26:53,345 INFO L78 Accepts]: Start accepts. Automaton has 4663 states and 5501 transitions. Word has length 318 [2024-10-13 23:26:53,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:26:53,345 INFO L471 AbstractCegarLoop]: Abstraction has 4663 states and 5501 transitions. [2024-10-13 23:26:53,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:26:53,346 INFO L276 IsEmpty]: Start isEmpty. Operand 4663 states and 5501 transitions. [2024-10-13 23:26:53,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2024-10-13 23:26:53,350 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:26:53,351 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:26:53,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-13 23:26:53,351 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:26:53,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:26:53,351 INFO L85 PathProgramCache]: Analyzing trace with hash -757254023, now seen corresponding path program 1 times [2024-10-13 23:26:53,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:26:53,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797395176] [2024-10-13 23:26:53,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:26:53,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:26:53,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:26:53,790 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 171 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 23:26:53,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:26:53,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797395176] [2024-10-13 23:26:53,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797395176] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 23:26:53,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384017603] [2024-10-13 23:26:53,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:26:53,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 23:26:53,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 23:26:53,795 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 23:26:53,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 23:26:53,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:26:53,932 INFO L255 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-13 23:26:53,942 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 23:26:55,387 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 171 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 23:26:55,387 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 23:26:56,887 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 171 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 23:26:56,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384017603] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 23:26:56,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 23:26:56,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-10-13 23:26:56,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780995586] [2024-10-13 23:26:56,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 23:26:56,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-13 23:26:56,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:26:56,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-13 23:26:56,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-10-13 23:26:56,890 INFO L87 Difference]: Start difference. First operand 4663 states and 5501 transitions. Second operand has 8 states, 8 states have (on average 72.25) internal successors, (578), 7 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:26:59,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:26:59,138 INFO L93 Difference]: Finished difference Result 12138 states and 14291 transitions. [2024-10-13 23:26:59,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-13 23:26:59,138 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 72.25) internal successors, (578), 7 states have internal predecessors, (578), 0 states have call successors, (0), 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 327 [2024-10-13 23:26:59,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:26:59,154 INFO L225 Difference]: With dead ends: 12138 [2024-10-13 23:26:59,154 INFO L226 Difference]: Without dead ends: 7844 [2024-10-13 23:26:59,157 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 663 GetRequests, 650 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2024-10-13 23:26:59,157 INFO L432 NwaCegarLoop]: 108 mSDtfsCounter, 897 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 2791 mSolverCounterSat, 354 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 897 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 3145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 354 IncrementalHoareTripleChecker+Valid, 2791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-10-13 23:26:59,158 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [897 Valid, 180 Invalid, 3145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [354 Valid, 2791 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-10-13 23:26:59,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7844 states. [2024-10-13 23:26:59,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7844 to 4476. [2024-10-13 23:26:59,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4476 states, 4475 states have (on average 1.1736312849162012) internal successors, (5252), 4475 states have internal predecessors, (5252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:26:59,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4476 states to 4476 states and 5252 transitions. [2024-10-13 23:26:59,206 INFO L78 Accepts]: Start accepts. Automaton has 4476 states and 5252 transitions. Word has length 327 [2024-10-13 23:26:59,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:26:59,206 INFO L471 AbstractCegarLoop]: Abstraction has 4476 states and 5252 transitions. [2024-10-13 23:26:59,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 72.25) internal successors, (578), 7 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:26:59,207 INFO L276 IsEmpty]: Start isEmpty. Operand 4476 states and 5252 transitions. [2024-10-13 23:26:59,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2024-10-13 23:26:59,211 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:26:59,212 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-13 23:26:59,226 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-13 23:26:59,412 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,SelfDestructingSolverStorable10 [2024-10-13 23:26:59,413 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:26:59,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:26:59,414 INFO L85 PathProgramCache]: Analyzing trace with hash 476714590, now seen corresponding path program 1 times [2024-10-13 23:26:59,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:26:59,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493204733] [2024-10-13 23:26:59,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:26:59,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:26:59,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:27:00,374 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 188 proven. 148 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-10-13 23:27:00,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:27:00,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493204733] [2024-10-13 23:27:00,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493204733] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 23:27:00,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090071551] [2024-10-13 23:27:00,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:27:00,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 23:27:00,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 23:27:00,376 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 23:27:00,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 23:27:00,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:27:00,482 INFO L255 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-13 23:27:00,488 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 23:27:00,584 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 336 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-10-13 23:27:00,585 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 23:27:00,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090071551] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:27:00,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 23:27:00,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2024-10-13 23:27:00,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102676094] [2024-10-13 23:27:00,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:27:00,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:27:00,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:27:00,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:27:00,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-10-13 23:27:00,587 INFO L87 Difference]: Start difference. First operand 4476 states and 5252 transitions. Second operand has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:27:01,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:27:01,169 INFO L93 Difference]: Finished difference Result 8777 states and 10329 transitions. [2024-10-13 23:27:01,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:27:01,170 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 347 [2024-10-13 23:27:01,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:27:01,177 INFO L225 Difference]: With dead ends: 8777 [2024-10-13 23:27:01,177 INFO L226 Difference]: Without dead ends: 4670 [2024-10-13 23:27:01,180 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 346 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-10-13 23:27:01,180 INFO L432 NwaCegarLoop]: 304 mSDtfsCounter, 103 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-13 23:27:01,180 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 321 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-13 23:27:01,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4670 states. [2024-10-13 23:27:01,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4670 to 4476. [2024-10-13 23:27:01,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4476 states, 4475 states have (on average 1.1427932960893854) internal successors, (5114), 4475 states have internal predecessors, (5114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:27:01,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4476 states to 4476 states and 5114 transitions. [2024-10-13 23:27:01,215 INFO L78 Accepts]: Start accepts. Automaton has 4476 states and 5114 transitions. Word has length 347 [2024-10-13 23:27:01,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:27:01,215 INFO L471 AbstractCegarLoop]: Abstraction has 4476 states and 5114 transitions. [2024-10-13 23:27:01,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:27:01,216 INFO L276 IsEmpty]: Start isEmpty. Operand 4476 states and 5114 transitions. [2024-10-13 23:27:01,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2024-10-13 23:27:01,221 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:27:01,221 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:27:01,238 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-13 23:27:01,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-13 23:27:01,422 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:27:01,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:27:01,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1282069228, now seen corresponding path program 1 times [2024-10-13 23:27:01,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:27:01,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248923159] [2024-10-13 23:27:01,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:27:01,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:27:01,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:27:01,652 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 227 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 23:27:01,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:27:01,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248923159] [2024-10-13 23:27:01,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248923159] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:27:01,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:27:01,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:27:01,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253641846] [2024-10-13 23:27:01,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:27:01,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:27:01,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:27:01,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:27:01,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:27:01,654 INFO L87 Difference]: Start difference. First operand 4476 states and 5114 transitions. Second operand has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:27:02,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:27:02,293 INFO L93 Difference]: Finished difference Result 11712 states and 13472 transitions. [2024-10-13 23:27:02,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:27:02,294 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 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 355 [2024-10-13 23:27:02,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:27:02,302 INFO L225 Difference]: With dead ends: 11712 [2024-10-13 23:27:02,303 INFO L226 Difference]: Without dead ends: 7605 [2024-10-13 23:27:02,306 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:27:02,307 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 56 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-13 23:27:02,307 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 68 Invalid, 684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-13 23:27:02,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7605 states. [2024-10-13 23:27:02,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7605 to 7600. [2024-10-13 23:27:02,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7600 states, 7599 states have (on average 1.137781287011449) internal successors, (8646), 7599 states have internal predecessors, (8646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:27:02,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7600 states to 7600 states and 8646 transitions. [2024-10-13 23:27:02,424 INFO L78 Accepts]: Start accepts. Automaton has 7600 states and 8646 transitions. Word has length 355 [2024-10-13 23:27:02,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:27:02,425 INFO L471 AbstractCegarLoop]: Abstraction has 7600 states and 8646 transitions. [2024-10-13 23:27:02,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:27:02,425 INFO L276 IsEmpty]: Start isEmpty. Operand 7600 states and 8646 transitions. [2024-10-13 23:27:02,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2024-10-13 23:27:02,429 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:27:02,430 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:27:02,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-13 23:27:02,430 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:27:02,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:27:02,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1546401200, now seen corresponding path program 1 times [2024-10-13 23:27:02,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:27:02,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363481045] [2024-10-13 23:27:02,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:27:02,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:27:02,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:27:03,033 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 103 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2024-10-13 23:27:03,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:27:03,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363481045] [2024-10-13 23:27:03,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363481045] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 23:27:03,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360966306] [2024-10-13 23:27:03,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:27:03,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 23:27:03,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 23:27:03,035 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) [2024-10-13 23:27:03,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 23:27:03,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:27:03,141 INFO L255 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-13 23:27:03,145 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 23:27:03,618 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 103 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2024-10-13 23:27:03,622 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 23:27:04,681 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2024-10-13 23:27:04,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360966306] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-13 23:27:04,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-13 23:27:04,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2024-10-13 23:27:04,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430592141] [2024-10-13 23:27:04,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:27:04,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:27:04,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:27:04,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:27:04,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-10-13 23:27:04,691 INFO L87 Difference]: Start difference. First operand 7600 states and 8646 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:27:05,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:27:05,416 INFO L93 Difference]: Finished difference Result 17035 states and 19445 transitions. [2024-10-13 23:27:05,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:27:05,417 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 358 [2024-10-13 23:27:05,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:27:05,428 INFO L225 Difference]: With dead ends: 17035 [2024-10-13 23:27:05,428 INFO L226 Difference]: Without dead ends: 9804 [2024-10-13 23:27:05,434 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 717 GetRequests, 713 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-10-13 23:27:05,434 INFO L432 NwaCegarLoop]: 100 mSDtfsCounter, 173 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-13 23:27:05,434 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 117 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-13 23:27:05,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9804 states. [2024-10-13 23:27:05,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9804 to 7963. [2024-10-13 23:27:05,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7963 states, 7962 states have (on average 1.1312484300427028) internal successors, (9007), 7962 states have internal predecessors, (9007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:27:05,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7963 states to 7963 states and 9007 transitions. [2024-10-13 23:27:05,505 INFO L78 Accepts]: Start accepts. Automaton has 7963 states and 9007 transitions. Word has length 358 [2024-10-13 23:27:05,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:27:05,505 INFO L471 AbstractCegarLoop]: Abstraction has 7963 states and 9007 transitions. [2024-10-13 23:27:05,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:27:05,506 INFO L276 IsEmpty]: Start isEmpty. Operand 7963 states and 9007 transitions. [2024-10-13 23:27:05,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2024-10-13 23:27:05,513 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:27:05,513 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:27:05,527 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-13 23:27:05,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 23:27:05,714 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:27:05,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:27:05,715 INFO L85 PathProgramCache]: Analyzing trace with hash 288525316, now seen corresponding path program 1 times [2024-10-13 23:27:05,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:27:05,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970391679] [2024-10-13 23:27:05,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:27:05,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:27:05,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:27:05,858 INFO L134 CoverageAnalysis]: Checked inductivity of 746 backedges. 486 proven. 0 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2024-10-13 23:27:05,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:27:05,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970391679] [2024-10-13 23:27:05,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970391679] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:27:05,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:27:05,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:27:05,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044458284] [2024-10-13 23:27:05,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:27:05,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:27:05,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:27:05,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:27:05,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:27:05,861 INFO L87 Difference]: Start difference. First operand 7963 states and 9007 transitions. Second operand has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:27:06,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:27:06,476 INFO L93 Difference]: Finished difference Result 17028 states and 19296 transitions. [2024-10-13 23:27:06,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:27:06,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 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 445 [2024-10-13 23:27:06,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:27:06,486 INFO L225 Difference]: With dead ends: 17028 [2024-10-13 23:27:06,486 INFO L226 Difference]: Without dead ends: 9434 [2024-10-13 23:27:06,491 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:27:06,491 INFO L432 NwaCegarLoop]: 301 mSDtfsCounter, 101 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-13 23:27:06,491 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 319 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-13 23:27:06,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9434 states. [2024-10-13 23:27:06,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9434 to 7586. [2024-10-13 23:27:06,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7586 states, 7585 states have (on average 1.1198417930125246) internal successors, (8494), 7585 states have internal predecessors, (8494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:27:06,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7586 states to 7586 states and 8494 transitions. [2024-10-13 23:27:06,548 INFO L78 Accepts]: Start accepts. Automaton has 7586 states and 8494 transitions. Word has length 445 [2024-10-13 23:27:06,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:27:06,548 INFO L471 AbstractCegarLoop]: Abstraction has 7586 states and 8494 transitions. [2024-10-13 23:27:06,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:27:06,549 INFO L276 IsEmpty]: Start isEmpty. Operand 7586 states and 8494 transitions. [2024-10-13 23:27:06,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2024-10-13 23:27:06,557 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:27:06,557 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:27:06,557 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-13 23:27:06,557 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:27:06,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:27:06,558 INFO L85 PathProgramCache]: Analyzing trace with hash 2147392072, now seen corresponding path program 1 times [2024-10-13 23:27:06,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:27:06,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791872931] [2024-10-13 23:27:06,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:27:06,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:27:06,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:27:06,933 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 488 proven. 0 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2024-10-13 23:27:06,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:27:06,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791872931] [2024-10-13 23:27:06,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791872931] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:27:06,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:27:06,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:27:06,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930527826] [2024-10-13 23:27:06,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:27:06,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:27:06,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:27:06,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:27:06,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:27:06,935 INFO L87 Difference]: Start difference. First operand 7586 states and 8494 transitions. Second operand has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:27:07,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:27:07,468 INFO L93 Difference]: Finished difference Result 15358 states and 17217 transitions. [2024-10-13 23:27:07,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:27:07,469 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 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 479 [2024-10-13 23:27:07,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:27:07,478 INFO L225 Difference]: With dead ends: 15358 [2024-10-13 23:27:07,478 INFO L226 Difference]: Without dead ends: 7957 [2024-10-13 23:27:07,483 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:27:07,484 INFO L432 NwaCegarLoop]: 151 mSDtfsCounter, 88 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-13 23:27:07,484 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 170 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-13 23:27:07,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7957 states. [2024-10-13 23:27:07,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7957 to 7954. [2024-10-13 23:27:07,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7954 states, 7953 states have (on average 1.1080095561423362) internal successors, (8812), 7953 states have internal predecessors, (8812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:27:07,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7954 states to 7954 states and 8812 transitions. [2024-10-13 23:27:07,557 INFO L78 Accepts]: Start accepts. Automaton has 7954 states and 8812 transitions. Word has length 479 [2024-10-13 23:27:07,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:27:07,558 INFO L471 AbstractCegarLoop]: Abstraction has 7954 states and 8812 transitions. [2024-10-13 23:27:07,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:27:07,558 INFO L276 IsEmpty]: Start isEmpty. Operand 7954 states and 8812 transitions. [2024-10-13 23:27:07,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2024-10-13 23:27:07,566 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:27:07,566 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:27:07,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-13 23:27:07,567 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:27:07,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:27:07,567 INFO L85 PathProgramCache]: Analyzing trace with hash 425891575, now seen corresponding path program 1 times [2024-10-13 23:27:07,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:27:07,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282156802] [2024-10-13 23:27:07,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:27:07,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:27:07,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:27:07,976 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 488 proven. 0 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2024-10-13 23:27:07,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:27:07,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282156802] [2024-10-13 23:27:07,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282156802] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:27:07,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:27:07,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 23:27:07,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042268953] [2024-10-13 23:27:07,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:27:07,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 23:27:07,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:27:07,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 23:27:07,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 23:27:07,978 INFO L87 Difference]: Start difference. First operand 7954 states and 8812 transitions. Second operand has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:27:08,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:27:08,909 INFO L93 Difference]: Finished difference Result 17378 states and 19316 transitions. [2024-10-13 23:27:08,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 23:27:08,909 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 0 states have call successors, (0), 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 480 [2024-10-13 23:27:08,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:27:08,921 INFO L225 Difference]: With dead ends: 17378 [2024-10-13 23:27:08,921 INFO L226 Difference]: Without dead ends: 9793 [2024-10-13 23:27:08,927 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 23:27:08,928 INFO L432 NwaCegarLoop]: 125 mSDtfsCounter, 283 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 1042 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 1152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1042 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-13 23:27:08,928 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 164 Invalid, 1152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1042 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-13 23:27:08,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9793 states. [2024-10-13 23:27:08,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9793 to 8873. [2024-10-13 23:27:08,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8873 states, 8872 states have (on average 1.1000901713255185) internal successors, (9760), 8872 states have internal predecessors, (9760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:27:08,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8873 states to 8873 states and 9760 transitions. [2024-10-13 23:27:08,999 INFO L78 Accepts]: Start accepts. Automaton has 8873 states and 9760 transitions. Word has length 480 [2024-10-13 23:27:09,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:27:09,000 INFO L471 AbstractCegarLoop]: Abstraction has 8873 states and 9760 transitions. [2024-10-13 23:27:09,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:27:09,000 INFO L276 IsEmpty]: Start isEmpty. Operand 8873 states and 9760 transitions. [2024-10-13 23:27:09,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2024-10-13 23:27:09,009 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:27:09,009 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:27:09,009 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-13 23:27:09,009 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:27:09,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:27:09,010 INFO L85 PathProgramCache]: Analyzing trace with hash 539324632, now seen corresponding path program 1 times [2024-10-13 23:27:09,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:27:09,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475875830] [2024-10-13 23:27:09,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:27:09,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:27:09,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:27:09,743 INFO L134 CoverageAnalysis]: Checked inductivity of 835 backedges. 578 proven. 133 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-10-13 23:27:09,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:27:09,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475875830] [2024-10-13 23:27:09,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475875830] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 23:27:09,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807433976] [2024-10-13 23:27:09,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:27:09,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 23:27:09,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 23:27:09,746 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) [2024-10-13 23:27:09,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-13 23:27:09,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:27:09,888 INFO L255 TraceCheckSpWp]: Trace formula consists of 677 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-13 23:27:09,892 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 23:27:10,002 INFO L134 CoverageAnalysis]: Checked inductivity of 835 backedges. 659 proven. 0 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2024-10-13 23:27:10,002 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 23:27:10,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [807433976] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:27:10,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 23:27:10,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-10-13 23:27:10,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975735839] [2024-10-13 23:27:10,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:27:10,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:27:10,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:27:10,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:27:10,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-10-13 23:27:10,004 INFO L87 Difference]: Start difference. First operand 8873 states and 9760 transitions. Second operand has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:27:10,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:27:10,536 INFO L93 Difference]: Finished difference Result 18304 states and 20182 transitions. [2024-10-13 23:27:10,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:27:10,537 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 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 517 [2024-10-13 23:27:10,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:27:10,545 INFO L225 Difference]: With dead ends: 18304 [2024-10-13 23:27:10,545 INFO L226 Difference]: Without dead ends: 9800 [2024-10-13 23:27:10,551 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 522 GetRequests, 517 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-10-13 23:27:10,551 INFO L432 NwaCegarLoop]: 308 mSDtfsCounter, 93 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-13 23:27:10,552 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 326 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-13 23:27:10,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9800 states. [2024-10-13 23:27:10,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9800 to 9609. [2024-10-13 23:27:10,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9609 states, 9608 states have (on average 1.0999167360532889) internal successors, (10568), 9608 states have internal predecessors, (10568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:27:10,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9609 states to 9609 states and 10568 transitions. [2024-10-13 23:27:10,624 INFO L78 Accepts]: Start accepts. Automaton has 9609 states and 10568 transitions. Word has length 517 [2024-10-13 23:27:10,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:27:10,624 INFO L471 AbstractCegarLoop]: Abstraction has 9609 states and 10568 transitions. [2024-10-13 23:27:10,624 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:27:10,625 INFO L276 IsEmpty]: Start isEmpty. Operand 9609 states and 10568 transitions. [2024-10-13 23:27:10,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 572 [2024-10-13 23:27:10,633 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:27:10,634 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:27:10,647 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-13 23:27:10,837 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 [2024-10-13 23:27:10,838 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:27:10,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:27:10,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1689724126, now seen corresponding path program 1 times [2024-10-13 23:27:10,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:27:10,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746103158] [2024-10-13 23:27:10,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:27:10,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:27:10,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:27:11,403 INFO L134 CoverageAnalysis]: Checked inductivity of 853 backedges. 659 proven. 0 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2024-10-13 23:27:11,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:27:11,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746103158] [2024-10-13 23:27:11,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746103158] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:27:11,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:27:11,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:27:11,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516134718] [2024-10-13 23:27:11,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:27:11,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:27:11,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:27:11,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:27:11,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:27:11,405 INFO L87 Difference]: Start difference. First operand 9609 states and 10568 transitions. Second operand has 3 states, 3 states have (on average 126.33333333333333) internal successors, (379), 3 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:27:12,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:27:12,003 INFO L93 Difference]: Finished difference Result 20508 states and 22626 transitions. [2024-10-13 23:27:12,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:27:12,004 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 126.33333333333333) internal successors, (379), 3 states have internal predecessors, (379), 0 states have call successors, (0), 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 571 [2024-10-13 23:27:12,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:27:12,012 INFO L225 Difference]: With dead ends: 20508 [2024-10-13 23:27:12,013 INFO L226 Difference]: Without dead ends: 11268 [2024-10-13 23:27:12,019 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:27:12,019 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 119 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-13 23:27:12,019 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 71 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-13 23:27:12,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11268 states. [2024-10-13 23:27:12,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11268 to 9425. [2024-10-13 23:27:12,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9425 states, 9424 states have (on average 1.0980475382003396) internal successors, (10348), 9424 states have internal predecessors, (10348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:27:12,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9425 states to 9425 states and 10348 transitions. [2024-10-13 23:27:12,094 INFO L78 Accepts]: Start accepts. Automaton has 9425 states and 10348 transitions. Word has length 571 [2024-10-13 23:27:12,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:27:12,095 INFO L471 AbstractCegarLoop]: Abstraction has 9425 states and 10348 transitions. [2024-10-13 23:27:12,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.33333333333333) internal successors, (379), 3 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:27:12,095 INFO L276 IsEmpty]: Start isEmpty. Operand 9425 states and 10348 transitions. [2024-10-13 23:27:12,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 682 [2024-10-13 23:27:12,104 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:27:12,104 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 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] [2024-10-13 23:27:12,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-13 23:27:12,104 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:27:12,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:27:12,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1916743252, now seen corresponding path program 1 times [2024-10-13 23:27:12,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:27:12,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029542931] [2024-10-13 23:27:12,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:27:12,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:27:12,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:27:12,560 INFO L134 CoverageAnalysis]: Checked inductivity of 1718 backedges. 1189 proven. 0 refuted. 0 times theorem prover too weak. 529 trivial. 0 not checked. [2024-10-13 23:27:12,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:27:12,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029542931] [2024-10-13 23:27:12,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029542931] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:27:12,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:27:12,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:27:12,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415197661] [2024-10-13 23:27:12,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:27:12,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 23:27:12,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:27:12,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 23:27:12,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 23:27:12,564 INFO L87 Difference]: Start difference. First operand 9425 states and 10348 transitions. Second operand has 4 states, 4 states have (on average 89.0) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:27:13,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:27:13,442 INFO L93 Difference]: Finished difference Result 20332 states and 22349 transitions. [2024-10-13 23:27:13,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 23:27:13,442 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 89.0) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 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 681 [2024-10-13 23:27:13,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:27:13,451 INFO L225 Difference]: With dead ends: 20332 [2024-10-13 23:27:13,451 INFO L226 Difference]: Without dead ends: 11091 [2024-10-13 23:27:13,456 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 23:27:13,457 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 230 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 1044 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 1160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-13 23:27:13,457 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 63 Invalid, 1160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1044 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-13 23:27:13,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11091 states. [2024-10-13 23:27:13,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11091 to 8505. [2024-10-13 23:27:13,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8505 states, 8504 states have (on average 1.0979539040451551) internal successors, (9337), 8504 states have internal predecessors, (9337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:27:13,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8505 states to 8505 states and 9337 transitions. [2024-10-13 23:27:13,523 INFO L78 Accepts]: Start accepts. Automaton has 8505 states and 9337 transitions. Word has length 681 [2024-10-13 23:27:13,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:27:13,524 INFO L471 AbstractCegarLoop]: Abstraction has 8505 states and 9337 transitions. [2024-10-13 23:27:13,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.0) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:27:13,524 INFO L276 IsEmpty]: Start isEmpty. Operand 8505 states and 9337 transitions. [2024-10-13 23:27:13,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 774 [2024-10-13 23:27:13,531 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:27:13,532 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:27:13,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-13 23:27:13,532 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:27:13,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:27:13,532 INFO L85 PathProgramCache]: Analyzing trace with hash -449601655, now seen corresponding path program 1 times [2024-10-13 23:27:13,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:27:13,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515463281] [2024-10-13 23:27:13,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:27:13,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:27:13,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:27:14,070 INFO L134 CoverageAnalysis]: Checked inductivity of 2242 backedges. 1055 proven. 0 refuted. 0 times theorem prover too weak. 1187 trivial. 0 not checked. [2024-10-13 23:27:14,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:27:14,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515463281] [2024-10-13 23:27:14,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515463281] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:27:14,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:27:14,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:27:14,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892278764] [2024-10-13 23:27:14,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:27:14,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 23:27:14,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:27:14,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 23:27:14,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 23:27:14,072 INFO L87 Difference]: Start difference. First operand 8505 states and 9337 transitions. Second operand has 4 states, 4 states have (on average 85.75) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:27:15,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:27:15,020 INFO L93 Difference]: Finished difference Result 22724 states and 25043 transitions. [2024-10-13 23:27:15,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 23:27:15,021 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 85.75) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 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 773 [2024-10-13 23:27:15,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:27:15,033 INFO L225 Difference]: With dead ends: 22724 [2024-10-13 23:27:15,033 INFO L226 Difference]: Without dead ends: 14588 [2024-10-13 23:27:15,043 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 23:27:15,044 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 225 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 1017 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 1226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 1017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-13 23:27:15,045 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 100 Invalid, 1226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 1017 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-13 23:27:15,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14588 states. [2024-10-13 23:27:15,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14588 to 13664. [2024-10-13 23:27:15,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13664 states, 13663 states have (on average 1.0880480128815049) internal successors, (14866), 13663 states have internal predecessors, (14866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:27:15,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13664 states to 13664 states and 14866 transitions. [2024-10-13 23:27:15,191 INFO L78 Accepts]: Start accepts. Automaton has 13664 states and 14866 transitions. Word has length 773 [2024-10-13 23:27:15,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:27:15,191 INFO L471 AbstractCegarLoop]: Abstraction has 13664 states and 14866 transitions. [2024-10-13 23:27:15,191 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.75) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:27:15,191 INFO L276 IsEmpty]: Start isEmpty. Operand 13664 states and 14866 transitions. [2024-10-13 23:27:15,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 788 [2024-10-13 23:27:15,202 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:27:15,204 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:27:15,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-13 23:27:15,204 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:27:15,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:27:15,204 INFO L85 PathProgramCache]: Analyzing trace with hash 592201254, now seen corresponding path program 1 times [2024-10-13 23:27:15,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:27:15,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353840070] [2024-10-13 23:27:15,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:27:15,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:27:15,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:27:16,482 INFO L134 CoverageAnalysis]: Checked inductivity of 2362 backedges. 1107 proven. 336 refuted. 0 times theorem prover too weak. 919 trivial. 0 not checked. [2024-10-13 23:27:16,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:27:16,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353840070] [2024-10-13 23:27:16,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353840070] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 23:27:16,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626314568] [2024-10-13 23:27:16,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:27:16,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 23:27:16,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 23:27:16,485 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) [2024-10-13 23:27:16,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-13 23:27:16,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:27:16,681 INFO L255 TraceCheckSpWp]: Trace formula consists of 1022 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 23:27:16,687 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 23:27:17,413 INFO L134 CoverageAnalysis]: Checked inductivity of 2362 backedges. 1429 proven. 380 refuted. 0 times theorem prover too weak. 553 trivial. 0 not checked. [2024-10-13 23:27:17,413 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 23:27:18,632 INFO L134 CoverageAnalysis]: Checked inductivity of 2362 backedges. 1809 proven. 0 refuted. 0 times theorem prover too weak. 553 trivial. 0 not checked. [2024-10-13 23:27:18,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626314568] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-13 23:27:18,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-13 23:27:18,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 11 [2024-10-13 23:27:18,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755709102] [2024-10-13 23:27:18,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:27:18,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 23:27:18,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:27:18,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 23:27:18,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-10-13 23:27:18,634 INFO L87 Difference]: Start difference. First operand 13664 states and 14866 transitions. Second operand has 5 states, 5 states have (on average 87.6) internal successors, (438), 4 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:27:19,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:27:19,810 INFO L93 Difference]: Finished difference Result 32854 states and 35804 transitions. [2024-10-13 23:27:19,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 23:27:19,810 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 87.6) internal successors, (438), 4 states have internal predecessors, (438), 0 states have call successors, (0), 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 787 [2024-10-13 23:27:19,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:27:19,826 INFO L225 Difference]: With dead ends: 32854 [2024-10-13 23:27:19,826 INFO L226 Difference]: Without dead ends: 19559 [2024-10-13 23:27:19,833 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1578 GetRequests, 1568 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-10-13 23:27:19,834 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 244 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 1232 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 1431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 1232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-13 23:27:19,834 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 63 Invalid, 1431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 1232 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-13 23:27:19,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19559 states. [2024-10-13 23:27:19,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19559 to 17164. [2024-10-13 23:27:19,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17164 states, 17163 states have (on average 1.0907184058730992) internal successors, (18720), 17163 states have internal predecessors, (18720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:27:19,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17164 states to 17164 states and 18720 transitions. [2024-10-13 23:27:19,972 INFO L78 Accepts]: Start accepts. Automaton has 17164 states and 18720 transitions. Word has length 787 [2024-10-13 23:27:19,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:27:19,972 INFO L471 AbstractCegarLoop]: Abstraction has 17164 states and 18720 transitions. [2024-10-13 23:27:19,972 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 87.6) internal successors, (438), 4 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:27:19,973 INFO L276 IsEmpty]: Start isEmpty. Operand 17164 states and 18720 transitions. [2024-10-13 23:27:19,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 886 [2024-10-13 23:27:19,985 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:27:19,986 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:27:19,999 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-13 23:27:20,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-10-13 23:27:20,187 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:27:20,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:27:20,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1435390705, now seen corresponding path program 1 times [2024-10-13 23:27:20,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:27:20,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465007909] [2024-10-13 23:27:20,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:27:20,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:27:20,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:27:20,637 INFO L134 CoverageAnalysis]: Checked inductivity of 2967 backedges. 1261 proven. 0 refuted. 0 times theorem prover too weak. 1706 trivial. 0 not checked. [2024-10-13 23:27:20,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:27:20,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465007909] [2024-10-13 23:27:20,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465007909] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:27:20,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:27:20,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:27:20,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393933787] [2024-10-13 23:27:20,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:27:20,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:27:20,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:27:20,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:27:20,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:27:20,640 INFO L87 Difference]: Start difference. First operand 17164 states and 18720 transitions. Second operand has 3 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:27:21,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:27:21,203 INFO L93 Difference]: Finished difference Result 36911 states and 40336 transitions. [2024-10-13 23:27:21,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:27:21,204 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 885 [2024-10-13 23:27:21,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:27:21,220 INFO L225 Difference]: With dead ends: 36911 [2024-10-13 23:27:21,220 INFO L226 Difference]: Without dead ends: 20116 [2024-10-13 23:27:21,230 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:27:21,231 INFO L432 NwaCegarLoop]: 112 mSDtfsCounter, 127 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-13 23:27:21,231 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 130 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-13 23:27:21,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20116 states. [2024-10-13 23:27:21,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20116 to 18823. [2024-10-13 23:27:21,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18823 states, 18822 states have (on average 1.091063648921475) internal successors, (20536), 18822 states have internal predecessors, (20536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:27:21,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18823 states to 18823 states and 20536 transitions. [2024-10-13 23:27:21,371 INFO L78 Accepts]: Start accepts. Automaton has 18823 states and 20536 transitions. Word has length 885 [2024-10-13 23:27:21,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:27:21,371 INFO L471 AbstractCegarLoop]: Abstraction has 18823 states and 20536 transitions. [2024-10-13 23:27:21,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:27:21,371 INFO L276 IsEmpty]: Start isEmpty. Operand 18823 states and 20536 transitions. [2024-10-13 23:27:21,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 896 [2024-10-13 23:27:21,385 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:27:21,385 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:27:21,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-13 23:27:21,386 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:27:21,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:27:21,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1137590584, now seen corresponding path program 1 times [2024-10-13 23:27:21,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:27:21,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178170039] [2024-10-13 23:27:21,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:27:21,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:27:21,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:27:21,908 INFO L134 CoverageAnalysis]: Checked inductivity of 2987 backedges. 1958 proven. 0 refuted. 0 times theorem prover too weak. 1029 trivial. 0 not checked. [2024-10-13 23:27:21,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:27:21,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178170039] [2024-10-13 23:27:21,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178170039] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:27:21,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:27:21,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:27:21,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215790614] [2024-10-13 23:27:21,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:27:21,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:27:21,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:27:21,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:27:21,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:27:21,910 INFO L87 Difference]: Start difference. First operand 18823 states and 20536 transitions. Second operand has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:27:22,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:27:22,570 INFO L93 Difference]: Finished difference Result 40035 states and 43743 transitions. [2024-10-13 23:27:22,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:27:22,571 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 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 895 [2024-10-13 23:27:22,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:27:22,590 INFO L225 Difference]: With dead ends: 40035 [2024-10-13 23:27:22,590 INFO L226 Difference]: Without dead ends: 21581 [2024-10-13 23:27:22,603 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:27:22,604 INFO L432 NwaCegarLoop]: 279 mSDtfsCounter, 75 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-13 23:27:22,604 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 297 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-13 23:27:22,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21581 states. [2024-10-13 23:27:22,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21581 to 13109. [2024-10-13 23:27:22,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13109 states, 13108 states have (on average 1.0817821177906621) internal successors, (14180), 13108 states have internal predecessors, (14180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:27:22,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13109 states to 13109 states and 14180 transitions. [2024-10-13 23:27:22,812 INFO L78 Accepts]: Start accepts. Automaton has 13109 states and 14180 transitions. Word has length 895 [2024-10-13 23:27:22,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:27:22,812 INFO L471 AbstractCegarLoop]: Abstraction has 13109 states and 14180 transitions. [2024-10-13 23:27:22,812 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:27:22,812 INFO L276 IsEmpty]: Start isEmpty. Operand 13109 states and 14180 transitions. [2024-10-13 23:27:22,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1119 [2024-10-13 23:27:22,823 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:27:22,823 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:27:22,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-13 23:27:22,824 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:27:22,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:27:22,824 INFO L85 PathProgramCache]: Analyzing trace with hash -298994276, now seen corresponding path program 1 times [2024-10-13 23:27:22,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:27:22,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218742831] [2024-10-13 23:27:22,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:27:22,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:27:22,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:27:24,462 INFO L134 CoverageAnalysis]: Checked inductivity of 4578 backedges. 2682 proven. 924 refuted. 0 times theorem prover too weak. 972 trivial. 0 not checked. [2024-10-13 23:27:24,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:27:24,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218742831] [2024-10-13 23:27:24,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218742831] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 23:27:24,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277920561] [2024-10-13 23:27:24,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:27:24,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 23:27:24,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 23:27:24,467 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) [2024-10-13 23:27:24,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-13 23:27:24,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:27:24,735 INFO L255 TraceCheckSpWp]: Trace formula consists of 1430 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-13 23:27:24,744 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 23:27:24,962 INFO L134 CoverageAnalysis]: Checked inductivity of 4578 backedges. 2903 proven. 0 refuted. 0 times theorem prover too weak. 1675 trivial. 0 not checked. [2024-10-13 23:27:24,962 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 23:27:24,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [277920561] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:27:24,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 23:27:24,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-10-13 23:27:24,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922859987] [2024-10-13 23:27:24,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:27:24,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:27:24,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:27:24,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:27:24,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-13 23:27:24,964 INFO L87 Difference]: Start difference. First operand 13109 states and 14180 transitions. Second operand has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:27:25,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:27:25,415 INFO L93 Difference]: Finished difference Result 18651 states and 20201 transitions. [2024-10-13 23:27:25,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:27:25,416 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 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 1118 [2024-10-13 23:27:25,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:27:25,416 INFO L225 Difference]: With dead ends: 18651 [2024-10-13 23:27:25,417 INFO L226 Difference]: Without dead ends: 0 [2024-10-13 23:27:25,422 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1126 GetRequests, 1121 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-13 23:27:25,422 INFO L432 NwaCegarLoop]: 263 mSDtfsCounter, 88 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-13 23:27:25,422 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 271 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-13 23:27:25,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-13 23:27:25,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-13 23:27:25,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:27:25,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-13 23:27:25,423 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1118 [2024-10-13 23:27:25,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:27:25,424 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-13 23:27:25,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:27:25,424 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-13 23:27:25,424 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-13 23:27:25,426 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-13 23:27:25,440 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-13 23:27:25,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 23:27:25,630 INFO L407 BasicCegarLoop]: Path program 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] [2024-10-13 23:27:25,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-10-13 23:27:35,986 WARN L286 SmtUtils]: Spent 10.35s on a formula simplification. DAG size of input: 383 DAG size of output: 410 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.or) [2024-10-13 23:27:37,534 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-13 23:27:37,556 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 11:27:37 BoogieIcfgContainer [2024-10-13 23:27:37,557 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-13 23:27:37,557 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-13 23:27:37,557 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-13 23:27:37,557 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-13 23:27:37,557 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:26:44" (3/4) ... [2024-10-13 23:27:37,559 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-13 23:27:37,578 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-10-13 23:27:37,579 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-10-13 23:27:37,579 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-13 23:27:37,580 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-13 23:27:37,710 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-13 23:27:37,712 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-13 23:27:37,712 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-13 23:27:37,713 INFO L158 Benchmark]: Toolchain (without parser) took 55231.18ms. Allocated memory was 180.4MB in the beginning and 2.0GB in the end (delta: 1.8GB). Free memory was 119.1MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 687.3MB. Max. memory is 16.1GB. [2024-10-13 23:27:37,713 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 180.4MB. Free memory was 142.5MB in the beginning and 142.4MB in the end (delta: 160.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-13 23:27:37,714 INFO L158 Benchmark]: CACSL2BoogieTranslator took 595.21ms. Allocated memory was 180.4MB in the beginning and 255.9MB in the end (delta: 75.5MB). Free memory was 118.7MB in the beginning and 217.0MB in the end (delta: -98.3MB). Peak memory consumption was 62.5MB. Max. memory is 16.1GB. [2024-10-13 23:27:37,714 INFO L158 Benchmark]: Boogie Procedure Inliner took 109.92ms. Allocated memory is still 255.9MB. Free memory was 217.0MB in the beginning and 199.2MB in the end (delta: 17.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-10-13 23:27:37,714 INFO L158 Benchmark]: Boogie Preprocessor took 149.48ms. Allocated memory is still 255.9MB. Free memory was 199.2MB in the beginning and 174.0MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-10-13 23:27:37,715 INFO L158 Benchmark]: RCFGBuilder took 1301.46ms. Allocated memory is still 255.9MB. Free memory was 174.0MB in the beginning and 134.4MB in the end (delta: 39.6MB). Peak memory consumption was 119.5MB. Max. memory is 16.1GB. [2024-10-13 23:27:37,715 INFO L158 Benchmark]: TraceAbstraction took 52914.32ms. Allocated memory was 255.9MB in the beginning and 2.0GB in the end (delta: 1.7GB). Free memory was 133.4MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2024-10-13 23:27:37,716 INFO L158 Benchmark]: Witness Printer took 155.46ms. Allocated memory is still 2.0GB. Free memory was 1.2GB in the beginning and 1.2GB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-10-13 23:27:37,718 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 180.4MB. Free memory was 142.5MB in the beginning and 142.4MB in the end (delta: 160.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 595.21ms. Allocated memory was 180.4MB in the beginning and 255.9MB in the end (delta: 75.5MB). Free memory was 118.7MB in the beginning and 217.0MB in the end (delta: -98.3MB). Peak memory consumption was 62.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 109.92ms. Allocated memory is still 255.9MB. Free memory was 217.0MB in the beginning and 199.2MB in the end (delta: 17.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Preprocessor took 149.48ms. Allocated memory is still 255.9MB. Free memory was 199.2MB in the beginning and 174.0MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1301.46ms. Allocated memory is still 255.9MB. Free memory was 174.0MB in the beginning and 134.4MB in the end (delta: 39.6MB). Peak memory consumption was 119.5MB. Max. memory is 16.1GB. * TraceAbstraction took 52914.32ms. Allocated memory was 255.9MB in the beginning and 2.0GB in the end (delta: 1.7GB). Free memory was 133.4MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. * Witness Printer took 155.46ms. Allocated memory is still 2.0GB. Free memory was 1.2GB in the beginning and 1.2GB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 178]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 221 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 40.9s, OverallIterations: 25, TraceHistogramMax: 11, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.2s, AutomataDifference: 18.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4349 SdHoareTripleChecker+Valid, 16.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4349 mSDsluCounter, 4924 SdHoareTripleChecker+Invalid, 14.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 575 mSDsCounter, 2702 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 17680 IncrementalHoareTripleChecker+Invalid, 20382 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2702 mSolverCounterUnsat, 4349 mSDtfsCounter, 17680 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5012 GetRequests, 4946 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18823occurred in iteration=23, InterpolantAutomatonStates: 91, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.6s AutomataMinimizationTime, 25 MinimizatonAttempts, 28859 StatesRemovedByMinimization, 21 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 16.7s InterpolantComputationTime, 14239 NumberOfCodeBlocks, 14239 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 15677 ConstructedInterpolants, 0 QuantifiedInterpolants, 52901 SizeOfPredicates, 8 NumberOfNonLiveVariables, 4515 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 34 InterpolantComputations, 24 PerfectInterpolantSequences, 32263/34519 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 1044]: Loop Invariant Derived loop invariant: ((((((((((((((((((((a29 <= 275) && (a25 == 12)) && (a4 == 0)) && (246 <= a29)) || (((((((((a25 == 12) && (307 <= a23)) && (((((long long) a23 + -600276) / 5) + 43) <= 0)) && (a3 == 1)) && (a29 <= 220)) && (a4 == 1)) && (a8 == 15)) && ((((((long long) a23 + -600276) / 5) + 43) < 0) || ((((long long) a23 + 4) % 5) == 0))) && (130 <= a29))) || ((((((((a25 == 11) && (((((long long) a23 + -600276) / 5) + 43) <= 0)) && (a3 == 1)) && (a4 == 1)) && (a8 == 15)) && (246 <= a29)) && ((((((long long) a23 + -600276) / 5) + 43) < 0) || ((((long long) a23 + 4) % 5) == 0))) && (0 <= ((long long) a23 + 42)))) || ((((a25 == 11) && (a29 <= 274)) && (((long long) 119992 + a23) <= 0)) && (a4 == 1))) || ((((a25 == 13) && (((long long) a23 + 43) <= 0)) && (a29 <= 274)) && (a4 == 1))) || (((((260 <= a29) && (a25 == 11)) && (a4 == 1)) && (a23 <= 312)) && (0 <= ((long long) a23 + 42)))) || (((((a25 == 13) && (a3 == 1)) && (((long long) a23 + 599772) <= 0)) && (a4 == 1)) && (a8 == 15))) || ((((((((a25 == 12) && (307 <= a23)) && (((((long long) a23 + -600276) / 5) + 43) <= 0)) && (a3 == 1)) && (a4 == 1)) && (a8 == 15)) && (246 <= a29)) && ((((((long long) a23 + -600276) / 5) + 43) < 0) || ((((long long) a23 + 4) % 5) == 0)))) || ((((long long) a23 + 43) <= 0) && ((((a29 <= 140) && (a4 == 0)) && (a25 == 11)) || (((a29 <= 140) && (a4 == 0)) && (a25 == 10))))) || (((((a25 == 11) && (a29 <= 274)) && (a4 == 1)) && (a23 <= 312)) && (246 <= a29))) || (((((a25 == 13) && (((long long) a23 + 43) <= 0)) && (a4 == 0)) && (a29 <= 274)) && (246 <= a29))) || ((((((long long) a23 + 43) <= 0) && (a29 <= 275)) && (a25 == 12)) && (a4 == 0))) || ((((a25 <= 10) && (((((long long) a23 + -600276) / 5) + 43) <= 0)) && (a4 == 1)) && ((((((long long) a23 + -600276) / 5) + 43) < 0) || ((((long long) a23 + 4) % 5) == 0)))) || (((((a25 == 13) && (((((long long) a23 + -600276) / 5) + 43) <= 0)) && (a4 == 1)) && ((((((long long) a23 + -600276) / 5) + 43) < 0) || ((((long long) a23 + 4) % 5) == 0))) && (0 <= ((long long) a23 + 42)))) || ((((a25 == 12) && (a4 == 1)) && (a23 <= 312)) && (0 <= ((long long) a23 + 42)))) || ((((((long long) a23 + 43) <= 0) && (a29 <= 140)) && (a4 == 0)) && (a25 == 9))) || ((((260 <= a29) && (((long long) a23 + 43) <= 0)) && (a4 == 0)) && (a25 <= 9))) RESULT: Ultimate proved your program to be correct! [2024-10-13 23:27:37,741 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE