/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/loop-invgen/fragtest_simple.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 17:54:21,526 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 17:54:21,596 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 17:54:21,600 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 17:54:21,600 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 17:54:21,642 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 17:54:21,642 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 17:54:21,642 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 17:54:21,643 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 17:54:21,643 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 17:54:21,643 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 17:54:21,644 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 17:54:21,644 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 17:54:21,644 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 17:54:21,644 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 17:54:21,645 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 17:54:21,645 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 17:54:21,645 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 17:54:21,645 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 17:54:21,646 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 17:54:21,646 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 17:54:21,648 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 17:54:21,648 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 17:54:21,648 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 17:54:21,649 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 17:54:21,649 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 17:54:21,649 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 17:54:21,649 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 17:54:21,650 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 17:54:21,650 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 17:54:21,650 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 17:54:21,650 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 17:54:21,650 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 17:54:21,651 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 17:54:21,651 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 17:54:21,651 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 17:54:21,651 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 17:54:21,652 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 17:54:21,652 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 17:54:21,652 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 17:54:21,652 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 17:54:21,658 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 17:54:21,658 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 17:54:21,658 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 17:54:21,898 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 17:54:21,914 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 17:54:21,916 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 17:54:21,917 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 17:54:21,917 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 17:54:21,919 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/fragtest_simple.i [2023-12-19 17:54:23,140 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 17:54:23,288 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 17:54:23,289 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/fragtest_simple.i [2023-12-19 17:54:23,294 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a73edc65/06600da636b341ef9be2eaf6a51d9912/FLAGf182be50c [2023-12-19 17:54:23,305 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a73edc65/06600da636b341ef9be2eaf6a51d9912 [2023-12-19 17:54:23,309 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 17:54:23,310 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 17:54:23,311 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 17:54:23,311 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 17:54:23,315 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 17:54:23,316 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 05:54:23" (1/1) ... [2023-12-19 17:54:23,316 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c8e4910 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:54:23, skipping insertion in model container [2023-12-19 17:54:23,316 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 05:54:23" (1/1) ... [2023-12-19 17:54:23,331 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 17:54:23,431 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/fragtest_simple.i[893,906] [2023-12-19 17:54:23,440 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 17:54:23,447 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 17:54:23,455 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/fragtest_simple.i[893,906] [2023-12-19 17:54:23,458 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 17:54:23,467 INFO L206 MainTranslator]: Completed translation [2023-12-19 17:54:23,468 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:54:23 WrapperNode [2023-12-19 17:54:23,468 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 17:54:23,469 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 17:54:23,469 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 17:54:23,469 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 17:54:23,473 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:54:23" (1/1) ... [2023-12-19 17:54:23,478 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:54:23" (1/1) ... [2023-12-19 17:54:23,489 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 61 [2023-12-19 17:54:23,490 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 17:54:23,490 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 17:54:23,490 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 17:54:23,490 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 17:54:23,497 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:54:23" (1/1) ... [2023-12-19 17:54:23,497 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:54:23" (1/1) ... [2023-12-19 17:54:23,498 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:54:23" (1/1) ... [2023-12-19 17:54:23,505 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]. [2023-12-19 17:54:23,505 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:54:23" (1/1) ... [2023-12-19 17:54:23,505 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:54:23" (1/1) ... [2023-12-19 17:54:23,507 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:54:23" (1/1) ... [2023-12-19 17:54:23,509 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:54:23" (1/1) ... [2023-12-19 17:54:23,510 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:54:23" (1/1) ... [2023-12-19 17:54:23,510 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:54:23" (1/1) ... [2023-12-19 17:54:23,511 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 17:54:23,512 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 17:54:23,512 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 17:54:23,512 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 17:54:23,513 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:54:23" (1/1) ... [2023-12-19 17:54:23,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 17:54:23,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:54:23,549 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) [2023-12-19 17:54:23,565 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 [2023-12-19 17:54:23,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 17:54:23,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 17:54:23,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 17:54:23,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 17:54:23,620 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 17:54:23,622 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 17:54:23,747 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 17:54:23,768 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 17:54:23,769 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-12-19 17:54:23,769 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 05:54:23 BoogieIcfgContainer [2023-12-19 17:54:23,769 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 17:54:23,770 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 17:54:23,771 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 17:54:23,773 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 17:54:23,773 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 05:54:23" (1/3) ... [2023-12-19 17:54:23,773 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53fb0a7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 05:54:23, skipping insertion in model container [2023-12-19 17:54:23,773 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:54:23" (2/3) ... [2023-12-19 17:54:23,774 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53fb0a7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 05:54:23, skipping insertion in model container [2023-12-19 17:54:23,774 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 05:54:23" (3/3) ... [2023-12-19 17:54:23,774 INFO L112 eAbstractionObserver]: Analyzing ICFG fragtest_simple.i [2023-12-19 17:54:23,786 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 17:54:23,786 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 17:54:23,815 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 17:54:23,819 INFO L357 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, mHoare=true, 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;@2088eb6f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 17:54:23,819 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 17:54:23,822 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 15 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:23,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-19 17:54:23,826 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:54:23,826 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:54:23,827 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:54:23,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:54:23,830 INFO L85 PathProgramCache]: Analyzing trace with hash 217789248, now seen corresponding path program 1 times [2023-12-19 17:54:23,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:54:23,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699254883] [2023-12-19 17:54:23,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:54:23,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:54:23,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:54:23,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:54:23,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:54:23,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699254883] [2023-12-19 17:54:23,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699254883] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 17:54:23,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 17:54:23,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 17:54:23,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912431193] [2023-12-19 17:54:23,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 17:54:23,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 17:54:23,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:54:23,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 17:54:23,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 17:54:23,963 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 15 states have internal predecessors, (24), 0 states have call successors, (0), 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 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:23,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:54:23,980 INFO L93 Difference]: Finished difference Result 29 states and 43 transitions. [2023-12-19 17:54:23,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 17:54:23,982 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2023-12-19 17:54:23,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:54:23,987 INFO L225 Difference]: With dead ends: 29 [2023-12-19 17:54:23,987 INFO L226 Difference]: Without dead ends: 14 [2023-12-19 17:54:23,989 INFO L412 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 [2023-12-19 17:54:23,992 INFO L413 NwaCegarLoop]: 17 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, 17 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 [2023-12-19 17:54:23,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 17:54:24,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2023-12-19 17:54:24,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2023-12-19 17:54:24,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:24,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2023-12-19 17:54:24,014 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 9 [2023-12-19 17:54:24,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:54:24,014 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2023-12-19 17:54:24,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:24,014 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2023-12-19 17:54:24,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-19 17:54:24,015 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:54:24,015 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:54:24,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 17:54:24,015 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:54:24,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:54:24,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1079105914, now seen corresponding path program 1 times [2023-12-19 17:54:24,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:54:24,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297905251] [2023-12-19 17:54:24,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:54:24,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:54:24,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:54:24,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:54:24,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:54:24,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297905251] [2023-12-19 17:54:24,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297905251] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 17:54:24,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 17:54:24,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 17:54:24,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029812943] [2023-12-19 17:54:24,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 17:54:24,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 17:54:24,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:54:24,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 17:54:24,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 17:54:24,166 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:24,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:54:24,192 INFO L93 Difference]: Finished difference Result 19 states and 22 transitions. [2023-12-19 17:54:24,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 17:54:24,193 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2023-12-19 17:54:24,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:54:24,194 INFO L225 Difference]: With dead ends: 19 [2023-12-19 17:54:24,194 INFO L226 Difference]: Without dead ends: 17 [2023-12-19 17:54:24,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 17:54:24,195 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 5 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 17:54:24,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 27 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 17:54:24,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-12-19 17:54:24,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2023-12-19 17:54:24,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:24,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2023-12-19 17:54:24,204 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 11 [2023-12-19 17:54:24,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:54:24,205 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2023-12-19 17:54:24,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:24,205 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2023-12-19 17:54:24,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-19 17:54:24,206 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:54:24,207 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:54:24,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 17:54:24,207 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:54:24,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:54:24,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1318207955, now seen corresponding path program 1 times [2023-12-19 17:54:24,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:54:24,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500739155] [2023-12-19 17:54:24,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:54:24,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:54:24,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:54:24,332 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:54:24,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:54:24,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500739155] [2023-12-19 17:54:24,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500739155] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 17:54:24,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 17:54:24,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 17:54:24,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280792804] [2023-12-19 17:54:24,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 17:54:24,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 17:54:24,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:54:24,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 17:54:24,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 17:54:24,334 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:24,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:54:24,368 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2023-12-19 17:54:24,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 17:54:24,369 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2023-12-19 17:54:24,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:54:24,369 INFO L225 Difference]: With dead ends: 33 [2023-12-19 17:54:24,369 INFO L226 Difference]: Without dead ends: 22 [2023-12-19 17:54:24,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-19 17:54:24,371 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 7 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 17:54:24,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 29 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 17:54:24,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-12-19 17:54:24,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2023-12-19 17:54:24,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 17 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:24,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2023-12-19 17:54:24,374 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 15 [2023-12-19 17:54:24,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:54:24,374 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2023-12-19 17:54:24,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:24,375 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2023-12-19 17:54:24,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-19 17:54:24,375 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:54:24,375 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:54:24,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 17:54:24,375 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:54:24,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:54:24,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1219861422, now seen corresponding path program 1 times [2023-12-19 17:54:24,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:54:24,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343622988] [2023-12-19 17:54:24,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:54:24,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:54:24,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:54:24,474 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:54:24,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:54:24,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343622988] [2023-12-19 17:54:24,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343622988] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:54:24,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597033570] [2023-12-19 17:54:24,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:54:24,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:54:24,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:54:24,478 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) [2023-12-19 17:54:24,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 17:54:24,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:54:24,529 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 17:54:24,533 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:54:24,629 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:54:24,629 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:54:24,669 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:54:24,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597033570] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:54:24,670 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:54:24,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 12 [2023-12-19 17:54:24,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855200662] [2023-12-19 17:54:24,670 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:54:24,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 17:54:24,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:54:24,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 17:54:24,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-19 17:54:24,672 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:24,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:54:24,780 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2023-12-19 17:54:24,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 17:54:24,781 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 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 17 [2023-12-19 17:54:24,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:54:24,781 INFO L225 Difference]: With dead ends: 44 [2023-12-19 17:54:24,781 INFO L226 Difference]: Without dead ends: 33 [2023-12-19 17:54:24,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2023-12-19 17:54:24,783 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 26 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 17:54:24,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 52 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 17:54:24,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-12-19 17:54:24,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 24. [2023-12-19 17:54:24,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:24,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2023-12-19 17:54:24,787 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 17 [2023-12-19 17:54:24,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:54:24,787 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2023-12-19 17:54:24,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:24,787 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2023-12-19 17:54:24,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-19 17:54:24,787 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:54:24,788 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:54:24,813 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-19 17:54:25,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:54:25,014 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:54:25,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:54:25,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1316760726, now seen corresponding path program 2 times [2023-12-19 17:54:25,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:54:25,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516859129] [2023-12-19 17:54:25,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:54:25,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:54:25,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:54:25,091 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:54:25,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:54:25,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516859129] [2023-12-19 17:54:25,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516859129] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:54:25,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604550556] [2023-12-19 17:54:25,092 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-19 17:54:25,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:54:25,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:54:25,098 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) [2023-12-19 17:54:25,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 17:54:25,130 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-19 17:54:25,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:54:25,131 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 17:54:25,132 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:54:25,203 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:54:25,203 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:54:25,265 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:54:25,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604550556] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:54:25,266 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:54:25,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 16 [2023-12-19 17:54:25,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662797308] [2023-12-19 17:54:25,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:54:25,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-19 17:54:25,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:54:25,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-19 17:54:25,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2023-12-19 17:54:25,268 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:25,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:54:25,433 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2023-12-19 17:54:25,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-19 17:54:25,433 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 0 states have call successors, (0), 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 23 [2023-12-19 17:54:25,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:54:25,434 INFO L225 Difference]: With dead ends: 58 [2023-12-19 17:54:25,435 INFO L226 Difference]: Without dead ends: 43 [2023-12-19 17:54:25,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 37 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=160, Invalid=652, Unknown=0, NotChecked=0, Total=812 [2023-12-19 17:54:25,436 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 37 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 17:54:25,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 66 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 17:54:25,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-12-19 17:54:25,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 30. [2023-12-19 17:54:25,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 29 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:25,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2023-12-19 17:54:25,440 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 23 [2023-12-19 17:54:25,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:54:25,440 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2023-12-19 17:54:25,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:25,441 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2023-12-19 17:54:25,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-12-19 17:54:25,441 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:54:25,441 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:54:25,462 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 17:54:25,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:54:25,664 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:54:25,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:54:25,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1865733826, now seen corresponding path program 3 times [2023-12-19 17:54:25,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:54:25,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000040404] [2023-12-19 17:54:25,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:54:25,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:54:25,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:54:25,752 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:54:25,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:54:25,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000040404] [2023-12-19 17:54:25,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000040404] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:54:25,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466393120] [2023-12-19 17:54:25,753 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-19 17:54:25,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:54:25,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:54:25,754 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) [2023-12-19 17:54:25,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 17:54:25,789 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-19 17:54:25,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:54:25,790 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-19 17:54:25,791 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:54:25,882 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 18 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:54:25,882 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:54:25,932 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 18 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:54:25,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466393120] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:54:25,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:54:25,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 16 [2023-12-19 17:54:25,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483047774] [2023-12-19 17:54:25,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:54:25,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-19 17:54:25,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:54:25,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-19 17:54:25,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2023-12-19 17:54:25,934 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:26,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:54:26,010 INFO L93 Difference]: Finished difference Result 67 states and 79 transitions. [2023-12-19 17:54:26,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 17:54:26,010 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 0 states have call successors, (0), 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 29 [2023-12-19 17:54:26,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:54:26,010 INFO L225 Difference]: With dead ends: 67 [2023-12-19 17:54:26,010 INFO L226 Difference]: Without dead ends: 48 [2023-12-19 17:54:26,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 46 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2023-12-19 17:54:26,011 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 40 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 17:54:26,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 79 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 17:54:26,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2023-12-19 17:54:26,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 32. [2023-12-19 17:54:26,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 31 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:26,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2023-12-19 17:54:26,015 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 29 [2023-12-19 17:54:26,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:54:26,015 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2023-12-19 17:54:26,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:26,016 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2023-12-19 17:54:26,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-19 17:54:26,016 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:54:26,016 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:54:26,033 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-19 17:54:26,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:54:26,221 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:54:26,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:54:26,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1202542631, now seen corresponding path program 4 times [2023-12-19 17:54:26,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:54:26,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210766305] [2023-12-19 17:54:26,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:54:26,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:54:26,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:54:26,334 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 12 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:54:26,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:54:26,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210766305] [2023-12-19 17:54:26,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210766305] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:54:26,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658814634] [2023-12-19 17:54:26,334 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-19 17:54:26,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:54:26,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:54:26,335 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) [2023-12-19 17:54:26,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 17:54:26,370 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-19 17:54:26,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:54:26,371 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-19 17:54:26,372 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:54:26,409 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 20 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:54:26,409 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:54:26,461 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 20 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:54:26,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [658814634] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:54:26,461 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:54:26,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2023-12-19 17:54:26,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435075456] [2023-12-19 17:54:26,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:54:26,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-19 17:54:26,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:54:26,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-19 17:54:26,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-12-19 17:54:26,464 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:26,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:54:26,526 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2023-12-19 17:54:26,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-19 17:54:26,526 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 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 31 [2023-12-19 17:54:26,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:54:26,529 INFO L225 Difference]: With dead ends: 49 [2023-12-19 17:54:26,529 INFO L226 Difference]: Without dead ends: 47 [2023-12-19 17:54:26,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 54 SyntacticMatches, 7 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272 [2023-12-19 17:54:26,530 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 14 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 17:54:26,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 81 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 17:54:26,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-12-19 17:54:26,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 40. [2023-12-19 17:54:26,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.1025641025641026) internal successors, (43), 39 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:26,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2023-12-19 17:54:26,541 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 31 [2023-12-19 17:54:26,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:54:26,541 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2023-12-19 17:54:26,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:26,542 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2023-12-19 17:54:26,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-19 17:54:26,544 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:54:26,544 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:54:26,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 17:54:26,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:54:26,752 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:54:26,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:54:26,753 INFO L85 PathProgramCache]: Analyzing trace with hash 286167821, now seen corresponding path program 5 times [2023-12-19 17:54:26,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:54:26,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794536131] [2023-12-19 17:54:26,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:54:26,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:54:26,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:54:26,865 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 38 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:54:26,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:54:26,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794536131] [2023-12-19 17:54:26,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794536131] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:54:26,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791295525] [2023-12-19 17:54:26,866 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-19 17:54:26,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:54:26,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:54:26,867 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) [2023-12-19 17:54:26,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 17:54:26,905 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2023-12-19 17:54:26,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:54:26,905 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-19 17:54:26,906 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:54:27,026 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 50 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:54:27,026 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:54:27,103 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 50 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:54:27,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791295525] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:54:27,103 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:54:27,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 23 [2023-12-19 17:54:27,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92378467] [2023-12-19 17:54:27,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:54:27,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-19 17:54:27,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:54:27,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-19 17:54:27,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=376, Unknown=0, NotChecked=0, Total=506 [2023-12-19 17:54:27,105 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand has 23 states, 23 states have (on average 3.3043478260869565) internal successors, (76), 23 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:27,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:54:27,263 INFO L93 Difference]: Finished difference Result 114 states and 131 transitions. [2023-12-19 17:54:27,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-19 17:54:27,263 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.3043478260869565) internal successors, (76), 23 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2023-12-19 17:54:27,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:54:27,263 INFO L225 Difference]: With dead ends: 114 [2023-12-19 17:54:27,263 INFO L226 Difference]: Without dead ends: 68 [2023-12-19 17:54:27,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 61 SyntacticMatches, 7 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=291, Invalid=831, Unknown=0, NotChecked=0, Total=1122 [2023-12-19 17:54:27,264 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 67 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 17:54:27,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 106 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 17:54:27,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-12-19 17:54:27,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 44. [2023-12-19 17:54:27,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.0930232558139534) internal successors, (47), 43 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:27,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2023-12-19 17:54:27,268 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 39 [2023-12-19 17:54:27,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:54:27,268 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2023-12-19 17:54:27,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.3043478260869565) internal successors, (76), 23 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:27,268 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2023-12-19 17:54:27,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-19 17:54:27,269 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:54:27,269 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:54:27,275 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 17:54:27,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:54:27,474 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:54:27,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:54:27,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1270551529, now seen corresponding path program 6 times [2023-12-19 17:54:27,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:54:27,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137962967] [2023-12-19 17:54:27,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:54:27,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:54:27,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:54:27,638 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 30 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:54:27,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:54:27,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137962967] [2023-12-19 17:54:27,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137962967] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:54:27,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618602618] [2023-12-19 17:54:27,638 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-19 17:54:27,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:54:27,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:54:27,658 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) [2023-12-19 17:54:27,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 17:54:27,698 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2023-12-19 17:54:27,698 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:54:27,698 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-19 17:54:27,700 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:54:27,743 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 42 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:54:27,743 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:54:27,816 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 42 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:54:27,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1618602618] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:54:27,816 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:54:27,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2023-12-19 17:54:27,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814480662] [2023-12-19 17:54:27,816 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:54:27,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-19 17:54:27,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:54:27,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-19 17:54:27,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-19 17:54:27,817 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 12 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:27,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:54:27,883 INFO L93 Difference]: Finished difference Result 61 states and 65 transitions. [2023-12-19 17:54:27,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-19 17:54:27,884 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 12 states have internal predecessors, (66), 0 states have call successors, (0), 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 43 [2023-12-19 17:54:27,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:54:27,884 INFO L225 Difference]: With dead ends: 61 [2023-12-19 17:54:27,884 INFO L226 Difference]: Without dead ends: 59 [2023-12-19 17:54:27,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 76 SyntacticMatches, 11 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=149, Invalid=271, Unknown=0, NotChecked=0, Total=420 [2023-12-19 17:54:27,885 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 25 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 17:54:27,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 83 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 17:54:27,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-12-19 17:54:27,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 52. [2023-12-19 17:54:27,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.0784313725490196) internal successors, (55), 51 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:27,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2023-12-19 17:54:27,888 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 43 [2023-12-19 17:54:27,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:54:27,888 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2023-12-19 17:54:27,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 12 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:27,889 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2023-12-19 17:54:27,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-19 17:54:27,889 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:54:27,889 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:54:27,908 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-19 17:54:28,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:54:28,109 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:54:28,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:54:28,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1116419837, now seen corresponding path program 7 times [2023-12-19 17:54:28,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:54:28,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574193387] [2023-12-19 17:54:28,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:54:28,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:54:28,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:54:28,322 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 80 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:54:28,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:54:28,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574193387] [2023-12-19 17:54:28,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574193387] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:54:28,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430701936] [2023-12-19 17:54:28,323 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-19 17:54:28,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:54:28,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:54:28,324 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 17:54:28,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 17:54:28,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:54:28,364 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-19 17:54:28,365 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:54:28,531 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 96 proven. 42 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 17:54:28,531 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:54:28,647 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 96 proven. 42 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 17:54:28,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430701936] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:54:28,647 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:54:28,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 26 [2023-12-19 17:54:28,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920752763] [2023-12-19 17:54:28,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:54:28,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-19 17:54:28,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:54:28,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-19 17:54:28,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=494, Unknown=0, NotChecked=0, Total=650 [2023-12-19 17:54:28,649 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 26 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:28,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:54:28,782 INFO L93 Difference]: Finished difference Result 115 states and 133 transitions. [2023-12-19 17:54:28,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-19 17:54:28,782 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 26 states have internal predecessors, (87), 0 states have call successors, (0), 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 51 [2023-12-19 17:54:28,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:54:28,783 INFO L225 Difference]: With dead ends: 115 [2023-12-19 17:54:28,783 INFO L226 Difference]: Without dead ends: 82 [2023-12-19 17:54:28,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 81 SyntacticMatches, 12 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 367 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=270, Invalid=786, Unknown=0, NotChecked=0, Total=1056 [2023-12-19 17:54:28,784 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 74 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 17:54:28,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 113 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 17:54:28,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2023-12-19 17:54:28,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 54. [2023-12-19 17:54:28,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.0754716981132075) internal successors, (57), 53 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:28,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2023-12-19 17:54:28,787 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 51 [2023-12-19 17:54:28,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:54:28,787 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2023-12-19 17:54:28,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 26 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:28,788 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2023-12-19 17:54:28,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-19 17:54:28,788 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:54:28,788 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:54:28,793 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-19 17:54:28,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:54:28,993 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:54:28,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:54:28,993 INFO L85 PathProgramCache]: Analyzing trace with hash 885943970, now seen corresponding path program 8 times [2023-12-19 17:54:28,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:54:28,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784382770] [2023-12-19 17:54:28,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:54:28,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:54:29,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:54:29,165 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 80 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:54:29,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:54:29,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784382770] [2023-12-19 17:54:29,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784382770] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:54:29,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458178729] [2023-12-19 17:54:29,166 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-19 17:54:29,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:54:29,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:54:29,167 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 17:54:29,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-19 17:54:29,222 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-19 17:54:29,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:54:29,223 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-19 17:54:29,224 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:54:29,434 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 98 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:54:29,434 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:54:29,576 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 98 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:54:29,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [458178729] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:54:29,576 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:54:29,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 28 [2023-12-19 17:54:29,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738069015] [2023-12-19 17:54:29,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:54:29,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-19 17:54:29,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:54:29,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-19 17:54:29,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=573, Unknown=0, NotChecked=0, Total=756 [2023-12-19 17:54:29,578 INFO L87 Difference]: Start difference. First operand 54 states and 57 transitions. Second operand has 28 states, 28 states have (on average 3.1785714285714284) internal successors, (89), 28 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:29,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:54:29,751 INFO L93 Difference]: Finished difference Result 123 states and 143 transitions. [2023-12-19 17:54:29,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-19 17:54:29,751 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.1785714285714284) internal successors, (89), 28 states have internal predecessors, (89), 0 states have call successors, (0), 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 [2023-12-19 17:54:29,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:54:29,752 INFO L225 Difference]: With dead ends: 123 [2023-12-19 17:54:29,752 INFO L226 Difference]: Without dead ends: 88 [2023-12-19 17:54:29,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 82 SyntacticMatches, 14 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 440 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=329, Invalid=931, Unknown=0, NotChecked=0, Total=1260 [2023-12-19 17:54:29,753 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 97 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 17:54:29,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 157 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 17:54:29,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-12-19 17:54:29,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 56. [2023-12-19 17:54:29,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.0727272727272728) internal successors, (59), 55 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:29,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 59 transitions. [2023-12-19 17:54:29,757 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 59 transitions. Word has length 53 [2023-12-19 17:54:29,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:54:29,757 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 59 transitions. [2023-12-19 17:54:29,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.1785714285714284) internal successors, (89), 28 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:29,757 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 59 transitions. [2023-12-19 17:54:29,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-19 17:54:29,758 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:54:29,758 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:54:29,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-19 17:54:29,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-19 17:54:29,963 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:54:29,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:54:29,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1558032121, now seen corresponding path program 9 times [2023-12-19 17:54:29,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:54:29,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425220951] [2023-12-19 17:54:29,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:54:29,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:54:29,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:54:30,147 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 56 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:54:30,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:54:30,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425220951] [2023-12-19 17:54:30,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425220951] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:54:30,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604675386] [2023-12-19 17:54:30,148 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-19 17:54:30,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:54:30,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:54:30,149 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 17:54:30,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-19 17:54:30,194 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2023-12-19 17:54:30,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:54:30,195 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-19 17:54:30,196 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:54:30,245 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 72 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:54:30,245 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:54:30,359 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 72 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:54:30,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [604675386] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:54:30,360 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:54:30,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 14 [2023-12-19 17:54:30,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601963695] [2023-12-19 17:54:30,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:54:30,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-19 17:54:30,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:54:30,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-19 17:54:30,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2023-12-19 17:54:30,361 INFO L87 Difference]: Start difference. First operand 56 states and 59 transitions. Second operand has 15 states, 15 states have (on average 5.2) internal successors, (78), 14 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:30,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:54:30,474 INFO L93 Difference]: Finished difference Result 73 states and 77 transitions. [2023-12-19 17:54:30,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-19 17:54:30,474 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.2) internal successors, (78), 14 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-12-19 17:54:30,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:54:30,474 INFO L225 Difference]: With dead ends: 73 [2023-12-19 17:54:30,474 INFO L226 Difference]: Without dead ends: 71 [2023-12-19 17:54:30,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 98 SyntacticMatches, 15 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=214, Invalid=386, Unknown=0, NotChecked=0, Total=600 [2023-12-19 17:54:30,475 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 31 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 17:54:30,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 103 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 17:54:30,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2023-12-19 17:54:30,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 64. [2023-12-19 17:54:30,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.0634920634920635) internal successors, (67), 63 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:30,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 67 transitions. [2023-12-19 17:54:30,484 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 67 transitions. Word has length 55 [2023-12-19 17:54:30,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:54:30,484 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 67 transitions. [2023-12-19 17:54:30,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.2) internal successors, (78), 14 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:30,484 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 67 transitions. [2023-12-19 17:54:30,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-19 17:54:30,487 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:54:30,487 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:54:30,494 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-19 17:54:30,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:54:30,692 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:54:30,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:54:30,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1075008531, now seen corresponding path program 10 times [2023-12-19 17:54:30,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:54:30,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472710994] [2023-12-19 17:54:30,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:54:30,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:54:30,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:54:30,950 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 138 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:54:30,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:54:30,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472710994] [2023-12-19 17:54:30,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472710994] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:54:30,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247004147] [2023-12-19 17:54:30,951 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-19 17:54:30,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:54:30,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:54:30,961 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 17:54:30,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-19 17:54:31,011 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-19 17:54:31,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:54:31,013 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-19 17:54:31,014 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:54:31,266 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 162 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:54:31,266 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:54:31,435 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 162 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:54:31,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247004147] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:54:31,435 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:54:31,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 35 [2023-12-19 17:54:31,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040068897] [2023-12-19 17:54:31,435 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:54:31,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-19 17:54:31,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:54:31,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-19 17:54:31,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=900, Unknown=0, NotChecked=0, Total=1190 [2023-12-19 17:54:31,437 INFO L87 Difference]: Start difference. First operand 64 states and 67 transitions. Second operand has 35 states, 35 states have (on average 3.3142857142857145) internal successors, (116), 35 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:31,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:54:31,704 INFO L93 Difference]: Finished difference Result 186 states and 211 transitions. [2023-12-19 17:54:31,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-19 17:54:31,704 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.3142857142857145) internal successors, (116), 35 states have internal predecessors, (116), 0 states have call successors, (0), 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 63 [2023-12-19 17:54:31,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:54:31,705 INFO L225 Difference]: With dead ends: 186 [2023-12-19 17:54:31,705 INFO L226 Difference]: Without dead ends: 108 [2023-12-19 17:54:31,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 97 SyntacticMatches, 15 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 889 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=719, Invalid=2143, Unknown=0, NotChecked=0, Total=2862 [2023-12-19 17:54:31,706 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 162 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 17:54:31,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 163 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 17:54:31,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-12-19 17:54:31,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 68. [2023-12-19 17:54:31,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.0597014925373134) internal successors, (71), 67 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:31,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 71 transitions. [2023-12-19 17:54:31,709 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 71 transitions. Word has length 63 [2023-12-19 17:54:31,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:54:31,709 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 71 transitions. [2023-12-19 17:54:31,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.3142857142857145) internal successors, (116), 35 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:31,710 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 71 transitions. [2023-12-19 17:54:31,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-19 17:54:31,710 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:54:31,710 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:54:31,721 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-19 17:54:31,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-19 17:54:31,921 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:54:31,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:54:31,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1781856521, now seen corresponding path program 11 times [2023-12-19 17:54:31,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:54:31,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383755484] [2023-12-19 17:54:31,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:54:31,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:54:31,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:54:32,136 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 90 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:54:32,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:54:32,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383755484] [2023-12-19 17:54:32,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383755484] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:54:32,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662898354] [2023-12-19 17:54:32,136 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-19 17:54:32,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:54:32,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:54:32,137 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 17:54:32,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-19 17:54:32,191 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2023-12-19 17:54:32,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:54:32,193 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-19 17:54:32,194 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:54:32,266 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 110 proven. 162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:54:32,266 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:54:32,427 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 110 proven. 162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:54:32,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662898354] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:54:32,428 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:54:32,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 16 [2023-12-19 17:54:32,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460108332] [2023-12-19 17:54:32,428 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:54:32,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-19 17:54:32,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:54:32,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-19 17:54:32,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=172, Unknown=0, NotChecked=0, Total=272 [2023-12-19 17:54:32,429 INFO L87 Difference]: Start difference. First operand 68 states and 71 transitions. Second operand has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 16 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:32,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:54:32,553 INFO L93 Difference]: Finished difference Result 85 states and 89 transitions. [2023-12-19 17:54:32,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-19 17:54:32,554 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 16 states have internal predecessors, (90), 0 states have call successors, (0), 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 67 [2023-12-19 17:54:32,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:54:32,554 INFO L225 Difference]: With dead ends: 85 [2023-12-19 17:54:32,554 INFO L226 Difference]: Without dead ends: 83 [2023-12-19 17:54:32,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 120 SyntacticMatches, 19 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=291, Invalid=521, Unknown=0, NotChecked=0, Total=812 [2023-12-19 17:54:32,555 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 33 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 17:54:32,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 112 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 17:54:32,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-12-19 17:54:32,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 76. [2023-12-19 17:54:32,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.0533333333333332) internal successors, (79), 75 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:32,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 79 transitions. [2023-12-19 17:54:32,558 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 79 transitions. Word has length 67 [2023-12-19 17:54:32,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:54:32,558 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 79 transitions. [2023-12-19 17:54:32,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 16 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:32,558 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 79 transitions. [2023-12-19 17:54:32,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-19 17:54:32,558 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:54:32,559 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:54:32,575 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-19 17:54:32,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-12-19 17:54:32,759 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:54:32,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:54:32,760 INFO L85 PathProgramCache]: Analyzing trace with hash -315067939, now seen corresponding path program 12 times [2023-12-19 17:54:32,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:54:32,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671351695] [2023-12-19 17:54:32,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:54:32,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:54:32,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:54:33,060 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 212 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:54:33,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:54:33,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671351695] [2023-12-19 17:54:33,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671351695] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:54:33,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421141525] [2023-12-19 17:54:33,061 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-19 17:54:33,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:54:33,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:54:33,062 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 17:54:33,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-19 17:54:33,119 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2023-12-19 17:54:33,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:54:33,121 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-19 17:54:33,122 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:54:33,444 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 242 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:54:33,444 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:54:33,662 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 242 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:54:33,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1421141525] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:54:33,663 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:54:33,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 41 [2023-12-19 17:54:33,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343344986] [2023-12-19 17:54:33,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:54:33,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-12-19 17:54:33,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:54:33,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-12-19 17:54:33,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=394, Invalid=1246, Unknown=0, NotChecked=0, Total=1640 [2023-12-19 17:54:33,664 INFO L87 Difference]: Start difference. First operand 76 states and 79 transitions. Second operand has 41 states, 41 states have (on average 3.317073170731707) internal successors, (136), 41 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:34,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:54:34,012 INFO L93 Difference]: Finished difference Result 222 states and 251 transitions. [2023-12-19 17:54:34,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-12-19 17:54:34,013 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.317073170731707) internal successors, (136), 41 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2023-12-19 17:54:34,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:54:34,013 INFO L225 Difference]: With dead ends: 222 [2023-12-19 17:54:34,013 INFO L226 Difference]: Without dead ends: 128 [2023-12-19 17:54:34,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 115 SyntacticMatches, 19 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1278 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1005, Invalid=3027, Unknown=0, NotChecked=0, Total=4032 [2023-12-19 17:54:34,014 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 210 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 17:54:34,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 207 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 17:54:34,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2023-12-19 17:54:34,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 80. [2023-12-19 17:54:34,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.0506329113924051) internal successors, (83), 79 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:34,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 83 transitions. [2023-12-19 17:54:34,018 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 83 transitions. Word has length 75 [2023-12-19 17:54:34,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:54:34,018 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 83 transitions. [2023-12-19 17:54:34,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.317073170731707) internal successors, (136), 41 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:34,018 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 83 transitions. [2023-12-19 17:54:34,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-19 17:54:34,018 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:54:34,018 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:54:34,023 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-19 17:54:34,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-19 17:54:34,224 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:54:34,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:54:34,224 INFO L85 PathProgramCache]: Analyzing trace with hash -897282585, now seen corresponding path program 13 times [2023-12-19 17:54:34,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:54:34,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303931443] [2023-12-19 17:54:34,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:54:34,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:54:34,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:54:34,440 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 132 proven. 266 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:54:34,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:54:34,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303931443] [2023-12-19 17:54:34,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303931443] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:54:34,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273842012] [2023-12-19 17:54:34,441 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-19 17:54:34,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:54:34,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:54:34,454 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 17:54:34,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-19 17:54:34,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:54:34,508 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-19 17:54:34,509 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:54:34,596 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 156 proven. 242 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:54:34,596 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:54:34,790 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 156 proven. 242 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:54:34,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273842012] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:54:34,790 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:54:34,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 18 [2023-12-19 17:54:34,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868699148] [2023-12-19 17:54:34,790 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:54:34,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-19 17:54:34,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:54:34,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-19 17:54:34,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=213, Unknown=0, NotChecked=0, Total=342 [2023-12-19 17:54:34,791 INFO L87 Difference]: Start difference. First operand 80 states and 83 transitions. Second operand has 19 states, 19 states have (on average 5.368421052631579) internal successors, (102), 18 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:34,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:54:34,943 INFO L93 Difference]: Finished difference Result 97 states and 101 transitions. [2023-12-19 17:54:34,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-19 17:54:34,943 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.368421052631579) internal successors, (102), 18 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2023-12-19 17:54:34,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:54:34,944 INFO L225 Difference]: With dead ends: 97 [2023-12-19 17:54:34,944 INFO L226 Difference]: Without dead ends: 95 [2023-12-19 17:54:34,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 142 SyntacticMatches, 23 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 455 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=380, Invalid=676, Unknown=0, NotChecked=0, Total=1056 [2023-12-19 17:54:34,945 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 28 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 17:54:34,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 137 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 17:54:34,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-12-19 17:54:34,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 88. [2023-12-19 17:54:34,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 1.0459770114942528) internal successors, (91), 87 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:34,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 91 transitions. [2023-12-19 17:54:34,948 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 91 transitions. Word has length 79 [2023-12-19 17:54:34,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:54:34,948 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 91 transitions. [2023-12-19 17:54:34,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.368421052631579) internal successors, (102), 18 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:34,948 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 91 transitions. [2023-12-19 17:54:34,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-19 17:54:34,948 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:54:34,949 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:54:34,958 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-19 17:54:35,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-19 17:54:35,149 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:54:35,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:54:35,150 INFO L85 PathProgramCache]: Analyzing trace with hash 724830413, now seen corresponding path program 14 times [2023-12-19 17:54:35,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:54:35,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31404716] [2023-12-19 17:54:35,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:54:35,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:54:35,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:54:35,480 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 302 proven. 192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:54:35,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:54:35,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31404716] [2023-12-19 17:54:35,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31404716] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:54:35,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421932631] [2023-12-19 17:54:35,480 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-19 17:54:35,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:54:35,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:54:35,481 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 17:54:35,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-19 17:54:35,546 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-19 17:54:35,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:54:35,547 INFO L262 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-19 17:54:35,548 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:54:35,979 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 336 proven. 156 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 17:54:35,979 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:54:36,254 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 336 proven. 156 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 17:54:36,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1421932631] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:54:36,254 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:54:36,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28, 28] total 44 [2023-12-19 17:54:36,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784820492] [2023-12-19 17:54:36,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:54:36,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-12-19 17:54:36,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:54:36,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-12-19 17:54:36,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=438, Invalid=1454, Unknown=0, NotChecked=0, Total=1892 [2023-12-19 17:54:36,256 INFO L87 Difference]: Start difference. First operand 88 states and 91 transitions. Second operand has 44 states, 44 states have (on average 3.340909090909091) internal successors, (147), 44 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:36,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:54:36,525 INFO L93 Difference]: Finished difference Result 199 states and 229 transitions. [2023-12-19 17:54:36,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-19 17:54:36,525 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 3.340909090909091) internal successors, (147), 44 states have internal predecessors, (147), 0 states have call successors, (0), 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 87 [2023-12-19 17:54:36,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:54:36,525 INFO L225 Difference]: With dead ends: 199 [2023-12-19 17:54:36,526 INFO L226 Difference]: Without dead ends: 142 [2023-12-19 17:54:36,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 135 SyntacticMatches, 24 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1171 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=804, Invalid=2388, Unknown=0, NotChecked=0, Total=3192 [2023-12-19 17:54:36,527 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 195 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 17:54:36,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 271 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 17:54:36,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2023-12-19 17:54:36,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 90. [2023-12-19 17:54:36,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 1.0449438202247192) internal successors, (93), 89 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:36,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 93 transitions. [2023-12-19 17:54:36,530 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 93 transitions. Word has length 87 [2023-12-19 17:54:36,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:54:36,530 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 93 transitions. [2023-12-19 17:54:36,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 3.340909090909091) internal successors, (147), 44 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:36,531 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 93 transitions. [2023-12-19 17:54:36,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-19 17:54:36,531 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:54:36,531 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:54:36,536 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-19 17:54:36,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:54:36,736 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:54:36,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:54:36,736 INFO L85 PathProgramCache]: Analyzing trace with hash 831721970, now seen corresponding path program 15 times [2023-12-19 17:54:36,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:54:36,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968795875] [2023-12-19 17:54:36,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:54:36,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:54:36,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:54:37,215 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 302 proven. 218 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:54:37,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:54:37,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968795875] [2023-12-19 17:54:37,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968795875] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:54:37,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231520333] [2023-12-19 17:54:37,216 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-19 17:54:37,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:54:37,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:54:37,217 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 17:54:37,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-19 17:54:37,281 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2023-12-19 17:54:37,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:54:37,283 INFO L262 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-19 17:54:37,284 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:54:37,670 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 338 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:54:37,670 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:54:37,945 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 338 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:54:37,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231520333] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:54:37,946 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:54:37,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 46 [2023-12-19 17:54:37,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359503968] [2023-12-19 17:54:37,946 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:54:37,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-12-19 17:54:37,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:54:37,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-12-19 17:54:37,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=483, Invalid=1587, Unknown=0, NotChecked=0, Total=2070 [2023-12-19 17:54:37,948 INFO L87 Difference]: Start difference. First operand 90 states and 93 transitions. Second operand has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:38,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:54:38,219 INFO L93 Difference]: Finished difference Result 207 states and 239 transitions. [2023-12-19 17:54:38,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-19 17:54:38,220 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 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 89 [2023-12-19 17:54:38,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:54:38,220 INFO L225 Difference]: With dead ends: 207 [2023-12-19 17:54:38,220 INFO L226 Difference]: Without dead ends: 148 [2023-12-19 17:54:38,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 136 SyntacticMatches, 26 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1292 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=905, Invalid=2635, Unknown=0, NotChecked=0, Total=3540 [2023-12-19 17:54:38,222 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 199 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 17:54:38,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 303 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 17:54:38,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2023-12-19 17:54:38,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 92. [2023-12-19 17:54:38,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 1.043956043956044) internal successors, (95), 91 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:38,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 95 transitions. [2023-12-19 17:54:38,225 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 95 transitions. Word has length 89 [2023-12-19 17:54:38,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:54:38,226 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 95 transitions. [2023-12-19 17:54:38,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.239130434782609) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:38,226 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 95 transitions. [2023-12-19 17:54:38,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-19 17:54:38,226 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:54:38,226 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:54:38,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-19 17:54:38,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-19 17:54:38,432 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:54:38,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:54:38,432 INFO L85 PathProgramCache]: Analyzing trace with hash 475293143, now seen corresponding path program 16 times [2023-12-19 17:54:38,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:54:38,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950038906] [2023-12-19 17:54:38,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:54:38,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:54:38,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:54:38,712 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 182 proven. 366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:54:38,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:54:38,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950038906] [2023-12-19 17:54:38,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950038906] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:54:38,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077303220] [2023-12-19 17:54:38,713 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-19 17:54:38,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:54:38,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:54:38,730 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 17:54:38,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-19 17:54:38,793 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-19 17:54:38,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:54:38,795 INFO L262 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-19 17:54:38,796 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:54:38,848 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 210 proven. 338 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:54:38,849 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:54:39,009 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 210 proven. 338 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:54:39,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1077303220] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:54:39,009 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:54:39,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 20 [2023-12-19 17:54:39,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559890324] [2023-12-19 17:54:39,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:54:39,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-19 17:54:39,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:54:39,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-19 17:54:39,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=258, Unknown=0, NotChecked=0, Total=420 [2023-12-19 17:54:39,011 INFO L87 Difference]: Start difference. First operand 92 states and 95 transitions. Second operand has 21 states, 21 states have (on average 5.428571428571429) internal successors, (114), 20 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:39,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:54:39,126 INFO L93 Difference]: Finished difference Result 109 states and 113 transitions. [2023-12-19 17:54:39,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-12-19 17:54:39,126 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.428571428571429) internal successors, (114), 20 states have internal predecessors, (114), 0 states have call successors, (0), 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 91 [2023-12-19 17:54:39,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:54:39,126 INFO L225 Difference]: With dead ends: 109 [2023-12-19 17:54:39,127 INFO L226 Difference]: Without dead ends: 107 [2023-12-19 17:54:39,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 164 SyntacticMatches, 27 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 589 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=481, Invalid=851, Unknown=0, NotChecked=0, Total=1332 [2023-12-19 17:54:39,127 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 43 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 17:54:39,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 146 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 17:54:39,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-12-19 17:54:39,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 100. [2023-12-19 17:54:39,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.0404040404040404) internal successors, (103), 99 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:39,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 103 transitions. [2023-12-19 17:54:39,131 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 103 transitions. Word has length 91 [2023-12-19 17:54:39,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:54:39,131 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 103 transitions. [2023-12-19 17:54:39,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.428571428571429) internal successors, (114), 20 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:39,131 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 103 transitions. [2023-12-19 17:54:39,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-19 17:54:39,132 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:54:39,132 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 15, 15, 15, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:54:39,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-19 17:54:39,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:54:39,332 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:54:39,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:54:39,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1218121539, now seen corresponding path program 17 times [2023-12-19 17:54:39,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:54:39,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074438593] [2023-12-19 17:54:39,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:54:39,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:54:39,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:54:39,804 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 408 proven. 252 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:54:39,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:54:39,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074438593] [2023-12-19 17:54:39,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074438593] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:54:39,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135256846] [2023-12-19 17:54:39,804 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-19 17:54:39,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:54:39,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:54:39,805 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 17:54:39,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-19 17:54:39,878 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2023-12-19 17:54:39,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:54:39,880 INFO L262 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-19 17:54:39,881 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:54:40,353 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 450 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:54:40,353 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:54:40,583 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 450 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:54:40,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135256846] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:54:40,583 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:54:40,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 53 [2023-12-19 17:54:40,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935436137] [2023-12-19 17:54:40,583 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:54:40,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-12-19 17:54:40,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:54:40,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-12-19 17:54:40,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=650, Invalid=2106, Unknown=0, NotChecked=0, Total=2756 [2023-12-19 17:54:40,585 INFO L87 Difference]: Start difference. First operand 100 states and 103 transitions. Second operand has 53 states, 53 states have (on average 3.3207547169811322) internal successors, (176), 53 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:41,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:54:41,158 INFO L93 Difference]: Finished difference Result 294 states and 331 transitions. [2023-12-19 17:54:41,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-19 17:54:41,158 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 3.3207547169811322) internal successors, (176), 53 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2023-12-19 17:54:41,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:54:41,158 INFO L225 Difference]: With dead ends: 294 [2023-12-19 17:54:41,159 INFO L226 Difference]: Without dead ends: 168 [2023-12-19 17:54:41,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 151 SyntacticMatches, 27 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2260 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1721, Invalid=5251, Unknown=0, NotChecked=0, Total=6972 [2023-12-19 17:54:41,160 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 231 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 17:54:41,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 445 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 17:54:41,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2023-12-19 17:54:41,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 104. [2023-12-19 17:54:41,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.0388349514563107) internal successors, (107), 103 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:41,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 107 transitions. [2023-12-19 17:54:41,164 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 107 transitions. Word has length 99 [2023-12-19 17:54:41,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:54:41,164 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 107 transitions. [2023-12-19 17:54:41,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 3.3207547169811322) internal successors, (176), 53 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:41,164 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 107 transitions. [2023-12-19 17:54:41,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-19 17:54:41,165 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:54:41,165 INFO L195 NwaCegarLoop]: trace histogram [17, 16, 16, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:54:41,172 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-19 17:54:41,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:54:41,370 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:54:41,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:54:41,371 INFO L85 PathProgramCache]: Analyzing trace with hash -486535481, now seen corresponding path program 18 times [2023-12-19 17:54:41,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:54:41,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087221464] [2023-12-19 17:54:41,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:54:41,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:54:41,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:54:41,697 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 240 proven. 482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:54:41,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:54:41,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087221464] [2023-12-19 17:54:41,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087221464] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:54:41,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855129491] [2023-12-19 17:54:41,698 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-19 17:54:41,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:54:41,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:54:41,699 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 17:54:41,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-19 17:54:41,774 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2023-12-19 17:54:41,775 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:54:41,776 INFO L262 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-19 17:54:41,778 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:54:41,892 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 272 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:54:41,893 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:54:42,174 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 272 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:54:42,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855129491] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:54:42,175 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:54:42,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 22 [2023-12-19 17:54:42,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970177741] [2023-12-19 17:54:42,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:54:42,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-19 17:54:42,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:54:42,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-19 17:54:42,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=307, Unknown=0, NotChecked=0, Total=506 [2023-12-19 17:54:42,176 INFO L87 Difference]: Start difference. First operand 104 states and 107 transitions. Second operand has 23 states, 23 states have (on average 5.478260869565218) internal successors, (126), 22 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:42,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:54:42,373 INFO L93 Difference]: Finished difference Result 121 states and 125 transitions. [2023-12-19 17:54:42,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-12-19 17:54:42,373 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.478260869565218) internal successors, (126), 22 states have internal predecessors, (126), 0 states have call successors, (0), 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 103 [2023-12-19 17:54:42,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:54:42,374 INFO L225 Difference]: With dead ends: 121 [2023-12-19 17:54:42,374 INFO L226 Difference]: Without dead ends: 119 [2023-12-19 17:54:42,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 186 SyntacticMatches, 31 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 739 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=594, Invalid=1046, Unknown=0, NotChecked=0, Total=1640 [2023-12-19 17:54:42,375 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 28 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 17:54:42,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 182 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 17:54:42,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2023-12-19 17:54:42,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 112. [2023-12-19 17:54:42,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.0360360360360361) internal successors, (115), 111 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) [2023-12-19 17:54:42,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 115 transitions. [2023-12-19 17:54:42,379 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 115 transitions. Word has length 103 [2023-12-19 17:54:42,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:54:42,379 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 115 transitions. [2023-12-19 17:54:42,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.478260869565218) internal successors, (126), 22 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:42,380 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 115 transitions. [2023-12-19 17:54:42,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-19 17:54:42,380 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:54:42,380 INFO L195 NwaCegarLoop]: trace histogram [18, 17, 17, 17, 17, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:54:42,395 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-19 17:54:42,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:54:42,581 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:54:42,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:54:42,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1945065043, now seen corresponding path program 19 times [2023-12-19 17:54:42,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:54:42,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292099780] [2023-12-19 17:54:42,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:54:42,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:54:42,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:54:43,214 INFO L134 CoverageAnalysis]: Checked inductivity of 850 backedges. 530 proven. 320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:54:43,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:54:43,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292099780] [2023-12-19 17:54:43,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292099780] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:54:43,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200533302] [2023-12-19 17:54:43,215 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-19 17:54:43,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:54:43,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:54:43,216 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 17:54:43,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-19 17:54:43,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:54:43,287 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-19 17:54:43,289 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:54:43,833 INFO L134 CoverageAnalysis]: Checked inductivity of 850 backedges. 576 proven. 272 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 17:54:43,833 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:54:44,171 INFO L134 CoverageAnalysis]: Checked inductivity of 850 backedges. 576 proven. 272 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 17:54:44,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200533302] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:54:44,172 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:54:44,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 36, 36] total 56 [2023-12-19 17:54:44,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16692086] [2023-12-19 17:54:44,172 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:54:44,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2023-12-19 17:54:44,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:54:44,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2023-12-19 17:54:44,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=706, Invalid=2374, Unknown=0, NotChecked=0, Total=3080 [2023-12-19 17:54:44,174 INFO L87 Difference]: Start difference. First operand 112 states and 115 transitions. Second operand has 56 states, 56 states have (on average 3.3392857142857144) internal successors, (187), 56 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:44,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:54:44,550 INFO L93 Difference]: Finished difference Result 255 states and 293 transitions. [2023-12-19 17:54:44,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-12-19 17:54:44,551 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 3.3392857142857144) internal successors, (187), 56 states have internal predecessors, (187), 0 states have call successors, (0), 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 111 [2023-12-19 17:54:44,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:54:44,555 INFO L225 Difference]: With dead ends: 255 [2023-12-19 17:54:44,555 INFO L226 Difference]: Without dead ends: 182 [2023-12-19 17:54:44,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 171 SyntacticMatches, 32 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1947 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1320, Invalid=3936, Unknown=0, NotChecked=0, Total=5256 [2023-12-19 17:54:44,556 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 179 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 17:54:44,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 407 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 17:54:44,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2023-12-19 17:54:44,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 114. [2023-12-19 17:54:44,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 113 states have (on average 1.0353982300884956) internal successors, (117), 113 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:44,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 117 transitions. [2023-12-19 17:54:44,561 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 117 transitions. Word has length 111 [2023-12-19 17:54:44,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:54:44,561 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 117 transitions. [2023-12-19 17:54:44,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 3.3392857142857144) internal successors, (187), 56 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:44,561 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 117 transitions. [2023-12-19 17:54:44,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-19 17:54:44,561 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:54:44,561 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:54:44,575 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-12-19 17:54:44,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:54:44,775 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:54:44,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:54:44,776 INFO L85 PathProgramCache]: Analyzing trace with hash -216017966, now seen corresponding path program 20 times [2023-12-19 17:54:44,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:54:44,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688019934] [2023-12-19 17:54:44,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:54:44,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:54:44,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:54:45,379 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 530 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:54:45,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:54:45,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688019934] [2023-12-19 17:54:45,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688019934] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:54:45,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611912346] [2023-12-19 17:54:45,379 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-19 17:54:45,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:54:45,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:54:45,380 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 17:54:45,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-19 17:54:45,449 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-19 17:54:45,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:54:45,451 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-19 17:54:45,454 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:54:46,003 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 578 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:54:46,003 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:54:46,461 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 578 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:54:46,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [611912346] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:54:46,461 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:54:46,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38, 38] total 58 [2023-12-19 17:54:46,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905180599] [2023-12-19 17:54:46,463 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:54:46,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-12-19 17:54:46,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:54:46,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-12-19 17:54:46,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=763, Invalid=2543, Unknown=0, NotChecked=0, Total=3306 [2023-12-19 17:54:46,465 INFO L87 Difference]: Start difference. First operand 114 states and 117 transitions. Second operand has 58 states, 58 states have (on average 3.2586206896551726) internal successors, (189), 58 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:46,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:54:46,890 INFO L93 Difference]: Finished difference Result 263 states and 303 transitions. [2023-12-19 17:54:46,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-12-19 17:54:46,890 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 3.2586206896551726) internal successors, (189), 58 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2023-12-19 17:54:46,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:54:46,891 INFO L225 Difference]: With dead ends: 263 [2023-12-19 17:54:46,891 INFO L226 Difference]: Without dead ends: 188 [2023-12-19 17:54:46,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 172 SyntacticMatches, 34 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2100 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1449, Invalid=4251, Unknown=0, NotChecked=0, Total=5700 [2023-12-19 17:54:46,893 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 279 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 17:54:46,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 360 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 17:54:46,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2023-12-19 17:54:46,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 116. [2023-12-19 17:54:46,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 1.0347826086956522) internal successors, (119), 115 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) [2023-12-19 17:54:46,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 119 transitions. [2023-12-19 17:54:46,902 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 119 transitions. Word has length 113 [2023-12-19 17:54:46,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:54:46,902 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 119 transitions. [2023-12-19 17:54:46,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 3.2586206896551726) internal successors, (189), 58 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:46,902 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 119 transitions. [2023-12-19 17:54:46,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-19 17:54:46,903 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:54:46,903 INFO L195 NwaCegarLoop]: trace histogram [19, 18, 18, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:54:46,913 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-19 17:54:47,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-12-19 17:54:47,108 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:54:47,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:54:47,109 INFO L85 PathProgramCache]: Analyzing trace with hash -754120521, now seen corresponding path program 21 times [2023-12-19 17:54:47,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:54:47,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288204117] [2023-12-19 17:54:47,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:54:47,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:54:47,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:54:47,515 INFO L134 CoverageAnalysis]: Checked inductivity of 920 backedges. 306 proven. 614 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:54:47,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:54:47,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288204117] [2023-12-19 17:54:47,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288204117] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:54:47,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118309609] [2023-12-19 17:54:47,516 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-19 17:54:47,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:54:47,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:54:47,531 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 17:54:47,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-19 17:54:47,612 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2023-12-19 17:54:47,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:54:47,614 INFO L262 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-19 17:54:47,616 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:54:47,687 INFO L134 CoverageAnalysis]: Checked inductivity of 920 backedges. 342 proven. 578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:54:47,688 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:54:47,885 INFO L134 CoverageAnalysis]: Checked inductivity of 920 backedges. 342 proven. 578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:54:47,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [118309609] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:54:47,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:54:47,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 24 [2023-12-19 17:54:47,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294789950] [2023-12-19 17:54:47,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:54:47,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-19 17:54:47,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:54:47,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-19 17:54:47,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=360, Unknown=0, NotChecked=0, Total=600 [2023-12-19 17:54:47,887 INFO L87 Difference]: Start difference. First operand 116 states and 119 transitions. Second operand has 25 states, 25 states have (on average 5.52) internal successors, (138), 24 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:48,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:54:48,038 INFO L93 Difference]: Finished difference Result 133 states and 137 transitions. [2023-12-19 17:54:48,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-12-19 17:54:48,039 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.52) internal successors, (138), 24 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2023-12-19 17:54:48,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:54:48,039 INFO L225 Difference]: With dead ends: 133 [2023-12-19 17:54:48,039 INFO L226 Difference]: Without dead ends: 131 [2023-12-19 17:54:48,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 208 SyntacticMatches, 35 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 905 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=719, Invalid=1261, Unknown=0, NotChecked=0, Total=1980 [2023-12-19 17:54:48,040 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 34 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 17:54:48,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 198 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 17:54:48,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2023-12-19 17:54:48,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 124. [2023-12-19 17:54:48,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 1.032520325203252) internal successors, (127), 123 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:48,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 127 transitions. [2023-12-19 17:54:48,044 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 127 transitions. Word has length 115 [2023-12-19 17:54:48,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:54:48,045 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 127 transitions. [2023-12-19 17:54:48,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.52) internal successors, (138), 24 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:48,045 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 127 transitions. [2023-12-19 17:54:48,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-19 17:54:48,045 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:54:48,045 INFO L195 NwaCegarLoop]: trace histogram [20, 19, 19, 19, 19, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:54:48,071 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-12-19 17:54:48,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-12-19 17:54:48,246 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:54:48,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:54:48,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1077719965, now seen corresponding path program 22 times [2023-12-19 17:54:48,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:54:48,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197969140] [2023-12-19 17:54:48,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:54:48,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:54:48,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:54:48,956 INFO L134 CoverageAnalysis]: Checked inductivity of 1064 backedges. 668 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:54:48,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:54:48,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197969140] [2023-12-19 17:54:48,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197969140] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:54:48,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396673036] [2023-12-19 17:54:48,957 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-19 17:54:48,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:54:48,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:54:48,958 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 17:54:48,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-19 17:54:49,028 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-19 17:54:49,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:54:49,030 INFO L262 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-19 17:54:49,031 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:54:49,711 INFO L134 CoverageAnalysis]: Checked inductivity of 1064 backedges. 722 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:54:49,711 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:54:50,017 INFO L134 CoverageAnalysis]: Checked inductivity of 1064 backedges. 722 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:54:50,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396673036] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:54:50,018 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:54:50,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 65 [2023-12-19 17:54:50,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16931309] [2023-12-19 17:54:50,018 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:54:50,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2023-12-19 17:54:50,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:54:50,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2023-12-19 17:54:50,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=970, Invalid=3190, Unknown=0, NotChecked=0, Total=4160 [2023-12-19 17:54:50,020 INFO L87 Difference]: Start difference. First operand 124 states and 127 transitions. Second operand has 65 states, 65 states have (on average 3.3230769230769233) internal successors, (216), 65 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:50,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:54:50,812 INFO L93 Difference]: Finished difference Result 366 states and 411 transitions. [2023-12-19 17:54:50,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-12-19 17:54:50,812 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 3.3230769230769233) internal successors, (216), 65 states have internal predecessors, (216), 0 states have call successors, (0), 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 [2023-12-19 17:54:50,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:54:50,813 INFO L225 Difference]: With dead ends: 366 [2023-12-19 17:54:50,813 INFO L226 Difference]: Without dead ends: 208 [2023-12-19 17:54:50,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 187 SyntacticMatches, 35 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3514 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2629, Invalid=8083, Unknown=0, NotChecked=0, Total=10712 [2023-12-19 17:54:50,815 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 399 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 17:54:50,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [399 Valid, 551 Invalid, 742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 632 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 17:54:50,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2023-12-19 17:54:50,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 128. [2023-12-19 17:54:50,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 1.031496062992126) internal successors, (131), 127 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:50,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 131 transitions. [2023-12-19 17:54:50,820 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 131 transitions. Word has length 123 [2023-12-19 17:54:50,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:54:50,820 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 131 transitions. [2023-12-19 17:54:50,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 3.3230769230769233) internal successors, (216), 65 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:50,820 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 131 transitions. [2023-12-19 17:54:50,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-19 17:54:50,821 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:54:50,821 INFO L195 NwaCegarLoop]: trace histogram [21, 20, 20, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:54:50,828 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-12-19 17:54:51,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:54:51,026 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:54:51,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:54:51,026 INFO L85 PathProgramCache]: Analyzing trace with hash -574565465, now seen corresponding path program 23 times [2023-12-19 17:54:51,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:54:51,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921677807] [2023-12-19 17:54:51,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:54:51,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:54:51,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:54:51,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1142 backedges. 380 proven. 762 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:54:51,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:54:51,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921677807] [2023-12-19 17:54:51,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921677807] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:54:51,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400423868] [2023-12-19 17:54:51,485 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-19 17:54:51,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:54:51,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:54:51,486 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 17:54:51,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-19 17:54:51,573 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2023-12-19 17:54:51,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:54:51,576 INFO L262 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 46 conjunts are in the unsatisfiable core [2023-12-19 17:54:51,577 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:54:51,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1142 backedges. 420 proven. 722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:54:51,705 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:54:52,103 INFO L134 CoverageAnalysis]: Checked inductivity of 1142 backedges. 420 proven. 722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:54:52,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [400423868] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:54:52,104 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:54:52,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 26 [2023-12-19 17:54:52,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906032489] [2023-12-19 17:54:52,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:54:52,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-19 17:54:52,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:54:52,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-19 17:54:52,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=285, Invalid=417, Unknown=0, NotChecked=0, Total=702 [2023-12-19 17:54:52,105 INFO L87 Difference]: Start difference. First operand 128 states and 131 transitions. Second operand has 27 states, 27 states have (on average 5.555555555555555) internal successors, (150), 26 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:52,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:54:52,377 INFO L93 Difference]: Finished difference Result 145 states and 149 transitions. [2023-12-19 17:54:52,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-19 17:54:52,377 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.555555555555555) internal successors, (150), 26 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2023-12-19 17:54:52,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:54:52,378 INFO L225 Difference]: With dead ends: 145 [2023-12-19 17:54:52,378 INFO L226 Difference]: Without dead ends: 143 [2023-12-19 17:54:52,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 230 SyntacticMatches, 39 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1087 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=856, Invalid=1496, Unknown=0, NotChecked=0, Total=2352 [2023-12-19 17:54:52,378 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 32 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 17:54:52,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 202 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 17:54:52,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2023-12-19 17:54:52,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 136. [2023-12-19 17:54:52,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 1.0296296296296297) internal successors, (139), 135 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:52,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 139 transitions. [2023-12-19 17:54:52,386 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 139 transitions. Word has length 127 [2023-12-19 17:54:52,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:54:52,386 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 139 transitions. [2023-12-19 17:54:52,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 5.555555555555555) internal successors, (150), 26 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:52,387 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 139 transitions. [2023-12-19 17:54:52,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-19 17:54:52,387 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:54:52,387 INFO L195 NwaCegarLoop]: trace histogram [22, 21, 21, 21, 21, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:54:52,400 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-12-19 17:54:52,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:54:52,593 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:54:52,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:54:52,593 INFO L85 PathProgramCache]: Analyzing trace with hash -407990643, now seen corresponding path program 24 times [2023-12-19 17:54:52,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:54:52,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359209202] [2023-12-19 17:54:52,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:54:52,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:54:52,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:54:53,283 INFO L134 CoverageAnalysis]: Checked inductivity of 1302 backedges. 822 proven. 480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:54:53,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:54:53,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359209202] [2023-12-19 17:54:53,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359209202] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:54:53,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424423853] [2023-12-19 17:54:53,283 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-19 17:54:53,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:54:53,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:54:53,284 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 17:54:53,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-19 17:54:53,386 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2023-12-19 17:54:53,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:54:53,388 INFO L262 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 45 conjunts are in the unsatisfiable core [2023-12-19 17:54:53,389 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:54:54,029 INFO L134 CoverageAnalysis]: Checked inductivity of 1302 backedges. 882 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:54:54,030 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:54:54,603 INFO L134 CoverageAnalysis]: Checked inductivity of 1302 backedges. 882 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:54:54,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424423853] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:54:54,603 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:54:54,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45, 45] total 71 [2023-12-19 17:54:54,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105668136] [2023-12-19 17:54:54,604 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:54:54,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2023-12-19 17:54:54,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:54:54,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2023-12-19 17:54:54,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1154, Invalid=3816, Unknown=0, NotChecked=0, Total=4970 [2023-12-19 17:54:54,605 INFO L87 Difference]: Start difference. First operand 136 states and 139 transitions. Second operand has 71 states, 71 states have (on average 3.323943661971831) internal successors, (236), 71 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:55,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:54:55,463 INFO L93 Difference]: Finished difference Result 402 states and 451 transitions. [2023-12-19 17:54:55,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2023-12-19 17:54:55,463 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 3.323943661971831) internal successors, (236), 71 states have internal predecessors, (236), 0 states have call successors, (0), 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 135 [2023-12-19 17:54:55,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:54:55,464 INFO L225 Difference]: With dead ends: 402 [2023-12-19 17:54:55,464 INFO L226 Difference]: Without dead ends: 228 [2023-12-19 17:54:55,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 205 SyntacticMatches, 39 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4243 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=3155, Invalid=9727, Unknown=0, NotChecked=0, Total=12882 [2023-12-19 17:54:55,466 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 395 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 17:54:55,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [395 Valid, 518 Invalid, 713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 603 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 17:54:55,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2023-12-19 17:54:55,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 140. [2023-12-19 17:54:55,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 1.0287769784172662) internal successors, (143), 139 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:55,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 143 transitions. [2023-12-19 17:54:55,471 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 143 transitions. Word has length 135 [2023-12-19 17:54:55,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:54:55,471 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 143 transitions. [2023-12-19 17:54:55,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 3.323943661971831) internal successors, (236), 71 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:55,472 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 143 transitions. [2023-12-19 17:54:55,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-19 17:54:55,472 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:54:55,472 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 22, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:54:55,477 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-12-19 17:54:55,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-19 17:54:55,677 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:54:55,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:54:55,678 INFO L85 PathProgramCache]: Analyzing trace with hash 287371159, now seen corresponding path program 25 times [2023-12-19 17:54:55,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:54:55,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029473000] [2023-12-19 17:54:55,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:54:55,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:54:55,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:54:56,211 INFO L134 CoverageAnalysis]: Checked inductivity of 1388 backedges. 462 proven. 926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:54:56,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:54:56,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029473000] [2023-12-19 17:54:56,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029473000] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:54:56,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351601329] [2023-12-19 17:54:56,211 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-19 17:54:56,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:54:56,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:54:56,212 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 17:54:56,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-12-19 17:54:56,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:54:56,323 INFO L262 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 50 conjunts are in the unsatisfiable core [2023-12-19 17:54:56,324 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:54:56,402 INFO L134 CoverageAnalysis]: Checked inductivity of 1388 backedges. 506 proven. 882 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:54:56,403 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:54:56,674 INFO L134 CoverageAnalysis]: Checked inductivity of 1388 backedges. 506 proven. 882 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:54:56,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351601329] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:54:56,674 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:54:56,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 28 [2023-12-19 17:54:56,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135539753] [2023-12-19 17:54:56,674 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:54:56,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-19 17:54:56,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:54:56,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-19 17:54:56,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=334, Invalid=478, Unknown=0, NotChecked=0, Total=812 [2023-12-19 17:54:56,675 INFO L87 Difference]: Start difference. First operand 140 states and 143 transitions. Second operand has 29 states, 29 states have (on average 5.586206896551724) internal successors, (162), 28 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:56,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:54:56,847 INFO L93 Difference]: Finished difference Result 157 states and 161 transitions. [2023-12-19 17:54:56,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-12-19 17:54:56,848 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.586206896551724) internal successors, (162), 28 states have internal predecessors, (162), 0 states have call successors, (0), 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 139 [2023-12-19 17:54:56,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:54:56,848 INFO L225 Difference]: With dead ends: 157 [2023-12-19 17:54:56,848 INFO L226 Difference]: Without dead ends: 155 [2023-12-19 17:54:56,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 252 SyntacticMatches, 43 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1285 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1005, Invalid=1751, Unknown=0, NotChecked=0, Total=2756 [2023-12-19 17:54:56,849 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 61 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 17:54:56,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 201 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 17:54:56,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2023-12-19 17:54:56,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 148. [2023-12-19 17:54:56,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 1.0272108843537415) internal successors, (151), 147 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:56,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 151 transitions. [2023-12-19 17:54:56,861 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 151 transitions. Word has length 139 [2023-12-19 17:54:56,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:54:56,861 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 151 transitions. [2023-12-19 17:54:56,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 5.586206896551724) internal successors, (162), 28 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:56,861 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 151 transitions. [2023-12-19 17:54:56,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-19 17:54:56,862 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:54:56,862 INFO L195 NwaCegarLoop]: trace histogram [24, 23, 23, 23, 23, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:54:56,867 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-12-19 17:54:57,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-19 17:54:57,067 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:54:57,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:54:57,068 INFO L85 PathProgramCache]: Analyzing trace with hash -219432323, now seen corresponding path program 26 times [2023-12-19 17:54:57,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:54:57,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854194881] [2023-12-19 17:54:57,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:54:57,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:54:57,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:54:57,934 INFO L134 CoverageAnalysis]: Checked inductivity of 1564 backedges. 992 proven. 572 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:54:57,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:54:57,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854194881] [2023-12-19 17:54:57,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854194881] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:54:57,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153330016] [2023-12-19 17:54:57,934 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-19 17:54:57,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:54:57,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:54:57,935 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 17:54:57,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-12-19 17:54:58,019 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-19 17:54:58,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:54:58,021 INFO L262 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-19 17:54:58,023 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:54:58,644 INFO L134 CoverageAnalysis]: Checked inductivity of 1564 backedges. 1056 proven. 506 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 17:54:58,644 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:54:59,232 INFO L134 CoverageAnalysis]: Checked inductivity of 1564 backedges. 1056 proven. 506 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 17:54:59,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1153330016] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:54:59,232 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:54:59,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 48, 48] total 74 [2023-12-19 17:54:59,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827711580] [2023-12-19 17:54:59,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:54:59,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2023-12-19 17:54:59,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:54:59,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2023-12-19 17:54:59,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1228, Invalid=4174, Unknown=0, NotChecked=0, Total=5402 [2023-12-19 17:54:59,234 INFO L87 Difference]: Start difference. First operand 148 states and 151 transitions. Second operand has 74 states, 74 states have (on average 3.3378378378378377) internal successors, (247), 74 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:59,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:54:59,740 INFO L93 Difference]: Finished difference Result 339 states and 389 transitions. [2023-12-19 17:54:59,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-19 17:54:59,740 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 3.3378378378378377) internal successors, (247), 74 states have internal predecessors, (247), 0 states have call successors, (0), 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 147 [2023-12-19 17:54:59,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:54:59,741 INFO L225 Difference]: With dead ends: 339 [2023-12-19 17:54:59,741 INFO L226 Difference]: Without dead ends: 242 [2023-12-19 17:54:59,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 225 SyntacticMatches, 44 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3471 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2334, Invalid=6978, Unknown=0, NotChecked=0, Total=9312 [2023-12-19 17:54:59,742 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 338 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 17:54:59,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 475 Invalid, 644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 17:54:59,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2023-12-19 17:54:59,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 150. [2023-12-19 17:54:59,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 1.0268456375838926) internal successors, (153), 149 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:59,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 153 transitions. [2023-12-19 17:54:59,748 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 153 transitions. Word has length 147 [2023-12-19 17:54:59,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:54:59,748 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 153 transitions. [2023-12-19 17:54:59,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 3.3378378378378377) internal successors, (247), 74 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:54:59,748 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 153 transitions. [2023-12-19 17:54:59,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-19 17:54:59,749 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:54:59,749 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:54:59,756 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-12-19 17:54:59,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-19 17:54:59,954 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:54:59,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:54:59,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1636862430, now seen corresponding path program 27 times [2023-12-19 17:54:59,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:54:59,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992261664] [2023-12-19 17:54:59,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:54:59,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:54:59,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:55:00,951 INFO L134 CoverageAnalysis]: Checked inductivity of 1610 backedges. 992 proven. 618 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:55:00,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:55:00,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992261664] [2023-12-19 17:55:00,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992261664] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:55:00,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905040607] [2023-12-19 17:55:00,951 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-19 17:55:00,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:55:00,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:55:00,952 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 17:55:00,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-12-19 17:55:01,070 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2023-12-19 17:55:01,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:55:01,073 INFO L262 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 50 conjunts are in the unsatisfiable core [2023-12-19 17:55:01,075 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:55:01,796 INFO L134 CoverageAnalysis]: Checked inductivity of 1610 backedges. 1058 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:55:01,796 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:55:02,261 INFO L134 CoverageAnalysis]: Checked inductivity of 1610 backedges. 1058 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:55:02,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905040607] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:55:02,261 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:55:02,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50, 50] total 76 [2023-12-19 17:55:02,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343210769] [2023-12-19 17:55:02,262 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:55:02,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2023-12-19 17:55:02,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:55:02,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2023-12-19 17:55:02,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1303, Invalid=4397, Unknown=0, NotChecked=0, Total=5700 [2023-12-19 17:55:02,263 INFO L87 Difference]: Start difference. First operand 150 states and 153 transitions. Second operand has 76 states, 76 states have (on average 3.276315789473684) internal successors, (249), 76 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:55:02,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:55:02,784 INFO L93 Difference]: Finished difference Result 347 states and 399 transitions. [2023-12-19 17:55:02,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-12-19 17:55:02,785 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 3.276315789473684) internal successors, (249), 76 states have internal predecessors, (249), 0 states have call successors, (0), 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 149 [2023-12-19 17:55:02,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:55:02,785 INFO L225 Difference]: With dead ends: 347 [2023-12-19 17:55:02,785 INFO L226 Difference]: Without dead ends: 248 [2023-12-19 17:55:02,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 226 SyntacticMatches, 46 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3672 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2505, Invalid=7395, Unknown=0, NotChecked=0, Total=9900 [2023-12-19 17:55:02,786 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 336 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 17:55:02,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 623 Invalid, 794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 17:55:02,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2023-12-19 17:55:02,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 152. [2023-12-19 17:55:02,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 1.0264900662251655) internal successors, (155), 151 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:55:02,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 155 transitions. [2023-12-19 17:55:02,792 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 155 transitions. Word has length 149 [2023-12-19 17:55:02,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:55:02,793 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 155 transitions. [2023-12-19 17:55:02,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 3.276315789473684) internal successors, (249), 76 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:55:02,793 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 155 transitions. [2023-12-19 17:55:02,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-19 17:55:02,793 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:55:02,793 INFO L195 NwaCegarLoop]: trace histogram [25, 24, 24, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:55:02,798 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-12-19 17:55:02,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:55:02,998 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:55:02,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:55:02,999 INFO L85 PathProgramCache]: Analyzing trace with hash 2012404871, now seen corresponding path program 28 times [2023-12-19 17:55:02,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:55:02,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8843749] [2023-12-19 17:55:02,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:55:02,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:55:03,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:55:03,574 INFO L134 CoverageAnalysis]: Checked inductivity of 1658 backedges. 552 proven. 1106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:55:03,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:55:03,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8843749] [2023-12-19 17:55:03,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8843749] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:55:03,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858849279] [2023-12-19 17:55:03,575 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-19 17:55:03,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:55:03,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:55:03,576 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 17:55:03,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-12-19 17:55:03,668 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-19 17:55:03,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:55:03,677 INFO L262 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 54 conjunts are in the unsatisfiable core [2023-12-19 17:55:03,679 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:55:03,805 INFO L134 CoverageAnalysis]: Checked inductivity of 1658 backedges. 600 proven. 1058 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:55:03,805 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:55:04,234 INFO L134 CoverageAnalysis]: Checked inductivity of 1658 backedges. 600 proven. 1058 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:55:04,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858849279] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:55:04,234 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:55:04,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 30 [2023-12-19 17:55:04,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527356077] [2023-12-19 17:55:04,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:55:04,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-19 17:55:04,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:55:04,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-19 17:55:04,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=387, Invalid=543, Unknown=0, NotChecked=0, Total=930 [2023-12-19 17:55:04,235 INFO L87 Difference]: Start difference. First operand 152 states and 155 transitions. Second operand has 31 states, 31 states have (on average 5.612903225806452) internal successors, (174), 30 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:55:04,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:55:04,606 INFO L93 Difference]: Finished difference Result 169 states and 173 transitions. [2023-12-19 17:55:04,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-12-19 17:55:04,606 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.612903225806452) internal successors, (174), 30 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2023-12-19 17:55:04,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:55:04,607 INFO L225 Difference]: With dead ends: 169 [2023-12-19 17:55:04,607 INFO L226 Difference]: Without dead ends: 167 [2023-12-19 17:55:04,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 274 SyntacticMatches, 47 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1499 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1166, Invalid=2026, Unknown=0, NotChecked=0, Total=3192 [2023-12-19 17:55:04,608 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 65 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 17:55:04,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 215 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 17:55:04,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2023-12-19 17:55:04,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 160. [2023-12-19 17:55:04,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 1.0251572327044025) internal successors, (163), 159 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:55:04,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 163 transitions. [2023-12-19 17:55:04,614 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 163 transitions. Word has length 151 [2023-12-19 17:55:04,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:55:04,614 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 163 transitions. [2023-12-19 17:55:04,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.612903225806452) internal successors, (174), 30 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:55:04,615 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 163 transitions. [2023-12-19 17:55:04,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-12-19 17:55:04,615 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:55:04,615 INFO L195 NwaCegarLoop]: trace histogram [26, 25, 25, 25, 25, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:55:04,625 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-12-19 17:55:04,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:55:04,821 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:55:04,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:55:04,821 INFO L85 PathProgramCache]: Analyzing trace with hash 255440749, now seen corresponding path program 29 times [2023-12-19 17:55:04,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:55:04,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229156381] [2023-12-19 17:55:04,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:55:04,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:55:04,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:55:05,746 INFO L134 CoverageAnalysis]: Checked inductivity of 1850 backedges. 1178 proven. 672 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:55:05,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:55:05,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229156381] [2023-12-19 17:55:05,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229156381] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:55:05,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642545192] [2023-12-19 17:55:05,747 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-19 17:55:05,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:55:05,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:55:05,749 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 17:55:05,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-12-19 17:55:05,861 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 26 check-sat command(s) [2023-12-19 17:55:05,862 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:55:05,864 INFO L262 TraceCheckSpWp]: Trace formula consists of 585 conjuncts, 53 conjunts are in the unsatisfiable core [2023-12-19 17:55:05,867 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:55:06,639 INFO L134 CoverageAnalysis]: Checked inductivity of 1850 backedges. 1250 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:55:06,640 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:55:07,235 INFO L134 CoverageAnalysis]: Checked inductivity of 1850 backedges. 1250 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:55:07,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642545192] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:55:07,236 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:55:07,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53, 53] total 83 [2023-12-19 17:55:07,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706396127] [2023-12-19 17:55:07,236 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:55:07,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2023-12-19 17:55:07,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:55:07,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2023-12-19 17:55:07,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1570, Invalid=5236, Unknown=0, NotChecked=0, Total=6806 [2023-12-19 17:55:07,254 INFO L87 Difference]: Start difference. First operand 160 states and 163 transitions. Second operand has 83 states, 83 states have (on average 3.325301204819277) internal successors, (276), 83 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:55:08,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:55:08,099 INFO L93 Difference]: Finished difference Result 474 states and 531 transitions. [2023-12-19 17:55:08,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2023-12-19 17:55:08,099 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 3.325301204819277) internal successors, (276), 83 states have internal predecessors, (276), 0 states have call successors, (0), 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 159 [2023-12-19 17:55:08,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:55:08,100 INFO L225 Difference]: With dead ends: 474 [2023-12-19 17:55:08,100 INFO L226 Difference]: Without dead ends: 268 [2023-12-19 17:55:08,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 241 SyntacticMatches, 47 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5905 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=4351, Invalid=13471, Unknown=0, NotChecked=0, Total=17822 [2023-12-19 17:55:08,103 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 435 mSDsluCounter, 759 mSDsCounter, 0 mSdLazyCounter, 900 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 1022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 17:55:08,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [435 Valid, 812 Invalid, 1022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 900 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 17:55:08,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2023-12-19 17:55:08,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 164. [2023-12-19 17:55:08,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 163 states have (on average 1.0245398773006136) internal successors, (167), 163 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) [2023-12-19 17:55:08,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 167 transitions. [2023-12-19 17:55:08,110 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 167 transitions. Word has length 159 [2023-12-19 17:55:08,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:55:08,110 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 167 transitions. [2023-12-19 17:55:08,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 3.325301204819277) internal successors, (276), 83 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:55:08,110 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 167 transitions. [2023-12-19 17:55:08,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-19 17:55:08,111 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:55:08,111 INFO L195 NwaCegarLoop]: trace histogram [27, 26, 26, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:55:08,116 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-12-19 17:55:08,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:55:08,317 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:55:08,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:55:08,317 INFO L85 PathProgramCache]: Analyzing trace with hash -105112969, now seen corresponding path program 30 times [2023-12-19 17:55:08,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:55:08,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498295405] [2023-12-19 17:55:08,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:55:08,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:55:08,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:55:08,929 INFO L134 CoverageAnalysis]: Checked inductivity of 1952 backedges. 650 proven. 1302 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:55:08,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:55:08,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498295405] [2023-12-19 17:55:08,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498295405] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:55:08,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812417780] [2023-12-19 17:55:08,929 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-19 17:55:08,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:55:08,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:55:08,935 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 17:55:08,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-12-19 17:55:09,044 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) [2023-12-19 17:55:09,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:55:09,047 INFO L262 TraceCheckSpWp]: Trace formula consists of 605 conjuncts, 58 conjunts are in the unsatisfiable core [2023-12-19 17:55:09,049 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:55:09,220 INFO L134 CoverageAnalysis]: Checked inductivity of 1952 backedges. 702 proven. 1250 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:55:09,220 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:55:09,723 INFO L134 CoverageAnalysis]: Checked inductivity of 1952 backedges. 702 proven. 1250 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:55:09,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812417780] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:55:09,723 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:55:09,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 32 [2023-12-19 17:55:09,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056431513] [2023-12-19 17:55:09,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:55:09,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-19 17:55:09,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:55:09,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-19 17:55:09,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=444, Invalid=612, Unknown=0, NotChecked=0, Total=1056 [2023-12-19 17:55:09,725 INFO L87 Difference]: Start difference. First operand 164 states and 167 transitions. Second operand has 33 states, 33 states have (on average 5.636363636363637) internal successors, (186), 32 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:55:10,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:55:10,012 INFO L93 Difference]: Finished difference Result 181 states and 185 transitions. [2023-12-19 17:55:10,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2023-12-19 17:55:10,012 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.636363636363637) internal successors, (186), 32 states have internal predecessors, (186), 0 states have call successors, (0), 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 163 [2023-12-19 17:55:10,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:55:10,013 INFO L225 Difference]: With dead ends: 181 [2023-12-19 17:55:10,013 INFO L226 Difference]: Without dead ends: 179 [2023-12-19 17:55:10,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 296 SyntacticMatches, 51 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1729 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1339, Invalid=2321, Unknown=0, NotChecked=0, Total=3660 [2023-12-19 17:55:10,014 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 38 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 17:55:10,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 283 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 17:55:10,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2023-12-19 17:55:10,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 172. [2023-12-19 17:55:10,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 171 states have (on average 1.023391812865497) internal successors, (175), 171 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:55:10,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 175 transitions. [2023-12-19 17:55:10,021 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 175 transitions. Word has length 163 [2023-12-19 17:55:10,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:55:10,021 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 175 transitions. [2023-12-19 17:55:10,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 5.636363636363637) internal successors, (186), 32 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:55:10,021 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 175 transitions. [2023-12-19 17:55:10,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-19 17:55:10,021 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:55:10,022 INFO L195 NwaCegarLoop]: trace histogram [28, 27, 27, 27, 27, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:55:10,027 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-12-19 17:55:10,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-12-19 17:55:10,227 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:55:10,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:55:10,227 INFO L85 PathProgramCache]: Analyzing trace with hash 111019357, now seen corresponding path program 31 times [2023-12-19 17:55:10,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:55:10,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659588421] [2023-12-19 17:55:10,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:55:10,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:55:10,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:55:11,460 INFO L134 CoverageAnalysis]: Checked inductivity of 2160 backedges. 1380 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:55:11,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:55:11,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659588421] [2023-12-19 17:55:11,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659588421] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:55:11,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654147406] [2023-12-19 17:55:11,461 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-19 17:55:11,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:55:11,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:55:11,462 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 17:55:11,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-12-19 17:55:11,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:55:11,554 INFO L262 TraceCheckSpWp]: Trace formula consists of 629 conjuncts, 56 conjunts are in the unsatisfiable core [2023-12-19 17:55:11,556 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:55:12,544 INFO L134 CoverageAnalysis]: Checked inductivity of 2160 backedges. 1456 proven. 702 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 17:55:12,545 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:55:13,193 INFO L134 CoverageAnalysis]: Checked inductivity of 2160 backedges. 1456 proven. 702 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 17:55:13,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654147406] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:55:13,193 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:55:13,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 56, 56] total 86 [2023-12-19 17:55:13,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867779293] [2023-12-19 17:55:13,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:55:13,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2023-12-19 17:55:13,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:55:13,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2023-12-19 17:55:13,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1656, Invalid=5654, Unknown=0, NotChecked=0, Total=7310 [2023-12-19 17:55:13,195 INFO L87 Difference]: Start difference. First operand 172 states and 175 transitions. Second operand has 86 states, 86 states have (on average 3.3372093023255816) internal successors, (287), 86 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:55:13,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:55:13,743 INFO L93 Difference]: Finished difference Result 395 states and 453 transitions. [2023-12-19 17:55:13,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-12-19 17:55:13,745 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 3.3372093023255816) internal successors, (287), 86 states have internal predecessors, (287), 0 states have call successors, (0), 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 171 [2023-12-19 17:55:13,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:55:13,747 INFO L225 Difference]: With dead ends: 395 [2023-12-19 17:55:13,747 INFO L226 Difference]: Without dead ends: 282 [2023-12-19 17:55:13,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 261 SyntacticMatches, 52 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4727 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=3170, Invalid=9486, Unknown=0, NotChecked=0, Total=12656 [2023-12-19 17:55:13,748 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 341 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 17:55:13,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [341 Valid, 556 Invalid, 729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 637 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 17:55:13,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2023-12-19 17:55:13,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 174. [2023-12-19 17:55:13,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 1.023121387283237) internal successors, (177), 173 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:55:13,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 177 transitions. [2023-12-19 17:55:13,773 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 177 transitions. Word has length 171 [2023-12-19 17:55:13,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:55:13,773 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 177 transitions. [2023-12-19 17:55:13,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 3.3372093023255816) internal successors, (287), 86 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:55:13,773 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 177 transitions. [2023-12-19 17:55:13,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-12-19 17:55:13,774 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:55:13,774 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:55:13,781 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-12-19 17:55:13,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:55:13,979 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:55:13,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:55:13,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1803394558, now seen corresponding path program 32 times [2023-12-19 17:55:13,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:55:13,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660932519] [2023-12-19 17:55:13,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:55:13,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:55:14,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:55:15,166 INFO L134 CoverageAnalysis]: Checked inductivity of 2214 backedges. 1380 proven. 834 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:55:15,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:55:15,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660932519] [2023-12-19 17:55:15,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660932519] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:55:15,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026822203] [2023-12-19 17:55:15,166 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-19 17:55:15,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:55:15,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:55:15,167 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 17:55:15,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-12-19 17:55:15,268 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-19 17:55:15,269 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:55:15,271 INFO L262 TraceCheckSpWp]: Trace formula consists of 639 conjuncts, 58 conjunts are in the unsatisfiable core [2023-12-19 17:55:15,273 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:55:16,250 INFO L134 CoverageAnalysis]: Checked inductivity of 2214 backedges. 1458 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:55:16,250 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:55:16,830 INFO L134 CoverageAnalysis]: Checked inductivity of 2214 backedges. 1458 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:55:16,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2026822203] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:55:16,831 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:55:16,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58, 58] total 88 [2023-12-19 17:55:16,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264004921] [2023-12-19 17:55:16,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:55:16,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2023-12-19 17:55:16,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:55:16,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2023-12-19 17:55:16,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1743, Invalid=5913, Unknown=0, NotChecked=0, Total=7656 [2023-12-19 17:55:16,833 INFO L87 Difference]: Start difference. First operand 174 states and 177 transitions. Second operand has 88 states, 88 states have (on average 3.284090909090909) internal successors, (289), 88 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) [2023-12-19 17:55:17,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:55:17,536 INFO L93 Difference]: Finished difference Result 403 states and 463 transitions. [2023-12-19 17:55:17,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-12-19 17:55:17,536 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 3.284090909090909) internal successors, (289), 88 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 173 [2023-12-19 17:55:17,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:55:17,537 INFO L225 Difference]: With dead ends: 403 [2023-12-19 17:55:17,537 INFO L226 Difference]: Without dead ends: 288 [2023-12-19 17:55:17,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 262 SyntacticMatches, 54 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4960 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=3369, Invalid=9971, Unknown=0, NotChecked=0, Total=13340 [2023-12-19 17:55:17,540 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 380 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 17:55:17,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 572 Invalid, 765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 662 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 17:55:17,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2023-12-19 17:55:17,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 176. [2023-12-19 17:55:17,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 175 states have (on average 1.022857142857143) internal successors, (179), 175 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:55:17,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 179 transitions. [2023-12-19 17:55:17,548 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 179 transitions. Word has length 173 [2023-12-19 17:55:17,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:55:17,548 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 179 transitions. [2023-12-19 17:55:17,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 88 states have (on average 3.284090909090909) internal successors, (289), 88 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) [2023-12-19 17:55:17,548 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 179 transitions. [2023-12-19 17:55:17,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-12-19 17:55:17,549 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:55:17,549 INFO L195 NwaCegarLoop]: trace histogram [29, 28, 28, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:55:17,556 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-12-19 17:55:17,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:55:17,750 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:55:17,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:55:17,750 INFO L85 PathProgramCache]: Analyzing trace with hash 985803111, now seen corresponding path program 33 times [2023-12-19 17:55:17,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:55:17,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626857464] [2023-12-19 17:55:17,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:55:17,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:55:17,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:55:18,538 INFO L134 CoverageAnalysis]: Checked inductivity of 2270 backedges. 756 proven. 1514 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:55:18,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:55:18,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626857464] [2023-12-19 17:55:18,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626857464] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:55:18,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281562833] [2023-12-19 17:55:18,538 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-19 17:55:18,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:55:18,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:55:18,539 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 17:55:18,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-12-19 17:55:18,661 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 29 check-sat command(s) [2023-12-19 17:55:18,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:55:18,664 INFO L262 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 62 conjunts are in the unsatisfiable core [2023-12-19 17:55:18,666 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:55:18,763 INFO L134 CoverageAnalysis]: Checked inductivity of 2270 backedges. 812 proven. 1458 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:55:18,764 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:55:19,286 INFO L134 CoverageAnalysis]: Checked inductivity of 2270 backedges. 812 proven. 1458 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:55:19,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281562833] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:55:19,287 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:55:19,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 34 [2023-12-19 17:55:19,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344204322] [2023-12-19 17:55:19,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:55:19,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-19 17:55:19,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:55:19,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-19 17:55:19,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=505, Invalid=685, Unknown=0, NotChecked=0, Total=1190 [2023-12-19 17:55:19,288 INFO L87 Difference]: Start difference. First operand 176 states and 179 transitions. Second operand has 35 states, 35 states have (on average 5.6571428571428575) internal successors, (198), 34 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:55:19,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:55:19,675 INFO L93 Difference]: Finished difference Result 193 states and 197 transitions. [2023-12-19 17:55:19,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2023-12-19 17:55:19,675 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.6571428571428575) internal successors, (198), 34 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2023-12-19 17:55:19,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:55:19,676 INFO L225 Difference]: With dead ends: 193 [2023-12-19 17:55:19,676 INFO L226 Difference]: Without dead ends: 191 [2023-12-19 17:55:19,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 318 SyntacticMatches, 55 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1975 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1524, Invalid=2636, Unknown=0, NotChecked=0, Total=4160 [2023-12-19 17:55:19,677 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 38 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 17:55:19,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 321 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 17:55:19,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2023-12-19 17:55:19,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 184. [2023-12-19 17:55:19,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 183 states have (on average 1.0218579234972678) internal successors, (187), 183 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:55:19,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 187 transitions. [2023-12-19 17:55:19,684 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 187 transitions. Word has length 175 [2023-12-19 17:55:19,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:55:19,685 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 187 transitions. [2023-12-19 17:55:19,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 5.6571428571428575) internal successors, (198), 34 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:55:19,685 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 187 transitions. [2023-12-19 17:55:19,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-12-19 17:55:19,685 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:55:19,685 INFO L195 NwaCegarLoop]: trace histogram [30, 29, 29, 29, 29, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:55:19,691 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2023-12-19 17:55:19,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-12-19 17:55:19,891 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:55:19,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:55:19,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1612831667, now seen corresponding path program 34 times [2023-12-19 17:55:19,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:55:19,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502615664] [2023-12-19 17:55:19,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:55:19,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:55:19,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:55:21,297 INFO L134 CoverageAnalysis]: Checked inductivity of 2494 backedges. 1598 proven. 896 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:55:21,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:55:21,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502615664] [2023-12-19 17:55:21,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502615664] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:55:21,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680018606] [2023-12-19 17:55:21,297 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-19 17:55:21,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:55:21,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:55:21,298 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 17:55:21,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-12-19 17:55:21,395 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-19 17:55:21,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:55:21,398 INFO L262 TraceCheckSpWp]: Trace formula consists of 673 conjuncts, 61 conjunts are in the unsatisfiable core [2023-12-19 17:55:21,400 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:55:22,307 INFO L134 CoverageAnalysis]: Checked inductivity of 2494 backedges. 1682 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:55:22,308 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:55:23,224 INFO L134 CoverageAnalysis]: Checked inductivity of 2494 backedges. 1682 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:55:23,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680018606] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:55:23,225 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:55:23,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61, 61] total 95 [2023-12-19 17:55:23,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928613513] [2023-12-19 17:55:23,225 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:55:23,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2023-12-19 17:55:23,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:55:23,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2023-12-19 17:55:23,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2050, Invalid=6880, Unknown=0, NotChecked=0, Total=8930 [2023-12-19 17:55:23,227 INFO L87 Difference]: Start difference. First operand 184 states and 187 transitions. Second operand has 95 states, 95 states have (on average 3.3263157894736843) internal successors, (316), 95 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:55:24,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:55:24,573 INFO L93 Difference]: Finished difference Result 546 states and 611 transitions. [2023-12-19 17:55:24,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2023-12-19 17:55:24,573 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 3.3263157894736843) internal successors, (316), 95 states have internal predecessors, (316), 0 states have call successors, (0), 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 183 [2023-12-19 17:55:24,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:55:24,581 INFO L225 Difference]: With dead ends: 546 [2023-12-19 17:55:24,581 INFO L226 Difference]: Without dead ends: 308 [2023-12-19 17:55:24,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 277 SyntacticMatches, 55 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7839 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=5739, Invalid=17823, Unknown=0, NotChecked=0, Total=23562 [2023-12-19 17:55:24,584 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 543 mSDsluCounter, 902 mSDsCounter, 0 mSdLazyCounter, 1067 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 1218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 1067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 17:55:24,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [543 Valid, 963 Invalid, 1218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 1067 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 17:55:24,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2023-12-19 17:55:24,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 188. [2023-12-19 17:55:24,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 1.0213903743315509) internal successors, (191), 187 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:55:24,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 191 transitions. [2023-12-19 17:55:24,617 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 191 transitions. Word has length 183 [2023-12-19 17:55:24,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:55:24,617 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 191 transitions. [2023-12-19 17:55:24,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 95 states have (on average 3.3263157894736843) internal successors, (316), 95 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:55:24,618 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 191 transitions. [2023-12-19 17:55:24,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2023-12-19 17:55:24,618 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:55:24,618 INFO L195 NwaCegarLoop]: trace histogram [31, 30, 30, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:55:24,640 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2023-12-19 17:55:24,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-12-19 17:55:24,838 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:55:24,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:55:24,838 INFO L85 PathProgramCache]: Analyzing trace with hash 2081065303, now seen corresponding path program 35 times [2023-12-19 17:55:24,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:55:24,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682407829] [2023-12-19 17:55:24,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:55:24,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:55:24,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:55:25,718 INFO L134 CoverageAnalysis]: Checked inductivity of 2612 backedges. 870 proven. 1742 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:55:25,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:55:25,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682407829] [2023-12-19 17:55:25,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682407829] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:55:25,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007166725] [2023-12-19 17:55:25,718 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-19 17:55:25,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:55:25,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:55:25,720 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 17:55:25,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-12-19 17:55:25,896 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2023-12-19 17:55:25,897 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:55:25,901 INFO L262 TraceCheckSpWp]: Trace formula consists of 693 conjuncts, 66 conjunts are in the unsatisfiable core [2023-12-19 17:55:25,904 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:55:26,130 INFO L134 CoverageAnalysis]: Checked inductivity of 2612 backedges. 930 proven. 1682 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:55:26,130 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:55:26,989 INFO L134 CoverageAnalysis]: Checked inductivity of 2612 backedges. 930 proven. 1682 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:55:26,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1007166725] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:55:26,989 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:55:26,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 36 [2023-12-19 17:55:26,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506681555] [2023-12-19 17:55:26,990 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:55:26,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-12-19 17:55:26,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:55:26,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-12-19 17:55:26,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=570, Invalid=762, Unknown=0, NotChecked=0, Total=1332 [2023-12-19 17:55:26,991 INFO L87 Difference]: Start difference. First operand 188 states and 191 transitions. Second operand has 37 states, 37 states have (on average 5.675675675675675) internal successors, (210), 36 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:55:27,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:55:27,458 INFO L93 Difference]: Finished difference Result 205 states and 209 transitions. [2023-12-19 17:55:27,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2023-12-19 17:55:27,459 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.675675675675675) internal successors, (210), 36 states have internal predecessors, (210), 0 states have call successors, (0), 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 187 [2023-12-19 17:55:27,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:55:27,459 INFO L225 Difference]: With dead ends: 205 [2023-12-19 17:55:27,459 INFO L226 Difference]: Without dead ends: 203 [2023-12-19 17:55:27,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 340 SyntacticMatches, 59 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2237 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1721, Invalid=2971, Unknown=0, NotChecked=0, Total=4692 [2023-12-19 17:55:27,460 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 44 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 17:55:27,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 306 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 17:55:27,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2023-12-19 17:55:27,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 196. [2023-12-19 17:55:27,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 1.0205128205128204) internal successors, (199), 195 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:55:27,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 199 transitions. [2023-12-19 17:55:27,469 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 199 transitions. Word has length 187 [2023-12-19 17:55:27,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:55:27,469 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 199 transitions. [2023-12-19 17:55:27,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 5.675675675675675) internal successors, (210), 36 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:55:27,469 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 199 transitions. [2023-12-19 17:55:27,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-12-19 17:55:27,470 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:55:27,470 INFO L195 NwaCegarLoop]: trace histogram [32, 31, 31, 31, 31, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:55:27,476 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2023-12-19 17:55:27,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-12-19 17:55:27,671 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:55:27,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:55:27,671 INFO L85 PathProgramCache]: Analyzing trace with hash 2122290237, now seen corresponding path program 36 times [2023-12-19 17:55:27,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:55:27,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215881747] [2023-12-19 17:55:27,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:55:27,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:55:27,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:55:29,314 INFO L134 CoverageAnalysis]: Checked inductivity of 2852 backedges. 1832 proven. 1020 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:55:29,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:55:29,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215881747] [2023-12-19 17:55:29,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215881747] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:55:29,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298165361] [2023-12-19 17:55:29,315 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-19 17:55:29,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:55:29,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:55:29,328 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 17:55:29,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-12-19 17:55:29,459 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 32 check-sat command(s) [2023-12-19 17:55:29,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:55:29,462 INFO L262 TraceCheckSpWp]: Trace formula consists of 717 conjuncts, 65 conjunts are in the unsatisfiable core [2023-12-19 17:55:29,464 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:55:30,880 INFO L134 CoverageAnalysis]: Checked inductivity of 2852 backedges. 1922 proven. 930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:55:30,880 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:55:31,623 INFO L134 CoverageAnalysis]: Checked inductivity of 2852 backedges. 1922 proven. 930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:55:31,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298165361] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:55:31,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:55:31,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65, 65] total 101 [2023-12-19 17:55:31,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490619239] [2023-12-19 17:55:31,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:55:31,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2023-12-19 17:55:31,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:55:31,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2023-12-19 17:55:31,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2314, Invalid=7786, Unknown=0, NotChecked=0, Total=10100 [2023-12-19 17:55:31,626 INFO L87 Difference]: Start difference. First operand 196 states and 199 transitions. Second operand has 101 states, 101 states have (on average 3.3267326732673266) internal successors, (336), 101 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) [2023-12-19 17:55:32,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:55:32,878 INFO L93 Difference]: Finished difference Result 582 states and 651 transitions. [2023-12-19 17:55:32,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2023-12-19 17:55:32,879 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 3.3267326732673266) internal successors, (336), 101 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 195 [2023-12-19 17:55:32,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:55:32,879 INFO L225 Difference]: With dead ends: 582 [2023-12-19 17:55:32,880 INFO L226 Difference]: Without dead ends: 328 [2023-12-19 17:55:32,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 516 GetRequests, 295 SyntacticMatches, 59 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8908 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=6505, Invalid=20227, Unknown=0, NotChecked=0, Total=26732 [2023-12-19 17:55:32,881 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 559 mSDsluCounter, 896 mSDsCounter, 0 mSdLazyCounter, 1071 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 559 SdHoareTripleChecker+Valid, 961 SdHoareTripleChecker+Invalid, 1227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 1071 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 17:55:32,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [559 Valid, 961 Invalid, 1227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 1071 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 17:55:32,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2023-12-19 17:55:32,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 200. [2023-12-19 17:55:32,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 199 states have (on average 1.020100502512563) internal successors, (203), 199 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:55:32,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 203 transitions. [2023-12-19 17:55:32,892 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 203 transitions. Word has length 195 [2023-12-19 17:55:32,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:55:32,892 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 203 transitions. [2023-12-19 17:55:32,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 3.3267326732673266) internal successors, (336), 101 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) [2023-12-19 17:55:32,892 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 203 transitions. [2023-12-19 17:55:32,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2023-12-19 17:55:32,893 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:55:32,893 INFO L195 NwaCegarLoop]: trace histogram [33, 32, 32, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:55:32,911 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2023-12-19 17:55:33,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-12-19 17:55:33,098 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:55:33,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:55:33,099 INFO L85 PathProgramCache]: Analyzing trace with hash 2069543495, now seen corresponding path program 37 times [2023-12-19 17:55:33,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:55:33,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220471983] [2023-12-19 17:55:33,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:55:33,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:55:33,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:55:34,113 INFO L134 CoverageAnalysis]: Checked inductivity of 2978 backedges. 992 proven. 1986 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:55:34,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:55:34,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220471983] [2023-12-19 17:55:34,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220471983] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:55:34,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950385595] [2023-12-19 17:55:34,114 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-19 17:55:34,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:55:34,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:55:34,115 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 17:55:34,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-12-19 17:55:34,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:55:34,219 INFO L262 TraceCheckSpWp]: Trace formula consists of 737 conjuncts, 70 conjunts are in the unsatisfiable core [2023-12-19 17:55:34,221 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:55:34,375 INFO L134 CoverageAnalysis]: Checked inductivity of 2978 backedges. 1056 proven. 1922 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:55:34,375 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:55:34,957 INFO L134 CoverageAnalysis]: Checked inductivity of 2978 backedges. 1056 proven. 1922 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:55:34,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1950385595] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:55:34,958 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:55:34,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 38 [2023-12-19 17:55:34,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872944589] [2023-12-19 17:55:34,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:55:34,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-12-19 17:55:34,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:55:34,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-12-19 17:55:34,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=639, Invalid=843, Unknown=0, NotChecked=0, Total=1482 [2023-12-19 17:55:34,961 INFO L87 Difference]: Start difference. First operand 200 states and 203 transitions. Second operand has 39 states, 39 states have (on average 5.6923076923076925) internal successors, (222), 38 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:55:35,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:55:35,266 INFO L93 Difference]: Finished difference Result 217 states and 221 transitions. [2023-12-19 17:55:35,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2023-12-19 17:55:35,266 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 5.6923076923076925) internal successors, (222), 38 states have internal predecessors, (222), 0 states have call successors, (0), 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 199 [2023-12-19 17:55:35,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:55:35,267 INFO L225 Difference]: With dead ends: 217 [2023-12-19 17:55:35,267 INFO L226 Difference]: Without dead ends: 215 [2023-12-19 17:55:35,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 362 SyntacticMatches, 63 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2515 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1930, Invalid=3326, Unknown=0, NotChecked=0, Total=5256 [2023-12-19 17:55:35,267 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 44 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 17:55:35,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 334 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 17:55:35,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2023-12-19 17:55:35,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 208. [2023-12-19 17:55:35,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 207 states have (on average 1.0193236714975846) internal successors, (211), 207 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:55:35,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 211 transitions. [2023-12-19 17:55:35,277 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 211 transitions. Word has length 199 [2023-12-19 17:55:35,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:55:35,277 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 211 transitions. [2023-12-19 17:55:35,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 5.6923076923076925) internal successors, (222), 38 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:55:35,277 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 211 transitions. [2023-12-19 17:55:35,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2023-12-19 17:55:35,278 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:55:35,278 INFO L195 NwaCegarLoop]: trace histogram [34, 33, 33, 33, 33, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:55:35,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2023-12-19 17:55:35,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-12-19 17:55:35,480 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:55:35,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:55:35,481 INFO L85 PathProgramCache]: Analyzing trace with hash 46650669, now seen corresponding path program 38 times [2023-12-19 17:55:35,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:55:35,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805420067] [2023-12-19 17:55:35,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:55:35,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:55:35,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:55:37,356 INFO L134 CoverageAnalysis]: Checked inductivity of 3234 backedges. 2082 proven. 1152 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:55:37,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:55:37,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805420067] [2023-12-19 17:55:37,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805420067] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:55:37,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232147896] [2023-12-19 17:55:37,356 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-19 17:55:37,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:55:37,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:55:37,357 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 17:55:37,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-12-19 17:55:37,472 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-19 17:55:37,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:55:37,475 INFO L262 TraceCheckSpWp]: Trace formula consists of 761 conjuncts, 68 conjunts are in the unsatisfiable core [2023-12-19 17:55:37,478 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:55:38,856 INFO L134 CoverageAnalysis]: Checked inductivity of 3234 backedges. 2176 proven. 1056 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 17:55:38,856 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:55:40,117 INFO L134 CoverageAnalysis]: Checked inductivity of 3234 backedges. 2176 proven. 1056 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 17:55:40,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232147896] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:55:40,117 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:55:40,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 68, 68] total 104 [2023-12-19 17:55:40,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243202731] [2023-12-19 17:55:40,117 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:55:40,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2023-12-19 17:55:40,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:55:40,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2023-12-19 17:55:40,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2418, Invalid=8294, Unknown=0, NotChecked=0, Total=10712 [2023-12-19 17:55:40,119 INFO L87 Difference]: Start difference. First operand 208 states and 211 transitions. Second operand has 104 states, 104 states have (on average 3.3365384615384617) internal successors, (347), 104 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:55:41,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:55:41,081 INFO L93 Difference]: Finished difference Result 479 states and 549 transitions. [2023-12-19 17:55:41,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2023-12-19 17:55:41,082 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 3.3365384615384617) internal successors, (347), 104 states have internal predecessors, (347), 0 states have call successors, (0), 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 207 [2023-12-19 17:55:41,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:55:41,083 INFO L225 Difference]: With dead ends: 479 [2023-12-19 17:55:41,083 INFO L226 Difference]: Without dead ends: 342 [2023-12-19 17:55:41,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 315 SyntacticMatches, 64 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6971 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=4664, Invalid=13968, Unknown=0, NotChecked=0, Total=18632 [2023-12-19 17:55:41,084 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 404 mSDsluCounter, 743 mSDsCounter, 0 mSdLazyCounter, 917 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 1027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 17:55:41,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [404 Valid, 812 Invalid, 1027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 917 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 17:55:41,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2023-12-19 17:55:41,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 210. [2023-12-19 17:55:41,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 209 states have (on average 1.0191387559808613) internal successors, (213), 209 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:55:41,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 213 transitions. [2023-12-19 17:55:41,093 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 213 transitions. Word has length 207 [2023-12-19 17:55:41,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:55:41,093 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 213 transitions. [2023-12-19 17:55:41,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 104 states have (on average 3.3365384615384617) internal successors, (347), 104 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:55:41,093 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 213 transitions. [2023-12-19 17:55:41,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2023-12-19 17:55:41,094 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:55:41,094 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:55:41,099 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2023-12-19 17:55:41,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2023-12-19 17:55:41,299 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:55:41,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:55:41,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1775862610, now seen corresponding path program 39 times [2023-12-19 17:55:41,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:55:41,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977760043] [2023-12-19 17:55:41,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:55:41,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:55:41,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:55:42,674 INFO L134 CoverageAnalysis]: Checked inductivity of 3300 backedges. 2082 proven. 1218 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:55:42,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:55:42,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977760043] [2023-12-19 17:55:42,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977760043] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:55:42,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098211427] [2023-12-19 17:55:42,675 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-19 17:55:42,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:55:42,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:55:42,676 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 17:55:42,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-12-19 17:55:42,820 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2023-12-19 17:55:42,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:55:42,824 INFO L262 TraceCheckSpWp]: Trace formula consists of 771 conjuncts, 70 conjunts are in the unsatisfiable core [2023-12-19 17:55:42,826 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:55:43,934 INFO L134 CoverageAnalysis]: Checked inductivity of 3300 backedges. 2178 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:55:43,934 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:55:44,788 INFO L134 CoverageAnalysis]: Checked inductivity of 3300 backedges. 2178 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:55:44,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2098211427] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:55:44,788 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:55:44,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70, 70] total 106 [2023-12-19 17:55:44,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850242168] [2023-12-19 17:55:44,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:55:44,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 106 states [2023-12-19 17:55:44,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:55:44,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2023-12-19 17:55:44,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2523, Invalid=8607, Unknown=0, NotChecked=0, Total=11130 [2023-12-19 17:55:44,790 INFO L87 Difference]: Start difference. First operand 210 states and 213 transitions. Second operand has 106 states, 106 states have (on average 3.292452830188679) internal successors, (349), 106 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:55:45,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:55:45,595 INFO L93 Difference]: Finished difference Result 487 states and 559 transitions. [2023-12-19 17:55:45,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2023-12-19 17:55:45,595 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 106 states have (on average 3.292452830188679) internal successors, (349), 106 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 209 [2023-12-19 17:55:45,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:55:45,596 INFO L225 Difference]: With dead ends: 487 [2023-12-19 17:55:45,596 INFO L226 Difference]: Without dead ends: 348 [2023-12-19 17:55:45,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 316 SyntacticMatches, 66 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7252 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=4905, Invalid=14555, Unknown=0, NotChecked=0, Total=19460 [2023-12-19 17:55:45,598 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 538 mSDsluCounter, 828 mSDsCounter, 0 mSdLazyCounter, 996 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 538 SdHoareTripleChecker+Valid, 899 SdHoareTripleChecker+Invalid, 1139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 17:55:45,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [538 Valid, 899 Invalid, 1139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 996 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 17:55:45,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2023-12-19 17:55:45,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 212. [2023-12-19 17:55:45,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 211 states have (on average 1.018957345971564) internal successors, (215), 211 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:55:45,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 215 transitions. [2023-12-19 17:55:45,607 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 215 transitions. Word has length 209 [2023-12-19 17:55:45,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:55:45,607 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 215 transitions. [2023-12-19 17:55:45,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 106 states, 106 states have (on average 3.292452830188679) internal successors, (349), 106 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:55:45,608 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 215 transitions. [2023-12-19 17:55:45,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-12-19 17:55:45,608 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:55:45,608 INFO L195 NwaCegarLoop]: trace histogram [35, 34, 34, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:55:45,614 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2023-12-19 17:55:45,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2023-12-19 17:55:45,814 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:55:45,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:55:45,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1396194359, now seen corresponding path program 40 times [2023-12-19 17:55:45,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:55:45,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755062886] [2023-12-19 17:55:45,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:55:45,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:55:45,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:55:46,755 INFO L134 CoverageAnalysis]: Checked inductivity of 3368 backedges. 1122 proven. 2246 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:55:46,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:55:46,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755062886] [2023-12-19 17:55:46,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755062886] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:55:46,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672861172] [2023-12-19 17:55:46,756 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-19 17:55:46,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:55:46,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:55:46,757 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 17:55:46,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-12-19 17:55:46,872 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-19 17:55:46,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:55:46,875 INFO L262 TraceCheckSpWp]: Trace formula consists of 781 conjuncts, 74 conjunts are in the unsatisfiable core [2023-12-19 17:55:46,878 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:55:47,001 INFO L134 CoverageAnalysis]: Checked inductivity of 3368 backedges. 1190 proven. 2178 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:55:47,002 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:55:47,547 INFO L134 CoverageAnalysis]: Checked inductivity of 3368 backedges. 1190 proven. 2178 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:55:47,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672861172] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:55:47,547 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:55:47,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 40 [2023-12-19 17:55:47,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290599599] [2023-12-19 17:55:47,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:55:47,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-12-19 17:55:47,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:55:47,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-12-19 17:55:47,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=712, Invalid=928, Unknown=0, NotChecked=0, Total=1640 [2023-12-19 17:55:47,548 INFO L87 Difference]: Start difference. First operand 212 states and 215 transitions. Second operand has 41 states, 41 states have (on average 5.7073170731707314) internal successors, (234), 40 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:55:47,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:55:47,869 INFO L93 Difference]: Finished difference Result 229 states and 233 transitions. [2023-12-19 17:55:47,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2023-12-19 17:55:47,873 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 5.7073170731707314) internal successors, (234), 40 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 211 [2023-12-19 17:55:47,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:55:47,874 INFO L225 Difference]: With dead ends: 229 [2023-12-19 17:55:47,874 INFO L226 Difference]: Without dead ends: 227 [2023-12-19 17:55:47,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 526 GetRequests, 384 SyntacticMatches, 67 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2809 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=2151, Invalid=3701, Unknown=0, NotChecked=0, Total=5852 [2023-12-19 17:55:47,875 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 48 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 17:55:47,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 365 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 17:55:47,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2023-12-19 17:55:47,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 220. [2023-12-19 17:55:47,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 219 states have (on average 1.0182648401826484) internal successors, (223), 219 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:55:47,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 223 transitions. [2023-12-19 17:55:47,884 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 223 transitions. Word has length 211 [2023-12-19 17:55:47,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:55:47,884 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 223 transitions. [2023-12-19 17:55:47,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 5.7073170731707314) internal successors, (234), 40 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:55:47,884 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 223 transitions. [2023-12-19 17:55:47,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2023-12-19 17:55:47,885 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:55:47,885 INFO L195 NwaCegarLoop]: trace histogram [36, 35, 35, 35, 35, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:55:47,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2023-12-19 17:55:48,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2023-12-19 17:55:48,090 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:55:48,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:55:48,091 INFO L85 PathProgramCache]: Analyzing trace with hash 700213021, now seen corresponding path program 41 times [2023-12-19 17:55:48,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:55:48,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386748073] [2023-12-19 17:55:48,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:55:48,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:55:48,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:55:49,894 INFO L134 CoverageAnalysis]: Checked inductivity of 3640 backedges. 2348 proven. 1292 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:55:49,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:55:49,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386748073] [2023-12-19 17:55:49,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386748073] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:55:49,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30675313] [2023-12-19 17:55:49,894 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-19 17:55:49,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:55:49,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:55:49,895 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 17:55:49,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2023-12-19 17:55:50,049 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2023-12-19 17:55:50,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:55:50,053 INFO L262 TraceCheckSpWp]: Trace formula consists of 805 conjuncts, 73 conjunts are in the unsatisfiable core [2023-12-19 17:55:50,055 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:55:51,534 INFO L134 CoverageAnalysis]: Checked inductivity of 3640 backedges. 2450 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:55:51,534 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:55:52,562 INFO L134 CoverageAnalysis]: Checked inductivity of 3640 backedges. 2450 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:55:52,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30675313] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:55:52,562 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:55:52,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73, 73] total 113 [2023-12-19 17:55:52,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869409154] [2023-12-19 17:55:52,563 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:55:52,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 113 states [2023-12-19 17:55:52,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:55:52,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2023-12-19 17:55:52,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2890, Invalid=9766, Unknown=0, NotChecked=0, Total=12656 [2023-12-19 17:55:52,565 INFO L87 Difference]: Start difference. First operand 220 states and 223 transitions. Second operand has 113 states, 113 states have (on average 3.327433628318584) internal successors, (376), 113 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:55:54,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:55:54,076 INFO L93 Difference]: Finished difference Result 654 states and 731 transitions. [2023-12-19 17:55:54,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2023-12-19 17:55:54,076 INFO L78 Accepts]: Start accepts. Automaton has has 113 states, 113 states have (on average 3.327433628318584) internal successors, (376), 113 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 219 [2023-12-19 17:55:54,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:55:54,078 INFO L225 Difference]: With dead ends: 654 [2023-12-19 17:55:54,079 INFO L226 Difference]: Without dead ends: 368 [2023-12-19 17:55:54,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 580 GetRequests, 331 SyntacticMatches, 67 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11250 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=8181, Invalid=25491, Unknown=0, NotChecked=0, Total=33672 [2023-12-19 17:55:54,081 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 662 mSDsluCounter, 951 mSDsCounter, 0 mSdLazyCounter, 1133 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 662 SdHoareTripleChecker+Valid, 1024 SdHoareTripleChecker+Invalid, 1316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 1133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 17:55:54,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [662 Valid, 1024 Invalid, 1316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 1133 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 17:55:54,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2023-12-19 17:55:54,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 224. [2023-12-19 17:55:54,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 223 states have (on average 1.0179372197309418) internal successors, (227), 223 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:55:54,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 227 transitions. [2023-12-19 17:55:54,096 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 227 transitions. Word has length 219 [2023-12-19 17:55:54,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:55:54,096 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 227 transitions. [2023-12-19 17:55:54,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 113 states, 113 states have (on average 3.327433628318584) internal successors, (376), 113 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:55:54,097 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 227 transitions. [2023-12-19 17:55:54,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2023-12-19 17:55:54,097 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:55:54,097 INFO L195 NwaCegarLoop]: trace histogram [37, 36, 36, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:55:54,105 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2023-12-19 17:55:54,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:55:54,303 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:55:54,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:55:54,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1525190439, now seen corresponding path program 42 times [2023-12-19 17:55:54,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:55:54,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932396378] [2023-12-19 17:55:54,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:55:54,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:55:54,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:55:55,582 INFO L134 CoverageAnalysis]: Checked inductivity of 3782 backedges. 1260 proven. 2522 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:55:55,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:55:55,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932396378] [2023-12-19 17:55:55,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932396378] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:55:55,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397956208] [2023-12-19 17:55:55,582 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-19 17:55:55,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:55:55,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:55:55,583 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 17:55:55,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2023-12-19 17:55:55,740 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2023-12-19 17:55:55,740 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:55:55,744 INFO L262 TraceCheckSpWp]: Trace formula consists of 825 conjuncts, 78 conjunts are in the unsatisfiable core [2023-12-19 17:55:55,747 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:55:55,966 INFO L134 CoverageAnalysis]: Checked inductivity of 3782 backedges. 1332 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:55:55,967 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:55:56,993 INFO L134 CoverageAnalysis]: Checked inductivity of 3782 backedges. 1332 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:55:56,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [397956208] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:55:56,993 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:55:56,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 42 [2023-12-19 17:55:56,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938874178] [2023-12-19 17:55:56,993 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:55:56,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-12-19 17:55:56,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:55:56,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-12-19 17:55:56,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=789, Invalid=1017, Unknown=0, NotChecked=0, Total=1806 [2023-12-19 17:55:56,995 INFO L87 Difference]: Start difference. First operand 224 states and 227 transitions. Second operand has 43 states, 43 states have (on average 5.72093023255814) internal successors, (246), 42 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:55:57,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:55:57,390 INFO L93 Difference]: Finished difference Result 241 states and 245 transitions. [2023-12-19 17:55:57,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2023-12-19 17:55:57,390 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 5.72093023255814) internal successors, (246), 42 states have internal predecessors, (246), 0 states have call successors, (0), 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 223 [2023-12-19 17:55:57,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:55:57,391 INFO L225 Difference]: With dead ends: 241 [2023-12-19 17:55:57,391 INFO L226 Difference]: Without dead ends: 239 [2023-12-19 17:55:57,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 556 GetRequests, 406 SyntacticMatches, 71 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3119 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2384, Invalid=4096, Unknown=0, NotChecked=0, Total=6480 [2023-12-19 17:55:57,391 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 85 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 17:55:57,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 318 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 17:55:57,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2023-12-19 17:55:57,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 232. [2023-12-19 17:55:57,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 231 states have (on average 1.0173160173160174) internal successors, (235), 231 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:55:57,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 235 transitions. [2023-12-19 17:55:57,405 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 235 transitions. Word has length 223 [2023-12-19 17:55:57,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:55:57,406 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 235 transitions. [2023-12-19 17:55:57,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 5.72093023255814) internal successors, (246), 42 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:55:57,406 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 235 transitions. [2023-12-19 17:55:57,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2023-12-19 17:55:57,407 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:55:57,407 INFO L195 NwaCegarLoop]: trace histogram [38, 37, 37, 37, 37, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:55:57,414 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2023-12-19 17:55:57,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:55:57,612 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:55:57,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:55:57,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1830996493, now seen corresponding path program 43 times [2023-12-19 17:55:57,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:55:57,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76771650] [2023-12-19 17:55:57,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:55:57,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:55:57,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:55:59,325 INFO L134 CoverageAnalysis]: Checked inductivity of 4070 backedges. 2630 proven. 1440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:55:59,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:55:59,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76771650] [2023-12-19 17:55:59,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76771650] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:55:59,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379041461] [2023-12-19 17:55:59,325 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-19 17:55:59,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:55:59,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:55:59,326 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 17:55:59,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2023-12-19 17:55:59,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:55:59,446 INFO L262 TraceCheckSpWp]: Trace formula consists of 849 conjuncts, 76 conjunts are in the unsatisfiable core [2023-12-19 17:55:59,448 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:56:01,366 INFO L134 CoverageAnalysis]: Checked inductivity of 4070 backedges. 2736 proven. 1332 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 17:56:01,366 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:56:02,584 INFO L134 CoverageAnalysis]: Checked inductivity of 4070 backedges. 2736 proven. 1332 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 17:56:02,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379041461] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:56:02,585 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:56:02,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 76, 76] total 116 [2023-12-19 17:56:02,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138231492] [2023-12-19 17:56:02,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:56:02,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 116 states [2023-12-19 17:56:02,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:56:02,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2023-12-19 17:56:02,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3006, Invalid=10334, Unknown=0, NotChecked=0, Total=13340 [2023-12-19 17:56:02,587 INFO L87 Difference]: Start difference. First operand 232 states and 235 transitions. Second operand has 116 states, 116 states have (on average 3.336206896551724) internal successors, (387), 116 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:56:03,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:56:03,771 INFO L93 Difference]: Finished difference Result 535 states and 613 transitions. [2023-12-19 17:56:03,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2023-12-19 17:56:03,772 INFO L78 Accepts]: Start accepts. Automaton has has 116 states, 116 states have (on average 3.336206896551724) internal successors, (387), 116 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 231 [2023-12-19 17:56:03,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:56:03,773 INFO L225 Difference]: With dead ends: 535 [2023-12-19 17:56:03,773 INFO L226 Difference]: Without dead ends: 382 [2023-12-19 17:56:03,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 574 GetRequests, 351 SyntacticMatches, 72 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8707 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=5820, Invalid=17436, Unknown=0, NotChecked=0, Total=23256 [2023-12-19 17:56:03,774 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 559 mSDsluCounter, 763 mSDsCounter, 0 mSdLazyCounter, 949 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 559 SdHoareTripleChecker+Valid, 840 SdHoareTripleChecker+Invalid, 1098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 17:56:03,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [559 Valid, 840 Invalid, 1098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 949 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 17:56:03,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2023-12-19 17:56:03,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 234. [2023-12-19 17:56:03,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 233 states have (on average 1.0171673819742488) internal successors, (237), 233 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:56:03,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 237 transitions. [2023-12-19 17:56:03,784 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 237 transitions. Word has length 231 [2023-12-19 17:56:03,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:56:03,785 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 237 transitions. [2023-12-19 17:56:03,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 116 states, 116 states have (on average 3.336206896551724) internal successors, (387), 116 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:56:03,785 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 237 transitions. [2023-12-19 17:56:03,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2023-12-19 17:56:03,785 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:56:03,785 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:56:03,808 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2023-12-19 17:56:03,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2023-12-19 17:56:03,991 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:56:03,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:56:03,992 INFO L85 PathProgramCache]: Analyzing trace with hash -528115406, now seen corresponding path program 44 times [2023-12-19 17:56:03,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:56:03,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56561678] [2023-12-19 17:56:03,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:56:03,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:56:04,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:56:06,073 INFO L134 CoverageAnalysis]: Checked inductivity of 4144 backedges. 2630 proven. 1514 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:56:06,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:56:06,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56561678] [2023-12-19 17:56:06,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56561678] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:56:06,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57610818] [2023-12-19 17:56:06,074 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-19 17:56:06,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:56:06,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:56:06,075 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 17:56:06,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2023-12-19 17:56:06,195 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-19 17:56:06,195 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:56:06,199 INFO L262 TraceCheckSpWp]: Trace formula consists of 859 conjuncts, 78 conjunts are in the unsatisfiable core [2023-12-19 17:56:06,201 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:56:07,863 INFO L134 CoverageAnalysis]: Checked inductivity of 4144 backedges. 2738 proven. 1406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:56:07,863 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:56:09,028 INFO L134 CoverageAnalysis]: Checked inductivity of 4144 backedges. 2738 proven. 1406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:56:09,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57610818] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:56:09,028 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:56:09,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78, 78] total 118 [2023-12-19 17:56:09,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258143790] [2023-12-19 17:56:09,029 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:56:09,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 118 states [2023-12-19 17:56:09,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:56:09,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2023-12-19 17:56:09,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3123, Invalid=10683, Unknown=0, NotChecked=0, Total=13806 [2023-12-19 17:56:09,031 INFO L87 Difference]: Start difference. First operand 234 states and 237 transitions. Second operand has 118 states, 118 states have (on average 3.2966101694915255) internal successors, (389), 118 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:56:10,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:56:10,057 INFO L93 Difference]: Finished difference Result 543 states and 623 transitions. [2023-12-19 17:56:10,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2023-12-19 17:56:10,057 INFO L78 Accepts]: Start accepts. Automaton has has 118 states, 118 states have (on average 3.2966101694915255) internal successors, (389), 118 states have internal predecessors, (389), 0 states have call successors, (0), 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 233 [2023-12-19 17:56:10,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:56:10,059 INFO L225 Difference]: With dead ends: 543 [2023-12-19 17:56:10,059 INFO L226 Difference]: Without dead ends: 388 [2023-12-19 17:56:10,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 580 GetRequests, 352 SyntacticMatches, 74 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9020 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=6089, Invalid=18091, Unknown=0, NotChecked=0, Total=24180 [2023-12-19 17:56:10,061 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 715 mSDsluCounter, 776 mSDsCounter, 0 mSdLazyCounter, 987 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 715 SdHoareTripleChecker+Valid, 855 SdHoareTripleChecker+Invalid, 1176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 987 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 17:56:10,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [715 Valid, 855 Invalid, 1176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 987 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 17:56:10,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2023-12-19 17:56:10,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 236. [2023-12-19 17:56:10,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 235 states have (on average 1.0170212765957447) internal successors, (239), 235 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:56:10,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 239 transitions. [2023-12-19 17:56:10,072 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 239 transitions. Word has length 233 [2023-12-19 17:56:10,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:56:10,072 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 239 transitions. [2023-12-19 17:56:10,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 118 states, 118 states have (on average 3.2966101694915255) internal successors, (389), 118 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:56:10,072 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 239 transitions. [2023-12-19 17:56:10,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2023-12-19 17:56:10,073 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:56:10,073 INFO L195 NwaCegarLoop]: trace histogram [39, 38, 38, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:56:10,081 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2023-12-19 17:56:10,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2023-12-19 17:56:10,279 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:56:10,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:56:10,279 INFO L85 PathProgramCache]: Analyzing trace with hash 108081943, now seen corresponding path program 45 times [2023-12-19 17:56:10,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:56:10,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733555172] [2023-12-19 17:56:10,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:56:10,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:56:10,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:56:11,479 INFO L134 CoverageAnalysis]: Checked inductivity of 4220 backedges. 1406 proven. 2814 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:56:11,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:56:11,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733555172] [2023-12-19 17:56:11,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733555172] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:56:11,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306783472] [2023-12-19 17:56:11,479 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-19 17:56:11,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:56:11,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:56:11,480 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 17:56:11,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2023-12-19 17:56:11,650 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 39 check-sat command(s) [2023-12-19 17:56:11,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:56:11,654 INFO L262 TraceCheckSpWp]: Trace formula consists of 869 conjuncts, 82 conjunts are in the unsatisfiable core [2023-12-19 17:56:11,657 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:56:11,842 INFO L134 CoverageAnalysis]: Checked inductivity of 4220 backedges. 1482 proven. 2738 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:56:11,843 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:56:12,534 INFO L134 CoverageAnalysis]: Checked inductivity of 4220 backedges. 1482 proven. 2738 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:56:12,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306783472] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:56:12,534 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:56:12,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 44 [2023-12-19 17:56:12,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939996856] [2023-12-19 17:56:12,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:56:12,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-12-19 17:56:12,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:56:12,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-12-19 17:56:12,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=870, Invalid=1110, Unknown=0, NotChecked=0, Total=1980 [2023-12-19 17:56:12,535 INFO L87 Difference]: Start difference. First operand 236 states and 239 transitions. Second operand has 45 states, 45 states have (on average 5.733333333333333) internal successors, (258), 44 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:56:12,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:56:12,909 INFO L93 Difference]: Finished difference Result 253 states and 257 transitions. [2023-12-19 17:56:12,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2023-12-19 17:56:12,909 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 5.733333333333333) internal successors, (258), 44 states have internal predecessors, (258), 0 states have call successors, (0), 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 [2023-12-19 17:56:12,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:56:12,910 INFO L225 Difference]: With dead ends: 253 [2023-12-19 17:56:12,910 INFO L226 Difference]: Without dead ends: 251 [2023-12-19 17:56:12,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 586 GetRequests, 428 SyntacticMatches, 75 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3445 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2629, Invalid=4511, Unknown=0, NotChecked=0, Total=7140 [2023-12-19 17:56:12,912 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 52 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 17:56:12,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 415 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 17:56:12,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2023-12-19 17:56:12,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 244. [2023-12-19 17:56:12,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 243 states have (on average 1.0164609053497942) internal successors, (247), 243 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:56:12,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 247 transitions. [2023-12-19 17:56:12,934 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 247 transitions. Word has length 235 [2023-12-19 17:56:12,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:56:12,934 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 247 transitions. [2023-12-19 17:56:12,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 5.733333333333333) internal successors, (258), 44 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:56:12,934 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 247 transitions. [2023-12-19 17:56:12,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2023-12-19 17:56:12,935 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:56:12,935 INFO L195 NwaCegarLoop]: trace histogram [40, 39, 39, 39, 39, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:56:12,954 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2023-12-19 17:56:13,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2023-12-19 17:56:13,144 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:56:13,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:56:13,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1551860227, now seen corresponding path program 46 times [2023-12-19 17:56:13,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:56:13,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037800705] [2023-12-19 17:56:13,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:56:13,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:56:13,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:56:15,071 INFO L134 CoverageAnalysis]: Checked inductivity of 4524 backedges. 2928 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:56:15,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:56:15,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037800705] [2023-12-19 17:56:15,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037800705] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:56:15,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509728935] [2023-12-19 17:56:15,071 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-19 17:56:15,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:56:15,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:56:15,072 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 17:56:15,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2023-12-19 17:56:15,198 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-19 17:56:15,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:56:15,202 INFO L262 TraceCheckSpWp]: Trace formula consists of 893 conjuncts, 81 conjunts are in the unsatisfiable core [2023-12-19 17:56:15,204 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:56:16,903 INFO L134 CoverageAnalysis]: Checked inductivity of 4524 backedges. 3042 proven. 1482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:56:16,904 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:56:18,784 INFO L134 CoverageAnalysis]: Checked inductivity of 4524 backedges. 3042 proven. 1482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:56:18,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509728935] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:56:18,784 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:56:18,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81, 81] total 125 [2023-12-19 17:56:18,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735485028] [2023-12-19 17:56:18,784 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:56:18,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 125 states [2023-12-19 17:56:18,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:56:18,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2023-12-19 17:56:18,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3530, Invalid=11970, Unknown=0, NotChecked=0, Total=15500 [2023-12-19 17:56:18,787 INFO L87 Difference]: Start difference. First operand 244 states and 247 transitions. Second operand has 125 states, 125 states have (on average 3.328) internal successors, (416), 125 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:56:20,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:56:20,989 INFO L93 Difference]: Finished difference Result 726 states and 811 transitions. [2023-12-19 17:56:20,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2023-12-19 17:56:20,989 INFO L78 Accepts]: Start accepts. Automaton has has 125 states, 125 states have (on average 3.328) internal successors, (416), 125 states have internal predecessors, (416), 0 states have call successors, (0), 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 243 [2023-12-19 17:56:20,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:56:20,990 INFO L225 Difference]: With dead ends: 726 [2023-12-19 17:56:20,990 INFO L226 Difference]: Without dead ends: 408 [2023-12-19 17:56:20,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 644 GetRequests, 367 SyntacticMatches, 75 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13864 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=10049, Invalid=31363, Unknown=0, NotChecked=0, Total=41412 [2023-12-19 17:56:20,994 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 799 mSDsluCounter, 1163 mSDsCounter, 0 mSdLazyCounter, 1381 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 799 SdHoareTripleChecker+Valid, 1244 SdHoareTripleChecker+Invalid, 1601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 1381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 17:56:20,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [799 Valid, 1244 Invalid, 1601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 1381 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 17:56:20,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2023-12-19 17:56:21,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 248. [2023-12-19 17:56:21,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 247 states have (on average 1.0161943319838056) internal successors, (251), 247 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:56:21,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 251 transitions. [2023-12-19 17:56:21,005 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 251 transitions. Word has length 243 [2023-12-19 17:56:21,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:56:21,005 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 251 transitions. [2023-12-19 17:56:21,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 125 states, 125 states have (on average 3.328) internal successors, (416), 125 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:56:21,005 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 251 transitions. [2023-12-19 17:56:21,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2023-12-19 17:56:21,006 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:56:21,006 INFO L195 NwaCegarLoop]: trace histogram [41, 40, 40, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:56:21,026 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2023-12-19 17:56:21,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:56:21,212 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:56:21,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:56:21,212 INFO L85 PathProgramCache]: Analyzing trace with hash -963139577, now seen corresponding path program 47 times [2023-12-19 17:56:21,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:56:21,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5695413] [2023-12-19 17:56:21,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:56:21,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:56:21,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:56:22,559 INFO L134 CoverageAnalysis]: Checked inductivity of 4682 backedges. 1560 proven. 3122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:56:22,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:56:22,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5695413] [2023-12-19 17:56:22,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5695413] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:56:22,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064570655] [2023-12-19 17:56:22,560 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-19 17:56:22,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:56:22,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:56:22,561 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 17:56:22,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2023-12-19 17:56:22,738 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 41 check-sat command(s) [2023-12-19 17:56:22,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:56:22,743 INFO L262 TraceCheckSpWp]: Trace formula consists of 913 conjuncts, 86 conjunts are in the unsatisfiable core [2023-12-19 17:56:22,745 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:56:22,911 INFO L134 CoverageAnalysis]: Checked inductivity of 4682 backedges. 1640 proven. 3042 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:56:22,912 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:56:23,668 INFO L134 CoverageAnalysis]: Checked inductivity of 4682 backedges. 1640 proven. 3042 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:56:23,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064570655] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:56:23,669 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:56:23,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 46 [2023-12-19 17:56:23,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15951459] [2023-12-19 17:56:23,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:56:23,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-12-19 17:56:23,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:56:23,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-12-19 17:56:23,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=955, Invalid=1207, Unknown=0, NotChecked=0, Total=2162 [2023-12-19 17:56:23,670 INFO L87 Difference]: Start difference. First operand 248 states and 251 transitions. Second operand has 47 states, 47 states have (on average 5.74468085106383) internal successors, (270), 46 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:56:24,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:56:24,076 INFO L93 Difference]: Finished difference Result 265 states and 269 transitions. [2023-12-19 17:56:24,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2023-12-19 17:56:24,077 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 5.74468085106383) internal successors, (270), 46 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 247 [2023-12-19 17:56:24,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:56:24,077 INFO L225 Difference]: With dead ends: 265 [2023-12-19 17:56:24,077 INFO L226 Difference]: Without dead ends: 263 [2023-12-19 17:56:24,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 616 GetRequests, 450 SyntacticMatches, 79 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3787 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2886, Invalid=4946, Unknown=0, NotChecked=0, Total=7832 [2023-12-19 17:56:24,078 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 52 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 17:56:24,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 400 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 17:56:24,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2023-12-19 17:56:24,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 256. [2023-12-19 17:56:24,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 255 states have (on average 1.0156862745098039) internal successors, (259), 255 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:56:24,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 259 transitions. [2023-12-19 17:56:24,089 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 259 transitions. Word has length 247 [2023-12-19 17:56:24,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:56:24,090 INFO L495 AbstractCegarLoop]: Abstraction has 256 states and 259 transitions. [2023-12-19 17:56:24,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 5.74468085106383) internal successors, (270), 46 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:56:24,090 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 259 transitions. [2023-12-19 17:56:24,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2023-12-19 17:56:24,091 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:56:24,091 INFO L195 NwaCegarLoop]: trace histogram [42, 41, 41, 41, 41, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:56:24,100 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2023-12-19 17:56:24,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2023-12-19 17:56:24,298 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:56:24,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:56:24,298 INFO L85 PathProgramCache]: Analyzing trace with hash -535100691, now seen corresponding path program 48 times [2023-12-19 17:56:24,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:56:24,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012202404] [2023-12-19 17:56:24,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:56:24,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:56:24,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:56:26,504 INFO L134 CoverageAnalysis]: Checked inductivity of 5002 backedges. 3242 proven. 1760 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:56:26,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:56:26,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012202404] [2023-12-19 17:56:26,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012202404] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:56:26,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599661798] [2023-12-19 17:56:26,505 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-19 17:56:26,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:56:26,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:56:26,506 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 17:56:26,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2023-12-19 17:56:26,684 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 42 check-sat command(s) [2023-12-19 17:56:26,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:56:26,688 INFO L262 TraceCheckSpWp]: Trace formula consists of 937 conjuncts, 85 conjunts are in the unsatisfiable core [2023-12-19 17:56:26,691 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:56:28,635 INFO L134 CoverageAnalysis]: Checked inductivity of 5002 backedges. 3362 proven. 1640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:56:28,635 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:56:30,568 INFO L134 CoverageAnalysis]: Checked inductivity of 5002 backedges. 3362 proven. 1640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:56:30,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1599661798] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:56:30,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:56:30,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85, 85] total 131 [2023-12-19 17:56:30,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240266711] [2023-12-19 17:56:30,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:56:30,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 131 states [2023-12-19 17:56:30,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:56:30,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2023-12-19 17:56:30,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3874, Invalid=13156, Unknown=0, NotChecked=0, Total=17030 [2023-12-19 17:56:30,571 INFO L87 Difference]: Start difference. First operand 256 states and 259 transitions. Second operand has 131 states, 131 states have (on average 3.3282442748091605) internal successors, (436), 131 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:56:32,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:56:32,907 INFO L93 Difference]: Finished difference Result 762 states and 851 transitions. [2023-12-19 17:56:32,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2023-12-19 17:56:32,907 INFO L78 Accepts]: Start accepts. Automaton has has 131 states, 131 states have (on average 3.3282442748091605) internal successors, (436), 131 states have internal predecessors, (436), 0 states have call successors, (0), 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 255 [2023-12-19 17:56:32,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:56:32,908 INFO L225 Difference]: With dead ends: 762 [2023-12-19 17:56:32,908 INFO L226 Difference]: Without dead ends: 428 [2023-12-19 17:56:32,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 676 GetRequests, 385 SyntacticMatches, 79 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15273 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=11055, Invalid=34527, Unknown=0, NotChecked=0, Total=45582 [2023-12-19 17:56:32,911 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 1040 mSDsluCounter, 1509 mSDsCounter, 0 mSdLazyCounter, 1749 mSolverCounterSat, 281 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1040 SdHoareTripleChecker+Valid, 1594 SdHoareTripleChecker+Invalid, 2030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 281 IncrementalHoareTripleChecker+Valid, 1749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 17:56:32,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1040 Valid, 1594 Invalid, 2030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [281 Valid, 1749 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 17:56:32,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2023-12-19 17:56:32,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 260. [2023-12-19 17:56:32,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 259 states have (on average 1.0154440154440154) internal successors, (263), 259 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:56:32,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 263 transitions. [2023-12-19 17:56:32,923 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 263 transitions. Word has length 255 [2023-12-19 17:56:32,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:56:32,924 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 263 transitions. [2023-12-19 17:56:32,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 131 states, 131 states have (on average 3.3282442748091605) internal successors, (436), 131 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:56:32,924 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 263 transitions. [2023-12-19 17:56:32,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2023-12-19 17:56:32,925 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:56:32,925 INFO L195 NwaCegarLoop]: trace histogram [43, 42, 42, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:56:32,934 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2023-12-19 17:56:33,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:56:33,131 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:56:33,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:56:33,132 INFO L85 PathProgramCache]: Analyzing trace with hash -387879433, now seen corresponding path program 49 times [2023-12-19 17:56:33,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:56:33,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214206139] [2023-12-19 17:56:33,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:56:33,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:56:33,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:56:34,695 INFO L134 CoverageAnalysis]: Checked inductivity of 5168 backedges. 1722 proven. 3446 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:56:34,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:56:34,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214206139] [2023-12-19 17:56:34,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214206139] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:56:34,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575779089] [2023-12-19 17:56:34,695 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-19 17:56:34,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:56:34,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:56:34,697 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 17:56:34,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2023-12-19 17:56:34,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:56:34,840 INFO L262 TraceCheckSpWp]: Trace formula consists of 957 conjuncts, 90 conjunts are in the unsatisfiable core [2023-12-19 17:56:34,843 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:56:35,012 INFO L134 CoverageAnalysis]: Checked inductivity of 5168 backedges. 1806 proven. 3362 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:56:35,012 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:56:35,804 INFO L134 CoverageAnalysis]: Checked inductivity of 5168 backedges. 1806 proven. 3362 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:56:35,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1575779089] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:56:35,804 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:56:35,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45, 45] total 48 [2023-12-19 17:56:35,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419256383] [2023-12-19 17:56:35,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:56:35,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-12-19 17:56:35,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:56:35,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-12-19 17:56:35,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1044, Invalid=1308, Unknown=0, NotChecked=0, Total=2352 [2023-12-19 17:56:35,807 INFO L87 Difference]: Start difference. First operand 260 states and 263 transitions. Second operand has 49 states, 49 states have (on average 5.755102040816326) internal successors, (282), 48 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:56:36,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:56:36,355 INFO L93 Difference]: Finished difference Result 277 states and 281 transitions. [2023-12-19 17:56:36,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2023-12-19 17:56:36,356 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 5.755102040816326) internal successors, (282), 48 states have internal predecessors, (282), 0 states have call successors, (0), 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 259 [2023-12-19 17:56:36,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:56:36,357 INFO L225 Difference]: With dead ends: 277 [2023-12-19 17:56:36,357 INFO L226 Difference]: Without dead ends: 275 [2023-12-19 17:56:36,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 646 GetRequests, 472 SyntacticMatches, 83 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4145 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=3155, Invalid=5401, Unknown=0, NotChecked=0, Total=8556 [2023-12-19 17:56:36,357 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 54 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 17:56:36,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 434 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 463 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 17:56:36,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2023-12-19 17:56:36,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 268. [2023-12-19 17:56:36,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 267 states have (on average 1.0149812734082397) internal successors, (271), 267 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:56:36,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 271 transitions. [2023-12-19 17:56:36,369 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 271 transitions. Word has length 259 [2023-12-19 17:56:36,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:56:36,370 INFO L495 AbstractCegarLoop]: Abstraction has 268 states and 271 transitions. [2023-12-19 17:56:36,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 5.755102040816326) internal successors, (282), 48 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:56:36,370 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 271 transitions. [2023-12-19 17:56:36,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2023-12-19 17:56:36,370 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:56:36,370 INFO L195 NwaCegarLoop]: trace histogram [44, 43, 43, 43, 43, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:56:36,376 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2023-12-19 17:56:36,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2023-12-19 17:56:36,576 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:56:36,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:56:36,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1391974621, now seen corresponding path program 50 times [2023-12-19 17:56:36,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:56:36,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090547568] [2023-12-19 17:56:36,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:56:36,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:56:36,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:56:39,190 INFO L134 CoverageAnalysis]: Checked inductivity of 5504 backedges. 3572 proven. 1932 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:56:39,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:56:39,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090547568] [2023-12-19 17:56:39,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090547568] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:56:39,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738668820] [2023-12-19 17:56:39,191 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-19 17:56:39,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:56:39,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:56:39,192 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 17:56:39,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2023-12-19 17:56:39,342 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-19 17:56:39,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:56:39,346 INFO L262 TraceCheckSpWp]: Trace formula consists of 981 conjuncts, 88 conjunts are in the unsatisfiable core [2023-12-19 17:56:39,348 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:56:41,173 INFO L134 CoverageAnalysis]: Checked inductivity of 5504 backedges. 3696 proven. 1806 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 17:56:41,173 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:56:42,620 INFO L134 CoverageAnalysis]: Checked inductivity of 5504 backedges. 3696 proven. 1806 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 17:56:42,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738668820] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:56:42,620 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:56:42,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 88, 88] total 134 [2023-12-19 17:56:42,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924064959] [2023-12-19 17:56:42,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:56:42,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 134 states [2023-12-19 17:56:42,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:56:42,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2023-12-19 17:56:42,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4008, Invalid=13814, Unknown=0, NotChecked=0, Total=17822 [2023-12-19 17:56:42,623 INFO L87 Difference]: Start difference. First operand 268 states and 271 transitions. Second operand has 134 states, 134 states have (on average 3.3358208955223883) internal successors, (447), 134 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:56:44,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:56:44,134 INFO L93 Difference]: Finished difference Result 619 states and 709 transitions. [2023-12-19 17:56:44,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2023-12-19 17:56:44,135 INFO L78 Accepts]: Start accepts. Automaton has has 134 states, 134 states have (on average 3.3358208955223883) internal successors, (447), 134 states have internal predecessors, (447), 0 states have call successors, (0), 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 267 [2023-12-19 17:56:44,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:56:44,136 INFO L225 Difference]: With dead ends: 619 [2023-12-19 17:56:44,136 INFO L226 Difference]: Without dead ends: 442 [2023-12-19 17:56:44,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 664 GetRequests, 405 SyntacticMatches, 84 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11671 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=7794, Invalid=23358, Unknown=0, NotChecked=0, Total=31152 [2023-12-19 17:56:44,151 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 770 mSDsluCounter, 1048 mSDsCounter, 0 mSdLazyCounter, 1279 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 770 SdHoareTripleChecker+Valid, 1137 SdHoareTripleChecker+Invalid, 1482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 1279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 17:56:44,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [770 Valid, 1137 Invalid, 1482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 1279 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 17:56:44,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2023-12-19 17:56:44,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 270. [2023-12-19 17:56:44,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 269 states have (on average 1.0148698884758365) internal successors, (273), 269 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:56:44,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 273 transitions. [2023-12-19 17:56:44,177 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 273 transitions. Word has length 267 [2023-12-19 17:56:44,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:56:44,177 INFO L495 AbstractCegarLoop]: Abstraction has 270 states and 273 transitions. [2023-12-19 17:56:44,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 134 states, 134 states have (on average 3.3358208955223883) internal successors, (447), 134 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:56:44,177 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 273 transitions. [2023-12-19 17:56:44,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2023-12-19 17:56:44,178 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:56:44,178 INFO L195 NwaCegarLoop]: trace histogram [44, 44, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:56:44,192 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2023-12-19 17:56:44,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2023-12-19 17:56:44,392 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:56:44,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:56:44,392 INFO L85 PathProgramCache]: Analyzing trace with hash -928990846, now seen corresponding path program 51 times [2023-12-19 17:56:44,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:56:44,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296468877] [2023-12-19 17:56:44,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:56:44,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:56:44,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:56:47,416 INFO L134 CoverageAnalysis]: Checked inductivity of 5590 backedges. 3572 proven. 2018 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:56:47,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:56:47,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296468877] [2023-12-19 17:56:47,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296468877] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:56:47,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643924449] [2023-12-19 17:56:47,416 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-19 17:56:47,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:56:47,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:56:47,417 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 17:56:47,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2023-12-19 17:56:47,673 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 44 check-sat command(s) [2023-12-19 17:56:47,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:56:47,677 INFO L262 TraceCheckSpWp]: Trace formula consists of 991 conjuncts, 90 conjunts are in the unsatisfiable core [2023-12-19 17:56:47,680 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:56:49,800 INFO L134 CoverageAnalysis]: Checked inductivity of 5590 backedges. 3698 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:56:49,801 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:56:51,200 INFO L134 CoverageAnalysis]: Checked inductivity of 5590 backedges. 3698 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:56:51,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643924449] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:56:51,201 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:56:51,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90, 90] total 136 [2023-12-19 17:56:51,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424957872] [2023-12-19 17:56:51,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:56:51,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 136 states [2023-12-19 17:56:51,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:56:51,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2023-12-19 17:56:51,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4143, Invalid=14217, Unknown=0, NotChecked=0, Total=18360 [2023-12-19 17:56:51,203 INFO L87 Difference]: Start difference. First operand 270 states and 273 transitions. Second operand has 136 states, 136 states have (on average 3.301470588235294) internal successors, (449), 136 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:56:52,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:56:52,788 INFO L93 Difference]: Finished difference Result 627 states and 719 transitions. [2023-12-19 17:56:52,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2023-12-19 17:56:52,788 INFO L78 Accepts]: Start accepts. Automaton has has 136 states, 136 states have (on average 3.301470588235294) internal successors, (449), 136 states have internal predecessors, (449), 0 states have call successors, (0), 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 269 [2023-12-19 17:56:52,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:56:52,789 INFO L225 Difference]: With dead ends: 627 [2023-12-19 17:56:52,789 INFO L226 Difference]: Without dead ends: 448 [2023-12-19 17:56:52,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 670 GetRequests, 406 SyntacticMatches, 86 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12032 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=8105, Invalid=24115, Unknown=0, NotChecked=0, Total=32220 [2023-12-19 17:56:52,791 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 745 mSDsluCounter, 1043 mSDsCounter, 0 mSdLazyCounter, 1278 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 745 SdHoareTripleChecker+Valid, 1134 SdHoareTripleChecker+Invalid, 1476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 1278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 17:56:52,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [745 Valid, 1134 Invalid, 1476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 1278 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 17:56:52,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2023-12-19 17:56:52,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 272. [2023-12-19 17:56:52,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 271 states have (on average 1.014760147601476) internal successors, (275), 271 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:56:52,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 275 transitions. [2023-12-19 17:56:52,804 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 275 transitions. Word has length 269 [2023-12-19 17:56:52,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:56:52,804 INFO L495 AbstractCegarLoop]: Abstraction has 272 states and 275 transitions. [2023-12-19 17:56:52,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 136 states, 136 states have (on average 3.301470588235294) internal successors, (449), 136 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:56:52,805 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 275 transitions. [2023-12-19 17:56:52,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2023-12-19 17:56:52,805 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:56:52,805 INFO L195 NwaCegarLoop]: trace histogram [45, 44, 44, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:56:52,822 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2023-12-19 17:56:53,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:56:53,012 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:56:53,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:56:53,012 INFO L85 PathProgramCache]: Analyzing trace with hash 2006189287, now seen corresponding path program 52 times [2023-12-19 17:56:53,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:56:53,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110802264] [2023-12-19 17:56:53,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:56:53,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:56:53,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:56:54,893 INFO L134 CoverageAnalysis]: Checked inductivity of 5678 backedges. 1892 proven. 3786 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:56:54,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:56:54,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110802264] [2023-12-19 17:56:54,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110802264] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:56:54,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829180807] [2023-12-19 17:56:54,893 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-19 17:56:54,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:56:54,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:56:54,894 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 17:56:54,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2023-12-19 17:56:55,035 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-19 17:56:55,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:56:55,041 INFO L262 TraceCheckSpWp]: Trace formula consists of 1001 conjuncts, 94 conjunts are in the unsatisfiable core [2023-12-19 17:56:55,043 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:56:55,316 INFO L134 CoverageAnalysis]: Checked inductivity of 5678 backedges. 1980 proven. 3698 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:56:55,316 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:56:56,602 INFO L134 CoverageAnalysis]: Checked inductivity of 5678 backedges. 1980 proven. 3698 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:56:56,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829180807] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:56:56,603 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:56:56,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 50 [2023-12-19 17:56:56,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355425936] [2023-12-19 17:56:56,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:56:56,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-12-19 17:56:56,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:56:56,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-12-19 17:56:56,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1137, Invalid=1413, Unknown=0, NotChecked=0, Total=2550 [2023-12-19 17:56:56,604 INFO L87 Difference]: Start difference. First operand 272 states and 275 transitions. Second operand has 51 states, 51 states have (on average 5.764705882352941) internal successors, (294), 50 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:56:57,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:56:57,066 INFO L93 Difference]: Finished difference Result 289 states and 293 transitions. [2023-12-19 17:56:57,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2023-12-19 17:56:57,067 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 5.764705882352941) internal successors, (294), 50 states have internal predecessors, (294), 0 states have call successors, (0), 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 271 [2023-12-19 17:56:57,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:56:57,068 INFO L225 Difference]: With dead ends: 289 [2023-12-19 17:56:57,068 INFO L226 Difference]: Without dead ends: 287 [2023-12-19 17:56:57,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 676 GetRequests, 494 SyntacticMatches, 87 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4519 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=3436, Invalid=5876, Unknown=0, NotChecked=0, Total=9312 [2023-12-19 17:56:57,069 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 58 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 17:56:57,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 427 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 17:56:57,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2023-12-19 17:56:57,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 280. [2023-12-19 17:56:57,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 279 states have (on average 1.014336917562724) internal successors, (283), 279 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:56:57,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 283 transitions. [2023-12-19 17:56:57,082 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 283 transitions. Word has length 271 [2023-12-19 17:56:57,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:56:57,082 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 283 transitions. [2023-12-19 17:56:57,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 5.764705882352941) internal successors, (294), 50 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:56:57,082 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 283 transitions. [2023-12-19 17:56:57,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2023-12-19 17:56:57,083 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:56:57,083 INFO L195 NwaCegarLoop]: trace histogram [46, 45, 45, 45, 45, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:56:57,089 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2023-12-19 17:56:57,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2023-12-19 17:56:57,289 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:56:57,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:56:57,289 INFO L85 PathProgramCache]: Analyzing trace with hash 685539277, now seen corresponding path program 53 times [2023-12-19 17:56:57,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:56:57,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966391293] [2023-12-19 17:56:57,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:56:57,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:56:57,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:56:59,843 INFO L134 CoverageAnalysis]: Checked inductivity of 6030 backedges. 3918 proven. 2112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:56:59,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:56:59,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966391293] [2023-12-19 17:56:59,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966391293] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:56:59,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610717776] [2023-12-19 17:56:59,843 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-19 17:56:59,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:56:59,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:56:59,846 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 17:56:59,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2023-12-19 17:57:00,046 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2023-12-19 17:57:00,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:57:00,051 INFO L262 TraceCheckSpWp]: Trace formula consists of 1025 conjuncts, 93 conjunts are in the unsatisfiable core [2023-12-19 17:57:00,054 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:57:02,222 INFO L134 CoverageAnalysis]: Checked inductivity of 6030 backedges. 4050 proven. 1980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:57:02,222 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:57:04,580 INFO L134 CoverageAnalysis]: Checked inductivity of 6030 backedges. 4050 proven. 1980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:57:04,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1610717776] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:57:04,581 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:57:04,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93, 93] total 143 [2023-12-19 17:57:04,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956195695] [2023-12-19 17:57:04,581 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:57:04,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 143 states [2023-12-19 17:57:04,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:57:04,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants. [2023-12-19 17:57:04,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4610, Invalid=15696, Unknown=0, NotChecked=0, Total=20306 [2023-12-19 17:57:04,584 INFO L87 Difference]: Start difference. First operand 280 states and 283 transitions. Second operand has 143 states, 143 states have (on average 3.3286713286713288) internal successors, (476), 143 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:57:07,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:57:07,376 INFO L93 Difference]: Finished difference Result 834 states and 931 transitions. [2023-12-19 17:57:07,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2023-12-19 17:57:07,377 INFO L78 Accepts]: Start accepts. Automaton has has 143 states, 143 states have (on average 3.3286713286713288) internal successors, (476), 143 states have internal predecessors, (476), 0 states have call successors, (0), 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 279 [2023-12-19 17:57:07,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:57:07,378 INFO L225 Difference]: With dead ends: 834 [2023-12-19 17:57:07,378 INFO L226 Difference]: Without dead ends: 468 [2023-12-19 17:57:07,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 740 GetRequests, 421 SyntacticMatches, 87 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18295 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=13211, Invalid=41311, Unknown=0, NotChecked=0, Total=54522 [2023-12-19 17:57:07,381 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 883 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 1361 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 883 SdHoareTripleChecker+Valid, 1217 SdHoareTripleChecker+Invalid, 1605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 1361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 17:57:07,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [883 Valid, 1217 Invalid, 1605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 1361 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 17:57:07,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2023-12-19 17:57:07,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 284. [2023-12-19 17:57:07,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 283 states have (on average 1.0141342756183747) internal successors, (287), 283 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:57:07,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 287 transitions. [2023-12-19 17:57:07,396 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 287 transitions. Word has length 279 [2023-12-19 17:57:07,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:57:07,396 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 287 transitions. [2023-12-19 17:57:07,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 143 states, 143 states have (on average 3.3286713286713288) internal successors, (476), 143 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:57:07,396 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 287 transitions. [2023-12-19 17:57:07,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2023-12-19 17:57:07,397 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:57:07,397 INFO L195 NwaCegarLoop]: trace histogram [47, 46, 46, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:57:07,403 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2023-12-19 17:57:07,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2023-12-19 17:57:07,603 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:57:07,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:57:07,603 INFO L85 PathProgramCache]: Analyzing trace with hash 431287511, now seen corresponding path program 54 times [2023-12-19 17:57:07,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:57:07,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694186775] [2023-12-19 17:57:07,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:57:07,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:57:07,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:57:09,495 INFO L134 CoverageAnalysis]: Checked inductivity of 6212 backedges. 2070 proven. 4142 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:57:09,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:57:09,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694186775] [2023-12-19 17:57:09,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694186775] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:57:09,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069690119] [2023-12-19 17:57:09,496 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-19 17:57:09,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:57:09,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:57:09,497 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 17:57:09,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2023-12-19 17:57:09,703 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 47 check-sat command(s) [2023-12-19 17:57:09,703 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:57:09,708 INFO L262 TraceCheckSpWp]: Trace formula consists of 1045 conjuncts, 98 conjunts are in the unsatisfiable core [2023-12-19 17:57:09,711 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:57:09,864 INFO L134 CoverageAnalysis]: Checked inductivity of 6212 backedges. 2162 proven. 4050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:57:09,864 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:57:10,874 INFO L134 CoverageAnalysis]: Checked inductivity of 6212 backedges. 2162 proven. 4050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:57:10,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069690119] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:57:10,875 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:57:10,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 52 [2023-12-19 17:57:10,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159841954] [2023-12-19 17:57:10,875 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:57:10,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-12-19 17:57:10,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:57:10,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-12-19 17:57:10,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1234, Invalid=1522, Unknown=0, NotChecked=0, Total=2756 [2023-12-19 17:57:10,876 INFO L87 Difference]: Start difference. First operand 284 states and 287 transitions. Second operand has 53 states, 53 states have (on average 5.773584905660377) internal successors, (306), 52 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:57:11,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:57:11,399 INFO L93 Difference]: Finished difference Result 301 states and 305 transitions. [2023-12-19 17:57:11,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2023-12-19 17:57:11,400 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 5.773584905660377) internal successors, (306), 52 states have internal predecessors, (306), 0 states have call successors, (0), 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 283 [2023-12-19 17:57:11,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:57:11,401 INFO L225 Difference]: With dead ends: 301 [2023-12-19 17:57:11,401 INFO L226 Difference]: Without dead ends: 299 [2023-12-19 17:57:11,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 706 GetRequests, 516 SyntacticMatches, 91 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4909 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=3729, Invalid=6371, Unknown=0, NotChecked=0, Total=10100 [2023-12-19 17:57:11,402 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 109 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 17:57:11,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 463 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 17:57:11,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2023-12-19 17:57:11,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 292. [2023-12-19 17:57:11,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 291 states have (on average 1.013745704467354) internal successors, (295), 291 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:57:11,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 295 transitions. [2023-12-19 17:57:11,416 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 295 transitions. Word has length 283 [2023-12-19 17:57:11,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:57:11,416 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 295 transitions. [2023-12-19 17:57:11,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 5.773584905660377) internal successors, (306), 52 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:57:11,417 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 295 transitions. [2023-12-19 17:57:11,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2023-12-19 17:57:11,417 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:57:11,418 INFO L195 NwaCegarLoop]: trace histogram [48, 47, 47, 47, 47, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:57:11,442 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2023-12-19 17:57:11,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:57:11,624 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:57:11,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:57:11,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1800304573, now seen corresponding path program 55 times [2023-12-19 17:57:11,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:57:11,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053367397] [2023-12-19 17:57:11,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:57:11,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:57:11,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:57:14,560 INFO L134 CoverageAnalysis]: Checked inductivity of 6580 backedges. 4280 proven. 2300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:57:14,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:57:14,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053367397] [2023-12-19 17:57:14,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053367397] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:57:14,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580797631] [2023-12-19 17:57:14,561 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-19 17:57:14,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:57:14,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:57:14,562 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 17:57:14,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2023-12-19 17:57:14,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:57:14,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 1069 conjuncts, 96 conjunts are in the unsatisfiable core [2023-12-19 17:57:14,712 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:57:17,289 INFO L134 CoverageAnalysis]: Checked inductivity of 6580 backedges. 4416 proven. 2162 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 17:57:17,289 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:57:18,865 INFO L134 CoverageAnalysis]: Checked inductivity of 6580 backedges. 4416 proven. 2162 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 17:57:18,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1580797631] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:57:18,865 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:57:18,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 96, 96] total 146 [2023-12-19 17:57:18,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111089163] [2023-12-19 17:57:18,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:57:18,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 146 states [2023-12-19 17:57:18,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:57:18,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2023-12-19 17:57:18,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4756, Invalid=16414, Unknown=0, NotChecked=0, Total=21170 [2023-12-19 17:57:18,868 INFO L87 Difference]: Start difference. First operand 292 states and 295 transitions. Second operand has 146 states, 146 states have (on average 3.335616438356164) internal successors, (487), 146 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:57:20,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:57:20,596 INFO L93 Difference]: Finished difference Result 675 states and 773 transitions. [2023-12-19 17:57:20,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2023-12-19 17:57:20,596 INFO L78 Accepts]: Start accepts. Automaton has has 146 states, 146 states have (on average 3.335616438356164) internal successors, (487), 146 states have internal predecessors, (487), 0 states have call successors, (0), 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 291 [2023-12-19 17:57:20,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:57:20,597 INFO L225 Difference]: With dead ends: 675 [2023-12-19 17:57:20,597 INFO L226 Difference]: Without dead ends: 482 [2023-12-19 17:57:20,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 724 GetRequests, 441 SyntacticMatches, 92 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13887 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=9270, Invalid=27786, Unknown=0, NotChecked=0, Total=37056 [2023-12-19 17:57:20,600 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 837 mSDsluCounter, 964 mSDsCounter, 0 mSdLazyCounter, 1206 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 837 SdHoareTripleChecker+Valid, 1061 SdHoareTripleChecker+Invalid, 1427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 1206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 17:57:20,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [837 Valid, 1061 Invalid, 1427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 1206 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 17:57:20,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2023-12-19 17:57:20,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 294. [2023-12-19 17:57:20,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 293 states have (on average 1.0136518771331058) internal successors, (297), 293 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:57:20,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 297 transitions. [2023-12-19 17:57:20,615 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 297 transitions. Word has length 291 [2023-12-19 17:57:20,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:57:20,615 INFO L495 AbstractCegarLoop]: Abstraction has 294 states and 297 transitions. [2023-12-19 17:57:20,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 146 states, 146 states have (on average 3.335616438356164) internal successors, (487), 146 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:57:20,615 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 297 transitions. [2023-12-19 17:57:20,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2023-12-19 17:57:20,616 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:57:20,616 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:57:20,622 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2023-12-19 17:57:20,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:57:20,816 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:57:20,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:57:20,817 INFO L85 PathProgramCache]: Analyzing trace with hash -545719966, now seen corresponding path program 56 times [2023-12-19 17:57:20,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:57:20,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404392657] [2023-12-19 17:57:20,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:57:20,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:57:20,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:57:24,305 INFO L134 CoverageAnalysis]: Checked inductivity of 6674 backedges. 4280 proven. 2394 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:57:24,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:57:24,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404392657] [2023-12-19 17:57:24,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404392657] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:57:24,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562973372] [2023-12-19 17:57:24,306 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-19 17:57:24,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:57:24,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:57:24,308 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 17:57:24,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2023-12-19 17:57:24,467 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-19 17:57:24,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:57:24,471 INFO L262 TraceCheckSpWp]: Trace formula consists of 1079 conjuncts, 98 conjunts are in the unsatisfiable core [2023-12-19 17:57:24,473 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:57:27,322 INFO L134 CoverageAnalysis]: Checked inductivity of 6674 backedges. 4418 proven. 2256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:57:27,323 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:57:29,911 INFO L134 CoverageAnalysis]: Checked inductivity of 6674 backedges. 4418 proven. 2256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:57:29,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562973372] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:57:29,912 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:57:29,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98, 98] total 148 [2023-12-19 17:57:29,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857496954] [2023-12-19 17:57:29,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:57:29,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 148 states [2023-12-19 17:57:29,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:57:29,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 148 interpolants. [2023-12-19 17:57:29,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4903, Invalid=16853, Unknown=0, NotChecked=0, Total=21756 [2023-12-19 17:57:29,915 INFO L87 Difference]: Start difference. First operand 294 states and 297 transitions. Second operand has 148 states, 148 states have (on average 3.304054054054054) internal successors, (489), 148 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:57:31,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:57:31,719 INFO L93 Difference]: Finished difference Result 683 states and 783 transitions. [2023-12-19 17:57:31,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2023-12-19 17:57:31,719 INFO L78 Accepts]: Start accepts. Automaton has has 148 states, 148 states have (on average 3.304054054054054) internal successors, (489), 148 states have internal predecessors, (489), 0 states have call successors, (0), 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 293 [2023-12-19 17:57:31,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:57:31,721 INFO L225 Difference]: With dead ends: 683 [2023-12-19 17:57:31,721 INFO L226 Difference]: Without dead ends: 488 [2023-12-19 17:57:31,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 730 GetRequests, 442 SyntacticMatches, 94 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14280 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=9609, Invalid=28611, Unknown=0, NotChecked=0, Total=38220 [2023-12-19 17:57:31,723 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 632 mSDsluCounter, 1276 mSDsCounter, 0 mSdLazyCounter, 1517 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 632 SdHoareTripleChecker+Valid, 1375 SdHoareTripleChecker+Invalid, 1687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 1517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 17:57:31,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [632 Valid, 1375 Invalid, 1687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 1517 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 17:57:31,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2023-12-19 17:57:31,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 296. [2023-12-19 17:57:31,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 295 states have (on average 1.0135593220338983) internal successors, (299), 295 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:57:31,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 299 transitions. [2023-12-19 17:57:31,739 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 299 transitions. Word has length 293 [2023-12-19 17:57:31,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:57:31,739 INFO L495 AbstractCegarLoop]: Abstraction has 296 states and 299 transitions. [2023-12-19 17:57:31,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 148 states, 148 states have (on average 3.304054054054054) internal successors, (489), 148 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:57:31,739 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 299 transitions. [2023-12-19 17:57:31,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2023-12-19 17:57:31,740 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:57:31,740 INFO L195 NwaCegarLoop]: trace histogram [49, 48, 48, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:57:31,748 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2023-12-19 17:57:31,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:57:31,946 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:57:31,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:57:31,947 INFO L85 PathProgramCache]: Analyzing trace with hash -217471545, now seen corresponding path program 57 times [2023-12-19 17:57:31,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:57:31,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434363424] [2023-12-19 17:57:31,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:57:31,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:57:32,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:57:33,869 INFO L134 CoverageAnalysis]: Checked inductivity of 6770 backedges. 2256 proven. 4514 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:57:33,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:57:33,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434363424] [2023-12-19 17:57:33,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434363424] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:57:33,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875882691] [2023-12-19 17:57:33,869 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-19 17:57:33,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:57:33,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:57:33,897 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 17:57:33,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2023-12-19 17:57:34,150 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 49 check-sat command(s) [2023-12-19 17:57:34,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:57:34,156 INFO L262 TraceCheckSpWp]: Trace formula consists of 1089 conjuncts, 102 conjunts are in the unsatisfiable core [2023-12-19 17:57:34,159 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:57:34,335 INFO L134 CoverageAnalysis]: Checked inductivity of 6770 backedges. 2352 proven. 4418 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:57:34,335 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:57:35,741 INFO L134 CoverageAnalysis]: Checked inductivity of 6770 backedges. 2352 proven. 4418 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:57:35,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875882691] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:57:35,742 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:57:35,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51, 51] total 54 [2023-12-19 17:57:35,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77200997] [2023-12-19 17:57:35,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:57:35,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2023-12-19 17:57:35,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:57:35,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2023-12-19 17:57:35,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1335, Invalid=1635, Unknown=0, NotChecked=0, Total=2970 [2023-12-19 17:57:35,743 INFO L87 Difference]: Start difference. First operand 296 states and 299 transitions. Second operand has 55 states, 55 states have (on average 5.781818181818182) internal successors, (318), 54 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:57:36,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:57:36,637 INFO L93 Difference]: Finished difference Result 313 states and 317 transitions. [2023-12-19 17:57:36,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2023-12-19 17:57:36,637 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 5.781818181818182) internal successors, (318), 54 states have internal predecessors, (318), 0 states have call successors, (0), 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 295 [2023-12-19 17:57:36,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:57:36,638 INFO L225 Difference]: With dead ends: 313 [2023-12-19 17:57:36,638 INFO L226 Difference]: Without dead ends: 311 [2023-12-19 17:57:36,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 736 GetRequests, 538 SyntacticMatches, 95 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5315 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=4034, Invalid=6886, Unknown=0, NotChecked=0, Total=10920 [2023-12-19 17:57:36,640 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 60 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 17:57:36,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 474 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 17:57:36,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2023-12-19 17:57:36,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 304. [2023-12-19 17:57:36,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 303 states have (on average 1.0132013201320131) internal successors, (307), 303 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:57:36,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 307 transitions. [2023-12-19 17:57:36,655 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 307 transitions. Word has length 295 [2023-12-19 17:57:36,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:57:36,656 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 307 transitions. [2023-12-19 17:57:36,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 5.781818181818182) internal successors, (318), 54 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:57:36,656 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 307 transitions. [2023-12-19 17:57:36,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2023-12-19 17:57:36,657 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:57:36,657 INFO L195 NwaCegarLoop]: trace histogram [50, 49, 49, 49, 49, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:57:36,667 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2023-12-19 17:57:36,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2023-12-19 17:57:36,864 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:57:36,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:57:36,864 INFO L85 PathProgramCache]: Analyzing trace with hash -527220563, now seen corresponding path program 58 times [2023-12-19 17:57:36,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:57:36,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637191323] [2023-12-19 17:57:36,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:57:36,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:57:36,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:57:39,978 INFO L134 CoverageAnalysis]: Checked inductivity of 7154 backedges. 4658 proven. 2496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:57:39,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:57:39,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637191323] [2023-12-19 17:57:39,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637191323] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:57:39,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96353644] [2023-12-19 17:57:39,978 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-19 17:57:39,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:57:39,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:57:39,979 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 17:57:39,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2023-12-19 17:57:40,141 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-19 17:57:40,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:57:40,146 INFO L262 TraceCheckSpWp]: Trace formula consists of 1113 conjuncts, 101 conjunts are in the unsatisfiable core [2023-12-19 17:57:40,149 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:57:42,447 INFO L134 CoverageAnalysis]: Checked inductivity of 7154 backedges. 4802 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:57:42,448 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:57:45,094 INFO L134 CoverageAnalysis]: Checked inductivity of 7154 backedges. 4802 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:57:45,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [96353644] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:57:45,094 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:57:45,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101, 101] total 155 [2023-12-19 17:57:45,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868812529] [2023-12-19 17:57:45,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:57:45,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 155 states [2023-12-19 17:57:45,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:57:45,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 155 interpolants. [2023-12-19 17:57:45,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5410, Invalid=18460, Unknown=0, NotChecked=0, Total=23870 [2023-12-19 17:57:45,097 INFO L87 Difference]: Start difference. First operand 304 states and 307 transitions. Second operand has 155 states, 155 states have (on average 3.329032258064516) internal successors, (516), 155 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:57:47,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:57:47,861 INFO L93 Difference]: Finished difference Result 906 states and 1011 transitions. [2023-12-19 17:57:47,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2023-12-19 17:57:47,861 INFO L78 Accepts]: Start accepts. Automaton has has 155 states, 155 states have (on average 3.329032258064516) internal successors, (516), 155 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 303 [2023-12-19 17:57:47,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:57:47,862 INFO L225 Difference]: With dead ends: 906 [2023-12-19 17:57:47,862 INFO L226 Difference]: Without dead ends: 508 [2023-12-19 17:57:47,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 804 GetRequests, 457 SyntacticMatches, 95 SemanticMatches, 252 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21589 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=15559, Invalid=48703, Unknown=0, NotChecked=0, Total=64262 [2023-12-19 17:57:47,868 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 994 mSDsluCounter, 1373 mSDsCounter, 0 mSdLazyCounter, 1636 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 994 SdHoareTripleChecker+Valid, 1474 SdHoareTripleChecker+Invalid, 1910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 1636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 17:57:47,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [994 Valid, 1474 Invalid, 1910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 1636 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 17:57:47,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2023-12-19 17:57:47,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 308. [2023-12-19 17:57:47,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 307 states have (on average 1.013029315960912) internal successors, (311), 307 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:57:47,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 311 transitions. [2023-12-19 17:57:47,906 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 311 transitions. Word has length 303 [2023-12-19 17:57:47,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:57:47,906 INFO L495 AbstractCegarLoop]: Abstraction has 308 states and 311 transitions. [2023-12-19 17:57:47,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 155 states, 155 states have (on average 3.329032258064516) internal successors, (516), 155 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:57:47,906 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 311 transitions. [2023-12-19 17:57:47,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2023-12-19 17:57:47,907 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:57:47,907 INFO L195 NwaCegarLoop]: trace histogram [51, 50, 50, 49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:57:47,913 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2023-12-19 17:57:48,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable60 [2023-12-19 17:57:48,113 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:57:48,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:57:48,114 INFO L85 PathProgramCache]: Analyzing trace with hash -2078822473, now seen corresponding path program 59 times [2023-12-19 17:57:48,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:57:48,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920918468] [2023-12-19 17:57:48,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:57:48,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:57:48,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:57:50,220 INFO L134 CoverageAnalysis]: Checked inductivity of 7352 backedges. 2450 proven. 4902 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:57:50,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:57:50,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920918468] [2023-12-19 17:57:50,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920918468] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:57:50,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484873689] [2023-12-19 17:57:50,221 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-19 17:57:50,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:57:50,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:57:50,222 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 17:57:50,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2023-12-19 17:57:50,477 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 51 check-sat command(s) [2023-12-19 17:57:50,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:57:50,483 INFO L262 TraceCheckSpWp]: Trace formula consists of 1133 conjuncts, 106 conjunts are in the unsatisfiable core [2023-12-19 17:57:50,486 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:57:50,649 INFO L134 CoverageAnalysis]: Checked inductivity of 7352 backedges. 2550 proven. 4802 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:57:50,649 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:57:51,889 INFO L134 CoverageAnalysis]: Checked inductivity of 7352 backedges. 2550 proven. 4802 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:57:51,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484873689] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:57:51,889 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:57:51,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53, 53] total 56 [2023-12-19 17:57:51,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608507397] [2023-12-19 17:57:51,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:57:51,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2023-12-19 17:57:51,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:57:51,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2023-12-19 17:57:51,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1440, Invalid=1752, Unknown=0, NotChecked=0, Total=3192 [2023-12-19 17:57:51,891 INFO L87 Difference]: Start difference. First operand 308 states and 311 transitions. Second operand has 57 states, 57 states have (on average 5.7894736842105265) internal successors, (330), 56 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:57:52,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:57:52,591 INFO L93 Difference]: Finished difference Result 325 states and 329 transitions. [2023-12-19 17:57:52,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2023-12-19 17:57:52,592 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 5.7894736842105265) internal successors, (330), 56 states have internal predecessors, (330), 0 states have call successors, (0), 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 307 [2023-12-19 17:57:52,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:57:52,593 INFO L225 Difference]: With dead ends: 325 [2023-12-19 17:57:52,593 INFO L226 Difference]: Without dead ends: 323 [2023-12-19 17:57:52,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 766 GetRequests, 560 SyntacticMatches, 99 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5737 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=4351, Invalid=7421, Unknown=0, NotChecked=0, Total=11772 [2023-12-19 17:57:52,595 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 66 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 17:57:52,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 479 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 17:57:52,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2023-12-19 17:57:52,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 316. [2023-12-19 17:57:52,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 315 states have (on average 1.0126984126984127) internal successors, (319), 315 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:57:52,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 319 transitions. [2023-12-19 17:57:52,612 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 319 transitions. Word has length 307 [2023-12-19 17:57:52,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:57:52,612 INFO L495 AbstractCegarLoop]: Abstraction has 316 states and 319 transitions. [2023-12-19 17:57:52,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 5.7894736842105265) internal successors, (330), 56 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:57:52,612 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 319 transitions. [2023-12-19 17:57:52,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2023-12-19 17:57:52,613 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:57:52,613 INFO L195 NwaCegarLoop]: trace histogram [52, 51, 51, 51, 51, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:57:52,620 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2023-12-19 17:57:52,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2023-12-19 17:57:52,821 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:57:52,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:57:52,821 INFO L85 PathProgramCache]: Analyzing trace with hash -340764003, now seen corresponding path program 60 times [2023-12-19 17:57:52,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:57:52,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586232166] [2023-12-19 17:57:52,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:57:52,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:57:52,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:57:56,324 INFO L134 CoverageAnalysis]: Checked inductivity of 7752 backedges. 5052 proven. 2700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:57:56,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:57:56,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586232166] [2023-12-19 17:57:56,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586232166] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:57:56,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317824877] [2023-12-19 17:57:56,325 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-19 17:57:56,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:57:56,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:57:56,326 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 17:57:56,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2023-12-19 17:57:56,566 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 52 check-sat command(s) [2023-12-19 17:57:56,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:57:56,572 INFO L262 TraceCheckSpWp]: Trace formula consists of 1157 conjuncts, 105 conjunts are in the unsatisfiable core [2023-12-19 17:57:56,575 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:57:59,018 INFO L134 CoverageAnalysis]: Checked inductivity of 7752 backedges. 5202 proven. 2550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:57:59,018 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:58:01,696 INFO L134 CoverageAnalysis]: Checked inductivity of 7752 backedges. 5202 proven. 2550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:58:01,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317824877] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:58:01,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:58:01,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 105, 105] total 161 [2023-12-19 17:58:01,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570159895] [2023-12-19 17:58:01,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:58:01,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 161 states [2023-12-19 17:58:01,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:58:01,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 161 interpolants. [2023-12-19 17:58:01,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5834, Invalid=19926, Unknown=0, NotChecked=0, Total=25760 [2023-12-19 17:58:01,700 INFO L87 Difference]: Start difference. First operand 316 states and 319 transitions. Second operand has 161 states, 161 states have (on average 3.329192546583851) internal successors, (536), 161 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:58:05,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:58:05,132 INFO L93 Difference]: Finished difference Result 942 states and 1051 transitions. [2023-12-19 17:58:05,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2023-12-19 17:58:05,132 INFO L78 Accepts]: Start accepts. Automaton has has 161 states, 161 states have (on average 3.329192546583851) internal successors, (536), 161 states have internal predecessors, (536), 0 states have call successors, (0), 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 315 [2023-12-19 17:58:05,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:58:05,133 INFO L225 Difference]: With dead ends: 942 [2023-12-19 17:58:05,133 INFO L226 Difference]: Without dead ends: 528 [2023-12-19 17:58:05,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 836 GetRequests, 475 SyntacticMatches, 99 SemanticMatches, 262 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23338 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=16805, Invalid=52627, Unknown=0, NotChecked=0, Total=69432 [2023-12-19 17:58:05,138 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 1082 mSDsluCounter, 1558 mSDsCounter, 0 mSdLazyCounter, 1842 mSolverCounterSat, 296 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1082 SdHoareTripleChecker+Valid, 1663 SdHoareTripleChecker+Invalid, 2138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 296 IncrementalHoareTripleChecker+Valid, 1842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 17:58:05,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1082 Valid, 1663 Invalid, 2138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [296 Valid, 1842 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 17:58:05,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2023-12-19 17:58:05,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 320. [2023-12-19 17:58:05,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 319 states have (on average 1.0125391849529781) internal successors, (323), 319 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:58:05,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 323 transitions. [2023-12-19 17:58:05,156 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 323 transitions. Word has length 315 [2023-12-19 17:58:05,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:58:05,156 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 323 transitions. [2023-12-19 17:58:05,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 161 states, 161 states have (on average 3.329192546583851) internal successors, (536), 161 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:58:05,156 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 323 transitions. [2023-12-19 17:58:05,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2023-12-19 17:58:05,157 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:58:05,157 INFO L195 NwaCegarLoop]: trace histogram [53, 52, 52, 51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:58:05,164 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2023-12-19 17:58:05,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:58:05,364 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:58:05,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:58:05,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1977316697, now seen corresponding path program 61 times [2023-12-19 17:58:05,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:58:05,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901359207] [2023-12-19 17:58:05,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:58:05,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:58:05,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:58:08,056 INFO L134 CoverageAnalysis]: Checked inductivity of 7958 backedges. 2652 proven. 5306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:58:08,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:58:08,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901359207] [2023-12-19 17:58:08,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901359207] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:58:08,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104232050] [2023-12-19 17:58:08,056 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-19 17:58:08,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:58:08,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:58:08,058 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 17:58:08,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2023-12-19 17:58:08,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:58:08,223 INFO L262 TraceCheckSpWp]: Trace formula consists of 1177 conjuncts, 110 conjunts are in the unsatisfiable core [2023-12-19 17:58:08,226 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:58:08,509 INFO L134 CoverageAnalysis]: Checked inductivity of 7958 backedges. 2756 proven. 5202 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:58:08,509 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:58:10,182 INFO L134 CoverageAnalysis]: Checked inductivity of 7958 backedges. 2756 proven. 5202 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:58:10,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [104232050] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:58:10,183 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:58:10,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55, 55] total 58 [2023-12-19 17:58:10,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206355308] [2023-12-19 17:58:10,183 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:58:10,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2023-12-19 17:58:10,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:58:10,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2023-12-19 17:58:10,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1549, Invalid=1873, Unknown=0, NotChecked=0, Total=3422 [2023-12-19 17:58:10,184 INFO L87 Difference]: Start difference. First operand 320 states and 323 transitions. Second operand has 59 states, 59 states have (on average 5.796610169491525) internal successors, (342), 58 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:58:10,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:58:10,886 INFO L93 Difference]: Finished difference Result 337 states and 341 transitions. [2023-12-19 17:58:10,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2023-12-19 17:58:10,887 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 5.796610169491525) internal successors, (342), 58 states have internal predecessors, (342), 0 states have call successors, (0), 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 319 [2023-12-19 17:58:10,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:58:10,888 INFO L225 Difference]: With dead ends: 337 [2023-12-19 17:58:10,888 INFO L226 Difference]: Without dead ends: 335 [2023-12-19 17:58:10,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 796 GetRequests, 582 SyntacticMatches, 103 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6175 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=4680, Invalid=7976, Unknown=0, NotChecked=0, Total=12656 [2023-12-19 17:58:10,890 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 64 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 17:58:10,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 511 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 17:58:10,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2023-12-19 17:58:10,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 328. [2023-12-19 17:58:10,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 327 states have (on average 1.0122324159021407) internal successors, (331), 327 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:58:10,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 331 transitions. [2023-12-19 17:58:10,912 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 331 transitions. Word has length 319 [2023-12-19 17:58:10,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:58:10,913 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 331 transitions. [2023-12-19 17:58:10,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 5.796610169491525) internal successors, (342), 58 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:58:10,913 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 331 transitions. [2023-12-19 17:58:10,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2023-12-19 17:58:10,914 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:58:10,914 INFO L195 NwaCegarLoop]: trace histogram [54, 53, 53, 53, 53, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:58:10,939 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2023-12-19 17:58:11,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:58:11,122 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:58:11,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:58:11,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1818969485, now seen corresponding path program 62 times [2023-12-19 17:58:11,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:58:11,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815975362] [2023-12-19 17:58:11,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:58:11,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:58:11,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:58:15,158 INFO L134 CoverageAnalysis]: Checked inductivity of 8374 backedges. 5462 proven. 2912 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:58:15,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:58:15,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815975362] [2023-12-19 17:58:15,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815975362] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:58:15,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602747039] [2023-12-19 17:58:15,159 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-19 17:58:15,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:58:15,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:58:15,160 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 17:58:15,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2023-12-19 17:58:15,335 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-19 17:58:15,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:58:15,341 INFO L262 TraceCheckSpWp]: Trace formula consists of 1201 conjuncts, 108 conjunts are in the unsatisfiable core [2023-12-19 17:58:15,344 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:58:18,801 INFO L134 CoverageAnalysis]: Checked inductivity of 8374 backedges. 5616 proven. 2756 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 17:58:18,802 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:58:20,946 INFO L134 CoverageAnalysis]: Checked inductivity of 8374 backedges. 5616 proven. 2756 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 17:58:20,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602747039] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:58:20,946 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:58:20,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 108, 108] total 164 [2023-12-19 17:58:20,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761959381] [2023-12-19 17:58:20,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:58:20,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 164 states [2023-12-19 17:58:20,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:58:20,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 164 interpolants. [2023-12-19 17:58:20,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5998, Invalid=20734, Unknown=0, NotChecked=0, Total=26732 [2023-12-19 17:58:20,956 INFO L87 Difference]: Start difference. First operand 328 states and 331 transitions. Second operand has 164 states, 164 states have (on average 3.3353658536585367) internal successors, (547), 164 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:58:23,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:58:23,423 INFO L93 Difference]: Finished difference Result 759 states and 869 transitions. [2023-12-19 17:58:23,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2023-12-19 17:58:23,424 INFO L78 Accepts]: Start accepts. Automaton has has 164 states, 164 states have (on average 3.3353658536585367) internal successors, (547), 164 states have internal predecessors, (547), 0 states have call successors, (0), 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 [2023-12-19 17:58:23,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:58:23,425 INFO L225 Difference]: With dead ends: 759 [2023-12-19 17:58:23,425 INFO L226 Difference]: Without dead ends: 542 [2023-12-19 17:58:23,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 814 GetRequests, 495 SyntacticMatches, 104 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17571 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=11724, Invalid=35148, Unknown=0, NotChecked=0, Total=46872 [2023-12-19 17:58:23,429 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 863 mSDsluCounter, 1424 mSDsCounter, 0 mSdLazyCounter, 1693 mSolverCounterSat, 229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 863 SdHoareTripleChecker+Valid, 1533 SdHoareTripleChecker+Invalid, 1922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 229 IncrementalHoareTripleChecker+Valid, 1693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 17:58:23,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [863 Valid, 1533 Invalid, 1922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [229 Valid, 1693 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 17:58:23,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2023-12-19 17:58:23,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 330. [2023-12-19 17:58:23,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 329 states have (on average 1.012158054711246) internal successors, (333), 329 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:58:23,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 333 transitions. [2023-12-19 17:58:23,452 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 333 transitions. Word has length 327 [2023-12-19 17:58:23,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:58:23,453 INFO L495 AbstractCegarLoop]: Abstraction has 330 states and 333 transitions. [2023-12-19 17:58:23,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 164 states, 164 states have (on average 3.3353658536585367) internal successors, (547), 164 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:58:23,453 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 333 transitions. [2023-12-19 17:58:23,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2023-12-19 17:58:23,454 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:58:23,454 INFO L195 NwaCegarLoop]: trace histogram [54, 54, 53, 53, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:58:23,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2023-12-19 17:58:23,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2023-12-19 17:58:23,661 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:58:23,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:58:23,661 INFO L85 PathProgramCache]: Analyzing trace with hash -799762254, now seen corresponding path program 63 times [2023-12-19 17:58:23,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:58:23,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795653553] [2023-12-19 17:58:23,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:58:23,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:58:23,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:58:27,682 INFO L134 CoverageAnalysis]: Checked inductivity of 8480 backedges. 5462 proven. 3018 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:58:27,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:58:27,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795653553] [2023-12-19 17:58:27,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795653553] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:58:27,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055123292] [2023-12-19 17:58:27,683 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-19 17:58:27,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:58:27,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:58:27,685 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 17:58:27,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2023-12-19 17:58:27,951 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 54 check-sat command(s) [2023-12-19 17:58:27,952 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:58:27,958 INFO L262 TraceCheckSpWp]: Trace formula consists of 1211 conjuncts, 110 conjunts are in the unsatisfiable core [2023-12-19 17:58:27,962 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:58:31,778 INFO L134 CoverageAnalysis]: Checked inductivity of 8480 backedges. 5618 proven. 2862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:58:31,778 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:58:33,882 INFO L134 CoverageAnalysis]: Checked inductivity of 8480 backedges. 5618 proven. 2862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:58:33,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055123292] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:58:33,882 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:58:33,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 110, 110] total 166 [2023-12-19 17:58:33,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748512979] [2023-12-19 17:58:33,882 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:58:33,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 166 states [2023-12-19 17:58:33,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:58:33,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 166 interpolants. [2023-12-19 17:58:33,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6163, Invalid=21227, Unknown=0, NotChecked=0, Total=27390 [2023-12-19 17:58:33,885 INFO L87 Difference]: Start difference. First operand 330 states and 333 transitions. Second operand has 166 states, 166 states have (on average 3.3072289156626504) internal successors, (549), 166 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:58:36,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:58:36,028 INFO L93 Difference]: Finished difference Result 767 states and 879 transitions. [2023-12-19 17:58:36,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2023-12-19 17:58:36,029 INFO L78 Accepts]: Start accepts. Automaton has has 166 states, 166 states have (on average 3.3072289156626504) internal successors, (549), 166 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 329 [2023-12-19 17:58:36,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:58:36,030 INFO L225 Difference]: With dead ends: 767 [2023-12-19 17:58:36,030 INFO L226 Difference]: Without dead ends: 548 [2023-12-19 17:58:36,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 820 GetRequests, 496 SyntacticMatches, 106 SemanticMatches, 218 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18012 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=12105, Invalid=36075, Unknown=0, NotChecked=0, Total=48180 [2023-12-19 17:58:36,035 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 835 mSDsluCounter, 1258 mSDsCounter, 0 mSdLazyCounter, 1519 mSolverCounterSat, 223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 835 SdHoareTripleChecker+Valid, 1369 SdHoareTripleChecker+Invalid, 1742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 1519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 17:58:36,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [835 Valid, 1369 Invalid, 1742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [223 Valid, 1519 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 17:58:36,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2023-12-19 17:58:36,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 332. [2023-12-19 17:58:36,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 331 states have (on average 1.012084592145015) internal successors, (335), 331 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:58:36,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 335 transitions. [2023-12-19 17:58:36,054 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 335 transitions. Word has length 329 [2023-12-19 17:58:36,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:58:36,054 INFO L495 AbstractCegarLoop]: Abstraction has 332 states and 335 transitions. [2023-12-19 17:58:36,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 166 states, 166 states have (on average 3.3072289156626504) internal successors, (549), 166 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:58:36,055 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 335 transitions. [2023-12-19 17:58:36,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2023-12-19 17:58:36,056 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:58:36,056 INFO L195 NwaCegarLoop]: trace histogram [55, 54, 54, 53, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:58:36,062 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2023-12-19 17:58:36,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2023-12-19 17:58:36,257 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:58:36,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:58:36,257 INFO L85 PathProgramCache]: Analyzing trace with hash -550127977, now seen corresponding path program 64 times [2023-12-19 17:58:36,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:58:36,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213409209] [2023-12-19 17:58:36,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:58:36,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:58:36,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:58:39,253 INFO L134 CoverageAnalysis]: Checked inductivity of 8588 backedges. 2862 proven. 5726 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:58:39,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:58:39,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213409209] [2023-12-19 17:58:39,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213409209] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:58:39,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89370661] [2023-12-19 17:58:39,254 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-19 17:58:39,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:58:39,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:58:39,255 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 17:58:39,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2023-12-19 17:58:39,485 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-19 17:58:39,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:58:39,493 INFO L262 TraceCheckSpWp]: Trace formula consists of 1221 conjuncts, 114 conjunts are in the unsatisfiable core [2023-12-19 17:58:39,497 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:58:39,719 INFO L134 CoverageAnalysis]: Checked inductivity of 8588 backedges. 2970 proven. 5618 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:58:39,719 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:58:41,585 INFO L134 CoverageAnalysis]: Checked inductivity of 8588 backedges. 2970 proven. 5618 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:58:41,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89370661] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:58:41,586 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:58:41,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57, 57] total 60 [2023-12-19 17:58:41,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233834150] [2023-12-19 17:58:41,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:58:41,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2023-12-19 17:58:41,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:58:41,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2023-12-19 17:58:41,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1662, Invalid=1998, Unknown=0, NotChecked=0, Total=3660 [2023-12-19 17:58:41,587 INFO L87 Difference]: Start difference. First operand 332 states and 335 transitions. Second operand has 61 states, 61 states have (on average 5.80327868852459) internal successors, (354), 60 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:58:42,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:58:42,311 INFO L93 Difference]: Finished difference Result 349 states and 353 transitions. [2023-12-19 17:58:42,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2023-12-19 17:58:42,311 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 5.80327868852459) internal successors, (354), 60 states have internal predecessors, (354), 0 states have call successors, (0), 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 331 [2023-12-19 17:58:42,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:58:42,312 INFO L225 Difference]: With dead ends: 349 [2023-12-19 17:58:42,312 INFO L226 Difference]: Without dead ends: 347 [2023-12-19 17:58:42,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 826 GetRequests, 604 SyntacticMatches, 107 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6629 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=5021, Invalid=8551, Unknown=0, NotChecked=0, Total=13572 [2023-12-19 17:58:42,315 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 119 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 17:58:42,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 494 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 541 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 17:58:42,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2023-12-19 17:58:42,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 340. [2023-12-19 17:58:42,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 339 states have (on average 1.0117994100294985) internal successors, (343), 339 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) [2023-12-19 17:58:42,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 343 transitions. [2023-12-19 17:58:42,335 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 343 transitions. Word has length 331 [2023-12-19 17:58:42,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:58:42,336 INFO L495 AbstractCegarLoop]: Abstraction has 340 states and 343 transitions. [2023-12-19 17:58:42,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 5.80327868852459) internal successors, (354), 60 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:58:42,336 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 343 transitions. [2023-12-19 17:58:42,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2023-12-19 17:58:42,337 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:58:42,337 INFO L195 NwaCegarLoop]: trace histogram [56, 55, 55, 55, 55, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:58:42,343 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2023-12-19 17:58:42,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:58:42,543 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:58:42,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:58:42,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1622572675, now seen corresponding path program 65 times [2023-12-19 17:58:42,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:58:42,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074794419] [2023-12-19 17:58:42,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:58:42,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:58:42,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:58:47,267 INFO L134 CoverageAnalysis]: Checked inductivity of 9020 backedges. 5888 proven. 3132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:58:47,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:58:47,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074794419] [2023-12-19 17:58:47,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074794419] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:58:47,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861869052] [2023-12-19 17:58:47,267 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-19 17:58:47,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:58:47,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:58:47,268 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 17:58:47,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2023-12-19 17:58:47,542 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 56 check-sat command(s) [2023-12-19 17:58:47,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:58:47,549 INFO L262 TraceCheckSpWp]: Trace formula consists of 1245 conjuncts, 113 conjunts are in the unsatisfiable core [2023-12-19 17:58:47,552 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:58:51,096 INFO L134 CoverageAnalysis]: Checked inductivity of 9020 backedges. 6050 proven. 2970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:58:51,096 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:58:53,281 INFO L134 CoverageAnalysis]: Checked inductivity of 9020 backedges. 6050 proven. 2970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:58:53,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1861869052] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:58:53,281 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:58:53,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [113, 113, 113] total 173 [2023-12-19 17:58:53,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529436418] [2023-12-19 17:58:53,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:58:53,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 173 states [2023-12-19 17:58:53,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:58:53,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 173 interpolants. [2023-12-19 17:58:53,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6730, Invalid=23026, Unknown=0, NotChecked=0, Total=29756 [2023-12-19 17:58:53,284 INFO L87 Difference]: Start difference. First operand 340 states and 343 transitions. Second operand has 173 states, 173 states have (on average 3.3294797687861273) internal successors, (576), 173 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:58:57,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:58:57,864 INFO L93 Difference]: Finished difference Result 1014 states and 1131 transitions. [2023-12-19 17:58:57,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2023-12-19 17:58:57,864 INFO L78 Accepts]: Start accepts. Automaton has has 173 states, 173 states have (on average 3.3294797687861273) internal successors, (576), 173 states have internal predecessors, (576), 0 states have call successors, (0), 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 339 [2023-12-19 17:58:57,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:58:57,866 INFO L225 Difference]: With dead ends: 1014 [2023-12-19 17:58:57,866 INFO L226 Difference]: Without dead ends: 568 [2023-12-19 17:58:57,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 900 GetRequests, 511 SyntacticMatches, 107 SemanticMatches, 282 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27040 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=19441, Invalid=60931, Unknown=0, NotChecked=0, Total=80372 [2023-12-19 17:58:57,869 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 1359 mSDsluCounter, 1733 mSDsCounter, 0 mSdLazyCounter, 2028 mSolverCounterSat, 367 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1359 SdHoareTripleChecker+Valid, 1846 SdHoareTripleChecker+Invalid, 2395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 367 IncrementalHoareTripleChecker+Valid, 2028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 17:58:57,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1359 Valid, 1846 Invalid, 2395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [367 Valid, 2028 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 17:58:57,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2023-12-19 17:58:57,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 344. [2023-12-19 17:58:57,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 343 states have (on average 1.0116618075801749) internal successors, (347), 343 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:58:57,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 347 transitions. [2023-12-19 17:58:57,889 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 347 transitions. Word has length 339 [2023-12-19 17:58:57,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:58:57,889 INFO L495 AbstractCegarLoop]: Abstraction has 344 states and 347 transitions. [2023-12-19 17:58:57,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 173 states, 173 states have (on average 3.3294797687861273) internal successors, (576), 173 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:58:57,889 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 347 transitions. [2023-12-19 17:58:57,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2023-12-19 17:58:57,890 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:58:57,890 INFO L195 NwaCegarLoop]: trace histogram [57, 56, 56, 55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:58:57,897 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2023-12-19 17:58:58,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2023-12-19 17:58:58,097 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:58:58,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:58:58,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1511043975, now seen corresponding path program 66 times [2023-12-19 17:58:58,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:58:58,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913904756] [2023-12-19 17:58:58,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:58:58,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:58:58,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:59:01,379 INFO L134 CoverageAnalysis]: Checked inductivity of 9242 backedges. 3080 proven. 6162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:59:01,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:59:01,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913904756] [2023-12-19 17:59:01,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913904756] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:59:01,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900675524] [2023-12-19 17:59:01,380 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-19 17:59:01,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:59:01,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:59:01,381 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 17:59:01,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2023-12-19 17:59:01,666 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 57 check-sat command(s) [2023-12-19 17:59:01,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:59:01,673 INFO L262 TraceCheckSpWp]: Trace formula consists of 1265 conjuncts, 118 conjunts are in the unsatisfiable core [2023-12-19 17:59:01,676 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:59:02,017 INFO L134 CoverageAnalysis]: Checked inductivity of 9242 backedges. 3192 proven. 6050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:59:02,017 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:59:04,174 INFO L134 CoverageAnalysis]: Checked inductivity of 9242 backedges. 3192 proven. 6050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:59:04,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [900675524] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:59:04,174 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:59:04,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59, 59] total 62 [2023-12-19 17:59:04,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632605903] [2023-12-19 17:59:04,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:59:04,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2023-12-19 17:59:04,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:59:04,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2023-12-19 17:59:04,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1779, Invalid=2127, Unknown=0, NotChecked=0, Total=3906 [2023-12-19 17:59:04,176 INFO L87 Difference]: Start difference. First operand 344 states and 347 transitions. Second operand has 63 states, 63 states have (on average 5.809523809523809) internal successors, (366), 62 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:59:05,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:59:05,205 INFO L93 Difference]: Finished difference Result 361 states and 365 transitions. [2023-12-19 17:59:05,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2023-12-19 17:59:05,205 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 5.809523809523809) internal successors, (366), 62 states have internal predecessors, (366), 0 states have call successors, (0), 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 343 [2023-12-19 17:59:05,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:59:05,206 INFO L225 Difference]: With dead ends: 361 [2023-12-19 17:59:05,206 INFO L226 Difference]: Without dead ends: 359 [2023-12-19 17:59:05,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 856 GetRequests, 626 SyntacticMatches, 111 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7099 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=5374, Invalid=9146, Unknown=0, NotChecked=0, Total=14520 [2023-12-19 17:59:05,208 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 72 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 17:59:05,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 564 Invalid, 619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 615 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 17:59:05,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2023-12-19 17:59:05,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 352. [2023-12-19 17:59:05,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 351 states have (on average 1.0113960113960114) internal successors, (355), 351 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) [2023-12-19 17:59:05,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 355 transitions. [2023-12-19 17:59:05,230 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 355 transitions. Word has length 343 [2023-12-19 17:59:05,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:59:05,231 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 355 transitions. [2023-12-19 17:59:05,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 5.809523809523809) internal successors, (366), 62 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:59:05,231 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 355 transitions. [2023-12-19 17:59:05,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2023-12-19 17:59:05,232 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:59:05,232 INFO L195 NwaCegarLoop]: trace histogram [58, 57, 57, 57, 57, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:59:05,241 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2023-12-19 17:59:05,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2023-12-19 17:59:05,439 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:59:05,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:59:05,439 INFO L85 PathProgramCache]: Analyzing trace with hash -40858003, now seen corresponding path program 67 times [2023-12-19 17:59:05,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:59:05,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091339365] [2023-12-19 17:59:05,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:59:05,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:59:05,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:59:10,641 INFO L134 CoverageAnalysis]: Checked inductivity of 9690 backedges. 6330 proven. 3360 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:59:10,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:59:10,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091339365] [2023-12-19 17:59:10,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091339365] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:59:10,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106778409] [2023-12-19 17:59:10,642 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-19 17:59:10,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:59:10,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:59:10,643 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 17:59:10,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2023-12-19 17:59:10,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:59:10,836 INFO L262 TraceCheckSpWp]: Trace formula consists of 1289 conjuncts, 116 conjunts are in the unsatisfiable core [2023-12-19 17:59:10,840 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:59:13,833 INFO L134 CoverageAnalysis]: Checked inductivity of 9690 backedges. 6496 proven. 3192 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 17:59:13,833 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:59:16,535 INFO L134 CoverageAnalysis]: Checked inductivity of 9690 backedges. 6496 proven. 3192 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 17:59:16,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106778409] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:59:16,535 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:59:16,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [117, 116, 116] total 176 [2023-12-19 17:59:16,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413928873] [2023-12-19 17:59:16,536 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:59:16,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 176 states [2023-12-19 17:59:16,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:59:16,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 176 interpolants. [2023-12-19 17:59:16,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6906, Invalid=23894, Unknown=0, NotChecked=0, Total=30800 [2023-12-19 17:59:16,539 INFO L87 Difference]: Start difference. First operand 352 states and 355 transitions. Second operand has 176 states, 176 states have (on average 3.335227272727273) internal successors, (587), 176 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:59:19,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:59:19,610 INFO L93 Difference]: Finished difference Result 815 states and 933 transitions. [2023-12-19 17:59:19,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2023-12-19 17:59:19,610 INFO L78 Accepts]: Start accepts. Automaton has has 176 states, 176 states have (on average 3.335227272727273) internal successors, (587), 176 states have internal predecessors, (587), 0 states have call successors, (0), 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 351 [2023-12-19 17:59:19,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:59:19,612 INFO L225 Difference]: With dead ends: 815 [2023-12-19 17:59:19,612 INFO L226 Difference]: Without dead ends: 582 [2023-12-19 17:59:19,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 874 GetRequests, 531 SyntacticMatches, 112 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20267 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=13520, Invalid=40536, Unknown=0, NotChecked=0, Total=54056 [2023-12-19 17:59:19,616 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 884 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 1707 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 1537 SdHoareTripleChecker+Invalid, 1942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 1707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 17:59:19,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [884 Valid, 1537 Invalid, 1942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 1707 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 17:59:19,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2023-12-19 17:59:19,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 354. [2023-12-19 17:59:19,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 353 states have (on average 1.0113314447592068) internal successors, (357), 353 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:59:19,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 357 transitions. [2023-12-19 17:59:19,637 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 357 transitions. Word has length 351 [2023-12-19 17:59:19,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:59:19,637 INFO L495 AbstractCegarLoop]: Abstraction has 354 states and 357 transitions. [2023-12-19 17:59:19,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 176 states, 176 states have (on average 3.335227272727273) internal successors, (587), 176 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:59:19,637 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 357 transitions. [2023-12-19 17:59:19,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2023-12-19 17:59:19,638 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:59:19,638 INFO L195 NwaCegarLoop]: trace histogram [58, 58, 57, 57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:59:19,644 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2023-12-19 17:59:19,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2023-12-19 17:59:19,840 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:59:19,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:59:19,841 INFO L85 PathProgramCache]: Analyzing trace with hash 980157074, now seen corresponding path program 68 times [2023-12-19 17:59:19,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:59:19,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129946522] [2023-12-19 17:59:19,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:59:19,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:59:19,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:59:24,484 INFO L134 CoverageAnalysis]: Checked inductivity of 9804 backedges. 6330 proven. 3474 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:59:24,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:59:24,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129946522] [2023-12-19 17:59:24,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129946522] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:59:24,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424600167] [2023-12-19 17:59:24,484 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-19 17:59:24,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:59:24,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:59:24,485 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 17:59:24,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2023-12-19 17:59:24,680 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-19 17:59:24,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:59:24,686 INFO L262 TraceCheckSpWp]: Trace formula consists of 1299 conjuncts, 118 conjunts are in the unsatisfiable core [2023-12-19 17:59:24,690 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:59:28,900 INFO L134 CoverageAnalysis]: Checked inductivity of 9804 backedges. 6498 proven. 3306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:59:28,900 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:59:31,615 INFO L134 CoverageAnalysis]: Checked inductivity of 9804 backedges. 6498 proven. 3306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:59:31,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [424600167] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:59:31,615 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:59:31,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [118, 118, 118] total 178 [2023-12-19 17:59:31,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717385269] [2023-12-19 17:59:31,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:59:31,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 178 states [2023-12-19 17:59:31,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:59:31,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 178 interpolants. [2023-12-19 17:59:31,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7083, Invalid=24423, Unknown=0, NotChecked=0, Total=31506 [2023-12-19 17:59:31,619 INFO L87 Difference]: Start difference. First operand 354 states and 357 transitions. Second operand has 178 states, 178 states have (on average 3.308988764044944) internal successors, (589), 178 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:59:34,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:59:34,104 INFO L93 Difference]: Finished difference Result 823 states and 943 transitions. [2023-12-19 17:59:34,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2023-12-19 17:59:34,104 INFO L78 Accepts]: Start accepts. Automaton has has 178 states, 178 states have (on average 3.308988764044944) internal successors, (589), 178 states have internal predecessors, (589), 0 states have call successors, (0), 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 353 [2023-12-19 17:59:34,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:59:34,106 INFO L225 Difference]: With dead ends: 823 [2023-12-19 17:59:34,106 INFO L226 Difference]: Without dead ends: 588 [2023-12-19 17:59:34,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 880 GetRequests, 532 SyntacticMatches, 114 SemanticMatches, 234 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20740 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=13929, Invalid=41531, Unknown=0, NotChecked=0, Total=55460 [2023-12-19 17:59:34,109 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 959 mSDsluCounter, 1234 mSDsCounter, 0 mSdLazyCounter, 1544 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 959 SdHoareTripleChecker+Valid, 1353 SdHoareTripleChecker+Invalid, 1799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 1544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 17:59:34,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [959 Valid, 1353 Invalid, 1799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [255 Valid, 1544 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 17:59:34,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2023-12-19 17:59:34,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 356. [2023-12-19 17:59:34,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 355 states have (on average 1.0112676056338028) internal successors, (359), 355 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:59:34,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 359 transitions. [2023-12-19 17:59:34,132 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 359 transitions. Word has length 353 [2023-12-19 17:59:34,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:59:34,132 INFO L495 AbstractCegarLoop]: Abstraction has 356 states and 359 transitions. [2023-12-19 17:59:34,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 178 states, 178 states have (on average 3.308988764044944) internal successors, (589), 178 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:59:34,132 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 359 transitions. [2023-12-19 17:59:34,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2023-12-19 17:59:34,133 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:59:34,133 INFO L195 NwaCegarLoop]: trace histogram [59, 58, 58, 57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:59:34,140 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2023-12-19 17:59:34,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable70 [2023-12-19 17:59:34,341 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:59:34,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:59:34,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1371864713, now seen corresponding path program 69 times [2023-12-19 17:59:34,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:59:34,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471041893] [2023-12-19 17:59:34,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:59:34,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:59:34,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:59:37,770 INFO L134 CoverageAnalysis]: Checked inductivity of 9920 backedges. 3306 proven. 6614 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:59:37,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:59:37,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471041893] [2023-12-19 17:59:37,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471041893] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:59:37,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209729524] [2023-12-19 17:59:37,770 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-19 17:59:37,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:59:37,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:59:37,771 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 17:59:37,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2023-12-19 17:59:38,118 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 59 check-sat command(s) [2023-12-19 17:59:38,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:59:38,127 INFO L262 TraceCheckSpWp]: Trace formula consists of 1309 conjuncts, 122 conjunts are in the unsatisfiable core [2023-12-19 17:59:38,130 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:59:38,474 INFO L134 CoverageAnalysis]: Checked inductivity of 9920 backedges. 3422 proven. 6498 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:59:38,474 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:59:40,701 INFO L134 CoverageAnalysis]: Checked inductivity of 9920 backedges. 3422 proven. 6498 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:59:40,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1209729524] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:59:40,701 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:59:40,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61, 61] total 64 [2023-12-19 17:59:40,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502024996] [2023-12-19 17:59:40,701 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:59:40,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2023-12-19 17:59:40,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:59:40,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2023-12-19 17:59:40,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1900, Invalid=2260, Unknown=0, NotChecked=0, Total=4160 [2023-12-19 17:59:40,703 INFO L87 Difference]: Start difference. First operand 356 states and 359 transitions. Second operand has 65 states, 65 states have (on average 5.815384615384615) internal successors, (378), 64 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:59:41,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:59:41,558 INFO L93 Difference]: Finished difference Result 373 states and 377 transitions. [2023-12-19 17:59:41,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2023-12-19 17:59:41,558 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 5.815384615384615) internal successors, (378), 64 states have internal predecessors, (378), 0 states have call successors, (0), 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 [2023-12-19 17:59:41,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:59:41,559 INFO L225 Difference]: With dead ends: 373 [2023-12-19 17:59:41,559 INFO L226 Difference]: Without dead ends: 371 [2023-12-19 17:59:41,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 886 GetRequests, 648 SyntacticMatches, 115 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7585 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=5739, Invalid=9761, Unknown=0, NotChecked=0, Total=15500 [2023-12-19 17:59:41,561 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 133 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 601 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 17:59:41,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 538 Invalid, 605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 601 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 17:59:41,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2023-12-19 17:59:41,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 364. [2023-12-19 17:59:41,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 363 states have (on average 1.0110192837465564) internal successors, (367), 363 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:59:41,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 367 transitions. [2023-12-19 17:59:41,582 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 367 transitions. Word has length 355 [2023-12-19 17:59:41,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:59:41,582 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 367 transitions. [2023-12-19 17:59:41,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 5.815384615384615) internal successors, (378), 64 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:59:41,583 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 367 transitions. [2023-12-19 17:59:41,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2023-12-19 17:59:41,584 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:59:41,584 INFO L195 NwaCegarLoop]: trace histogram [60, 59, 59, 59, 59, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:59:41,591 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2023-12-19 17:59:41,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:59:41,791 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:59:41,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:59:41,791 INFO L85 PathProgramCache]: Analyzing trace with hash 491121757, now seen corresponding path program 70 times [2023-12-19 17:59:41,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:59:41,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831891800] [2023-12-19 17:59:41,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:59:41,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:59:41,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:59:48,882 INFO L134 CoverageAnalysis]: Checked inductivity of 10384 backedges. 6788 proven. 3596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:59:48,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:59:48,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831891800] [2023-12-19 17:59:48,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831891800] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:59:48,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885273368] [2023-12-19 17:59:48,883 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-19 17:59:48,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:59:48,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:59:48,884 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 17:59:48,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2023-12-19 17:59:49,077 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-19 17:59:49,078 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:59:49,085 INFO L262 TraceCheckSpWp]: Trace formula consists of 1333 conjuncts, 121 conjunts are in the unsatisfiable core [2023-12-19 17:59:49,088 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:59:54,345 INFO L134 CoverageAnalysis]: Checked inductivity of 10384 backedges. 6962 proven. 3422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:59:54,345 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:59:58,349 INFO L134 CoverageAnalysis]: Checked inductivity of 10384 backedges. 6962 proven. 3422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:59:58,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [885273368] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:59:58,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:59:58,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [121, 121, 121] total 185 [2023-12-19 17:59:58,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187540233] [2023-12-19 17:59:58,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:59:58,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 185 states [2023-12-19 17:59:58,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:59:58,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 185 interpolants. [2023-12-19 17:59:58,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7690, Invalid=26350, Unknown=0, NotChecked=0, Total=34040 [2023-12-19 17:59:58,353 INFO L87 Difference]: Start difference. First operand 364 states and 367 transitions. Second operand has 185 states, 185 states have (on average 3.32972972972973) internal successors, (616), 185 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:00:04,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:00:04,155 INFO L93 Difference]: Finished difference Result 1086 states and 1211 transitions. [2023-12-19 18:00:04,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 181 states. [2023-12-19 18:00:04,155 INFO L78 Accepts]: Start accepts. Automaton has has 185 states, 185 states have (on average 3.32972972972973) internal successors, (616), 185 states have internal predecessors, (616), 0 states have call successors, (0), 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 363 [2023-12-19 18:00:04,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:00:04,157 INFO L225 Difference]: With dead ends: 1086 [2023-12-19 18:00:04,157 INFO L226 Difference]: Without dead ends: 608 [2023-12-19 18:00:04,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 964 GetRequests, 547 SyntacticMatches, 115 SemanticMatches, 302 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31014 ImplicationChecksByTransitivity, 15.6s TimeCoverageRelationStatistics Valid=22269, Invalid=69843, Unknown=0, NotChecked=0, Total=92112 [2023-12-19 18:00:04,162 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 1238 mSDsluCounter, 1940 mSDsCounter, 0 mSdLazyCounter, 2258 mSolverCounterSat, 339 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1238 SdHoareTripleChecker+Valid, 2061 SdHoareTripleChecker+Invalid, 2597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 339 IncrementalHoareTripleChecker+Valid, 2258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-19 18:00:04,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1238 Valid, 2061 Invalid, 2597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [339 Valid, 2258 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-19 18:00:04,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2023-12-19 18:00:04,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 368. [2023-12-19 18:00:04,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 367 states have (on average 1.0108991825613078) internal successors, (371), 367 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:00:04,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 371 transitions. [2023-12-19 18:00:04,187 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 371 transitions. Word has length 363 [2023-12-19 18:00:04,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:00:04,187 INFO L495 AbstractCegarLoop]: Abstraction has 368 states and 371 transitions. [2023-12-19 18:00:04,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 185 states, 185 states have (on average 3.32972972972973) internal successors, (616), 185 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:00:04,188 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 371 transitions. [2023-12-19 18:00:04,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2023-12-19 18:00:04,189 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:00:04,189 INFO L195 NwaCegarLoop]: trace histogram [61, 60, 60, 59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 18:00:04,196 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2023-12-19 18:00:04,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:00:04,396 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:00:04,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:00:04,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1274683495, now seen corresponding path program 71 times [2023-12-19 18:00:04,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:00:04,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106601563] [2023-12-19 18:00:04,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:00:04,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:00:04,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:00:08,108 INFO L134 CoverageAnalysis]: Checked inductivity of 10622 backedges. 3540 proven. 7082 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:00:08,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:00:08,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106601563] [2023-12-19 18:00:08,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106601563] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 18:00:08,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812331712] [2023-12-19 18:00:08,108 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-19 18:00:08,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:00:08,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:00:08,110 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 18:00:08,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2023-12-19 18:00:08,440 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 61 check-sat command(s) [2023-12-19 18:00:08,440 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 18:00:08,448 INFO L262 TraceCheckSpWp]: Trace formula consists of 1353 conjuncts, 126 conjunts are in the unsatisfiable core [2023-12-19 18:00:08,452 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:00:08,787 INFO L134 CoverageAnalysis]: Checked inductivity of 10622 backedges. 3660 proven. 6962 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:00:08,787 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 18:00:10,646 INFO L134 CoverageAnalysis]: Checked inductivity of 10622 backedges. 3660 proven. 6962 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:00:10,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1812331712] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 18:00:10,647 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 18:00:10,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63, 63] total 66 [2023-12-19 18:00:10,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125016446] [2023-12-19 18:00:10,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 18:00:10,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2023-12-19 18:00:10,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:00:10,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2023-12-19 18:00:10,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2025, Invalid=2397, Unknown=0, NotChecked=0, Total=4422 [2023-12-19 18:00:10,649 INFO L87 Difference]: Start difference. First operand 368 states and 371 transitions. Second operand has 67 states, 67 states have (on average 5.82089552238806) internal successors, (390), 66 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:00:11,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:00:11,842 INFO L93 Difference]: Finished difference Result 385 states and 389 transitions. [2023-12-19 18:00:11,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2023-12-19 18:00:11,842 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 5.82089552238806) internal successors, (390), 66 states have internal predecessors, (390), 0 states have call successors, (0), 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 367 [2023-12-19 18:00:11,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:00:11,843 INFO L225 Difference]: With dead ends: 385 [2023-12-19 18:00:11,844 INFO L226 Difference]: Without dead ends: 383 [2023-12-19 18:00:11,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 916 GetRequests, 670 SyntacticMatches, 119 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8087 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=6116, Invalid=10396, Unknown=0, NotChecked=0, Total=16512 [2023-12-19 18:00:11,845 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 133 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 631 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 18:00:11,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 592 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 631 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 18:00:11,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2023-12-19 18:00:11,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 376. [2023-12-19 18:00:11,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 375 states have (on average 1.0106666666666666) internal successors, (379), 375 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) [2023-12-19 18:00:11,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 379 transitions. [2023-12-19 18:00:11,868 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 379 transitions. Word has length 367 [2023-12-19 18:00:11,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:00:11,868 INFO L495 AbstractCegarLoop]: Abstraction has 376 states and 379 transitions. [2023-12-19 18:00:11,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 5.82089552238806) internal successors, (390), 66 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:00:11,869 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 379 transitions. [2023-12-19 18:00:11,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2023-12-19 18:00:11,870 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:00:11,870 INFO L195 NwaCegarLoop]: trace histogram [62, 61, 61, 61, 61, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 18:00:11,877 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2023-12-19 18:00:12,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:00:12,077 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:00:12,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:00:12,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1859183795, now seen corresponding path program 72 times [2023-12-19 18:00:12,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:00:12,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835085743] [2023-12-19 18:00:12,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:00:12,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:00:12,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:00:18,086 INFO L134 CoverageAnalysis]: Checked inductivity of 11102 backedges. 7262 proven. 3840 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:00:18,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:00:18,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835085743] [2023-12-19 18:00:18,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835085743] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 18:00:18,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122583624] [2023-12-19 18:00:18,087 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-19 18:00:18,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:00:18,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:00:18,088 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 18:00:18,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2023-12-19 18:00:18,411 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 62 check-sat command(s) [2023-12-19 18:00:18,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 18:00:18,419 INFO L262 TraceCheckSpWp]: Trace formula consists of 1377 conjuncts, 125 conjunts are in the unsatisfiable core [2023-12-19 18:00:18,422 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:00:21,839 INFO L134 CoverageAnalysis]: Checked inductivity of 11102 backedges. 7442 proven. 3660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:00:21,839 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 18:00:24,768 INFO L134 CoverageAnalysis]: Checked inductivity of 11102 backedges. 7442 proven. 3660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:00:24,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2122583624] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 18:00:24,769 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 18:00:24,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [125, 125, 125] total 191 [2023-12-19 18:00:24,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400012724] [2023-12-19 18:00:24,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 18:00:24,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 191 states [2023-12-19 18:00:24,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:00:24,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 191 interpolants. [2023-12-19 18:00:24,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8194, Invalid=28096, Unknown=0, NotChecked=0, Total=36290 [2023-12-19 18:00:24,772 INFO L87 Difference]: Start difference. First operand 376 states and 379 transitions. Second operand has 191 states, 191 states have (on average 3.329842931937173) internal successors, (636), 191 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:00:29,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:00:29,483 INFO L93 Difference]: Finished difference Result 1122 states and 1251 transitions. [2023-12-19 18:00:29,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 187 states. [2023-12-19 18:00:29,483 INFO L78 Accepts]: Start accepts. Automaton has has 191 states, 191 states have (on average 3.329842931937173) internal successors, (636), 191 states have internal predecessors, (636), 0 states have call successors, (0), 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 375 [2023-12-19 18:00:29,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:00:29,485 INFO L225 Difference]: With dead ends: 1122 [2023-12-19 18:00:29,485 INFO L226 Difference]: Without dead ends: 628 [2023-12-19 18:00:29,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 996 GetRequests, 565 SyntacticMatches, 119 SemanticMatches, 312 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33103 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=23755, Invalid=74527, Unknown=0, NotChecked=0, Total=98282 [2023-12-19 18:00:29,491 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 1388 mSDsluCounter, 1767 mSDsCounter, 0 mSdLazyCounter, 2095 mSolverCounterSat, 378 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1388 SdHoareTripleChecker+Valid, 1892 SdHoareTripleChecker+Invalid, 2473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 378 IncrementalHoareTripleChecker+Valid, 2095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 18:00:29,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1388 Valid, 1892 Invalid, 2473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [378 Valid, 2095 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 18:00:29,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2023-12-19 18:00:29,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 380. [2023-12-19 18:00:29,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 1.0105540897097625) internal successors, (383), 379 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:00:29,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 383 transitions. [2023-12-19 18:00:29,540 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 383 transitions. Word has length 375 [2023-12-19 18:00:29,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:00:29,541 INFO L495 AbstractCegarLoop]: Abstraction has 380 states and 383 transitions. [2023-12-19 18:00:29,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 191 states, 191 states have (on average 3.329842931937173) internal successors, (636), 191 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:00:29,541 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 383 transitions. [2023-12-19 18:00:29,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2023-12-19 18:00:29,542 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:00:29,542 INFO L195 NwaCegarLoop]: trace histogram [63, 62, 62, 61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 18:00:29,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2023-12-19 18:00:29,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable74 [2023-12-19 18:00:29,744 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:00:29,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:00:29,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1079218263, now seen corresponding path program 73 times [2023-12-19 18:00:29,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:00:29,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545281395] [2023-12-19 18:00:29,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:00:29,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:00:29,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:00:33,567 INFO L134 CoverageAnalysis]: Checked inductivity of 11348 backedges. 3782 proven. 7566 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:00:33,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:00:33,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545281395] [2023-12-19 18:00:33,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545281395] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 18:00:33,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130855688] [2023-12-19 18:00:33,568 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-19 18:00:33,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:00:33,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:00:33,570 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 18:00:33,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2023-12-19 18:00:33,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:00:33,799 INFO L262 TraceCheckSpWp]: Trace formula consists of 1397 conjuncts, 130 conjunts are in the unsatisfiable core [2023-12-19 18:00:33,803 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:00:34,176 INFO L134 CoverageAnalysis]: Checked inductivity of 11348 backedges. 3906 proven. 7442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:00:34,176 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 18:00:36,273 INFO L134 CoverageAnalysis]: Checked inductivity of 11348 backedges. 3906 proven. 7442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:00:36,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2130855688] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 18:00:36,273 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 18:00:36,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65, 65] total 68 [2023-12-19 18:00:36,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739605273] [2023-12-19 18:00:36,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 18:00:36,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2023-12-19 18:00:36,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:00:36,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2023-12-19 18:00:36,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2154, Invalid=2538, Unknown=0, NotChecked=0, Total=4692 [2023-12-19 18:00:36,275 INFO L87 Difference]: Start difference. First operand 380 states and 383 transitions. Second operand has 69 states, 69 states have (on average 5.826086956521739) internal successors, (402), 68 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:00:37,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:00:37,356 INFO L93 Difference]: Finished difference Result 397 states and 401 transitions. [2023-12-19 18:00:37,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2023-12-19 18:00:37,356 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 5.826086956521739) internal successors, (402), 68 states have internal predecessors, (402), 0 states have call successors, (0), 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 379 [2023-12-19 18:00:37,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:00:37,357 INFO L225 Difference]: With dead ends: 397 [2023-12-19 18:00:37,357 INFO L226 Difference]: Without dead ends: 395 [2023-12-19 18:00:37,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 946 GetRequests, 692 SyntacticMatches, 123 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8605 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=6505, Invalid=11051, Unknown=0, NotChecked=0, Total=17556 [2023-12-19 18:00:37,360 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 135 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 18:00:37,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 545 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 18:00:37,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2023-12-19 18:00:37,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 388. [2023-12-19 18:00:37,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 1.0103359173126616) internal successors, (391), 387 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:00:37,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 391 transitions. [2023-12-19 18:00:37,386 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 391 transitions. Word has length 379 [2023-12-19 18:00:37,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:00:37,386 INFO L495 AbstractCegarLoop]: Abstraction has 388 states and 391 transitions. [2023-12-19 18:00:37,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 5.826086956521739) internal successors, (402), 68 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:00:37,386 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 391 transitions. [2023-12-19 18:00:37,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2023-12-19 18:00:37,387 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:00:37,387 INFO L195 NwaCegarLoop]: trace histogram [64, 63, 63, 63, 63, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 18:00:37,396 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2023-12-19 18:00:37,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:00:37,589 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:00:37,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:00:37,589 INFO L85 PathProgramCache]: Analyzing trace with hash -925787331, now seen corresponding path program 74 times [2023-12-19 18:00:37,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:00:37,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405729569] [2023-12-19 18:00:37,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:00:37,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:00:37,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:00:44,152 INFO L134 CoverageAnalysis]: Checked inductivity of 11844 backedges. 7752 proven. 4092 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:00:44,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:00:44,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405729569] [2023-12-19 18:00:44,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405729569] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 18:00:44,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379858820] [2023-12-19 18:00:44,153 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-19 18:00:44,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:00:44,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:00:44,154 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 18:00:44,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2023-12-19 18:00:44,363 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-19 18:00:44,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 18:00:44,369 INFO L262 TraceCheckSpWp]: Trace formula consists of 1421 conjuncts, 128 conjunts are in the unsatisfiable core [2023-12-19 18:00:44,373 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:00:49,270 INFO L134 CoverageAnalysis]: Checked inductivity of 11844 backedges. 7936 proven. 3906 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 18:00:49,270 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 18:00:52,481 INFO L134 CoverageAnalysis]: Checked inductivity of 11844 backedges. 7936 proven. 3906 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 18:00:52,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379858820] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 18:00:52,481 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 18:00:52,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [129, 128, 128] total 194 [2023-12-19 18:00:52,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832007495] [2023-12-19 18:00:52,481 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 18:00:52,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 194 states [2023-12-19 18:00:52,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:00:52,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 194 interpolants. [2023-12-19 18:00:52,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8388, Invalid=29054, Unknown=0, NotChecked=0, Total=37442 [2023-12-19 18:00:52,486 INFO L87 Difference]: Start difference. First operand 388 states and 391 transitions. Second operand has 194 states, 194 states have (on average 3.3350515463917527) internal successors, (647), 194 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:00:56,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:00:56,670 INFO L93 Difference]: Finished difference Result 899 states and 1029 transitions. [2023-12-19 18:00:56,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2023-12-19 18:00:56,670 INFO L78 Accepts]: Start accepts. Automaton has has 194 states, 194 states have (on average 3.3350515463917527) internal successors, (647), 194 states have internal predecessors, (647), 0 states have call successors, (0), 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 387 [2023-12-19 18:00:56,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:00:56,671 INFO L225 Difference]: With dead ends: 899 [2023-12-19 18:00:56,672 INFO L226 Difference]: Without dead ends: 642 [2023-12-19 18:00:56,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 964 GetRequests, 585 SyntacticMatches, 124 SemanticMatches, 255 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24671 ImplicationChecksByTransitivity, 12.7s TimeCoverageRelationStatistics Valid=16454, Invalid=49338, Unknown=0, NotChecked=0, Total=65792 [2023-12-19 18:00:56,674 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 1121 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 1821 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1121 SdHoareTripleChecker+Valid, 1625 SdHoareTripleChecker+Invalid, 2119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 1821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 18:00:56,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1121 Valid, 1625 Invalid, 2119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 1821 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 18:00:56,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2023-12-19 18:00:56,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 390. [2023-12-19 18:00:56,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 1.0102827763496145) internal successors, (393), 389 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:00:56,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 393 transitions. [2023-12-19 18:00:56,701 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 393 transitions. Word has length 387 [2023-12-19 18:00:56,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:00:56,701 INFO L495 AbstractCegarLoop]: Abstraction has 390 states and 393 transitions. [2023-12-19 18:00:56,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 194 states, 194 states have (on average 3.3350515463917527) internal successors, (647), 194 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:00:56,701 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 393 transitions. [2023-12-19 18:00:56,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2023-12-19 18:00:56,702 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:00:56,702 INFO L195 NwaCegarLoop]: trace histogram [64, 64, 63, 63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 18:00:56,709 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2023-12-19 18:00:56,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:00:56,909 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:00:56,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:00:56,909 INFO L85 PathProgramCache]: Analyzing trace with hash -683368222, now seen corresponding path program 75 times [2023-12-19 18:00:56,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:00:56,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747754340] [2023-12-19 18:00:56,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:00:56,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:00:57,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:01:02,894 INFO L134 CoverageAnalysis]: Checked inductivity of 11970 backedges. 7752 proven. 4218 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:01:02,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:01:02,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747754340] [2023-12-19 18:01:02,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747754340] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 18:01:02,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990140051] [2023-12-19 18:01:02,895 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-19 18:01:02,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:01:02,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:01:02,896 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 18:01:02,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2023-12-19 18:01:03,242 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 64 check-sat command(s) [2023-12-19 18:01:03,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 18:01:03,248 INFO L262 TraceCheckSpWp]: Trace formula consists of 1431 conjuncts, 130 conjunts are in the unsatisfiable core [2023-12-19 18:01:03,252 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:01:07,281 INFO L134 CoverageAnalysis]: Checked inductivity of 11970 backedges. 7938 proven. 4032 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:01:07,281 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 18:01:10,504 INFO L134 CoverageAnalysis]: Checked inductivity of 11970 backedges. 7938 proven. 4032 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:01:10,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990140051] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 18:01:10,504 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 18:01:10,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [130, 130, 130] total 196 [2023-12-19 18:01:10,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840126786] [2023-12-19 18:01:10,504 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 18:01:10,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 196 states [2023-12-19 18:01:10,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:01:10,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 196 interpolants. [2023-12-19 18:01:10,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8583, Invalid=29637, Unknown=0, NotChecked=0, Total=38220 [2023-12-19 18:01:10,508 INFO L87 Difference]: Start difference. First operand 390 states and 393 transitions. Second operand has 196 states, 196 states have (on average 3.311224489795918) internal successors, (649), 196 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:01:14,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:01:14,349 INFO L93 Difference]: Finished difference Result 907 states and 1039 transitions. [2023-12-19 18:01:14,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2023-12-19 18:01:14,350 INFO L78 Accepts]: Start accepts. Automaton has has 196 states, 196 states have (on average 3.311224489795918) internal successors, (649), 196 states have internal predecessors, (649), 0 states have call successors, (0), 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 389 [2023-12-19 18:01:14,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:01:14,351 INFO L225 Difference]: With dead ends: 907 [2023-12-19 18:01:14,351 INFO L226 Difference]: Without dead ends: 648 [2023-12-19 18:01:14,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 970 GetRequests, 586 SyntacticMatches, 126 SemanticMatches, 258 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25192 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=16905, Invalid=50435, Unknown=0, NotChecked=0, Total=67340 [2023-12-19 18:01:14,355 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 1137 mSDsluCounter, 1497 mSDsCounter, 0 mSdLazyCounter, 1829 mSolverCounterSat, 301 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1137 SdHoareTripleChecker+Valid, 1628 SdHoareTripleChecker+Invalid, 2130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 301 IncrementalHoareTripleChecker+Valid, 1829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 18:01:14,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1137 Valid, 1628 Invalid, 2130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [301 Valid, 1829 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 18:01:14,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2023-12-19 18:01:14,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 392. [2023-12-19 18:01:14,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 1.010230179028133) internal successors, (395), 391 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:01:14,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 395 transitions. [2023-12-19 18:01:14,383 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 395 transitions. Word has length 389 [2023-12-19 18:01:14,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:01:14,383 INFO L495 AbstractCegarLoop]: Abstraction has 392 states and 395 transitions. [2023-12-19 18:01:14,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 196 states, 196 states have (on average 3.311224489795918) internal successors, (649), 196 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:01:14,384 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 395 transitions. [2023-12-19 18:01:14,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2023-12-19 18:01:14,385 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:01:14,385 INFO L195 NwaCegarLoop]: trace histogram [65, 64, 64, 63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 18:01:14,392 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2023-12-19 18:01:14,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2023-12-19 18:01:14,592 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:01:14,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:01:14,593 INFO L85 PathProgramCache]: Analyzing trace with hash 353161543, now seen corresponding path program 76 times [2023-12-19 18:01:14,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:01:14,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152462159] [2023-12-19 18:01:14,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:01:14,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:01:14,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:01:18,861 INFO L134 CoverageAnalysis]: Checked inductivity of 12098 backedges. 4032 proven. 8066 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:01:18,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:01:18,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152462159] [2023-12-19 18:01:18,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152462159] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 18:01:18,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609990004] [2023-12-19 18:01:18,861 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-19 18:01:18,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:01:18,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:01:18,862 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 18:01:18,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2023-12-19 18:01:19,089 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-19 18:01:19,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 18:01:19,097 INFO L262 TraceCheckSpWp]: Trace formula consists of 1441 conjuncts, 134 conjunts are in the unsatisfiable core [2023-12-19 18:01:19,113 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:01:19,436 INFO L134 CoverageAnalysis]: Checked inductivity of 12098 backedges. 4160 proven. 7938 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:01:19,436 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 18:01:21,499 INFO L134 CoverageAnalysis]: Checked inductivity of 12098 backedges. 4160 proven. 7938 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:01:21,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1609990004] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 18:01:21,499 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 18:01:21,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67, 67] total 70 [2023-12-19 18:01:21,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867921902] [2023-12-19 18:01:21,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 18:01:21,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2023-12-19 18:01:21,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:01:21,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2023-12-19 18:01:21,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2287, Invalid=2683, Unknown=0, NotChecked=0, Total=4970 [2023-12-19 18:01:21,501 INFO L87 Difference]: Start difference. First operand 392 states and 395 transitions. Second operand has 71 states, 71 states have (on average 5.830985915492958) internal successors, (414), 70 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:01:22,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:01:22,627 INFO L93 Difference]: Finished difference Result 409 states and 413 transitions. [2023-12-19 18:01:22,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2023-12-19 18:01:22,627 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 5.830985915492958) internal successors, (414), 70 states have internal predecessors, (414), 0 states have call successors, (0), 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 391 [2023-12-19 18:01:22,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:01:22,628 INFO L225 Difference]: With dead ends: 409 [2023-12-19 18:01:22,628 INFO L226 Difference]: Without dead ends: 407 [2023-12-19 18:01:22,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 976 GetRequests, 714 SyntacticMatches, 127 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9139 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=6906, Invalid=11726, Unknown=0, NotChecked=0, Total=18632 [2023-12-19 18:01:22,629 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 76 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 18:01:22,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 614 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 18:01:22,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2023-12-19 18:01:22,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 400. [2023-12-19 18:01:22,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 399 states have (on average 1.0100250626566416) internal successors, (403), 399 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:01:22,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 403 transitions. [2023-12-19 18:01:22,656 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 403 transitions. Word has length 391 [2023-12-19 18:01:22,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:01:22,656 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 403 transitions. [2023-12-19 18:01:22,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 5.830985915492958) internal successors, (414), 70 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:01:22,656 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 403 transitions. [2023-12-19 18:01:22,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2023-12-19 18:01:22,657 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:01:22,658 INFO L195 NwaCegarLoop]: trace histogram [66, 65, 65, 65, 65, 64, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 18:01:22,666 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2023-12-19 18:01:22,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2023-12-19 18:01:22,864 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:01:22,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:01:22,864 INFO L85 PathProgramCache]: Analyzing trace with hash -260903891, now seen corresponding path program 77 times [2023-12-19 18:01:22,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:01:22,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001530165] [2023-12-19 18:01:22,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:01:22,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:01:22,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:01:28,976 INFO L134 CoverageAnalysis]: Checked inductivity of 12610 backedges. 8258 proven. 4352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:01:28,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:01:28,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001530165] [2023-12-19 18:01:28,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001530165] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 18:01:28,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135673706] [2023-12-19 18:01:28,977 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-19 18:01:28,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:01:28,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:01:28,978 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 18:01:28,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2023-12-19 18:01:29,326 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 66 check-sat command(s) [2023-12-19 18:01:29,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 18:01:29,335 INFO L262 TraceCheckSpWp]: Trace formula consists of 1465 conjuncts, 133 conjunts are in the unsatisfiable core [2023-12-19 18:01:29,339 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:01:34,076 INFO L134 CoverageAnalysis]: Checked inductivity of 12610 backedges. 8450 proven. 4160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:01:34,076 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 18:01:38,064 INFO L134 CoverageAnalysis]: Checked inductivity of 12610 backedges. 8450 proven. 4160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:01:38,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135673706] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 18:01:38,065 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 18:01:38,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [133, 133, 133] total 203 [2023-12-19 18:01:38,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600469492] [2023-12-19 18:01:38,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 18:01:38,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 203 states [2023-12-19 18:01:38,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:01:38,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 203 interpolants. [2023-12-19 18:01:38,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9250, Invalid=31756, Unknown=0, NotChecked=0, Total=41006 [2023-12-19 18:01:38,076 INFO L87 Difference]: Start difference. First operand 400 states and 403 transitions. Second operand has 203 states, 203 states have (on average 3.3300492610837438) internal successors, (676), 203 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:01:43,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:01:43,647 INFO L93 Difference]: Finished difference Result 1194 states and 1331 transitions. [2023-12-19 18:01:43,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 199 states. [2023-12-19 18:01:43,647 INFO L78 Accepts]: Start accepts. Automaton has has 203 states, 203 states have (on average 3.3300492610837438) internal successors, (676), 203 states have internal predecessors, (676), 0 states have call successors, (0), 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 399 [2023-12-19 18:01:43,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:01:43,649 INFO L225 Difference]: With dead ends: 1194 [2023-12-19 18:01:43,649 INFO L226 Difference]: Without dead ends: 668 [2023-12-19 18:01:43,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1060 GetRequests, 601 SyntacticMatches, 127 SemanticMatches, 332 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37485 ImplicationChecksByTransitivity, 13.6s TimeCoverageRelationStatistics Valid=26871, Invalid=84351, Unknown=0, NotChecked=0, Total=111222 [2023-12-19 18:01:43,653 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 1446 mSDsluCounter, 2186 mSDsCounter, 0 mSdLazyCounter, 2528 mSolverCounterSat, 395 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1446 SdHoareTripleChecker+Valid, 2319 SdHoareTripleChecker+Invalid, 2923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 395 IncrementalHoareTripleChecker+Valid, 2528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 18:01:43,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1446 Valid, 2319 Invalid, 2923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [395 Valid, 2528 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 18:01:43,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2023-12-19 18:01:43,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 404. [2023-12-19 18:01:43,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 403 states have (on average 1.0099255583126552) internal successors, (407), 403 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:01:43,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 407 transitions. [2023-12-19 18:01:43,683 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 407 transitions. Word has length 399 [2023-12-19 18:01:43,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:01:43,683 INFO L495 AbstractCegarLoop]: Abstraction has 404 states and 407 transitions. [2023-12-19 18:01:43,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 203 states, 203 states have (on average 3.3300492610837438) internal successors, (676), 203 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:01:43,683 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 407 transitions. [2023-12-19 18:01:43,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2023-12-19 18:01:43,684 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:01:43,684 INFO L195 NwaCegarLoop]: trace histogram [67, 66, 66, 65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 18:01:43,694 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2023-12-19 18:01:43,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:01:43,891 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:01:43,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:01:43,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1330945225, now seen corresponding path program 78 times [2023-12-19 18:01:43,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:01:43,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103156824] [2023-12-19 18:01:43,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:01:43,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:01:44,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:01:47,912 INFO L134 CoverageAnalysis]: Checked inductivity of 12872 backedges. 4290 proven. 8582 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:01:47,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:01:47,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103156824] [2023-12-19 18:01:47,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103156824] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 18:01:47,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903600522] [2023-12-19 18:01:47,913 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-19 18:01:47,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:01:47,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:01:47,914 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 18:01:47,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2023-12-19 18:01:48,267 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 67 check-sat command(s) [2023-12-19 18:01:48,268 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 18:01:48,275 INFO L262 TraceCheckSpWp]: Trace formula consists of 1485 conjuncts, 138 conjunts are in the unsatisfiable core [2023-12-19 18:01:48,279 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:01:48,503 INFO L134 CoverageAnalysis]: Checked inductivity of 12872 backedges. 4422 proven. 8450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:01:48,503 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 18:01:51,114 INFO L134 CoverageAnalysis]: Checked inductivity of 12872 backedges. 4422 proven. 8450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:01:51,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903600522] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 18:01:51,114 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 18:01:51,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69, 69] total 72 [2023-12-19 18:01:51,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185519056] [2023-12-19 18:01:51,115 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 18:01:51,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2023-12-19 18:01:51,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:01:51,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2023-12-19 18:01:51,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2424, Invalid=2832, Unknown=0, NotChecked=0, Total=5256 [2023-12-19 18:01:51,116 INFO L87 Difference]: Start difference. First operand 404 states and 407 transitions. Second operand has 73 states, 73 states have (on average 5.835616438356165) internal successors, (426), 72 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:01:52,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:01:52,263 INFO L93 Difference]: Finished difference Result 421 states and 425 transitions. [2023-12-19 18:01:52,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2023-12-19 18:01:52,264 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 5.835616438356165) internal successors, (426), 72 states have internal predecessors, (426), 0 states have call successors, (0), 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 403 [2023-12-19 18:01:52,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:01:52,265 INFO L225 Difference]: With dead ends: 421 [2023-12-19 18:01:52,265 INFO L226 Difference]: Without dead ends: 419 [2023-12-19 18:01:52,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1006 GetRequests, 736 SyntacticMatches, 131 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9689 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=7319, Invalid=12421, Unknown=0, NotChecked=0, Total=19740 [2023-12-19 18:01:52,267 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 82 mSDsluCounter, 613 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 691 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 18:01:52,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 691 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 770 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 18:01:52,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2023-12-19 18:01:52,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 412. [2023-12-19 18:01:52,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 411 states have (on average 1.0097323600973236) internal successors, (415), 411 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:01:52,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 415 transitions. [2023-12-19 18:01:52,295 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 415 transitions. Word has length 403 [2023-12-19 18:01:52,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:01:52,295 INFO L495 AbstractCegarLoop]: Abstraction has 412 states and 415 transitions. [2023-12-19 18:01:52,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 5.835616438356165) internal successors, (426), 72 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:01:52,295 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 415 transitions. [2023-12-19 18:01:52,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2023-12-19 18:01:52,296 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:01:52,296 INFO L195 NwaCegarLoop]: trace histogram [68, 67, 67, 67, 67, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 18:01:52,303 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Ended with exit code 0 [2023-12-19 18:01:52,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:01:52,503 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:01:52,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:01:52,503 INFO L85 PathProgramCache]: Analyzing trace with hash -786919907, now seen corresponding path program 79 times [2023-12-19 18:01:52,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:01:52,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146149131] [2023-12-19 18:01:52,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:01:52,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:01:52,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:01:59,404 INFO L134 CoverageAnalysis]: Checked inductivity of 13400 backedges. 8780 proven. 4620 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:01:59,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:01:59,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146149131] [2023-12-19 18:01:59,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146149131] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 18:01:59,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331281875] [2023-12-19 18:01:59,404 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-19 18:01:59,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:01:59,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:01:59,405 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 18:01:59,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2023-12-19 18:01:59,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:01:59,645 INFO L262 TraceCheckSpWp]: Trace formula consists of 1509 conjuncts, 136 conjunts are in the unsatisfiable core [2023-12-19 18:01:59,649 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:02:04,303 INFO L134 CoverageAnalysis]: Checked inductivity of 13400 backedges. 8976 proven. 4422 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 18:02:04,304 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 18:02:08,133 INFO L134 CoverageAnalysis]: Checked inductivity of 13400 backedges. 8976 proven. 4422 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 18:02:08,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [331281875] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 18:02:08,133 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 18:02:08,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [137, 136, 136] total 206 [2023-12-19 18:02:08,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318094827] [2023-12-19 18:02:08,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 18:02:08,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 206 states [2023-12-19 18:02:08,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:02:08,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 206 interpolants. [2023-12-19 18:02:08,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9456, Invalid=32774, Unknown=0, NotChecked=0, Total=42230 [2023-12-19 18:02:08,137 INFO L87 Difference]: Start difference. First operand 412 states and 415 transitions. Second operand has 206 states, 206 states have (on average 3.3349514563106797) internal successors, (687), 206 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:02:12,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:02:12,672 INFO L93 Difference]: Finished difference Result 955 states and 1093 transitions. [2023-12-19 18:02:12,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2023-12-19 18:02:12,672 INFO L78 Accepts]: Start accepts. Automaton has has 206 states, 206 states have (on average 3.3349514563106797) internal successors, (687), 206 states have internal predecessors, (687), 0 states have call successors, (0), 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 411 [2023-12-19 18:02:12,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:02:12,674 INFO L225 Difference]: With dead ends: 955 [2023-12-19 18:02:12,674 INFO L226 Difference]: Without dead ends: 682 [2023-12-19 18:02:12,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1024 GetRequests, 621 SyntacticMatches, 132 SemanticMatches, 271 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27847 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=18570, Invalid=55686, Unknown=0, NotChecked=0, Total=74256 [2023-12-19 18:02:12,678 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 974 mSDsluCounter, 1545 mSDsCounter, 0 mSdLazyCounter, 1883 mSolverCounterSat, 261 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 974 SdHoareTripleChecker+Valid, 1682 SdHoareTripleChecker+Invalid, 2144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 261 IncrementalHoareTripleChecker+Valid, 1883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 18:02:12,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [974 Valid, 1682 Invalid, 2144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [261 Valid, 1883 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 18:02:12,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2023-12-19 18:02:12,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 414. [2023-12-19 18:02:12,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 413 states have (on average 1.0096852300242132) internal successors, (417), 413 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:02:12,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 417 transitions. [2023-12-19 18:02:12,711 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 417 transitions. Word has length 411 [2023-12-19 18:02:12,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:02:12,711 INFO L495 AbstractCegarLoop]: Abstraction has 414 states and 417 transitions. [2023-12-19 18:02:12,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 206 states, 206 states have (on average 3.3349514563106797) internal successors, (687), 206 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:02:12,711 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 417 transitions. [2023-12-19 18:02:12,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2023-12-19 18:02:12,712 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:02:12,713 INFO L195 NwaCegarLoop]: trace histogram [68, 68, 67, 67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 18:02:12,719 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Ended with exit code 0 [2023-12-19 18:02:12,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable81 [2023-12-19 18:02:12,919 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:02:12,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:02:12,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1691470654, now seen corresponding path program 80 times [2023-12-19 18:02:12,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:02:12,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452956451] [2023-12-19 18:02:12,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:02:12,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:02:13,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:19,797 INFO L134 CoverageAnalysis]: Checked inductivity of 13534 backedges. 8780 proven. 4754 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:02:19,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:02:19,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452956451] [2023-12-19 18:02:19,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452956451] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 18:02:19,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320993077] [2023-12-19 18:02:19,798 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-19 18:02:19,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:02:19,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:02:19,799 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 18:02:19,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2023-12-19 18:02:20,036 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-19 18:02:20,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 18:02:20,044 INFO L262 TraceCheckSpWp]: Trace formula consists of 1519 conjuncts, 138 conjunts are in the unsatisfiable core [2023-12-19 18:02:20,047 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:02:24,920 INFO L134 CoverageAnalysis]: Checked inductivity of 13534 backedges. 8978 proven. 4556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:02:24,920 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 18:02:29,496 INFO L134 CoverageAnalysis]: Checked inductivity of 13534 backedges. 8978 proven. 4556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:02:29,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1320993077] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 18:02:29,496 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 18:02:29,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [138, 138, 138] total 208 [2023-12-19 18:02:29,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617895360] [2023-12-19 18:02:29,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 18:02:29,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 208 states [2023-12-19 18:02:29,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:02:29,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 208 interpolants. [2023-12-19 18:02:29,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9663, Invalid=33393, Unknown=0, NotChecked=0, Total=43056 [2023-12-19 18:02:29,500 INFO L87 Difference]: Start difference. First operand 414 states and 417 transitions. Second operand has 208 states, 208 states have (on average 3.3125) internal successors, (689), 208 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:02:34,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:02:34,045 INFO L93 Difference]: Finished difference Result 963 states and 1103 transitions. [2023-12-19 18:02:34,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2023-12-19 18:02:34,046 INFO L78 Accepts]: Start accepts. Automaton has has 208 states, 208 states have (on average 3.3125) internal successors, (689), 208 states have internal predecessors, (689), 0 states have call successors, (0), 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 413 [2023-12-19 18:02:34,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:02:34,047 INFO L225 Difference]: With dead ends: 963 [2023-12-19 18:02:34,047 INFO L226 Difference]: Without dead ends: 688 [2023-12-19 18:02:34,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1030 GetRequests, 622 SyntacticMatches, 134 SemanticMatches, 274 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28400 ImplicationChecksByTransitivity, 14.0s TimeCoverageRelationStatistics Valid=19049, Invalid=56851, Unknown=0, NotChecked=0, Total=75900 [2023-12-19 18:02:34,051 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 1100 mSDsluCounter, 1713 mSDsCounter, 0 mSdLazyCounter, 2058 mSolverCounterSat, 293 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1100 SdHoareTripleChecker+Valid, 1852 SdHoareTripleChecker+Invalid, 2351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 293 IncrementalHoareTripleChecker+Valid, 2058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 18:02:34,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1100 Valid, 1852 Invalid, 2351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [293 Valid, 2058 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 18:02:34,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2023-12-19 18:02:34,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 416. [2023-12-19 18:02:34,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 415 states have (on average 1.0096385542168675) internal successors, (419), 415 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:02:34,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 419 transitions. [2023-12-19 18:02:34,082 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 419 transitions. Word has length 413 [2023-12-19 18:02:34,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:02:34,082 INFO L495 AbstractCegarLoop]: Abstraction has 416 states and 419 transitions. [2023-12-19 18:02:34,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 208 states, 208 states have (on average 3.3125) internal successors, (689), 208 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:02:34,082 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 419 transitions. [2023-12-19 18:02:34,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2023-12-19 18:02:34,084 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:02:34,084 INFO L195 NwaCegarLoop]: trace histogram [69, 68, 68, 67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 18:02:34,093 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Forceful destruction successful, exit code 0 [2023-12-19 18:02:34,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:02:34,291 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:02:34,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:02:34,291 INFO L85 PathProgramCache]: Analyzing trace with hash 913622567, now seen corresponding path program 81 times [2023-12-19 18:02:34,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:02:34,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529733641] [2023-12-19 18:02:34,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:02:34,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:02:34,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:39,251 INFO L134 CoverageAnalysis]: Checked inductivity of 13670 backedges. 4556 proven. 9114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:02:39,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:02:39,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529733641] [2023-12-19 18:02:39,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529733641] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 18:02:39,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71819199] [2023-12-19 18:02:39,251 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-19 18:02:39,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:02:39,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:02:39,253 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 18:02:39,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2023-12-19 18:02:39,636 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 69 check-sat command(s) [2023-12-19 18:02:39,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 18:02:39,644 INFO L262 TraceCheckSpWp]: Trace formula consists of 1529 conjuncts, 142 conjunts are in the unsatisfiable core [2023-12-19 18:02:39,648 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:02:39,867 INFO L134 CoverageAnalysis]: Checked inductivity of 13670 backedges. 4692 proven. 8978 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:02:39,867 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 18:02:41,855 INFO L134 CoverageAnalysis]: Checked inductivity of 13670 backedges. 4692 proven. 8978 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:02:41,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71819199] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 18:02:41,856 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 18:02:41,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71, 71] total 74 [2023-12-19 18:02:41,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11392417] [2023-12-19 18:02:41,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 18:02:41,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2023-12-19 18:02:41,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:02:41,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2023-12-19 18:02:41,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2565, Invalid=2985, Unknown=0, NotChecked=0, Total=5550 [2023-12-19 18:02:41,858 INFO L87 Difference]: Start difference. First operand 416 states and 419 transitions. Second operand has 75 states, 75 states have (on average 5.84) internal successors, (438), 74 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) [2023-12-19 18:02:42,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:02:42,866 INFO L93 Difference]: Finished difference Result 433 states and 437 transitions. [2023-12-19 18:02:42,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2023-12-19 18:02:42,866 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 5.84) internal successors, (438), 74 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 415 [2023-12-19 18:02:42,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:02:42,867 INFO L225 Difference]: With dead ends: 433 [2023-12-19 18:02:42,868 INFO L226 Difference]: Without dead ends: 431 [2023-12-19 18:02:42,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1036 GetRequests, 758 SyntacticMatches, 135 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10255 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=7744, Invalid=13136, Unknown=0, NotChecked=0, Total=20880 [2023-12-19 18:02:42,868 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 82 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 18:02:42,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 663 Invalid, 748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 744 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 18:02:42,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2023-12-19 18:02:42,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 424. [2023-12-19 18:02:42,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 423 states have (on average 1.0094562647754137) internal successors, (427), 423 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:02:42,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 427 transitions. [2023-12-19 18:02:42,900 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 427 transitions. Word has length 415 [2023-12-19 18:02:42,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:02:42,900 INFO L495 AbstractCegarLoop]: Abstraction has 424 states and 427 transitions. [2023-12-19 18:02:42,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 5.84) internal successors, (438), 74 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) [2023-12-19 18:02:42,900 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 427 transitions. [2023-12-19 18:02:42,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2023-12-19 18:02:42,901 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:02:42,901 INFO L195 NwaCegarLoop]: trace histogram [70, 69, 69, 69, 69, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 18:02:42,909 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Forceful destruction successful, exit code 0 [2023-12-19 18:02:43,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:02:43,109 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:02:43,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:02:43,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1333264115, now seen corresponding path program 82 times [2023-12-19 18:02:43,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:02:43,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735328380] [2023-12-19 18:02:43,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:02:43,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:02:43,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:02:49,745 INFO L134 CoverageAnalysis]: Checked inductivity of 14214 backedges. 9318 proven. 4896 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:02:49,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:02:49,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735328380] [2023-12-19 18:02:49,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735328380] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 18:02:49,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390460135] [2023-12-19 18:02:49,746 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-19 18:02:49,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:02:49,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:02:49,747 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 18:02:49,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2023-12-19 18:02:50,000 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-19 18:02:50,000 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 18:02:50,009 INFO L262 TraceCheckSpWp]: Trace formula consists of 1553 conjuncts, 141 conjunts are in the unsatisfiable core [2023-12-19 18:02:50,012 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:02:54,282 INFO L134 CoverageAnalysis]: Checked inductivity of 14214 backedges. 9522 proven. 4692 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:02:54,282 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 18:02:58,012 INFO L134 CoverageAnalysis]: Checked inductivity of 14214 backedges. 9522 proven. 4692 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:02:58,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390460135] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 18:02:58,012 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 18:02:58,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [141, 141, 141] total 215 [2023-12-19 18:02:58,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853631924] [2023-12-19 18:02:58,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 18:02:58,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 215 states [2023-12-19 18:02:58,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:02:58,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 215 interpolants. [2023-12-19 18:02:58,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10370, Invalid=35640, Unknown=0, NotChecked=0, Total=46010 [2023-12-19 18:02:58,016 INFO L87 Difference]: Start difference. First operand 424 states and 427 transitions. Second operand has 215 states, 215 states have (on average 3.3302325581395347) internal successors, (716), 215 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:03:06,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:03:06,046 INFO L93 Difference]: Finished difference Result 1266 states and 1411 transitions. [2023-12-19 18:03:06,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 211 states. [2023-12-19 18:03:06,046 INFO L78 Accepts]: Start accepts. Automaton has has 215 states, 215 states have (on average 3.3302325581395347) internal successors, (716), 215 states have internal predecessors, (716), 0 states have call successors, (0), 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 423 [2023-12-19 18:03:06,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:03:06,048 INFO L225 Difference]: With dead ends: 1266 [2023-12-19 18:03:06,048 INFO L226 Difference]: Without dead ends: 708 [2023-12-19 18:03:06,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1124 GetRequests, 637 SyntacticMatches, 135 SemanticMatches, 352 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42139 ImplicationChecksByTransitivity, 14.4s TimeCoverageRelationStatistics Valid=30179, Invalid=94783, Unknown=0, NotChecked=0, Total=124962 [2023-12-19 18:03:06,054 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 1487 mSDsluCounter, 2143 mSDsCounter, 0 mSdLazyCounter, 2510 mSolverCounterSat, 407 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1487 SdHoareTripleChecker+Valid, 2284 SdHoareTripleChecker+Invalid, 2917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 407 IncrementalHoareTripleChecker+Valid, 2510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-19 18:03:06,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1487 Valid, 2284 Invalid, 2917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [407 Valid, 2510 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-19 18:03:06,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2023-12-19 18:03:06,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 428. [2023-12-19 18:03:06,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 427 states have (on average 1.009367681498829) internal successors, (431), 427 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:03:06,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 431 transitions. [2023-12-19 18:03:06,086 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 431 transitions. Word has length 423 [2023-12-19 18:03:06,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:03:06,086 INFO L495 AbstractCegarLoop]: Abstraction has 428 states and 431 transitions. [2023-12-19 18:03:06,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 215 states, 215 states have (on average 3.3302325581395347) internal successors, (716), 215 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:03:06,087 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 431 transitions. [2023-12-19 18:03:06,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2023-12-19 18:03:06,088 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:03:06,088 INFO L195 NwaCegarLoop]: trace histogram [71, 70, 70, 69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 18:03:06,097 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Forceful destruction successful, exit code 0 [2023-12-19 18:03:06,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable84 [2023-12-19 18:03:06,298 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:03:06,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:03:06,298 INFO L85 PathProgramCache]: Analyzing trace with hash -428967401, now seen corresponding path program 83 times [2023-12-19 18:03:06,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:03:06,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108867190] [2023-12-19 18:03:06,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:03:06,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:03:06,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:03:11,156 INFO L134 CoverageAnalysis]: Checked inductivity of 14492 backedges. 4830 proven. 9662 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:03:11,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:03:11,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108867190] [2023-12-19 18:03:11,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108867190] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 18:03:11,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910981426] [2023-12-19 18:03:11,156 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-19 18:03:11,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:03:11,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:03:11,158 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 18:03:11,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2023-12-19 18:03:11,556 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 71 check-sat command(s) [2023-12-19 18:03:11,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 18:03:11,566 INFO L262 TraceCheckSpWp]: Trace formula consists of 1573 conjuncts, 146 conjunts are in the unsatisfiable core [2023-12-19 18:03:11,570 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:03:11,838 INFO L134 CoverageAnalysis]: Checked inductivity of 14492 backedges. 4970 proven. 9522 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:03:11,838 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 18:03:14,383 INFO L134 CoverageAnalysis]: Checked inductivity of 14492 backedges. 4970 proven. 9522 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:03:14,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910981426] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 18:03:14,383 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 18:03:14,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73, 73] total 76 [2023-12-19 18:03:14,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980427960] [2023-12-19 18:03:14,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 18:03:14,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2023-12-19 18:03:14,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:03:14,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2023-12-19 18:03:14,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2710, Invalid=3142, Unknown=0, NotChecked=0, Total=5852 [2023-12-19 18:03:14,386 INFO L87 Difference]: Start difference. First operand 428 states and 431 transitions. Second operand has 77 states, 77 states have (on average 5.8441558441558445) internal successors, (450), 76 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:03:15,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:03:15,491 INFO L93 Difference]: Finished difference Result 445 states and 449 transitions. [2023-12-19 18:03:15,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2023-12-19 18:03:15,491 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 5.8441558441558445) internal successors, (450), 76 states have internal predecessors, (450), 0 states have call successors, (0), 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 427 [2023-12-19 18:03:15,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:03:15,493 INFO L225 Difference]: With dead ends: 445 [2023-12-19 18:03:15,493 INFO L226 Difference]: Without dead ends: 443 [2023-12-19 18:03:15,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1066 GetRequests, 780 SyntacticMatches, 139 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10837 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=8181, Invalid=13871, Unknown=0, NotChecked=0, Total=22052 [2023-12-19 18:03:15,497 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 80 mSDsluCounter, 609 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 691 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 18:03:15,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 691 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 18:03:15,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2023-12-19 18:03:15,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 436. [2023-12-19 18:03:15,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 435 states have (on average 1.0091954022988505) internal successors, (439), 435 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:03:15,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 439 transitions. [2023-12-19 18:03:15,530 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 439 transitions. Word has length 427 [2023-12-19 18:03:15,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:03:15,530 INFO L495 AbstractCegarLoop]: Abstraction has 436 states and 439 transitions. [2023-12-19 18:03:15,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 5.8441558441558445) internal successors, (450), 76 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:03:15,530 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 439 transitions. [2023-12-19 18:03:15,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2023-12-19 18:03:15,531 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:03:15,532 INFO L195 NwaCegarLoop]: trace histogram [72, 71, 71, 71, 71, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 18:03:15,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Forceful destruction successful, exit code 0 [2023-12-19 18:03:15,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,84 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:03:15,740 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:03:15,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:03:15,740 INFO L85 PathProgramCache]: Analyzing trace with hash 826721533, now seen corresponding path program 84 times [2023-12-19 18:03:15,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:03:15,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800759316] [2023-12-19 18:03:15,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:03:15,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:03:15,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:03:23,614 INFO L134 CoverageAnalysis]: Checked inductivity of 15052 backedges. 9872 proven. 5180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:03:23,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:03:23,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800759316] [2023-12-19 18:03:23,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800759316] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 18:03:23,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838203893] [2023-12-19 18:03:23,615 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-19 18:03:23,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:03:23,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:03:23,617 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 18:03:23,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2023-12-19 18:03:24,003 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 72 check-sat command(s) [2023-12-19 18:03:24,003 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 18:03:24,012 INFO L262 TraceCheckSpWp]: Trace formula consists of 1597 conjuncts, 145 conjunts are in the unsatisfiable core [2023-12-19 18:03:24,017 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:03:28,780 INFO L134 CoverageAnalysis]: Checked inductivity of 15052 backedges. 10082 proven. 4970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:03:28,780 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 18:03:34,260 INFO L134 CoverageAnalysis]: Checked inductivity of 15052 backedges. 10082 proven. 4970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:03:34,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1838203893] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 18:03:34,261 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 18:03:34,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [145, 145, 145] total 221 [2023-12-19 18:03:34,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909951249] [2023-12-19 18:03:34,261 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 18:03:34,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 221 states [2023-12-19 18:03:34,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:03:34,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 221 interpolants. [2023-12-19 18:03:34,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10954, Invalid=37666, Unknown=0, NotChecked=0, Total=48620 [2023-12-19 18:03:34,267 INFO L87 Difference]: Start difference. First operand 436 states and 439 transitions. Second operand has 221 states, 221 states have (on average 3.330316742081448) internal successors, (736), 221 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:03:42,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:03:42,663 INFO L93 Difference]: Finished difference Result 1302 states and 1451 transitions. [2023-12-19 18:03:42,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 217 states. [2023-12-19 18:03:42,664 INFO L78 Accepts]: Start accepts. Automaton has has 221 states, 221 states have (on average 3.330316742081448) internal successors, (736), 221 states have internal predecessors, (736), 0 states have call successors, (0), 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 435 [2023-12-19 18:03:42,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:03:42,665 INFO L225 Difference]: With dead ends: 1302 [2023-12-19 18:03:42,665 INFO L226 Difference]: Without dead ends: 728 [2023-12-19 18:03:42,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1156 GetRequests, 655 SyntacticMatches, 139 SemanticMatches, 362 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44568 ImplicationChecksByTransitivity, 17.6s TimeCoverageRelationStatistics Valid=31905, Invalid=100227, Unknown=0, NotChecked=0, Total=132132 [2023-12-19 18:03:42,670 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 1368 mSDsluCounter, 2885 mSDsCounter, 0 mSdLazyCounter, 3268 mSolverCounterSat, 379 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1368 SdHoareTripleChecker+Valid, 3030 SdHoareTripleChecker+Invalid, 3647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 379 IncrementalHoareTripleChecker+Valid, 3268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-19 18:03:42,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1368 Valid, 3030 Invalid, 3647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [379 Valid, 3268 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-19 18:03:42,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2023-12-19 18:03:42,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 440. [2023-12-19 18:03:42,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 439 states have (on average 1.0091116173120729) internal successors, (443), 439 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:03:42,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 443 transitions. [2023-12-19 18:03:42,704 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 443 transitions. Word has length 435 [2023-12-19 18:03:42,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:03:42,704 INFO L495 AbstractCegarLoop]: Abstraction has 440 states and 443 transitions. [2023-12-19 18:03:42,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 221 states, 221 states have (on average 3.330316742081448) internal successors, (736), 221 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:03:42,704 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 443 transitions. [2023-12-19 18:03:42,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2023-12-19 18:03:42,705 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:03:42,706 INFO L195 NwaCegarLoop]: trace histogram [73, 72, 72, 71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 18:03:42,713 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Forceful destruction successful, exit code 0 [2023-12-19 18:03:42,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,85 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:03:42,913 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:03:42,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:03:42,913 INFO L85 PathProgramCache]: Analyzing trace with hash -44171513, now seen corresponding path program 85 times [2023-12-19 18:03:42,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:03:42,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455786732] [2023-12-19 18:03:42,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:03:42,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:03:43,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:03:48,159 INFO L134 CoverageAnalysis]: Checked inductivity of 15338 backedges. 5112 proven. 10226 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:03:48,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:03:48,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455786732] [2023-12-19 18:03:48,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455786732] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 18:03:48,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907033195] [2023-12-19 18:03:48,160 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-19 18:03:48,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:03:48,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:03:48,162 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 18:03:48,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2023-12-19 18:03:48,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:03:48,430 INFO L262 TraceCheckSpWp]: Trace formula consists of 1617 conjuncts, 150 conjunts are in the unsatisfiable core [2023-12-19 18:03:48,435 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:03:48,679 INFO L134 CoverageAnalysis]: Checked inductivity of 15338 backedges. 5256 proven. 10082 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:03:48,679 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 18:03:51,520 INFO L134 CoverageAnalysis]: Checked inductivity of 15338 backedges. 5256 proven. 10082 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:03:51,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907033195] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 18:03:51,521 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 18:03:51,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75, 75] total 78 [2023-12-19 18:03:51,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374019587] [2023-12-19 18:03:51,522 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 18:03:51,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2023-12-19 18:03:51,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:03:51,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2023-12-19 18:03:51,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2859, Invalid=3303, Unknown=0, NotChecked=0, Total=6162 [2023-12-19 18:03:51,537 INFO L87 Difference]: Start difference. First operand 440 states and 443 transitions. Second operand has 79 states, 79 states have (on average 5.848101265822785) internal successors, (462), 78 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:03:52,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:03:52,885 INFO L93 Difference]: Finished difference Result 457 states and 461 transitions. [2023-12-19 18:03:52,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2023-12-19 18:03:52,886 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 5.848101265822785) internal successors, (462), 78 states have internal predecessors, (462), 0 states have call successors, (0), 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 439 [2023-12-19 18:03:52,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:03:52,887 INFO L225 Difference]: With dead ends: 457 [2023-12-19 18:03:52,887 INFO L226 Difference]: Without dead ends: 455 [2023-12-19 18:03:52,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1096 GetRequests, 802 SyntacticMatches, 143 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11435 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=8630, Invalid=14626, Unknown=0, NotChecked=0, Total=23256 [2023-12-19 18:03:52,890 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 157 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 708 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 18:03:52,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 599 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 708 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 18:03:52,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2023-12-19 18:03:52,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 448. [2023-12-19 18:03:52,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 447 states have (on average 1.0089485458612975) internal successors, (451), 447 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:03:52,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 451 transitions. [2023-12-19 18:03:52,922 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 451 transitions. Word has length 439 [2023-12-19 18:03:52,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:03:52,922 INFO L495 AbstractCegarLoop]: Abstraction has 448 states and 451 transitions. [2023-12-19 18:03:52,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 5.848101265822785) internal successors, (462), 78 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:03:52,923 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 451 transitions. [2023-12-19 18:03:52,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2023-12-19 18:03:52,924 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:03:52,924 INFO L195 NwaCegarLoop]: trace histogram [74, 73, 73, 73, 73, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 18:03:52,933 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Forceful destruction successful, exit code 0 [2023-12-19 18:03:53,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2023-12-19 18:03:53,131 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:03:53,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:03:53,131 INFO L85 PathProgramCache]: Analyzing trace with hash 848976365, now seen corresponding path program 86 times [2023-12-19 18:03:53,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:03:53,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949573204] [2023-12-19 18:03:53,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:03:53,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:03:53,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:04:01,708 INFO L134 CoverageAnalysis]: Checked inductivity of 15914 backedges. 10442 proven. 5472 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:04:01,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:04:01,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949573204] [2023-12-19 18:04:01,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949573204] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 18:04:01,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61006161] [2023-12-19 18:04:01,709 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-19 18:04:01,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:04:01,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:04:01,710 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 18:04:01,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2023-12-19 18:04:01,984 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-19 18:04:01,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 18:04:01,993 INFO L262 TraceCheckSpWp]: Trace formula consists of 1641 conjuncts, 148 conjunts are in the unsatisfiable core [2023-12-19 18:04:01,998 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:04:08,314 INFO L134 CoverageAnalysis]: Checked inductivity of 15914 backedges. 10656 proven. 5256 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 18:04:08,315 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 18:04:12,137 INFO L134 CoverageAnalysis]: Checked inductivity of 15914 backedges. 10656 proven. 5256 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 18:04:12,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [61006161] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 18:04:12,138 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 18:04:12,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [149, 148, 148] total 224 [2023-12-19 18:04:12,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958255033] [2023-12-19 18:04:12,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 18:04:12,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 224 states [2023-12-19 18:04:12,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:04:12,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 224 interpolants. [2023-12-19 18:04:12,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11178, Invalid=38774, Unknown=0, NotChecked=0, Total=49952 [2023-12-19 18:04:12,142 INFO L87 Difference]: Start difference. First operand 448 states and 451 transitions. Second operand has 224 states, 224 states have (on average 3.3348214285714284) internal successors, (747), 224 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:04:17,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:04:17,396 INFO L93 Difference]: Finished difference Result 1039 states and 1189 transitions. [2023-12-19 18:04:17,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2023-12-19 18:04:17,397 INFO L78 Accepts]: Start accepts. Automaton has has 224 states, 224 states have (on average 3.3348214285714284) internal successors, (747), 224 states have internal predecessors, (747), 0 states have call successors, (0), 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 447 [2023-12-19 18:04:17,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:04:17,398 INFO L225 Difference]: With dead ends: 1039 [2023-12-19 18:04:17,398 INFO L226 Difference]: Without dead ends: 742 [2023-12-19 18:04:17,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1114 GetRequests, 675 SyntacticMatches, 144 SemanticMatches, 295 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32971 ImplicationChecksByTransitivity, 15.8s TimeCoverageRelationStatistics Valid=21984, Invalid=65928, Unknown=0, NotChecked=0, Total=87912 [2023-12-19 18:04:17,401 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 1591 mSDsluCounter, 1576 mSDsCounter, 0 mSdLazyCounter, 1953 mSolverCounterSat, 416 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1591 SdHoareTripleChecker+Valid, 1725 SdHoareTripleChecker+Invalid, 2369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 416 IncrementalHoareTripleChecker+Valid, 1953 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 18:04:17,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1591 Valid, 1725 Invalid, 2369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [416 Valid, 1953 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 18:04:17,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2023-12-19 18:04:17,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 450. [2023-12-19 18:04:17,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 449 states have (on average 1.0089086859688197) internal successors, (453), 449 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:04:17,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 453 transitions. [2023-12-19 18:04:17,435 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 453 transitions. Word has length 447 [2023-12-19 18:04:17,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:04:17,435 INFO L495 AbstractCegarLoop]: Abstraction has 450 states and 453 transitions. [2023-12-19 18:04:17,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 224 states, 224 states have (on average 3.3348214285714284) internal successors, (747), 224 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:04:17,435 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 453 transitions. [2023-12-19 18:04:17,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2023-12-19 18:04:17,437 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:04:17,437 INFO L195 NwaCegarLoop]: trace histogram [74, 74, 73, 73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 18:04:17,444 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Ended with exit code 0 [2023-12-19 18:04:17,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,87 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:04:17,643 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:04:17,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:04:17,643 INFO L85 PathProgramCache]: Analyzing trace with hash -729787886, now seen corresponding path program 87 times [2023-12-19 18:04:17,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:04:17,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044490058] [2023-12-19 18:04:17,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:04:17,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:04:17,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:04:26,517 INFO L134 CoverageAnalysis]: Checked inductivity of 16060 backedges. 10442 proven. 5618 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:04:26,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:04:26,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044490058] [2023-12-19 18:04:26,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044490058] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 18:04:26,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524169123] [2023-12-19 18:04:26,518 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-19 18:04:26,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:04:26,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:04:26,519 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 18:04:26,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2023-12-19 18:04:26,933 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 74 check-sat command(s) [2023-12-19 18:04:26,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 18:04:26,943 INFO L262 TraceCheckSpWp]: Trace formula consists of 1651 conjuncts, 150 conjunts are in the unsatisfiable core [2023-12-19 18:04:26,948 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:04:31,840 INFO L134 CoverageAnalysis]: Checked inductivity of 16060 backedges. 10658 proven. 5402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:04:31,841 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 18:04:36,498 INFO L134 CoverageAnalysis]: Checked inductivity of 16060 backedges. 10658 proven. 5402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:04:36,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524169123] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 18:04:36,499 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 18:04:36,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [150, 150, 150] total 226 [2023-12-19 18:04:36,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219569196] [2023-12-19 18:04:36,499 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 18:04:36,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 226 states [2023-12-19 18:04:36,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:04:36,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 226 interpolants. [2023-12-19 18:04:36,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11403, Invalid=39447, Unknown=0, NotChecked=0, Total=50850 [2023-12-19 18:04:36,503 INFO L87 Difference]: Start difference. First operand 450 states and 453 transitions. Second operand has 226 states, 226 states have (on average 3.314159292035398) internal successors, (749), 226 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:04:41,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:04:41,946 INFO L93 Difference]: Finished difference Result 1047 states and 1199 transitions. [2023-12-19 18:04:41,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2023-12-19 18:04:41,946 INFO L78 Accepts]: Start accepts. Automaton has has 226 states, 226 states have (on average 3.314159292035398) internal successors, (749), 226 states have internal predecessors, (749), 0 states have call successors, (0), 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 449 [2023-12-19 18:04:41,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:04:41,948 INFO L225 Difference]: With dead ends: 1047 [2023-12-19 18:04:41,948 INFO L226 Difference]: Without dead ends: 748 [2023-12-19 18:04:41,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1120 GetRequests, 676 SyntacticMatches, 146 SemanticMatches, 298 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33572 ImplicationChecksByTransitivity, 15.7s TimeCoverageRelationStatistics Valid=22505, Invalid=67195, Unknown=0, NotChecked=0, Total=89700 [2023-12-19 18:04:41,954 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 1358 mSDsluCounter, 1818 mSDsCounter, 0 mSdLazyCounter, 2191 mSolverCounterSat, 360 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1358 SdHoareTripleChecker+Valid, 1969 SdHoareTripleChecker+Invalid, 2551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 360 IncrementalHoareTripleChecker+Valid, 2191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 18:04:41,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1358 Valid, 1969 Invalid, 2551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [360 Valid, 2191 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 18:04:41,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2023-12-19 18:04:41,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 452. [2023-12-19 18:04:41,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 451 states have (on average 1.0088691796008868) internal successors, (455), 451 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:04:41,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 455 transitions. [2023-12-19 18:04:41,989 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 455 transitions. Word has length 449 [2023-12-19 18:04:41,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:04:41,989 INFO L495 AbstractCegarLoop]: Abstraction has 452 states and 455 transitions. [2023-12-19 18:04:41,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 226 states, 226 states have (on average 3.314159292035398) internal successors, (749), 226 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:04:41,989 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 455 transitions. [2023-12-19 18:04:41,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2023-12-19 18:04:41,991 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:04:41,991 INFO L195 NwaCegarLoop]: trace histogram [75, 74, 74, 73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 18:04:42,000 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Forceful destruction successful, exit code 0 [2023-12-19 18:04:42,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89,88 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:04:42,198 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:04:42,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:04:42,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1798777609, now seen corresponding path program 88 times [2023-12-19 18:04:42,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:04:42,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256403258] [2023-12-19 18:04:42,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:04:42,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:04:42,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:04:48,066 INFO L134 CoverageAnalysis]: Checked inductivity of 16208 backedges. 5402 proven. 10806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:04:48,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:04:48,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256403258] [2023-12-19 18:04:48,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256403258] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 18:04:48,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120724911] [2023-12-19 18:04:48,066 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-19 18:04:48,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:04:48,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:04:48,067 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 18:04:48,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2023-12-19 18:04:48,336 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-19 18:04:48,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 18:04:48,349 INFO L262 TraceCheckSpWp]: Trace formula consists of 1661 conjuncts, 154 conjunts are in the unsatisfiable core [2023-12-19 18:04:48,353 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:04:48,803 INFO L134 CoverageAnalysis]: Checked inductivity of 16208 backedges. 5550 proven. 10658 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:04:48,803 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 18:04:52,794 INFO L134 CoverageAnalysis]: Checked inductivity of 16208 backedges. 5550 proven. 10658 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:04:52,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120724911] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 18:04:52,794 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 18:04:52,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77, 77] total 80 [2023-12-19 18:04:52,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499089467] [2023-12-19 18:04:52,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 18:04:52,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2023-12-19 18:04:52,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:04:52,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2023-12-19 18:04:52,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3012, Invalid=3468, Unknown=0, NotChecked=0, Total=6480 [2023-12-19 18:04:52,796 INFO L87 Difference]: Start difference. First operand 452 states and 455 transitions. Second operand has 81 states, 81 states have (on average 5.851851851851852) internal successors, (474), 80 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:04:54,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:04:54,519 INFO L93 Difference]: Finished difference Result 469 states and 473 transitions. [2023-12-19 18:04:54,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2023-12-19 18:04:54,519 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 5.851851851851852) internal successors, (474), 80 states have internal predecessors, (474), 0 states have call successors, (0), 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 451 [2023-12-19 18:04:54,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:04:54,521 INFO L225 Difference]: With dead ends: 469 [2023-12-19 18:04:54,521 INFO L226 Difference]: Without dead ends: 467 [2023-12-19 18:04:54,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1126 GetRequests, 824 SyntacticMatches, 147 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12049 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=9091, Invalid=15401, Unknown=0, NotChecked=0, Total=24492 [2023-12-19 18:04:54,523 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 86 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 783 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 684 SdHoareTripleChecker+Invalid, 787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 18:04:54,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 684 Invalid, 787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 783 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 18:04:54,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2023-12-19 18:04:54,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 460. [2023-12-19 18:04:54,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 459 states have (on average 1.008714596949891) internal successors, (463), 459 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:04:54,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 463 transitions. [2023-12-19 18:04:54,557 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 463 transitions. Word has length 451 [2023-12-19 18:04:54,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:04:54,558 INFO L495 AbstractCegarLoop]: Abstraction has 460 states and 463 transitions. [2023-12-19 18:04:54,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 5.851851851851852) internal successors, (474), 80 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:04:54,558 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 463 transitions. [2023-12-19 18:04:54,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2023-12-19 18:04:54,559 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:04:54,559 INFO L195 NwaCegarLoop]: trace histogram [76, 75, 75, 75, 75, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 18:04:54,565 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Ended with exit code 0 [2023-12-19 18:04:54,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,89 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:04:54,760 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:04:54,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:04:54,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1333248035, now seen corresponding path program 89 times [2023-12-19 18:04:54,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:04:54,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890102713] [2023-12-19 18:04:54,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:04:54,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:04:54,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:05:03,195 INFO L134 CoverageAnalysis]: Checked inductivity of 16800 backedges. 11028 proven. 5772 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:05:03,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:05:03,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890102713] [2023-12-19 18:05:03,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890102713] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 18:05:03,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913926623] [2023-12-19 18:05:03,195 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-19 18:05:03,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:05:03,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:05:03,196 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 18:05:03,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2023-12-19 18:05:03,618 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 76 check-sat command(s) [2023-12-19 18:05:03,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 18:05:03,627 INFO L262 TraceCheckSpWp]: Trace formula consists of 1685 conjuncts, 153 conjunts are in the unsatisfiable core [2023-12-19 18:05:03,631 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:05:08,652 INFO L134 CoverageAnalysis]: Checked inductivity of 16800 backedges. 11250 proven. 5550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:05:08,652 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 18:05:13,096 INFO L134 CoverageAnalysis]: Checked inductivity of 16800 backedges. 11250 proven. 5550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:05:13,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913926623] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 18:05:13,096 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 18:05:13,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [153, 153, 153] total 233 [2023-12-19 18:05:13,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849635541] [2023-12-19 18:05:13,097 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 18:05:13,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 233 states [2023-12-19 18:05:13,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:05:13,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 233 interpolants. [2023-12-19 18:05:13,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12170, Invalid=41886, Unknown=0, NotChecked=0, Total=54056 [2023-12-19 18:05:13,101 INFO L87 Difference]: Start difference. First operand 460 states and 463 transitions. Second operand has 233 states, 233 states have (on average 3.3304721030042916) internal successors, (776), 233 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:05:21,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:05:21,314 INFO L93 Difference]: Finished difference Result 1374 states and 1531 transitions. [2023-12-19 18:05:21,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 229 states. [2023-12-19 18:05:21,314 INFO L78 Accepts]: Start accepts. Automaton has has 233 states, 233 states have (on average 3.3304721030042916) internal successors, (776), 233 states have internal predecessors, (776), 0 states have call successors, (0), 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 459 [2023-12-19 18:05:21,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:05:21,316 INFO L225 Difference]: With dead ends: 1374 [2023-12-19 18:05:21,316 INFO L226 Difference]: Without dead ends: 768 [2023-12-19 18:05:21,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1220 GetRequests, 691 SyntacticMatches, 147 SemanticMatches, 382 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49630 ImplicationChecksByTransitivity, 16.6s TimeCoverageRelationStatistics Valid=35501, Invalid=111571, Unknown=0, NotChecked=0, Total=147072 [2023-12-19 18:05:21,324 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 1607 mSDsluCounter, 2571 mSDsCounter, 0 mSdLazyCounter, 2965 mSolverCounterSat, 441 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1607 SdHoareTripleChecker+Valid, 2724 SdHoareTripleChecker+Invalid, 3406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 441 IncrementalHoareTripleChecker+Valid, 2965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-19 18:05:21,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1607 Valid, 2724 Invalid, 3406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [441 Valid, 2965 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-19 18:05:21,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2023-12-19 18:05:21,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 464. [2023-12-19 18:05:21,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 463 states have (on average 1.0086393088552916) internal successors, (467), 463 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:05:21,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 467 transitions. [2023-12-19 18:05:21,362 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 467 transitions. Word has length 459 [2023-12-19 18:05:21,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:05:21,362 INFO L495 AbstractCegarLoop]: Abstraction has 464 states and 467 transitions. [2023-12-19 18:05:21,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 233 states, 233 states have (on average 3.3304721030042916) internal successors, (776), 233 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:05:21,362 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 467 transitions. [2023-12-19 18:05:21,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2023-12-19 18:05:21,364 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:05:21,364 INFO L195 NwaCegarLoop]: trace histogram [77, 76, 76, 75, 75, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 18:05:21,373 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Forceful destruction successful, exit code 0 [2023-12-19 18:05:21,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable91 [2023-12-19 18:05:21,571 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:05:21,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:05:21,571 INFO L85 PathProgramCache]: Analyzing trace with hash -2097906713, now seen corresponding path program 90 times [2023-12-19 18:05:21,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:05:21,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860079332] [2023-12-19 18:05:21,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:05:21,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:05:21,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:05:27,830 INFO L134 CoverageAnalysis]: Checked inductivity of 17102 backedges. 5700 proven. 11402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:05:27,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:05:27,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860079332] [2023-12-19 18:05:27,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860079332] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 18:05:27,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566594768] [2023-12-19 18:05:27,831 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-19 18:05:27,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:05:27,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:05:27,832 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 18:05:27,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2023-12-19 18:05:28,248 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 77 check-sat command(s) [2023-12-19 18:05:28,248 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 18:05:28,257 INFO L262 TraceCheckSpWp]: Trace formula consists of 1705 conjuncts, 158 conjunts are in the unsatisfiable core [2023-12-19 18:05:28,261 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:05:28,723 INFO L134 CoverageAnalysis]: Checked inductivity of 17102 backedges. 5852 proven. 11250 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:05:28,723 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 18:05:32,848 INFO L134 CoverageAnalysis]: Checked inductivity of 17102 backedges. 5852 proven. 11250 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:05:32,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566594768] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 18:05:32,849 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 18:05:32,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79, 79] total 82 [2023-12-19 18:05:32,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62445606] [2023-12-19 18:05:32,849 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 18:05:32,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2023-12-19 18:05:32,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:05:32,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2023-12-19 18:05:32,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3169, Invalid=3637, Unknown=0, NotChecked=0, Total=6806 [2023-12-19 18:05:32,850 INFO L87 Difference]: Start difference. First operand 464 states and 467 transitions. Second operand has 83 states, 83 states have (on average 5.855421686746988) internal successors, (486), 82 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:05:34,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:05:34,644 INFO L93 Difference]: Finished difference Result 481 states and 485 transitions. [2023-12-19 18:05:34,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2023-12-19 18:05:34,645 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 5.855421686746988) internal successors, (486), 82 states have internal predecessors, (486), 0 states have call successors, (0), 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 463 [2023-12-19 18:05:34,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:05:34,646 INFO L225 Difference]: With dead ends: 481 [2023-12-19 18:05:34,646 INFO L226 Difference]: Without dead ends: 479 [2023-12-19 18:05:34,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1156 GetRequests, 846 SyntacticMatches, 151 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12679 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=9564, Invalid=16196, Unknown=0, NotChecked=0, Total=25760 [2023-12-19 18:05:34,648 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 169 mSDsluCounter, 635 mSDsCounter, 0 mSdLazyCounter, 812 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 723 SdHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 18:05:34,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 723 Invalid, 816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 812 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 18:05:34,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2023-12-19 18:05:34,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 472. [2023-12-19 18:05:34,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 471 states have (on average 1.0084925690021231) internal successors, (475), 471 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:05:34,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 475 transitions. [2023-12-19 18:05:34,684 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 475 transitions. Word has length 463 [2023-12-19 18:05:34,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:05:34,684 INFO L495 AbstractCegarLoop]: Abstraction has 472 states and 475 transitions. [2023-12-19 18:05:34,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 5.855421686746988) internal successors, (486), 82 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:05:34,685 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 475 transitions. [2023-12-19 18:05:34,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2023-12-19 18:05:34,686 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:05:34,686 INFO L195 NwaCegarLoop]: trace histogram [78, 77, 77, 77, 77, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 18:05:34,693 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Forceful destruction successful, exit code 0 [2023-12-19 18:05:34,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,91 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:05:34,889 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:05:34,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:05:34,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1546258739, now seen corresponding path program 91 times [2023-12-19 18:05:34,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:05:34,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450006433] [2023-12-19 18:05:34,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:05:34,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:05:35,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:05:45,622 INFO L134 CoverageAnalysis]: Checked inductivity of 17710 backedges. 11630 proven. 6080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:05:45,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:05:45,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450006433] [2023-12-19 18:05:45,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450006433] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 18:05:45,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899819409] [2023-12-19 18:05:45,622 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-19 18:05:45,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:05:45,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:05:45,623 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 18:05:45,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2023-12-19 18:05:45,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:05:45,966 INFO L262 TraceCheckSpWp]: Trace formula consists of 1729 conjuncts, 156 conjunts are in the unsatisfiable core [2023-12-19 18:05:45,971 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:05:53,730 INFO L134 CoverageAnalysis]: Checked inductivity of 17710 backedges. 11856 proven. 5852 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 18:05:53,730 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 18:06:00,282 INFO L134 CoverageAnalysis]: Checked inductivity of 17710 backedges. 11856 proven. 5852 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 18:06:00,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899819409] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 18:06:00,283 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 18:06:00,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [157, 156, 156] total 236 [2023-12-19 18:06:00,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628734780] [2023-12-19 18:06:00,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 18:06:00,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 236 states [2023-12-19 18:06:00,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:06:00,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 236 interpolants. [2023-12-19 18:06:00,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12406, Invalid=43054, Unknown=0, NotChecked=0, Total=55460 [2023-12-19 18:06:00,287 INFO L87 Difference]: Start difference. First operand 472 states and 475 transitions. Second operand has 236 states, 236 states have (on average 3.3347457627118646) internal successors, (787), 236 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:06:06,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:06:06,049 INFO L93 Difference]: Finished difference Result 1095 states and 1253 transitions. [2023-12-19 18:06:06,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2023-12-19 18:06:06,049 INFO L78 Accepts]: Start accepts. Automaton has has 236 states, 236 states have (on average 3.3347457627118646) internal successors, (787), 236 states have internal predecessors, (787), 0 states have call successors, (0), 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 471 [2023-12-19 18:06:06,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:06:06,050 INFO L225 Difference]: With dead ends: 1095 [2023-12-19 18:06:06,050 INFO L226 Difference]: Without dead ends: 782 [2023-12-19 18:06:06,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1174 GetRequests, 711 SyntacticMatches, 152 SemanticMatches, 311 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36627 ImplicationChecksByTransitivity, 21.7s TimeCoverageRelationStatistics Valid=24420, Invalid=73236, Unknown=0, NotChecked=0, Total=97656 [2023-12-19 18:06:06,056 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 1472 mSDsluCounter, 1617 mSDsCounter, 0 mSdLazyCounter, 2018 mSolverCounterSat, 388 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1472 SdHoareTripleChecker+Valid, 1774 SdHoareTripleChecker+Invalid, 2406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 388 IncrementalHoareTripleChecker+Valid, 2018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 18:06:06,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1472 Valid, 1774 Invalid, 2406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [388 Valid, 2018 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 18:06:06,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2023-12-19 18:06:06,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 474. [2023-12-19 18:06:06,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 473 states have (on average 1.0084566596194504) internal successors, (477), 473 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:06:06,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 477 transitions. [2023-12-19 18:06:06,095 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 477 transitions. Word has length 471 [2023-12-19 18:06:06,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:06:06,095 INFO L495 AbstractCegarLoop]: Abstraction has 474 states and 477 transitions. [2023-12-19 18:06:06,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 236 states, 236 states have (on average 3.3347457627118646) internal successors, (787), 236 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:06:06,095 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 477 transitions. [2023-12-19 18:06:06,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2023-12-19 18:06:06,096 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:06:06,097 INFO L195 NwaCegarLoop]: trace histogram [78, 78, 77, 77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 18:06:06,104 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Forceful destruction successful, exit code 0 [2023-12-19 18:06:06,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,92 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:06:06,304 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:06:06,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:06:06,304 INFO L85 PathProgramCache]: Analyzing trace with hash 206508018, now seen corresponding path program 92 times [2023-12-19 18:06:06,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:06:06,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980975626] [2023-12-19 18:06:06,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:06:06,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:06:06,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:06:16,934 INFO L134 CoverageAnalysis]: Checked inductivity of 17864 backedges. 11630 proven. 6234 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:06:16,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:06:16,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980975626] [2023-12-19 18:06:16,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980975626] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 18:06:16,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421161881] [2023-12-19 18:06:16,935 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-19 18:06:16,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:06:16,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:06:16,936 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 18:06:16,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2023-12-19 18:06:17,240 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-19 18:06:17,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 18:06:17,250 INFO L262 TraceCheckSpWp]: Trace formula consists of 1739 conjuncts, 158 conjunts are in the unsatisfiable core [2023-12-19 18:06:17,255 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:06:22,621 INFO L134 CoverageAnalysis]: Checked inductivity of 17864 backedges. 11858 proven. 6006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:06:22,621 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 18:06:27,107 INFO L134 CoverageAnalysis]: Checked inductivity of 17864 backedges. 11858 proven. 6006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:06:27,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1421161881] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 18:06:27,107 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 18:06:27,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [158, 158, 158] total 238 [2023-12-19 18:06:27,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148357434] [2023-12-19 18:06:27,108 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 18:06:27,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 238 states [2023-12-19 18:06:27,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:06:27,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 238 interpolants. [2023-12-19 18:06:27,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12643, Invalid=43763, Unknown=0, NotChecked=0, Total=56406 [2023-12-19 18:06:27,112 INFO L87 Difference]: Start difference. First operand 474 states and 477 transitions. Second operand has 238 states, 238 states have (on average 3.3151260504201683) internal successors, (789), 238 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:06:33,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:06:33,633 INFO L93 Difference]: Finished difference Result 1103 states and 1263 transitions. [2023-12-19 18:06:33,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2023-12-19 18:06:33,633 INFO L78 Accepts]: Start accepts. Automaton has has 238 states, 238 states have (on average 3.3151260504201683) internal successors, (789), 238 states have internal predecessors, (789), 0 states have call successors, (0), 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 473 [2023-12-19 18:06:33,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:06:33,634 INFO L225 Difference]: With dead ends: 1103 [2023-12-19 18:06:33,634 INFO L226 Difference]: Without dead ends: 788 [2023-12-19 18:06:33,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1180 GetRequests, 712 SyntacticMatches, 154 SemanticMatches, 314 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37260 ImplicationChecksByTransitivity, 17.7s TimeCoverageRelationStatistics Valid=24969, Invalid=74571, Unknown=0, NotChecked=0, Total=99540 [2023-12-19 18:06:33,638 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 1294 mSDsluCounter, 2146 mSDsCounter, 0 mSdLazyCounter, 2540 mSolverCounterSat, 343 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1294 SdHoareTripleChecker+Valid, 2305 SdHoareTripleChecker+Invalid, 2883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 343 IncrementalHoareTripleChecker+Valid, 2540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 18:06:33,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1294 Valid, 2305 Invalid, 2883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [343 Valid, 2540 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 18:06:33,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2023-12-19 18:06:33,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 476. [2023-12-19 18:06:33,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 475 states have (on average 1.0084210526315789) internal successors, (479), 475 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:06:33,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 479 transitions. [2023-12-19 18:06:33,680 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 479 transitions. Word has length 473 [2023-12-19 18:06:33,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:06:33,680 INFO L495 AbstractCegarLoop]: Abstraction has 476 states and 479 transitions. [2023-12-19 18:06:33,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 238 states, 238 states have (on average 3.3151260504201683) internal successors, (789), 238 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:06:33,680 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 479 transitions. [2023-12-19 18:06:33,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2023-12-19 18:06:33,682 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:06:33,682 INFO L195 NwaCegarLoop]: trace histogram [79, 78, 78, 77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 18:06:33,688 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Ended with exit code 0 [2023-12-19 18:06:33,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,93 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:06:33,887 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:06:33,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:06:33,888 INFO L85 PathProgramCache]: Analyzing trace with hash 988181463, now seen corresponding path program 93 times [2023-12-19 18:06:33,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:06:33,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648317358] [2023-12-19 18:06:33,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:06:33,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:06:34,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:06:40,454 INFO L134 CoverageAnalysis]: Checked inductivity of 18020 backedges. 6006 proven. 12014 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:06:40,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:06:40,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648317358] [2023-12-19 18:06:40,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648317358] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 18:06:40,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707331025] [2023-12-19 18:06:40,455 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-19 18:06:40,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:06:40,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:06:40,455 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 18:06:40,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2023-12-19 18:06:41,060 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 79 check-sat command(s) [2023-12-19 18:06:41,060 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 18:06:41,072 INFO L262 TraceCheckSpWp]: Trace formula consists of 1749 conjuncts, 162 conjunts are in the unsatisfiable core [2023-12-19 18:06:41,076 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:06:41,410 INFO L134 CoverageAnalysis]: Checked inductivity of 18020 backedges. 6162 proven. 11858 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:06:41,410 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 18:06:45,252 INFO L134 CoverageAnalysis]: Checked inductivity of 18020 backedges. 6162 proven. 11858 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:06:45,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707331025] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 18:06:45,253 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 18:06:45,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81, 81] total 84 [2023-12-19 18:06:45,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563486395] [2023-12-19 18:06:45,253 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 18:06:45,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2023-12-19 18:06:45,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:06:45,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2023-12-19 18:06:45,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3330, Invalid=3810, Unknown=0, NotChecked=0, Total=7140 [2023-12-19 18:06:45,255 INFO L87 Difference]: Start difference. First operand 476 states and 479 transitions. Second operand has 85 states, 85 states have (on average 5.858823529411764) internal successors, (498), 84 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:06:47,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:06:47,141 INFO L93 Difference]: Finished difference Result 493 states and 497 transitions. [2023-12-19 18:06:47,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2023-12-19 18:06:47,142 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 5.858823529411764) internal successors, (498), 84 states have internal predecessors, (498), 0 states have call successors, (0), 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 475 [2023-12-19 18:06:47,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:06:47,143 INFO L225 Difference]: With dead ends: 493 [2023-12-19 18:06:47,143 INFO L226 Difference]: Without dead ends: 491 [2023-12-19 18:06:47,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1186 GetRequests, 868 SyntacticMatches, 155 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13325 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=10049, Invalid=17011, Unknown=0, NotChecked=0, Total=27060 [2023-12-19 18:06:47,146 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 90 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 856 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 761 SdHoareTripleChecker+Invalid, 860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 18:06:47,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 761 Invalid, 860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 856 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 18:06:47,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2023-12-19 18:06:47,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 484. [2023-12-19 18:06:47,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 483 states have (on average 1.0082815734989647) internal successors, (487), 483 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:06:47,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 487 transitions. [2023-12-19 18:06:47,185 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 487 transitions. Word has length 475 [2023-12-19 18:06:47,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:06:47,185 INFO L495 AbstractCegarLoop]: Abstraction has 484 states and 487 transitions. [2023-12-19 18:06:47,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 5.858823529411764) internal successors, (498), 84 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:06:47,185 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 487 transitions. [2023-12-19 18:06:47,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2023-12-19 18:06:47,187 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:06:47,187 INFO L195 NwaCegarLoop]: trace histogram [80, 79, 79, 79, 79, 78, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 18:06:47,195 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Forceful destruction successful, exit code 0 [2023-12-19 18:06:47,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,94 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:06:47,395 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:06:47,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:06:47,396 INFO L85 PathProgramCache]: Analyzing trace with hash -502726979, now seen corresponding path program 94 times [2023-12-19 18:06:47,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:06:47,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769320464] [2023-12-19 18:06:47,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:06:47,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:06:47,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:06:56,342 INFO L134 CoverageAnalysis]: Checked inductivity of 18644 backedges. 12248 proven. 6396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:06:56,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:06:56,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769320464] [2023-12-19 18:06:56,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769320464] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 18:06:56,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761093769] [2023-12-19 18:06:56,342 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-19 18:06:56,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:06:56,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:06:56,343 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 18:06:56,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2023-12-19 18:06:56,607 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-19 18:06:56,607 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 18:06:56,617 INFO L262 TraceCheckSpWp]: Trace formula consists of 1773 conjuncts, 161 conjunts are in the unsatisfiable core [2023-12-19 18:06:56,621 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:07:04,417 INFO L134 CoverageAnalysis]: Checked inductivity of 18644 backedges. 12482 proven. 6162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:07:04,417 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 18:07:09,243 INFO L134 CoverageAnalysis]: Checked inductivity of 18644 backedges. 12482 proven. 6162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:07:09,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761093769] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 18:07:09,243 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 18:07:09,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [161, 161, 161] total 245 [2023-12-19 18:07:09,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522043740] [2023-12-19 18:07:09,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 18:07:09,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 245 states [2023-12-19 18:07:09,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:07:09,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 245 interpolants. [2023-12-19 18:07:09,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13450, Invalid=46330, Unknown=0, NotChecked=0, Total=59780 [2023-12-19 18:07:09,249 INFO L87 Difference]: Start difference. First operand 484 states and 487 transitions. Second operand has 245 states, 245 states have (on average 3.330612244897959) internal successors, (816), 245 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:07:19,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:07:19,332 INFO L93 Difference]: Finished difference Result 1446 states and 1611 transitions. [2023-12-19 18:07:19,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 241 states. [2023-12-19 18:07:19,333 INFO L78 Accepts]: Start accepts. Automaton has has 245 states, 245 states have (on average 3.330612244897959) internal successors, (816), 245 states have internal predecessors, (816), 0 states have call successors, (0), 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 483 [2023-12-19 18:07:19,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:07:19,334 INFO L225 Difference]: With dead ends: 1446 [2023-12-19 18:07:19,334 INFO L226 Difference]: Without dead ends: 808 [2023-12-19 18:07:19,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1284 GetRequests, 727 SyntacticMatches, 155 SemanticMatches, 402 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54964 ImplicationChecksByTransitivity, 20.4s TimeCoverageRelationStatistics Valid=39289, Invalid=123523, Unknown=0, NotChecked=0, Total=162812 [2023-12-19 18:07:19,343 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 1811 mSDsluCounter, 2795 mSDsCounter, 0 mSdLazyCounter, 3209 mSolverCounterSat, 493 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1811 SdHoareTripleChecker+Valid, 2956 SdHoareTripleChecker+Invalid, 3702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 493 IncrementalHoareTripleChecker+Valid, 3209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-19 18:07:19,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1811 Valid, 2956 Invalid, 3702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [493 Valid, 3209 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-19 18:07:19,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2023-12-19 18:07:19,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 488. [2023-12-19 18:07:19,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 487 states have (on average 1.0082135523613962) internal successors, (491), 487 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:07:19,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 491 transitions. [2023-12-19 18:07:19,386 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 491 transitions. Word has length 483 [2023-12-19 18:07:19,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:07:19,386 INFO L495 AbstractCegarLoop]: Abstraction has 488 states and 491 transitions. [2023-12-19 18:07:19,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 245 states, 245 states have (on average 3.330612244897959) internal successors, (816), 245 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:07:19,386 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 491 transitions. [2023-12-19 18:07:19,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2023-12-19 18:07:19,388 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:07:19,388 INFO L195 NwaCegarLoop]: trace histogram [81, 80, 80, 79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 18:07:19,395 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Ended with exit code 0 [2023-12-19 18:07:19,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable96 [2023-12-19 18:07:19,595 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:07:19,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:07:19,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1402716985, now seen corresponding path program 95 times [2023-12-19 18:07:19,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:07:19,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179085001] [2023-12-19 18:07:19,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:07:19,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:07:19,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:07:25,870 INFO L134 CoverageAnalysis]: Checked inductivity of 18962 backedges. 6320 proven. 12642 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:07:25,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:07:25,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179085001] [2023-12-19 18:07:25,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179085001] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 18:07:25,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752747238] [2023-12-19 18:07:25,871 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-19 18:07:25,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:07:25,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:07:25,872 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 18:07:25,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2023-12-19 18:07:26,349 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 81 check-sat command(s) [2023-12-19 18:07:26,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 18:07:26,360 INFO L262 TraceCheckSpWp]: Trace formula consists of 1793 conjuncts, 166 conjunts are in the unsatisfiable core [2023-12-19 18:07:26,365 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:07:26,627 INFO L134 CoverageAnalysis]: Checked inductivity of 18962 backedges. 6480 proven. 12482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:07:26,628 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 18:07:29,839 INFO L134 CoverageAnalysis]: Checked inductivity of 18962 backedges. 6480 proven. 12482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:07:29,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752747238] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 18:07:29,839 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 18:07:29,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83, 83] total 86 [2023-12-19 18:07:29,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374617825] [2023-12-19 18:07:29,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 18:07:29,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2023-12-19 18:07:29,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:07:29,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2023-12-19 18:07:29,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3495, Invalid=3987, Unknown=0, NotChecked=0, Total=7482 [2023-12-19 18:07:29,841 INFO L87 Difference]: Start difference. First operand 488 states and 491 transitions. Second operand has 87 states, 87 states have (on average 5.862068965517241) internal successors, (510), 86 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:07:31,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:07:31,199 INFO L93 Difference]: Finished difference Result 505 states and 509 transitions. [2023-12-19 18:07:31,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2023-12-19 18:07:31,200 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 5.862068965517241) internal successors, (510), 86 states have internal predecessors, (510), 0 states have call successors, (0), 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 487 [2023-12-19 18:07:31,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:07:31,201 INFO L225 Difference]: With dead ends: 505 [2023-12-19 18:07:31,201 INFO L226 Difference]: Without dead ends: 503 [2023-12-19 18:07:31,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1216 GetRequests, 890 SyntacticMatches, 159 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13987 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=10546, Invalid=17846, Unknown=0, NotChecked=0, Total=28392 [2023-12-19 18:07:31,204 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 177 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 835 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 722 SdHoareTripleChecker+Invalid, 839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 18:07:31,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 722 Invalid, 839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 835 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 18:07:31,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2023-12-19 18:07:31,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 496. [2023-12-19 18:07:31,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 495 states have (on average 1.0080808080808081) internal successors, (499), 495 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:07:31,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 499 transitions. [2023-12-19 18:07:31,244 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 499 transitions. Word has length 487 [2023-12-19 18:07:31,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:07:31,244 INFO L495 AbstractCegarLoop]: Abstraction has 496 states and 499 transitions. [2023-12-19 18:07:31,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 87 states have (on average 5.862068965517241) internal successors, (510), 86 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:07:31,244 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 499 transitions. [2023-12-19 18:07:31,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 496 [2023-12-19 18:07:31,246 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:07:31,246 INFO L195 NwaCegarLoop]: trace histogram [82, 81, 81, 81, 81, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 18:07:31,254 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Ended with exit code 0 [2023-12-19 18:07:31,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable97 [2023-12-19 18:07:31,454 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:07:31,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:07:31,454 INFO L85 PathProgramCache]: Analyzing trace with hash -43591763, now seen corresponding path program 96 times [2023-12-19 18:07:31,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:07:31,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639174563] [2023-12-19 18:07:31,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:07:31,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:07:31,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:07:41,334 INFO L134 CoverageAnalysis]: Checked inductivity of 19602 backedges. 12882 proven. 6720 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:07:41,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:07:41,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639174563] [2023-12-19 18:07:41,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639174563] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 18:07:41,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747347516] [2023-12-19 18:07:41,335 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-19 18:07:41,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:07:41,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:07:41,336 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 18:07:41,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2023-12-19 18:07:41,797 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 82 check-sat command(s) [2023-12-19 18:07:41,797 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 18:07:41,807 INFO L262 TraceCheckSpWp]: Trace formula consists of 1817 conjuncts, 165 conjunts are in the unsatisfiable core [2023-12-19 18:07:41,812 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:07:47,861 INFO L134 CoverageAnalysis]: Checked inductivity of 19602 backedges. 13122 proven. 6480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:07:47,862 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 18:07:52,381 INFO L134 CoverageAnalysis]: Checked inductivity of 19602 backedges. 13122 proven. 6480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:07:52,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747347516] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 18:07:52,382 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 18:07:52,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [165, 165, 165] total 251 [2023-12-19 18:07:52,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357194924] [2023-12-19 18:07:52,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 18:07:52,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 251 states [2023-12-19 18:07:52,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:07:52,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 251 interpolants. [2023-12-19 18:07:52,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14114, Invalid=48636, Unknown=0, NotChecked=0, Total=62750 [2023-12-19 18:07:52,389 INFO L87 Difference]: Start difference. First operand 496 states and 499 transitions. Second operand has 251 states, 251 states have (on average 3.3306772908366535) internal successors, (836), 251 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:08:02,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:08:02,862 INFO L93 Difference]: Finished difference Result 1482 states and 1651 transitions. [2023-12-19 18:08:02,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 247 states. [2023-12-19 18:08:02,862 INFO L78 Accepts]: Start accepts. Automaton has has 251 states, 251 states have (on average 3.3306772908366535) internal successors, (836), 251 states have internal predecessors, (836), 0 states have call successors, (0), 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 495 [2023-12-19 18:08:02,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:08:02,864 INFO L225 Difference]: With dead ends: 1482 [2023-12-19 18:08:02,864 INFO L226 Difference]: Without dead ends: 828 [2023-12-19 18:08:02,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1316 GetRequests, 745 SyntacticMatches, 159 SemanticMatches, 412 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57733 ImplicationChecksByTransitivity, 19.4s TimeCoverageRelationStatistics Valid=41255, Invalid=129727, Unknown=0, NotChecked=0, Total=170982 [2023-12-19 18:08:02,874 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 1779 mSDsluCounter, 2707 mSDsCounter, 0 mSdLazyCounter, 3138 mSolverCounterSat, 486 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1779 SdHoareTripleChecker+Valid, 2872 SdHoareTripleChecker+Invalid, 3624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 486 IncrementalHoareTripleChecker+Valid, 3138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-19 18:08:02,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1779 Valid, 2872 Invalid, 3624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [486 Valid, 3138 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-19 18:08:02,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2023-12-19 18:08:02,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 500. [2023-12-19 18:08:02,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 499 states have (on average 1.0080160320641283) internal successors, (503), 499 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:08:02,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 503 transitions. [2023-12-19 18:08:02,942 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 503 transitions. Word has length 495 [2023-12-19 18:08:02,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:08:02,942 INFO L495 AbstractCegarLoop]: Abstraction has 500 states and 503 transitions. [2023-12-19 18:08:02,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 251 states, 251 states have (on average 3.3306772908366535) internal successors, (836), 251 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:08:02,943 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 503 transitions. [2023-12-19 18:08:02,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2023-12-19 18:08:02,944 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:08:02,944 INFO L195 NwaCegarLoop]: trace histogram [83, 82, 82, 81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 18:08:02,954 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Forceful destruction successful, exit code 0 [2023-12-19 18:08:03,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,97 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:08:03,152 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:08:03,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:08:03,152 INFO L85 PathProgramCache]: Analyzing trace with hash 603150007, now seen corresponding path program 97 times [2023-12-19 18:08:03,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:08:03,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096062612] [2023-12-19 18:08:03,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:08:03,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:08:03,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:08:10,246 INFO L134 CoverageAnalysis]: Checked inductivity of 19928 backedges. 6642 proven. 13286 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:08:10,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:08:10,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096062612] [2023-12-19 18:08:10,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096062612] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 18:08:10,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790229677] [2023-12-19 18:08:10,246 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-19 18:08:10,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:08:10,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:08:10,247 INFO L229 MonitoredProcess]: Starting monitored process 98 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 18:08:10,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2023-12-19 18:08:10,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:08:10,536 INFO L262 TraceCheckSpWp]: Trace formula consists of 1837 conjuncts, 170 conjunts are in the unsatisfiable core [2023-12-19 18:08:10,541 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:08:10,813 INFO L134 CoverageAnalysis]: Checked inductivity of 19928 backedges. 6806 proven. 13122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:08:10,813 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 18:08:13,736 INFO L134 CoverageAnalysis]: Checked inductivity of 19928 backedges. 6806 proven. 13122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:08:13,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790229677] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 18:08:13,736 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 18:08:13,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85, 85] total 88 [2023-12-19 18:08:13,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786019166] [2023-12-19 18:08:13,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 18:08:13,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2023-12-19 18:08:13,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:08:13,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2023-12-19 18:08:13,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3664, Invalid=4168, Unknown=0, NotChecked=0, Total=7832 [2023-12-19 18:08:13,738 INFO L87 Difference]: Start difference. First operand 500 states and 503 transitions. Second operand has 89 states, 89 states have (on average 5.865168539325842) internal successors, (522), 88 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:08:15,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:08:15,103 INFO L93 Difference]: Finished difference Result 517 states and 521 transitions. [2023-12-19 18:08:15,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2023-12-19 18:08:15,103 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 5.865168539325842) internal successors, (522), 88 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 499 [2023-12-19 18:08:15,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:08:15,104 INFO L225 Difference]: With dead ends: 517 [2023-12-19 18:08:15,104 INFO L226 Difference]: Without dead ends: 515 [2023-12-19 18:08:15,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1246 GetRequests, 912 SyntacticMatches, 163 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14665 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=11055, Invalid=18701, Unknown=0, NotChecked=0, Total=29756 [2023-12-19 18:08:15,107 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 94 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 973 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 866 SdHoareTripleChecker+Invalid, 977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 18:08:15,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 866 Invalid, 977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 973 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 18:08:15,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2023-12-19 18:08:15,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 508. [2023-12-19 18:08:15,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 507 states have (on average 1.0078895463510849) internal successors, (511), 507 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:08:15,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 511 transitions. [2023-12-19 18:08:15,149 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 511 transitions. Word has length 499 [2023-12-19 18:08:15,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:08:15,149 INFO L495 AbstractCegarLoop]: Abstraction has 508 states and 511 transitions. [2023-12-19 18:08:15,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 5.865168539325842) internal successors, (522), 88 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:08:15,149 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 511 transitions. [2023-12-19 18:08:15,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2023-12-19 18:08:15,151 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:08:15,151 INFO L195 NwaCegarLoop]: trace histogram [84, 83, 83, 83, 83, 82, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 18:08:15,158 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Forceful destruction successful, exit code 0 [2023-12-19 18:08:15,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,98 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:08:15,358 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:08:15,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:08:15,359 INFO L85 PathProgramCache]: Analyzing trace with hash 620036509, now seen corresponding path program 98 times [2023-12-19 18:08:15,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:08:15,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150831695] [2023-12-19 18:08:15,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:08:15,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:08:15,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:08:26,147 INFO L134 CoverageAnalysis]: Checked inductivity of 20584 backedges. 13532 proven. 7052 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:08:26,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:08:26,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150831695] [2023-12-19 18:08:26,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150831695] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 18:08:26,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050891574] [2023-12-19 18:08:26,147 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-19 18:08:26,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:08:26,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:08:26,149 INFO L229 MonitoredProcess]: Starting monitored process 99 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 18:08:26,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2023-12-19 18:08:26,443 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-19 18:08:26,443 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 18:08:26,451 INFO L262 TraceCheckSpWp]: Trace formula consists of 1861 conjuncts, 168 conjunts are in the unsatisfiable core [2023-12-19 18:08:26,456 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:08:32,462 INFO L134 CoverageAnalysis]: Checked inductivity of 20584 backedges. 13776 proven. 6806 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 18:08:32,462 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 18:08:37,124 INFO L134 CoverageAnalysis]: Checked inductivity of 20584 backedges. 13776 proven. 6806 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 18:08:37,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1050891574] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 18:08:37,125 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 18:08:37,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [169, 168, 168] total 254 [2023-12-19 18:08:37,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038677619] [2023-12-19 18:08:37,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 18:08:37,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 254 states [2023-12-19 18:08:37,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 18:08:37,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 254 interpolants. [2023-12-19 18:08:37,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14368, Invalid=49894, Unknown=0, NotChecked=0, Total=64262 [2023-12-19 18:08:37,131 INFO L87 Difference]: Start difference. First operand 508 states and 511 transitions. Second operand has 254 states, 254 states have (on average 3.3346456692913384) internal successors, (847), 254 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:08:43,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 18:08:43,651 INFO L93 Difference]: Finished difference Result 1179 states and 1349 transitions. [2023-12-19 18:08:43,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2023-12-19 18:08:43,652 INFO L78 Accepts]: Start accepts. Automaton has has 254 states, 254 states have (on average 3.3346456692913384) internal successors, (847), 254 states have internal predecessors, (847), 0 states have call successors, (0), 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 507 [2023-12-19 18:08:43,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 18:08:43,653 INFO L225 Difference]: With dead ends: 1179 [2023-12-19 18:08:43,653 INFO L226 Difference]: Without dead ends: 842 [2023-12-19 18:08:43,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1264 GetRequests, 765 SyntacticMatches, 164 SemanticMatches, 335 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42471 ImplicationChecksByTransitivity, 17.4s TimeCoverageRelationStatistics Valid=28314, Invalid=84918, Unknown=0, NotChecked=0, Total=113232 [2023-12-19 18:08:43,661 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 1302 mSDsluCounter, 2081 mSDsCounter, 0 mSdLazyCounter, 2496 mSolverCounterSat, 347 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1302 SdHoareTripleChecker+Valid, 2250 SdHoareTripleChecker+Invalid, 2843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 347 IncrementalHoareTripleChecker+Valid, 2496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 18:08:43,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1302 Valid, 2250 Invalid, 2843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [347 Valid, 2496 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 18:08:43,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2023-12-19 18:08:43,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 510. [2023-12-19 18:08:43,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 510 states, 509 states have (on average 1.0078585461689586) internal successors, (513), 509 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:08:43,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 513 transitions. [2023-12-19 18:08:43,735 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 513 transitions. Word has length 507 [2023-12-19 18:08:43,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 18:08:43,735 INFO L495 AbstractCegarLoop]: Abstraction has 510 states and 513 transitions. [2023-12-19 18:08:43,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 254 states, 254 states have (on average 3.3346456692913384) internal successors, (847), 254 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 18:08:43,736 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 513 transitions. [2023-12-19 18:08:43,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2023-12-19 18:08:43,737 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 18:08:43,737 INFO L195 NwaCegarLoop]: trace histogram [84, 84, 83, 83, 83, 83, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 18:08:43,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Forceful destruction successful, exit code 0 [2023-12-19 18:08:43,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2023-12-19 18:08:43,945 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 18:08:43,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 18:08:43,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1076417470, now seen corresponding path program 99 times [2023-12-19 18:08:43,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 18:08:43,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605998801] [2023-12-19 18:08:43,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 18:08:43,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 18:08:44,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 18:08:54,326 INFO L134 CoverageAnalysis]: Checked inductivity of 20750 backedges. 13532 proven. 7218 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 18:08:54,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 18:08:54,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605998801] [2023-12-19 18:08:54,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605998801] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 18:08:54,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883985973] [2023-12-19 18:08:54,327 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-19 18:08:54,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:08:54,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 18:08:54,328 INFO L229 MonitoredProcess]: Starting monitored process 100 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 18:08:54,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process Received shutdown request... [2023-12-19 18:08:54,545 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 18:08:54,581 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 18:08:54,842 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 84 check-sat command(s) [2023-12-19 18:08:54,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 18:08:54,853 INFO L262 TraceCheckSpWp]: Trace formula consists of 1871 conjuncts, 170 conjunts are in the unsatisfiable core [2023-12-19 18:08:54,858 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 18:08:54,861 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-19 18:08:54,895 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Forceful destruction successful, exit code 0 [2023-12-19 18:08:55,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101,100 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 18:08:55,062 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 510 with TraceHistMax 84,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 170 known predicates. [2023-12-19 18:08:55,065 INFO L445 BasicCegarLoop]: Path program histogram: [99, 1, 1, 1] [2023-12-19 18:08:55,067 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-19 18:08:55,068 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 06:08:55 BoogieIcfgContainer [2023-12-19 18:08:55,068 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-19 18:08:55,069 INFO L158 Benchmark]: Toolchain (without parser) took 871758.43ms. Allocated memory was 245.4MB in the beginning and 1.3GB in the end (delta: 1.0GB). Free memory was 193.7MB in the beginning and 827.1MB in the end (delta: -633.4MB). Peak memory consumption was 413.6MB. Max. memory is 8.0GB. [2023-12-19 18:08:55,069 INFO L158 Benchmark]: CDTParser took 0.46ms. Allocated memory is still 168.8MB. Free memory is still 117.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 18:08:55,069 INFO L158 Benchmark]: CACSL2BoogieTranslator took 156.83ms. Allocated memory is still 245.4MB. Free memory was 193.7MB in the beginning and 182.7MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-19 18:08:55,069 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.24ms. Allocated memory is still 245.4MB. Free memory was 182.7MB in the beginning and 181.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-19 18:08:55,069 INFO L158 Benchmark]: Boogie Preprocessor took 21.19ms. Allocated memory is still 245.4MB. Free memory was 181.1MB in the beginning and 179.5MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-19 18:08:55,069 INFO L158 Benchmark]: RCFGBuilder took 257.14ms. Allocated memory is still 245.4MB. Free memory was 179.5MB in the beginning and 169.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-19 18:08:55,069 INFO L158 Benchmark]: TraceAbstraction took 871297.89ms. Allocated memory was 245.4MB in the beginning and 1.3GB in the end (delta: 1.0GB). Free memory was 168.0MB in the beginning and 827.1MB in the end (delta: -659.1MB). Peak memory consumption was 388.4MB. Max. memory is 8.0GB. [2023-12-19 18:08:55,070 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.46ms. Allocated memory is still 168.8MB. Free memory is still 117.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 156.83ms. Allocated memory is still 245.4MB. Free memory was 193.7MB in the beginning and 182.7MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 21.24ms. Allocated memory is still 245.4MB. Free memory was 182.7MB in the beginning and 181.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 21.19ms. Allocated memory is still 245.4MB. Free memory was 181.1MB in the beginning and 179.5MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 257.14ms. Allocated memory is still 245.4MB. Free memory was 179.5MB in the beginning and 169.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 871297.89ms. Allocated memory was 245.4MB in the beginning and 1.3GB in the end (delta: 1.0GB). Free memory was 168.0MB in the beginning and 827.1MB in the end (delta: -659.1MB). Peak memory consumption was 388.4MB. Max. memory is 8.0GB. * 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 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 510 with TraceHistMax 84,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 170 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 871.3s, OverallIterations: 102, TraceHistogramMax: 84, PathProgramHistogramMax: 99, EmptinessCheckTime: 0.1s, AutomataDifference: 187.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 47458 SdHoareTripleChecker+Valid, 34.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 47458 mSDsluCounter, 86685 SdHoareTripleChecker+Invalid, 28.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 79434 mSDsCounter, 12201 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 96118 IncrementalHoareTripleChecker+Invalid, 108319 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12201 mSolverCounterUnsat, 7251 mSDtfsCounter, 96118 mSolverCounterSat, 0.5s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 64790 GetRequests, 41965 SyntacticMatches, 8101 SemanticMatches, 14724 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1206150 ImplicationChecksByTransitivity, 511.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=510occurred in iteration=101, InterpolantAutomatonStates: 9838, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.8s AutomataMinimizationTime, 101 MinimizatonAttempts, 10067 StatesRemovedByMinimization, 100 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 3.1s SsaConstructionTime, 20.0s SatisfiabilityAnalysisTime, 624.1s InterpolantComputationTime, 51187 NumberOfCodeBlocks, 51187 NumberOfCodeBlocksAsserted, 2256 NumberOfCheckSat, 76466 ConstructedInterpolants, 0 QuantifiedInterpolants, 303409 SizeOfPredicates, 254 NumberOfNonLiveVariables, 94236 ConjunctsInSsa, 8662 ConjunctsInUnsatCore, 297 InterpolantComputations, 3 PerfectInterpolantSequences, 1077496/2034392 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 RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown