/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/recursive/recHanoi01.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 23:41:20,602 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 23:41:20,642 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 23:41:20,644 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 23:41:20,645 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 23:41:20,658 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 23:41:20,658 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 23:41:20,659 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 23:41:20,659 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 23:41:20,659 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 23:41:20,659 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 23:41:20,660 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 23:41:20,660 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 23:41:20,660 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 23:41:20,661 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 23:41:20,661 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 23:41:20,661 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 23:41:20,661 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 23:41:20,661 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 23:41:20,662 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 23:41:20,662 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 23:41:20,662 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 23:41:20,662 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 23:41:20,663 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 23:41:20,663 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 23:41:20,663 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 23:41:20,663 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 23:41:20,664 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 23:41:20,664 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 23:41:20,664 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 23:41:20,664 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 23:41:20,664 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 23:41:20,665 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 23:41:20,665 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 23:41:20,665 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 23:41:20,665 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 23:41:20,666 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 23:41:20,666 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 23:41:20,666 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 23:41:20,666 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 23:41:20,666 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 23:41:20,667 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 23:41:20,667 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 23:41:20,667 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 23:41:20,833 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 23:41:20,848 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 23:41:20,852 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 23:41:20,853 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 23:41:20,853 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 23:41:20,854 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/recHanoi01.c [2023-12-19 23:41:21,888 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 23:41:22,026 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 23:41:22,026 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/recHanoi01.c [2023-12-19 23:41:22,031 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c580a80f1/8c88f6ba56a14b39a21f42e41df2ded3/FLAG7a0e0f623 [2023-12-19 23:41:22,040 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c580a80f1/8c88f6ba56a14b39a21f42e41df2ded3 [2023-12-19 23:41:22,042 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 23:41:22,044 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 23:41:22,046 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 23:41:22,046 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 23:41:22,049 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 23:41:22,050 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 11:41:22" (1/1) ... [2023-12-19 23:41:22,051 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e0eac1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:41:22, skipping insertion in model container [2023-12-19 23:41:22,051 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 11:41:22" (1/1) ... [2023-12-19 23:41:22,065 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 23:41:22,171 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive/recHanoi01.c[1213,1226] [2023-12-19 23:41:22,174 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 23:41:22,181 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 23:41:22,198 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive/recHanoi01.c[1213,1226] [2023-12-19 23:41:22,198 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 23:41:22,209 INFO L206 MainTranslator]: Completed translation [2023-12-19 23:41:22,210 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:41:22 WrapperNode [2023-12-19 23:41:22,210 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 23:41:22,211 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 23:41:22,211 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 23:41:22,211 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 23:41:22,215 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:41:22" (1/1) ... [2023-12-19 23:41:22,220 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:41:22" (1/1) ... [2023-12-19 23:41:22,231 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 29 [2023-12-19 23:41:22,232 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 23:41:22,232 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 23:41:22,235 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 23:41:22,235 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 23:41:22,242 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:41:22" (1/1) ... [2023-12-19 23:41:22,242 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:41:22" (1/1) ... [2023-12-19 23:41:22,243 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:41:22" (1/1) ... [2023-12-19 23:41:22,251 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 23:41:22,251 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:41:22" (1/1) ... [2023-12-19 23:41:22,251 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:41:22" (1/1) ... [2023-12-19 23:41:22,253 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:41:22" (1/1) ... [2023-12-19 23:41:22,254 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:41:22" (1/1) ... [2023-12-19 23:41:22,255 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:41:22" (1/1) ... [2023-12-19 23:41:22,255 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:41:22" (1/1) ... [2023-12-19 23:41:22,256 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 23:41:22,257 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 23:41:22,257 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 23:41:22,257 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 23:41:22,258 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:41:22" (1/1) ... [2023-12-19 23:41:22,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 23:41:22,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:41:22,297 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 23:41:22,305 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 23:41:22,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 23:41:22,321 INFO L130 BoogieDeclarations]: Found specification of procedure applyHanoi [2023-12-19 23:41:22,322 INFO L138 BoogieDeclarations]: Found implementation of procedure applyHanoi [2023-12-19 23:41:22,322 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2023-12-19 23:41:22,322 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2023-12-19 23:41:22,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 23:41:22,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 23:41:22,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 23:41:22,375 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 23:41:22,377 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 23:41:22,479 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 23:41:22,496 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 23:41:22,496 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-19 23:41:22,496 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 11:41:22 BoogieIcfgContainer [2023-12-19 23:41:22,496 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 23:41:22,498 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 23:41:22,498 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 23:41:22,500 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 23:41:22,500 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 11:41:22" (1/3) ... [2023-12-19 23:41:22,500 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@362d3f8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 11:41:22, skipping insertion in model container [2023-12-19 23:41:22,500 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:41:22" (2/3) ... [2023-12-19 23:41:22,500 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@362d3f8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 11:41:22, skipping insertion in model container [2023-12-19 23:41:22,501 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 11:41:22" (3/3) ... [2023-12-19 23:41:22,501 INFO L112 eAbstractionObserver]: Analyzing ICFG recHanoi01.c [2023-12-19 23:41:22,513 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 23:41:22,513 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 23:41:22,555 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 23:41:22,560 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;@255c43c7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 23:41:22,560 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 23:41:22,563 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 15 states have internal predecessors, (18), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-19 23:41:22,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-19 23:41:22,572 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:41:22,572 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:41:22,573 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:41:22,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:41:22,576 INFO L85 PathProgramCache]: Analyzing trace with hash -432663240, now seen corresponding path program 1 times [2023-12-19 23:41:22,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:41:22,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848971034] [2023-12-19 23:41:22,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:41:22,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:41:22,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:22,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:22,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:22,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:41:22,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:22,787 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 23:41:22,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:41:22,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848971034] [2023-12-19 23:41:22,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848971034] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:41:22,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:41:22,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 23:41:22,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445274842] [2023-12-19 23:41:22,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:41:22,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 23:41:22,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:41:22,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 23:41:22,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 23:41:22,817 INFO L87 Difference]: Start difference. First operand has 22 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 15 states have internal predecessors, (18), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-19 23:41:22,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:41:22,968 INFO L93 Difference]: Finished difference Result 38 states and 48 transitions. [2023-12-19 23:41:22,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 23:41:22,985 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 15 [2023-12-19 23:41:22,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:41:22,990 INFO L225 Difference]: With dead ends: 38 [2023-12-19 23:41:22,990 INFO L226 Difference]: Without dead ends: 22 [2023-12-19 23:41:22,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-19 23:41:22,994 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 17 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 23:41:22,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 36 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 23:41:23,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-12-19 23:41:23,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-12-19 23:41:23,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2023-12-19 23:41:23,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2023-12-19 23:41:23,020 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 15 [2023-12-19 23:41:23,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:41:23,020 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2023-12-19 23:41:23,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-19 23:41:23,020 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2023-12-19 23:41:23,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-19 23:41:23,021 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:41:23,022 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:41:23,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 23:41:23,022 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:41:23,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:41:23,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1422071395, now seen corresponding path program 1 times [2023-12-19 23:41:23,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:41:23,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513428971] [2023-12-19 23:41:23,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:41:23,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:41:23,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:23,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:23,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:23,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:23,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:23,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:41:23,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:23,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 23:41:23,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:23,337 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-19 23:41:23,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:41:23,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513428971] [2023-12-19 23:41:23,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513428971] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:41:23,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [362725220] [2023-12-19 23:41:23,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:41:23,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:41:23,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:41:23,341 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 23:41:23,354 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 23:41:23,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:23,404 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-19 23:41:23,409 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:41:23,531 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-19 23:41:23,531 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 23:41:23,715 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 23:41:23,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [362725220] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 23:41:23,716 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 23:41:23,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 17 [2023-12-19 23:41:23,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317730926] [2023-12-19 23:41:23,718 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 23:41:23,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-19 23:41:23,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:41:23,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-19 23:41:23,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2023-12-19 23:41:23,721 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand has 17 states, 16 states have (on average 1.75) internal successors, (28), 15 states have internal predecessors, (28), 4 states have call successors, (10), 5 states have call predecessors, (10), 7 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2023-12-19 23:41:24,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:41:24,004 INFO L93 Difference]: Finished difference Result 73 states and 103 transitions. [2023-12-19 23:41:24,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-19 23:41:24,005 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.75) internal successors, (28), 15 states have internal predecessors, (28), 4 states have call successors, (10), 5 states have call predecessors, (10), 7 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) Word has length 25 [2023-12-19 23:41:24,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:41:24,007 INFO L225 Difference]: With dead ends: 73 [2023-12-19 23:41:24,007 INFO L226 Difference]: Without dead ends: 67 [2023-12-19 23:41:24,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=130, Invalid=520, Unknown=0, NotChecked=0, Total=650 [2023-12-19 23:41:24,009 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 49 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 23:41:24,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 96 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 23:41:24,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2023-12-19 23:41:24,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 56. [2023-12-19 23:41:24,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 33 states have internal predecessors, (35), 14 states have call successors, (14), 6 states have call predecessors, (14), 11 states have return successors, (33), 16 states have call predecessors, (33), 14 states have call successors, (33) [2023-12-19 23:41:24,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 82 transitions. [2023-12-19 23:41:24,021 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 82 transitions. Word has length 25 [2023-12-19 23:41:24,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:41:24,022 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 82 transitions. [2023-12-19 23:41:24,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.75) internal successors, (28), 15 states have internal predecessors, (28), 4 states have call successors, (10), 5 states have call predecessors, (10), 7 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2023-12-19 23:41:24,022 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 82 transitions. [2023-12-19 23:41:24,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-19 23:41:24,023 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:41:24,023 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:41:24,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 23:41:24,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:41:24,230 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:41:24,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:41:24,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1071008002, now seen corresponding path program 2 times [2023-12-19 23:41:24,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:41:24,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637777504] [2023-12-19 23:41:24,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:41:24,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:41:24,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:24,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:24,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:24,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:24,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:24,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:41:24,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:24,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:24,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:24,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:41:24,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:24,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-19 23:41:24,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:24,448 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 15 proven. 13 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-19 23:41:24,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:41:24,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637777504] [2023-12-19 23:41:24,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637777504] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:41:24,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400191578] [2023-12-19 23:41:24,452 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-19 23:41:24,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:41:24,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:41:24,453 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 23:41:24,484 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 23:41:24,511 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-19 23:41:24,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 23:41:24,512 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-19 23:41:24,514 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:41:24,592 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-19 23:41:24,592 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 23:41:24,841 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 18 proven. 11 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-19 23:41:24,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [400191578] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 23:41:24,842 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 23:41:24,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 11] total 18 [2023-12-19 23:41:24,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809252370] [2023-12-19 23:41:24,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 23:41:24,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-19 23:41:24,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:41:24,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-19 23:41:24,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2023-12-19 23:41:24,844 INFO L87 Difference]: Start difference. First operand 56 states and 82 transitions. Second operand has 18 states, 16 states have (on average 2.25) internal successors, (36), 15 states have internal predecessors, (36), 9 states have call successors, (14), 2 states have call predecessors, (14), 7 states have return successors, (14), 7 states have call predecessors, (14), 9 states have call successors, (14) [2023-12-19 23:41:25,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:41:25,077 INFO L93 Difference]: Finished difference Result 107 states and 168 transitions. [2023-12-19 23:41:25,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-19 23:41:25,077 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.25) internal successors, (36), 15 states have internal predecessors, (36), 9 states have call successors, (14), 2 states have call predecessors, (14), 7 states have return successors, (14), 7 states have call predecessors, (14), 9 states have call successors, (14) Word has length 35 [2023-12-19 23:41:25,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:41:25,079 INFO L225 Difference]: With dead ends: 107 [2023-12-19 23:41:25,079 INFO L226 Difference]: Without dead ends: 73 [2023-12-19 23:41:25,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 69 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=177, Invalid=693, Unknown=0, NotChecked=0, Total=870 [2023-12-19 23:41:25,080 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 31 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 23:41:25,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 118 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 23:41:25,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-12-19 23:41:25,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 54. [2023-12-19 23:41:25,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 33 states have (on average 1.121212121212121) internal successors, (37), 32 states have internal predecessors, (37), 11 states have call successors, (11), 9 states have call predecessors, (11), 9 states have return successors, (20), 12 states have call predecessors, (20), 11 states have call successors, (20) [2023-12-19 23:41:25,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 68 transitions. [2023-12-19 23:41:25,089 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 68 transitions. Word has length 35 [2023-12-19 23:41:25,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:41:25,089 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 68 transitions. [2023-12-19 23:41:25,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.25) internal successors, (36), 15 states have internal predecessors, (36), 9 states have call successors, (14), 2 states have call predecessors, (14), 7 states have return successors, (14), 7 states have call predecessors, (14), 9 states have call successors, (14) [2023-12-19 23:41:25,090 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 68 transitions. [2023-12-19 23:41:25,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-19 23:41:25,091 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:41:25,091 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:41:25,098 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 23:41:25,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-12-19 23:41:25,296 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:41:25,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:41:25,296 INFO L85 PathProgramCache]: Analyzing trace with hash -877477481, now seen corresponding path program 1 times [2023-12-19 23:41:25,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:41:25,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859786839] [2023-12-19 23:41:25,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:41:25,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:41:25,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:25,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:25,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:25,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:25,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:25,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:41:25,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:25,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 23:41:25,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:25,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:25,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:25,429 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 23:41:25,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:41:25,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859786839] [2023-12-19 23:41:25,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859786839] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:41:25,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033682378] [2023-12-19 23:41:25,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:41:25,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:41:25,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:41:25,434 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 23:41:25,439 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 23:41:25,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:25,481 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-19 23:41:25,483 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:41:25,536 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-19 23:41:25,536 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 23:41:25,720 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 23:41:25,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033682378] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 23:41:25,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 23:41:25,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 11] total 20 [2023-12-19 23:41:25,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695340087] [2023-12-19 23:41:25,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 23:41:25,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-19 23:41:25,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:41:25,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-19 23:41:25,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2023-12-19 23:41:25,722 INFO L87 Difference]: Start difference. First operand 54 states and 68 transitions. Second operand has 20 states, 19 states have (on average 2.0) internal successors, (38), 18 states have internal predecessors, (38), 9 states have call successors, (11), 2 states have call predecessors, (11), 7 states have return successors, (9), 4 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-19 23:41:25,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:41:25,865 INFO L93 Difference]: Finished difference Result 61 states and 75 transitions. [2023-12-19 23:41:25,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-19 23:41:25,866 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.0) internal successors, (38), 18 states have internal predecessors, (38), 9 states have call successors, (11), 2 states have call predecessors, (11), 7 states have return successors, (9), 4 states have call predecessors, (9), 9 states have call successors, (9) Word has length 31 [2023-12-19 23:41:25,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:41:25,869 INFO L225 Difference]: With dead ends: 61 [2023-12-19 23:41:25,869 INFO L226 Difference]: Without dead ends: 49 [2023-12-19 23:41:25,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 55 SyntacticMatches, 5 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=149, Invalid=607, Unknown=0, NotChecked=0, Total=756 [2023-12-19 23:41:25,871 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 30 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 23:41:25,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 65 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 23:41:25,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-12-19 23:41:25,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2023-12-19 23:41:25,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 29 states have (on average 1.103448275862069) internal successors, (32), 28 states have internal predecessors, (32), 10 states have call successors, (10), 8 states have call predecessors, (10), 7 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) [2023-12-19 23:41:25,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 59 transitions. [2023-12-19 23:41:25,887 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 59 transitions. Word has length 31 [2023-12-19 23:41:25,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:41:25,888 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 59 transitions. [2023-12-19 23:41:25,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.0) internal successors, (38), 18 states have internal predecessors, (38), 9 states have call successors, (11), 2 states have call predecessors, (11), 7 states have return successors, (9), 4 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-19 23:41:25,888 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 59 transitions. [2023-12-19 23:41:25,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-19 23:41:25,895 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:41:25,896 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:41:25,914 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 23:41:26,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:41:26,103 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:41:26,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:41:26,103 INFO L85 PathProgramCache]: Analyzing trace with hash -921128009, now seen corresponding path program 2 times [2023-12-19 23:41:26,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:41:26,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878487989] [2023-12-19 23:41:26,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:41:26,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:41:26,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:26,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:26,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:26,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:26,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:26,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:26,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:26,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:41:26,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:26,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 23:41:26,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:26,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:26,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:26,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:41:26,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:26,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 23:41:26,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:26,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:26,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:26,481 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 8 proven. 34 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-12-19 23:41:26,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:41:26,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878487989] [2023-12-19 23:41:26,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878487989] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:41:26,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929299379] [2023-12-19 23:41:26,481 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-19 23:41:26,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:41:26,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:41:26,482 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 23:41:26,511 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 23:41:26,546 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-19 23:41:26,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 23:41:26,548 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 47 conjunts are in the unsatisfiable core [2023-12-19 23:41:26,551 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:41:26,667 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-12-19 23:41:26,668 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 23:41:27,030 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-19 23:41:27,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [929299379] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 23:41:27,030 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 23:41:27,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13, 18] total 33 [2023-12-19 23:41:27,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329408364] [2023-12-19 23:41:27,031 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 23:41:27,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-19 23:41:27,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:41:27,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-19 23:41:27,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=933, Unknown=0, NotChecked=0, Total=1056 [2023-12-19 23:41:27,032 INFO L87 Difference]: Start difference. First operand 47 states and 59 transitions. Second operand has 33 states, 29 states have (on average 1.6206896551724137) internal successors, (47), 26 states have internal predecessors, (47), 9 states have call successors, (17), 7 states have call predecessors, (17), 16 states have return successors, (22), 15 states have call predecessors, (22), 9 states have call successors, (22) [2023-12-19 23:41:27,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:41:27,666 INFO L93 Difference]: Finished difference Result 100 states and 138 transitions. [2023-12-19 23:41:27,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-12-19 23:41:27,667 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 29 states have (on average 1.6206896551724137) internal successors, (47), 26 states have internal predecessors, (47), 9 states have call successors, (17), 7 states have call predecessors, (17), 16 states have return successors, (22), 15 states have call predecessors, (22), 9 states have call successors, (22) Word has length 51 [2023-12-19 23:41:27,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:41:27,668 INFO L225 Difference]: With dead ends: 100 [2023-12-19 23:41:27,668 INFO L226 Difference]: Without dead ends: 96 [2023-12-19 23:41:27,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 692 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=429, Invalid=2651, Unknown=0, NotChecked=0, Total=3080 [2023-12-19 23:41:27,670 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 143 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 23:41:27,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 149 Invalid, 676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 23:41:27,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2023-12-19 23:41:27,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 79. [2023-12-19 23:41:27,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 44 states have (on average 1.0909090909090908) internal successors, (48), 44 states have internal predecessors, (48), 18 states have call successors, (18), 10 states have call predecessors, (18), 16 states have return successors, (44), 24 states have call predecessors, (44), 18 states have call successors, (44) [2023-12-19 23:41:27,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 110 transitions. [2023-12-19 23:41:27,680 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 110 transitions. Word has length 51 [2023-12-19 23:41:27,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:41:27,680 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 110 transitions. [2023-12-19 23:41:27,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 29 states have (on average 1.6206896551724137) internal successors, (47), 26 states have internal predecessors, (47), 9 states have call successors, (17), 7 states have call predecessors, (17), 16 states have return successors, (22), 15 states have call predecessors, (22), 9 states have call successors, (22) [2023-12-19 23:41:27,680 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 110 transitions. [2023-12-19 23:41:27,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-19 23:41:27,681 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:41:27,682 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:41:27,687 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 23:41:27,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:41:27,887 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:41:27,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:41:27,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1011273987, now seen corresponding path program 3 times [2023-12-19 23:41:27,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:41:27,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969600099] [2023-12-19 23:41:27,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:41:27,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:41:27,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:27,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:27,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:27,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:27,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:28,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:28,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:28,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:41:28,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:28,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 23:41:28,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:28,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:28,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:28,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:41:28,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:28,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 23:41:28,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:28,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:28,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:28,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:28,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:28,084 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 13 proven. 45 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-12-19 23:41:28,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:41:28,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969600099] [2023-12-19 23:41:28,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969600099] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:41:28,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209065134] [2023-12-19 23:41:28,084 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-19 23:41:28,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:41:28,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:41:28,086 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 23:41:28,126 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 23:41:28,146 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-12-19 23:41:28,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 23:41:28,147 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-19 23:41:28,149 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:41:28,210 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 41 proven. 12 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-12-19 23:41:28,211 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 23:41:28,584 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 41 proven. 21 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-19 23:41:28,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1209065134] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 23:41:28,585 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 23:41:28,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 15] total 24 [2023-12-19 23:41:28,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283750095] [2023-12-19 23:41:28,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 23:41:28,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-19 23:41:28,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:41:28,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-19 23:41:28,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=459, Unknown=0, NotChecked=0, Total=552 [2023-12-19 23:41:28,587 INFO L87 Difference]: Start difference. First operand 79 states and 110 transitions. Second operand has 24 states, 23 states have (on average 2.0) internal successors, (46), 22 states have internal predecessors, (46), 12 states have call successors, (20), 2 states have call predecessors, (20), 9 states have return successors, (21), 10 states have call predecessors, (21), 12 states have call successors, (21) [2023-12-19 23:41:28,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:41:28,825 INFO L93 Difference]: Finished difference Result 141 states and 219 transitions. [2023-12-19 23:41:28,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-19 23:41:28,826 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.0) internal successors, (46), 22 states have internal predecessors, (46), 12 states have call successors, (20), 2 states have call predecessors, (20), 9 states have return successors, (21), 10 states have call predecessors, (21), 12 states have call successors, (21) Word has length 57 [2023-12-19 23:41:28,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:41:28,827 INFO L225 Difference]: With dead ends: 141 [2023-12-19 23:41:28,827 INFO L226 Difference]: Without dead ends: 75 [2023-12-19 23:41:28,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 112 SyntacticMatches, 7 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=254, Invalid=1078, Unknown=0, NotChecked=0, Total=1332 [2023-12-19 23:41:28,828 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 30 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 23:41:28,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 113 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 23:41:28,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-12-19 23:41:28,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 65. [2023-12-19 23:41:28,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 35 states have internal predecessors, (37), 17 states have call successors, (17), 8 states have call predecessors, (17), 12 states have return successors, (35), 21 states have call predecessors, (35), 17 states have call successors, (35) [2023-12-19 23:41:28,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 89 transitions. [2023-12-19 23:41:28,836 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 89 transitions. Word has length 57 [2023-12-19 23:41:28,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:41:28,836 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 89 transitions. [2023-12-19 23:41:28,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.0) internal successors, (46), 22 states have internal predecessors, (46), 12 states have call successors, (20), 2 states have call predecessors, (20), 9 states have return successors, (21), 10 states have call predecessors, (21), 12 states have call successors, (21) [2023-12-19 23:41:28,837 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 89 transitions. [2023-12-19 23:41:28,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-19 23:41:28,838 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:41:28,838 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 6, 5, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:41:28,845 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 23:41:29,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:41:29,043 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:41:29,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:41:29,044 INFO L85 PathProgramCache]: Analyzing trace with hash 656684695, now seen corresponding path program 4 times [2023-12-19 23:41:29,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:41:29,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822959057] [2023-12-19 23:41:29,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:41:29,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:41:29,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:29,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:29,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:29,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:29,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:29,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:29,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:29,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:29,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:29,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:41:29,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:29,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 23:41:29,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:29,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:29,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:29,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:41:29,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:29,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 23:41:29,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:29,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:29,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:29,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:41:29,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:29,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-19 23:41:29,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:29,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:29,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:29,226 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 71 proven. 69 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2023-12-19 23:41:29,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:41:29,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822959057] [2023-12-19 23:41:29,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822959057] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:41:29,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269835444] [2023-12-19 23:41:29,227 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-19 23:41:29,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:41:29,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:41:29,228 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 23:41:29,232 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 23:41:29,288 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-19 23:41:29,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 23:41:29,290 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-19 23:41:29,292 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:41:29,338 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 74 proven. 70 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-12-19 23:41:29,339 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 23:41:29,682 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 74 proven. 75 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-12-19 23:41:29,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269835444] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 23:41:29,683 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 23:41:29,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 13] total 19 [2023-12-19 23:41:29,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49511386] [2023-12-19 23:41:29,683 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 23:41:29,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-19 23:41:29,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:41:29,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-19 23:41:29,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2023-12-19 23:41:29,684 INFO L87 Difference]: Start difference. First operand 65 states and 89 transitions. Second operand has 19 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 12 states have call successors, (24), 3 states have call predecessors, (24), 8 states have return successors, (21), 6 states have call predecessors, (21), 12 states have call successors, (21) [2023-12-19 23:41:29,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:41:29,847 INFO L93 Difference]: Finished difference Result 118 states and 175 transitions. [2023-12-19 23:41:29,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-19 23:41:29,847 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 12 states have call successors, (24), 3 states have call predecessors, (24), 8 states have return successors, (21), 6 states have call predecessors, (21), 12 states have call successors, (21) Word has length 71 [2023-12-19 23:41:29,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:41:29,849 INFO L225 Difference]: With dead ends: 118 [2023-12-19 23:41:29,849 INFO L226 Difference]: Without dead ends: 72 [2023-12-19 23:41:29,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 152 SyntacticMatches, 6 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=258, Invalid=734, Unknown=0, NotChecked=0, Total=992 [2023-12-19 23:41:29,850 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 23 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 23:41:29,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 69 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 23:41:29,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2023-12-19 23:41:29,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 62. [2023-12-19 23:41:29,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 34 states have internal predecessors, (36), 17 states have call successors, (17), 9 states have call predecessors, (17), 10 states have return successors, (31), 18 states have call predecessors, (31), 17 states have call successors, (31) [2023-12-19 23:41:29,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 84 transitions. [2023-12-19 23:41:29,857 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 84 transitions. Word has length 71 [2023-12-19 23:41:29,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:41:29,857 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 84 transitions. [2023-12-19 23:41:29,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 12 states have call successors, (24), 3 states have call predecessors, (24), 8 states have return successors, (21), 6 states have call predecessors, (21), 12 states have call successors, (21) [2023-12-19 23:41:29,857 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 84 transitions. [2023-12-19 23:41:29,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-19 23:41:29,858 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:41:29,858 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 8, 7, 7, 7, 7, 7, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:41:29,869 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 23:41:30,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:41:30,059 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:41:30,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:41:30,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1908192695, now seen corresponding path program 5 times [2023-12-19 23:41:30,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:41:30,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468173038] [2023-12-19 23:41:30,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:41:30,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:41:30,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:30,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:30,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:30,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:30,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:30,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:30,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:30,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:30,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:30,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:41:30,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:30,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 23:41:30,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:30,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:30,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:30,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:41:30,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:30,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 23:41:30,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:30,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:30,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:30,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:30,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:30,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:41:30,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:30,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 23:41:30,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:30,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:30,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:30,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:41:30,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:30,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-19 23:41:30,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:30,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:30,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:30,317 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 42 proven. 135 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2023-12-19 23:41:30,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:41:30,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468173038] [2023-12-19 23:41:30,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468173038] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:41:30,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033794010] [2023-12-19 23:41:30,318 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-19 23:41:30,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:41:30,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:41:30,319 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 23:41:30,344 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 23:41:30,408 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2023-12-19 23:41:30,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 23:41:30,411 INFO L262 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-19 23:41:30,412 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:41:30,512 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 123 proven. 50 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2023-12-19 23:41:30,512 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 23:41:31,009 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 123 proven. 60 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2023-12-19 23:41:31,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033794010] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 23:41:31,009 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 23:41:31,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 15] total 24 [2023-12-19 23:41:31,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205141016] [2023-12-19 23:41:31,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 23:41:31,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-19 23:41:31,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:41:31,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-19 23:41:31,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=460, Unknown=0, NotChecked=0, Total=552 [2023-12-19 23:41:31,011 INFO L87 Difference]: Start difference. First operand 62 states and 84 transitions. Second operand has 24 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 22 states have internal predecessors, (45), 13 states have call successors, (22), 2 states have call predecessors, (22), 9 states have return successors, (21), 9 states have call predecessors, (21), 13 states have call successors, (21) [2023-12-19 23:41:31,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:41:31,304 INFO L93 Difference]: Finished difference Result 74 states and 101 transitions. [2023-12-19 23:41:31,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-19 23:41:31,305 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 22 states have internal predecessors, (45), 13 states have call successors, (22), 2 states have call predecessors, (22), 9 states have return successors, (21), 9 states have call predecessors, (21), 13 states have call successors, (21) Word has length 91 [2023-12-19 23:41:31,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:41:31,306 INFO L225 Difference]: With dead ends: 74 [2023-12-19 23:41:31,306 INFO L226 Difference]: Without dead ends: 70 [2023-12-19 23:41:31,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 194 SyntacticMatches, 7 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=262, Invalid=1144, Unknown=0, NotChecked=0, Total=1406 [2023-12-19 23:41:31,307 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 33 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 23:41:31,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 106 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 23:41:31,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-12-19 23:41:31,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 65. [2023-12-19 23:41:31,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 36 states have (on average 1.0555555555555556) internal successors, (38), 36 states have internal predecessors, (38), 17 states have call successors, (17), 9 states have call predecessors, (17), 11 states have return successors, (32), 19 states have call predecessors, (32), 17 states have call successors, (32) [2023-12-19 23:41:31,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 87 transitions. [2023-12-19 23:41:31,312 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 87 transitions. Word has length 91 [2023-12-19 23:41:31,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:41:31,312 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 87 transitions. [2023-12-19 23:41:31,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 22 states have internal predecessors, (45), 13 states have call successors, (22), 2 states have call predecessors, (22), 9 states have return successors, (21), 9 states have call predecessors, (21), 13 states have call successors, (21) [2023-12-19 23:41:31,313 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 87 transitions. [2023-12-19 23:41:31,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-19 23:41:31,313 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:41:31,313 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 8, 7, 7, 7, 7, 7, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:41:31,321 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 23:41:31,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:41:31,524 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:41:31,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:41:31,525 INFO L85 PathProgramCache]: Analyzing trace with hash 768848125, now seen corresponding path program 6 times [2023-12-19 23:41:31,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:41:31,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778286179] [2023-12-19 23:41:31,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:41:31,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:41:31,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:31,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:31,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:31,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:31,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:31,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:31,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:32,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:32,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:32,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:41:32,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:32,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 23:41:32,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:32,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:32,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:32,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:41:32,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:32,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 23:41:32,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:32,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:32,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:32,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:32,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:32,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:41:32,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:32,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 23:41:32,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:32,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:32,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:32,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:41:32,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:32,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-19 23:41:32,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:32,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:32,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:32,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:32,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:32,259 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 20 proven. 163 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2023-12-19 23:41:32,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:41:32,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778286179] [2023-12-19 23:41:32,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778286179] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:41:32,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832492453] [2023-12-19 23:41:32,259 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-19 23:41:32,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:41:32,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:41:32,260 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 23:41:32,291 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 23:41:32,356 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2023-12-19 23:41:32,357 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 23:41:32,359 INFO L262 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 91 conjunts are in the unsatisfiable core [2023-12-19 23:41:32,361 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:41:32,592 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 0 proven. 161 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2023-12-19 23:41:32,593 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 23:41:33,762 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 0 proven. 441 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-12-19 23:41:33,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [832492453] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 23:41:33,763 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 23:41:33,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 17, 32] total 53 [2023-12-19 23:41:33,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775394717] [2023-12-19 23:41:33,763 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 23:41:33,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-12-19 23:41:33,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:41:33,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-12-19 23:41:33,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=2555, Unknown=0, NotChecked=0, Total=2756 [2023-12-19 23:41:33,765 INFO L87 Difference]: Start difference. First operand 65 states and 87 transitions. Second operand has 53 states, 44 states have (on average 1.5909090909090908) internal successors, (70), 40 states have internal predecessors, (70), 16 states have call successors, (26), 11 states have call predecessors, (26), 26 states have return successors, (35), 26 states have call predecessors, (35), 16 states have call successors, (35) [2023-12-19 23:41:37,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:41:37,144 INFO L93 Difference]: Finished difference Result 221 states and 322 transitions. [2023-12-19 23:41:37,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2023-12-19 23:41:37,145 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 44 states have (on average 1.5909090909090908) internal successors, (70), 40 states have internal predecessors, (70), 16 states have call successors, (26), 11 states have call predecessors, (26), 26 states have return successors, (35), 26 states have call predecessors, (35), 16 states have call successors, (35) Word has length 97 [2023-12-19 23:41:37,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:41:37,149 INFO L225 Difference]: With dead ends: 221 [2023-12-19 23:41:37,149 INFO L226 Difference]: Without dead ends: 217 [2023-12-19 23:41:37,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3367 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1726, Invalid=11614, Unknown=0, NotChecked=0, Total=13340 [2023-12-19 23:41:37,155 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 334 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 1603 mSolverCounterSat, 677 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 2280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 677 IncrementalHoareTripleChecker+Valid, 1603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 23:41:37,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 500 Invalid, 2280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [677 Valid, 1603 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 23:41:37,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2023-12-19 23:41:37,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 178. [2023-12-19 23:41:37,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 97 states have (on average 1.0721649484536082) internal successors, (104), 96 states have internal predecessors, (104), 47 states have call successors, (47), 27 states have call predecessors, (47), 33 states have return successors, (104), 54 states have call predecessors, (104), 47 states have call successors, (104) [2023-12-19 23:41:37,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 255 transitions. [2023-12-19 23:41:37,182 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 255 transitions. Word has length 97 [2023-12-19 23:41:37,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:41:37,183 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 255 transitions. [2023-12-19 23:41:37,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 44 states have (on average 1.5909090909090908) internal successors, (70), 40 states have internal predecessors, (70), 16 states have call successors, (26), 11 states have call predecessors, (26), 26 states have return successors, (35), 26 states have call predecessors, (35), 16 states have call successors, (35) [2023-12-19 23:41:37,183 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 255 transitions. [2023-12-19 23:41:37,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-19 23:41:37,185 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:41:37,185 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 8, 7, 7, 7, 7, 7, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:41:37,190 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 23:41:37,390 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,SelfDestructingSolverStorable8 [2023-12-19 23:41:37,391 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:41:37,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:41:37,391 INFO L85 PathProgramCache]: Analyzing trace with hash 489586039, now seen corresponding path program 7 times [2023-12-19 23:41:37,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:41:37,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210258493] [2023-12-19 23:41:37,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:41:37,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:41:37,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:37,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:37,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:37,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:37,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:37,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:37,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:37,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:37,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:37,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:41:37,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:37,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 23:41:37,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:37,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:37,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:37,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:41:37,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:37,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 23:41:37,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:37,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:37,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:37,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:37,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:37,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:41:37,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:37,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 23:41:37,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:37,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:37,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:37,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:41:37,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:37,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-19 23:41:37,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:37,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:37,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:37,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:37,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:37,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:37,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:37,691 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 42 proven. 150 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2023-12-19 23:41:37,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:41:37,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210258493] [2023-12-19 23:41:37,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210258493] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:41:37,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251856306] [2023-12-19 23:41:37,692 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-19 23:41:37,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:41:37,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:41:37,693 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 23:41:37,716 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 23:41:37,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:37,787 INFO L262 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-19 23:41:37,791 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:41:37,874 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 48 proven. 138 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2023-12-19 23:41:37,874 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 23:41:38,676 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 48 proven. 156 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2023-12-19 23:41:38,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251856306] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 23:41:38,676 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 23:41:38,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 19] total 28 [2023-12-19 23:41:38,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613656288] [2023-12-19 23:41:38,677 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 23:41:38,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-19 23:41:38,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:41:38,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-19 23:41:38,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=634, Unknown=0, NotChecked=0, Total=756 [2023-12-19 23:41:38,678 INFO L87 Difference]: Start difference. First operand 178 states and 255 transitions. Second operand has 28 states, 27 states have (on average 1.962962962962963) internal successors, (53), 26 states have internal predecessors, (53), 15 states have call successors, (23), 2 states have call predecessors, (23), 11 states have return successors, (25), 9 states have call predecessors, (25), 15 states have call successors, (25) [2023-12-19 23:41:39,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:41:39,017 INFO L93 Difference]: Finished difference Result 290 states and 469 transitions. [2023-12-19 23:41:39,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-19 23:41:39,018 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.962962962962963) internal successors, (53), 26 states have internal predecessors, (53), 15 states have call successors, (23), 2 states have call predecessors, (23), 11 states have return successors, (25), 9 states have call predecessors, (25), 15 states have call successors, (25) Word has length 103 [2023-12-19 23:41:39,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:41:39,019 INFO L225 Difference]: With dead ends: 290 [2023-12-19 23:41:39,019 INFO L226 Difference]: Without dead ends: 180 [2023-12-19 23:41:39,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 218 SyntacticMatches, 9 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=368, Invalid=1612, Unknown=0, NotChecked=0, Total=1980 [2023-12-19 23:41:39,021 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 50 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 23:41:39,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 119 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 23:41:39,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2023-12-19 23:41:39,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 156. [2023-12-19 23:41:39,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 81 states have (on average 1.0617283950617284) internal successors, (86), 81 states have internal predecessors, (86), 45 states have call successors, (45), 22 states have call predecessors, (45), 29 states have return successors, (88), 52 states have call predecessors, (88), 45 states have call successors, (88) [2023-12-19 23:41:39,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 219 transitions. [2023-12-19 23:41:39,040 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 219 transitions. Word has length 103 [2023-12-19 23:41:39,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:41:39,040 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 219 transitions. [2023-12-19 23:41:39,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.962962962962963) internal successors, (53), 26 states have internal predecessors, (53), 15 states have call successors, (23), 2 states have call predecessors, (23), 11 states have return successors, (25), 9 states have call predecessors, (25), 15 states have call successors, (25) [2023-12-19 23:41:39,040 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 219 transitions. [2023-12-19 23:41:39,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-19 23:41:39,041 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:41:39,041 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 12, 11, 11, 11, 11, 11, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:41:39,046 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 23:41:39,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-19 23:41:39,246 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:41:39,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:41:39,247 INFO L85 PathProgramCache]: Analyzing trace with hash -55947011, now seen corresponding path program 8 times [2023-12-19 23:41:39,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:41:39,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262081307] [2023-12-19 23:41:39,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:41:39,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:41:39,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:39,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:39,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:39,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:39,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:39,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:39,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:39,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:39,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:39,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:39,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:39,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:41:39,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:39,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 23:41:39,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:39,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:39,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:39,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:41:39,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:39,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 23:41:39,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:39,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:39,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:39,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:39,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:39,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:41:39,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:39,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 23:41:39,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:39,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:39,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:39,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:41:39,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:39,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-19 23:41:39,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:39,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:39,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:39,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:39,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:39,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:41:39,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:39,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 23:41:39,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:39,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:39,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:39,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:41:39,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:39,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 23:41:39,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:39,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:39,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:39,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:39,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:39,703 INFO L134 CoverageAnalysis]: Checked inductivity of 1136 backedges. 229 proven. 262 refuted. 0 times theorem prover too weak. 645 trivial. 0 not checked. [2023-12-19 23:41:39,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:41:39,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262081307] [2023-12-19 23:41:39,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262081307] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:41:39,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764310020] [2023-12-19 23:41:39,704 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-19 23:41:39,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:41:39,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:41:39,705 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 23:41:39,733 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 23:41:39,832 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-19 23:41:39,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 23:41:39,835 INFO L262 TraceCheckSpWp]: Trace formula consists of 639 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-19 23:41:39,837 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:41:39,886 INFO L134 CoverageAnalysis]: Checked inductivity of 1136 backedges. 233 proven. 268 refuted. 0 times theorem prover too weak. 635 trivial. 0 not checked. [2023-12-19 23:41:39,886 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 23:41:40,733 INFO L134 CoverageAnalysis]: Checked inductivity of 1136 backedges. 233 proven. 281 refuted. 0 times theorem prover too weak. 622 trivial. 0 not checked. [2023-12-19 23:41:40,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764310020] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 23:41:40,733 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 23:41:40,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 17] total 23 [2023-12-19 23:41:40,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907059570] [2023-12-19 23:41:40,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 23:41:40,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-19 23:41:40,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:41:40,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-19 23:41:40,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=405, Unknown=0, NotChecked=0, Total=506 [2023-12-19 23:41:40,735 INFO L87 Difference]: Start difference. First operand 156 states and 219 transitions. Second operand has 23 states, 22 states have (on average 2.409090909090909) internal successors, (53), 21 states have internal predecessors, (53), 16 states have call successors, (30), 3 states have call predecessors, (30), 10 states have return successors, (29), 8 states have call predecessors, (29), 16 states have call successors, (29) [2023-12-19 23:41:41,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:41:41,022 INFO L93 Difference]: Finished difference Result 247 states and 370 transitions. [2023-12-19 23:41:41,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-19 23:41:41,028 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.409090909090909) internal successors, (53), 21 states have internal predecessors, (53), 16 states have call successors, (30), 3 states have call predecessors, (30), 10 states have return successors, (29), 8 states have call predecessors, (29), 16 states have call successors, (29) Word has length 137 [2023-12-19 23:41:41,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:41:41,029 INFO L225 Difference]: With dead ends: 247 [2023-12-19 23:41:41,029 INFO L226 Difference]: Without dead ends: 177 [2023-12-19 23:41:41,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 306 SyntacticMatches, 8 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=430, Invalid=1292, Unknown=0, NotChecked=0, Total=1722 [2023-12-19 23:41:41,031 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 56 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 23:41:41,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 84 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 23:41:41,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2023-12-19 23:41:41,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 153. [2023-12-19 23:41:41,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 80 states have (on average 1.0625) internal successors, (85), 80 states have internal predecessors, (85), 45 states have call successors, (45), 23 states have call predecessors, (45), 27 states have return successors, (80), 49 states have call predecessors, (80), 45 states have call successors, (80) [2023-12-19 23:41:41,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 210 transitions. [2023-12-19 23:41:41,045 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 210 transitions. Word has length 137 [2023-12-19 23:41:41,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:41:41,045 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 210 transitions. [2023-12-19 23:41:41,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.409090909090909) internal successors, (53), 21 states have internal predecessors, (53), 16 states have call successors, (30), 3 states have call predecessors, (30), 10 states have return successors, (29), 8 states have call predecessors, (29), 16 states have call successors, (29) [2023-12-19 23:41:41,046 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 210 transitions. [2023-12-19 23:41:41,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-12-19 23:41:41,048 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:41:41,048 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 16, 15, 15, 15, 15, 15, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:41:41,055 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 23:41:41,256 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,SelfDestructingSolverStorable10 [2023-12-19 23:41:41,256 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:41:41,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:41:41,256 INFO L85 PathProgramCache]: Analyzing trace with hash 635206909, now seen corresponding path program 9 times [2023-12-19 23:41:41,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:41:41,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870909470] [2023-12-19 23:41:41,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:41:41,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:41:41,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:41,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:41,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:41,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:41,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:41,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:41,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:41,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:41,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:41,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:41,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:41,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:41:41,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:41,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 23:41:41,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:41,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:41,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:41,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:41:41,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:41,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 23:41:41,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:41,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:41,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:41,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:41,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:41,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:41:41,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:41,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 23:41:41,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:41,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:41,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:41,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:41:41,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:41,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-19 23:41:41,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:41,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:41,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:41,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:41,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:41,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:41,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:41,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:41:41,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:41,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 23:41:41,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:41,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:41,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:41,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:41:41,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:41,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 23:41:41,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:41,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:41,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:41,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:41,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:41,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:41:41,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:41,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 23:41:41,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:41,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:41,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:41,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:41:41,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:41,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-12-19 23:41:41,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:41,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:41,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:41,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:41,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:41,776 INFO L134 CoverageAnalysis]: Checked inductivity of 2084 backedges. 107 proven. 410 refuted. 0 times theorem prover too weak. 1567 trivial. 0 not checked. [2023-12-19 23:41:41,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:41:41,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870909470] [2023-12-19 23:41:41,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870909470] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:41:41,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310520414] [2023-12-19 23:41:41,776 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-19 23:41:41,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:41:41,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:41:41,777 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 23:41:41,779 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 23:41:41,914 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2023-12-19 23:41:41,915 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 23:41:41,917 INFO L262 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-19 23:41:41,921 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:41:42,009 INFO L134 CoverageAnalysis]: Checked inductivity of 2084 backedges. 97 proven. 343 refuted. 0 times theorem prover too weak. 1644 trivial. 0 not checked. [2023-12-19 23:41:42,009 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 23:41:42,512 INFO L134 CoverageAnalysis]: Checked inductivity of 2084 backedges. 97 proven. 356 refuted. 0 times theorem prover too weak. 1631 trivial. 0 not checked. [2023-12-19 23:41:42,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310520414] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 23:41:42,512 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 23:41:42,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 17] total 30 [2023-12-19 23:41:42,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857278307] [2023-12-19 23:41:42,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 23:41:42,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-19 23:41:42,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:41:42,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-19 23:41:42,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=752, Unknown=0, NotChecked=0, Total=870 [2023-12-19 23:41:42,514 INFO L87 Difference]: Start difference. First operand 153 states and 210 transitions. Second operand has 30 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 27 states have internal predecessors, (53), 18 states have call successors, (25), 2 states have call predecessors, (25), 15 states have return successors, (31), 16 states have call predecessors, (31), 18 states have call successors, (31) [2023-12-19 23:41:43,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:41:43,020 INFO L93 Difference]: Finished difference Result 185 states and 249 transitions. [2023-12-19 23:41:43,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-19 23:41:43,020 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 27 states have internal predecessors, (53), 18 states have call successors, (25), 2 states have call predecessors, (25), 15 states have return successors, (31), 16 states have call predecessors, (31), 18 states have call successors, (31) Word has length 177 [2023-12-19 23:41:43,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:41:43,022 INFO L225 Difference]: With dead ends: 185 [2023-12-19 23:41:43,022 INFO L226 Difference]: Without dead ends: 181 [2023-12-19 23:41:43,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 403 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 596 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=478, Invalid=2602, Unknown=0, NotChecked=0, Total=3080 [2023-12-19 23:41:43,023 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 64 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 23:41:43,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 132 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 23:41:43,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2023-12-19 23:41:43,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 156. [2023-12-19 23:41:43,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 82 states have (on average 1.0609756097560976) internal successors, (87), 82 states have internal predecessors, (87), 45 states have call successors, (45), 23 states have call predecessors, (45), 28 states have return successors, (81), 50 states have call predecessors, (81), 45 states have call successors, (81) [2023-12-19 23:41:43,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 213 transitions. [2023-12-19 23:41:43,035 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 213 transitions. Word has length 177 [2023-12-19 23:41:43,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:41:43,036 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 213 transitions. [2023-12-19 23:41:43,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 27 states have internal predecessors, (53), 18 states have call successors, (25), 2 states have call predecessors, (25), 15 states have return successors, (31), 16 states have call predecessors, (31), 18 states have call successors, (31) [2023-12-19 23:41:43,036 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 213 transitions. [2023-12-19 23:41:43,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-12-19 23:41:43,037 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:41:43,037 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 16, 15, 15, 15, 15, 15, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:41:43,042 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 23:41:43,242 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,SelfDestructingSolverStorable11 [2023-12-19 23:41:43,243 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:41:43,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:41:43,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1718503799, now seen corresponding path program 10 times [2023-12-19 23:41:43,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:41:43,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401617445] [2023-12-19 23:41:43,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:41:43,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:41:43,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:43,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:44,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:44,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:44,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:44,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:44,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:44,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:44,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:44,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:44,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:44,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:41:44,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:44,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 23:41:44,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:44,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:44,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:44,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:41:44,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:44,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 23:41:44,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:44,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:44,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:44,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:44,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:44,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:41:44,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:44,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 23:41:44,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:44,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:44,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:44,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:41:44,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:44,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-19 23:41:44,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:44,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:44,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:45,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:45,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:45,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:45,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:45,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:41:45,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:45,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 23:41:45,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:45,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:45,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:45,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:41:45,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:45,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 23:41:45,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:45,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:45,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:45,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:45,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:45,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:41:45,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:45,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 23:41:45,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:45,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:45,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:45,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:41:45,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:45,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-12-19 23:41:45,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:45,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:45,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:45,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:45,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:45,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:41:45,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:41:45,293 INFO L134 CoverageAnalysis]: Checked inductivity of 2100 backedges. 44 proven. 707 refuted. 0 times theorem prover too weak. 1349 trivial. 0 not checked. [2023-12-19 23:41:45,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:41:45,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401617445] [2023-12-19 23:41:45,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401617445] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:41:45,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633847559] [2023-12-19 23:41:45,294 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-19 23:41:45,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:41:45,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:41:45,296 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 23:41:45,319 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 23:41:45,462 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-19 23:41:45,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 23:41:45,472 INFO L262 TraceCheckSpWp]: Trace formula consists of 849 conjuncts, 175 conjunts are in the unsatisfiable core [2023-12-19 23:41:45,475 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:41:45,836 INFO L134 CoverageAnalysis]: Checked inductivity of 2100 backedges. 0 proven. 705 refuted. 0 times theorem prover too weak. 1395 trivial. 0 not checked. [2023-12-19 23:41:45,837 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 23:41:48,603 INFO L134 CoverageAnalysis]: Checked inductivity of 2100 backedges. 0 proven. 2025 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-12-19 23:41:48,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1633847559] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 23:41:48,603 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 23:41:48,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 21, 58] total 85 [2023-12-19 23:41:48,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405872219] [2023-12-19 23:41:48,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 23:41:48,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2023-12-19 23:41:48,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:41:48,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2023-12-19 23:41:48,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=319, Invalid=6821, Unknown=0, NotChecked=0, Total=7140 [2023-12-19 23:41:48,606 INFO L87 Difference]: Start difference. First operand 156 states and 213 transitions. Second operand has 85 states, 67 states have (on average 1.626865671641791) internal successors, (109), 64 states have internal predecessors, (109), 29 states have call successors, (43), 19 states have call predecessors, (43), 42 states have return successors, (56), 43 states have call predecessors, (56), 29 states have call successors, (56) [2023-12-19 23:42:07,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:42:07,402 INFO L93 Difference]: Finished difference Result 523 states and 791 transitions. [2023-12-19 23:42:07,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2023-12-19 23:42:07,403 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 67 states have (on average 1.626865671641791) internal successors, (109), 64 states have internal predecessors, (109), 29 states have call successors, (43), 19 states have call predecessors, (43), 42 states have return successors, (56), 43 states have call predecessors, (56), 29 states have call successors, (56) Word has length 183 [2023-12-19 23:42:07,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:42:07,406 INFO L225 Difference]: With dead ends: 523 [2023-12-19 23:42:07,406 INFO L226 Difference]: Without dead ends: 519 [2023-12-19 23:42:07,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 650 GetRequests, 410 SyntacticMatches, 0 SemanticMatches, 240 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16551 ImplicationChecksByTransitivity, 17.7s TimeCoverageRelationStatistics Valid=7781, Invalid=50541, Unknown=0, NotChecked=0, Total=58322 [2023-12-19 23:42:07,412 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 1485 mSDsluCounter, 1097 mSDsCounter, 0 mSdLazyCounter, 3850 mSolverCounterSat, 3184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1491 SdHoareTripleChecker+Valid, 1130 SdHoareTripleChecker+Invalid, 7034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3184 IncrementalHoareTripleChecker+Valid, 3850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-19 23:42:07,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1491 Valid, 1130 Invalid, 7034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3184 Valid, 3850 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-19 23:42:07,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2023-12-19 23:42:07,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 436. [2023-12-19 23:42:07,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 235 states have (on average 1.0595744680851065) internal successors, (249), 231 states have internal predecessors, (249), 125 states have call successors, (125), 74 states have call predecessors, (125), 75 states have return successors, (256), 130 states have call predecessors, (256), 125 states have call successors, (256) [2023-12-19 23:42:07,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 630 transitions. [2023-12-19 23:42:07,452 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 630 transitions. Word has length 183 [2023-12-19 23:42:07,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:42:07,453 INFO L495 AbstractCegarLoop]: Abstraction has 436 states and 630 transitions. [2023-12-19 23:42:07,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 67 states have (on average 1.626865671641791) internal successors, (109), 64 states have internal predecessors, (109), 29 states have call successors, (43), 19 states have call predecessors, (43), 42 states have return successors, (56), 43 states have call predecessors, (56), 29 states have call successors, (56) [2023-12-19 23:42:07,453 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 630 transitions. [2023-12-19 23:42:07,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-12-19 23:42:07,456 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:42:07,456 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 16, 15, 15, 15, 15, 15, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:42:07,464 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 23:42:07,661 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,SelfDestructingSolverStorable12 [2023-12-19 23:42:07,662 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:42:07,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:42:07,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1881135043, now seen corresponding path program 11 times [2023-12-19 23:42:07,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:42:07,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417080544] [2023-12-19 23:42:07,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:42:07,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:42:07,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:07,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:42:07,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:07,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:42:07,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:07,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:42:07,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:07,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:42:07,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:07,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:42:07,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:07,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:42:07,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:07,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 23:42:07,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:07,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:42:07,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:07,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:42:07,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:07,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 23:42:07,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:07,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:42:07,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:07,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:42:07,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:07,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:42:07,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:07,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 23:42:07,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:07,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:42:07,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:07,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:42:07,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:08,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-19 23:42:08,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:08,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:42:08,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:08,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:42:08,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:08,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:42:08,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:08,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:42:08,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:08,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 23:42:08,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:08,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:42:08,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:08,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:42:08,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:08,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 23:42:08,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:08,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:42:08,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:08,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:42:08,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:08,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:42:08,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:08,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 23:42:08,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:08,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:42:08,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:08,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:42:08,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:08,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-12-19 23:42:08,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:08,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:42:08,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:08,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:42:08,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:08,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:42:08,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:08,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:42:08,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:08,155 INFO L134 CoverageAnalysis]: Checked inductivity of 2122 backedges. 107 proven. 431 refuted. 0 times theorem prover too weak. 1584 trivial. 0 not checked. [2023-12-19 23:42:08,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:42:08,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417080544] [2023-12-19 23:42:08,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417080544] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:42:08,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41345896] [2023-12-19 23:42:08,155 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-19 23:42:08,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:42:08,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:42:08,156 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 23:42:08,158 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 23:42:08,356 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 27 check-sat command(s) [2023-12-19 23:42:08,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 23:42:08,359 INFO L262 TraceCheckSpWp]: Trace formula consists of 863 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-19 23:42:08,362 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:42:08,463 INFO L134 CoverageAnalysis]: Checked inductivity of 2122 backedges. 340 proven. 190 refuted. 0 times theorem prover too weak. 1592 trivial. 0 not checked. [2023-12-19 23:42:08,464 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 23:42:09,672 INFO L134 CoverageAnalysis]: Checked inductivity of 2122 backedges. 343 proven. 219 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2023-12-19 23:42:09,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41345896] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 23:42:09,672 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 23:42:09,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15, 23] total 32 [2023-12-19 23:42:09,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518442145] [2023-12-19 23:42:09,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 23:42:09,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-19 23:42:09,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:42:09,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-19 23:42:09,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=837, Unknown=0, NotChecked=0, Total=992 [2023-12-19 23:42:09,674 INFO L87 Difference]: Start difference. First operand 436 states and 630 transitions. Second operand has 32 states, 31 states have (on average 1.935483870967742) internal successors, (60), 30 states have internal predecessors, (60), 18 states have call successors, (28), 2 states have call predecessors, (28), 13 states have return successors, (34), 13 states have call predecessors, (34), 18 states have call successors, (34) [2023-12-19 23:42:10,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:42:10,110 INFO L93 Difference]: Finished difference Result 682 states and 1087 transitions. [2023-12-19 23:42:10,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-19 23:42:10,110 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.935483870967742) internal successors, (60), 30 states have internal predecessors, (60), 18 states have call successors, (28), 2 states have call predecessors, (28), 13 states have return successors, (34), 13 states have call predecessors, (34), 18 states have call successors, (34) Word has length 189 [2023-12-19 23:42:10,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:42:10,118 INFO L225 Difference]: With dead ends: 682 [2023-12-19 23:42:10,119 INFO L226 Difference]: Without dead ends: 466 [2023-12-19 23:42:10,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 420 SyntacticMatches, 11 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 645 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=503, Invalid=2253, Unknown=0, NotChecked=0, Total=2756 [2023-12-19 23:42:10,120 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 62 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 23:42:10,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 99 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 23:42:10,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2023-12-19 23:42:10,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 393. [2023-12-19 23:42:10,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 200 states have (on average 1.06) internal successors, (212), 200 states have internal predecessors, (212), 119 states have call successors, (119), 59 states have call predecessors, (119), 73 states have return successors, (219), 133 states have call predecessors, (219), 119 states have call successors, (219) [2023-12-19 23:42:10,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 550 transitions. [2023-12-19 23:42:10,160 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 550 transitions. Word has length 189 [2023-12-19 23:42:10,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:42:10,160 INFO L495 AbstractCegarLoop]: Abstraction has 393 states and 550 transitions. [2023-12-19 23:42:10,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.935483870967742) internal successors, (60), 30 states have internal predecessors, (60), 18 states have call successors, (28), 2 states have call predecessors, (28), 13 states have return successors, (34), 13 states have call predecessors, (34), 18 states have call successors, (34) [2023-12-19 23:42:10,160 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 550 transitions. [2023-12-19 23:42:10,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2023-12-19 23:42:10,163 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:42:10,164 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 24, 23, 23, 23, 23, 23, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:42:10,170 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-19 23:42:10,370 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,SelfDestructingSolverStorable13 [2023-12-19 23:42:10,370 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:42:10,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:42:10,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1565835639, now seen corresponding path program 12 times [2023-12-19 23:42:10,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:42:10,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184173671] [2023-12-19 23:42:10,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:42:10,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:42:10,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:10,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:42:10,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:10,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:42:10,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:10,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:42:10,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:10,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:42:10,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:10,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:42:10,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:10,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:42:10,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:10,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:42:10,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:10,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 23:42:10,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:10,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:42:10,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:10,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:42:10,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:10,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 23:42:10,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:10,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:42:10,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:10,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:42:10,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:10,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:42:10,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:10,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 23:42:10,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:10,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:42:10,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:10,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:42:10,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:10,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-19 23:42:10,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:10,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:42:10,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:10,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:42:11,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:11,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:42:11,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:11,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:42:11,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:11,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 23:42:11,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:11,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:42:11,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:11,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:42:11,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:11,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 23:42:11,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:11,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:42:11,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:11,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:42:11,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:11,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:42:11,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:11,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 23:42:11,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:11,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:42:11,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:11,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:42:11,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:11,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-12-19 23:42:11,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:11,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:42:11,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:11,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:42:11,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:11,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:42:11,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:11,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:42:11,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:11,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 23:42:11,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:11,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:42:11,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:11,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:42:11,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:11,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 23:42:11,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:11,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:42:11,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:11,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:42:11,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:11,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:42:11,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:11,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 23:42:11,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:11,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:42:11,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:11,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:42:11,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:11,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2023-12-19 23:42:11,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:11,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:42:11,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:11,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:42:11,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:11,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:42:11,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:11,153 INFO L134 CoverageAnalysis]: Checked inductivity of 4860 backedges. 640 proven. 804 refuted. 0 times theorem prover too weak. 3416 trivial. 0 not checked. [2023-12-19 23:42:11,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:42:11,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184173671] [2023-12-19 23:42:11,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184173671] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:42:11,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823588367] [2023-12-19 23:42:11,154 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-19 23:42:11,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:42:11,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:42:11,155 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 23:42:11,178 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 23:42:11,313 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2023-12-19 23:42:11,313 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 23:42:11,315 INFO L262 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-19 23:42:11,318 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:42:11,426 INFO L134 CoverageAnalysis]: Checked inductivity of 4860 backedges. 295 proven. 678 refuted. 0 times theorem prover too weak. 3887 trivial. 0 not checked. [2023-12-19 23:42:11,426 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 23:42:12,795 INFO L134 CoverageAnalysis]: Checked inductivity of 4860 backedges. 297 proven. 710 refuted. 0 times theorem prover too weak. 3853 trivial. 0 not checked. [2023-12-19 23:42:12,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823588367] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 23:42:12,795 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 23:42:12,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 23] total 33 [2023-12-19 23:42:12,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803363570] [2023-12-19 23:42:12,796 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 23:42:12,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-19 23:42:12,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:42:12,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-19 23:42:12,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=913, Unknown=0, NotChecked=0, Total=1056 [2023-12-19 23:42:12,797 INFO L87 Difference]: Start difference. First operand 393 states and 550 transitions. Second operand has 33 states, 31 states have (on average 2.032258064516129) internal successors, (63), 30 states have internal predecessors, (63), 23 states have call successors, (34), 2 states have call predecessors, (34), 16 states have return successors, (42), 17 states have call predecessors, (42), 23 states have call successors, (42) [2023-12-19 23:42:13,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:42:13,455 INFO L93 Difference]: Finished difference Result 569 states and 837 transitions. [2023-12-19 23:42:13,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-19 23:42:13,455 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 31 states have (on average 2.032258064516129) internal successors, (63), 30 states have internal predecessors, (63), 23 states have call successors, (34), 2 states have call predecessors, (34), 16 states have return successors, (42), 17 states have call predecessors, (42), 23 states have call successors, (42) Word has length 263 [2023-12-19 23:42:13,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:42:13,458 INFO L225 Difference]: With dead ends: 569 [2023-12-19 23:42:13,458 INFO L226 Difference]: Without dead ends: 463 [2023-12-19 23:42:13,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 669 GetRequests, 597 SyntacticMatches, 11 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 939 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=636, Invalid=3270, Unknown=0, NotChecked=0, Total=3906 [2023-12-19 23:42:13,460 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 90 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 23:42:13,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 183 Invalid, 835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 767 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 23:42:13,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2023-12-19 23:42:13,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 393. [2023-12-19 23:42:13,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 201 states have (on average 1.0597014925373134) internal successors, (213), 201 states have internal predecessors, (213), 119 states have call successors, (119), 60 states have call predecessors, (119), 72 states have return successors, (204), 131 states have call predecessors, (204), 119 states have call successors, (204) [2023-12-19 23:42:13,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 536 transitions. [2023-12-19 23:42:13,521 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 536 transitions. Word has length 263 [2023-12-19 23:42:13,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:42:13,521 INFO L495 AbstractCegarLoop]: Abstraction has 393 states and 536 transitions. [2023-12-19 23:42:13,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 31 states have (on average 2.032258064516129) internal successors, (63), 30 states have internal predecessors, (63), 23 states have call successors, (34), 2 states have call predecessors, (34), 16 states have return successors, (42), 17 states have call predecessors, (42), 23 states have call successors, (42) [2023-12-19 23:42:13,521 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 536 transitions. [2023-12-19 23:42:13,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2023-12-19 23:42:13,525 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:42:13,525 INFO L195 NwaCegarLoop]: trace histogram [63, 63, 32, 31, 31, 31, 31, 31, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:42:13,532 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 23:42:13,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:42:13,730 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:42:13,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:42:13,731 INFO L85 PathProgramCache]: Analyzing trace with hash 247251005, now seen corresponding path program 13 times [2023-12-19 23:42:13,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:42:13,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102634157] [2023-12-19 23:42:13,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:42:13,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:42:13,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:15,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:42:15,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:17,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:42:17,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:17,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:42:17,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:17,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:42:17,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:17,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:42:17,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:17,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:42:17,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:17,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:42:17,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:17,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 23:42:17,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:17,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:42:17,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:17,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:42:17,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:17,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 23:42:17,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:17,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:42:17,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:17,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:42:17,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:17,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:42:17,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:17,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 23:42:17,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:17,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:42:17,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:17,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:42:17,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:17,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-19 23:42:17,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:17,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:42:17,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:17,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:42:17,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:17,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:42:17,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:17,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:42:17,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:17,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 23:42:17,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:17,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:42:17,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:17,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:42:17,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:17,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 23:42:17,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:17,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:42:17,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:17,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:42:17,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:17,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:42:17,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:17,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 23:42:17,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:18,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:42:18,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:18,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:42:18,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:18,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-12-19 23:42:18,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:18,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:42:18,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:18,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:42:18,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:18,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:42:18,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:18,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:42:18,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:18,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:42:18,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:18,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 23:42:18,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:18,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:42:18,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:18,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:42:18,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:18,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 23:42:18,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:18,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:42:18,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:18,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:42:18,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:18,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:42:18,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:18,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 23:42:18,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:18,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:42:18,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:18,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:42:18,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:18,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-19 23:42:18,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:18,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:42:18,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:18,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:42:18,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:18,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:42:18,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:18,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:42:18,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:18,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 23:42:18,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:18,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:42:18,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:18,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:42:18,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:18,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 23:42:18,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:18,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:42:18,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:18,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:42:18,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:18,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:42:18,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:18,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 23:42:18,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:18,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:42:18,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:18,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:42:18,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:18,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2023-12-19 23:42:18,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:18,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:42:18,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:18,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:42:18,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:19,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:42:19,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:19,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:42:19,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:19,059 INFO L134 CoverageAnalysis]: Checked inductivity of 8794 backedges. 92 proven. 2942 refuted. 0 times theorem prover too weak. 5760 trivial. 0 not checked. [2023-12-19 23:42:19,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:42:19,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102634157] [2023-12-19 23:42:19,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102634157] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:42:19,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554415685] [2023-12-19 23:42:19,060 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-19 23:42:19,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:42:19,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:42:19,061 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 23:42:19,061 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 23:42:19,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:42:19,337 INFO L262 TraceCheckSpWp]: Trace formula consists of 1647 conjuncts, 339 conjunts are in the unsatisfiable core [2023-12-19 23:42:19,343 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:42:19,967 INFO L134 CoverageAnalysis]: Checked inductivity of 8794 backedges. 0 proven. 2940 refuted. 0 times theorem prover too weak. 5854 trivial. 0 not checked. [2023-12-19 23:42:19,967 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 23:42:26,901 INFO L134 CoverageAnalysis]: Checked inductivity of 8794 backedges. 0 proven. 8644 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2023-12-19 23:42:26,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [554415685] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 23:42:26,901 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 23:42:26,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 25, 108] total 141 [2023-12-19 23:42:26,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470250412] [2023-12-19 23:42:26,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 23:42:26,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 141 states [2023-12-19 23:42:26,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:42:26,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 141 interpolants. [2023-12-19 23:42:26,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=513, Invalid=19227, Unknown=0, NotChecked=0, Total=19740 [2023-12-19 23:42:26,904 INFO L87 Difference]: Start difference. First operand 393 states and 536 transitions. Second operand has 141 states, 106 states have (on average 1.6981132075471699) internal successors, (180), 108 states have internal predecessors, (180), 54 states have call successors, (76), 35 states have call predecessors, (76), 70 states have return successors, (93), 72 states have call predecessors, (93), 54 states have call successors, (93) [2023-12-19 23:44:40,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:44:40,042 INFO L93 Difference]: Finished difference Result 1256 states and 1957 transitions. [2023-12-19 23:44:40,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 394 states. [2023-12-19 23:44:40,042 INFO L78 Accepts]: Start accepts. Automaton has has 141 states, 106 states have (on average 1.6981132075471699) internal successors, (180), 108 states have internal predecessors, (180), 54 states have call successors, (76), 35 states have call predecessors, (76), 70 states have return successors, (93), 72 states have call predecessors, (93), 54 states have call successors, (93) Word has length 349 [2023-12-19 23:44:40,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:44:40,051 INFO L225 Difference]: With dead ends: 1256 [2023-12-19 23:44:40,051 INFO L226 Difference]: Without dead ends: 1252 [2023-12-19 23:44:40,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1318 GetRequests, 802 SyntacticMatches, 0 SemanticMatches, 516 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84538 ImplicationChecksByTransitivity, 128.5s TimeCoverageRelationStatistics Valid=36366, Invalid=231440, Unknown=0, NotChecked=0, Total=267806 [2023-12-19 23:44:40,064 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 6211 mSDsluCounter, 2059 mSDsCounter, 0 mSdLazyCounter, 7224 mSolverCounterSat, 15742 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6218 SdHoareTripleChecker+Valid, 2095 SdHoareTripleChecker+Invalid, 22966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 15742 IncrementalHoareTripleChecker+Valid, 7224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2023-12-19 23:44:40,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6218 Valid, 2095 Invalid, 22966 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [15742 Valid, 7224 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2023-12-19 23:44:40,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1252 states. [2023-12-19 23:44:40,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1252 to 1081. [2023-12-19 23:44:40,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1081 states, 580 states have (on average 1.05) internal successors, (609), 569 states have internal predecessors, (609), 324 states have call successors, (324), 195 states have call predecessors, (324), 176 states have return successors, (644), 316 states have call predecessors, (644), 324 states have call successors, (644) [2023-12-19 23:44:40,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1081 states to 1081 states and 1577 transitions. [2023-12-19 23:44:40,209 INFO L78 Accepts]: Start accepts. Automaton has 1081 states and 1577 transitions. Word has length 349 [2023-12-19 23:44:40,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:44:40,210 INFO L495 AbstractCegarLoop]: Abstraction has 1081 states and 1577 transitions. [2023-12-19 23:44:40,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 141 states, 106 states have (on average 1.6981132075471699) internal successors, (180), 108 states have internal predecessors, (180), 54 states have call successors, (76), 35 states have call predecessors, (76), 70 states have return successors, (93), 72 states have call predecessors, (93), 54 states have call successors, (93) [2023-12-19 23:44:40,211 INFO L276 IsEmpty]: Start isEmpty. Operand 1081 states and 1577 transitions. [2023-12-19 23:44:40,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2023-12-19 23:44:40,217 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:44:40,218 INFO L195 NwaCegarLoop]: trace histogram [63, 63, 32, 31, 31, 31, 31, 31, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:44:40,240 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 23:44:40,424 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,SelfDestructingSolverStorable15 [2023-12-19 23:44:40,424 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:44:40,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:44:40,425 INFO L85 PathProgramCache]: Analyzing trace with hash -2054178505, now seen corresponding path program 14 times [2023-12-19 23:44:40,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:44:40,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268391313] [2023-12-19 23:44:40,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:44:40,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:44:40,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:40,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:40,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:40,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:40,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:40,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:40,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:40,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:40,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:40,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:40,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:41,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:41,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:41,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:44:41,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:41,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 23:44:41,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:41,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:41,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:41,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:44:41,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:41,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 23:44:41,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:41,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:41,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:41,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:41,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:41,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:44:41,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:41,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 23:44:41,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:41,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:41,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:41,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:44:41,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:41,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-19 23:44:41,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:41,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:41,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:41,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:41,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:41,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:41,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:41,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:44:41,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:41,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 23:44:41,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:41,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:41,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:41,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:44:41,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:41,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 23:44:41,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:41,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:41,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:41,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:41,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:41,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:44:41,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:41,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 23:44:41,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:41,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:41,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:41,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:44:41,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:41,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-12-19 23:44:41,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:41,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:41,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:41,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:41,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:41,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:41,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:41,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:41,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:41,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:44:41,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:41,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 23:44:41,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:41,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:41,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:41,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:44:41,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:41,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 23:44:41,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:41,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:41,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:41,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:41,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:41,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:44:41,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:41,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 23:44:41,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:41,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:41,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:41,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:44:41,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:41,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-19 23:44:41,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:41,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:41,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:41,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:41,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:41,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:41,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:41,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:44:41,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:41,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 23:44:41,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:41,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:41,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:41,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:44:41,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:41,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 23:44:41,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:41,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:41,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:41,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:41,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:41,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:44:41,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:41,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 23:44:41,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:41,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:41,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:41,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:44:41,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:41,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2023-12-19 23:44:41,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:41,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:41,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:41,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:41,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:41,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:41,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:41,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:41,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:41,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:41,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:41,252 INFO L134 CoverageAnalysis]: Checked inductivity of 8822 backedges. 244 proven. 1132 refuted. 0 times theorem prover too weak. 7446 trivial. 0 not checked. [2023-12-19 23:44:41,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:44:41,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268391313] [2023-12-19 23:44:41,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268391313] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:44:41,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332561662] [2023-12-19 23:44:41,253 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-19 23:44:41,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:44:41,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:44:41,254 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 23:44:41,256 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 23:44:41,599 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-19 23:44:41,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 23:44:41,605 INFO L262 TraceCheckSpWp]: Trace formula consists of 1661 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-19 23:44:41,609 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:44:41,703 INFO L134 CoverageAnalysis]: Checked inductivity of 8822 backedges. 254 proven. 1112 refuted. 0 times theorem prover too weak. 7456 trivial. 0 not checked. [2023-12-19 23:44:41,704 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 23:44:43,777 INFO L134 CoverageAnalysis]: Checked inductivity of 8822 backedges. 254 proven. 1162 refuted. 0 times theorem prover too weak. 7406 trivial. 0 not checked. [2023-12-19 23:44:43,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332561662] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 23:44:43,777 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 23:44:43,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 17, 27] total 36 [2023-12-19 23:44:43,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122469042] [2023-12-19 23:44:43,777 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 23:44:43,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-19 23:44:43,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:44:43,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-19 23:44:43,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=1068, Unknown=0, NotChecked=0, Total=1260 [2023-12-19 23:44:43,779 INFO L87 Difference]: Start difference. First operand 1081 states and 1577 transitions. Second operand has 36 states, 35 states have (on average 1.9142857142857144) internal successors, (67), 34 states have internal predecessors, (67), 21 states have call successors, (31), 2 states have call predecessors, (31), 15 states have return successors, (39), 13 states have call predecessors, (39), 21 states have call successors, (39) [2023-12-19 23:44:44,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:44:44,451 INFO L93 Difference]: Finished difference Result 1651 states and 2595 transitions. [2023-12-19 23:44:44,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-19 23:44:44,452 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 1.9142857142857144) internal successors, (67), 34 states have internal predecessors, (67), 21 states have call successors, (31), 2 states have call predecessors, (31), 15 states have return successors, (39), 13 states have call predecessors, (39), 21 states have call successors, (39) Word has length 355 [2023-12-19 23:44:44,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:44:44,457 INFO L225 Difference]: With dead ends: 1651 [2023-12-19 23:44:44,457 INFO L226 Difference]: Without dead ends: 1179 [2023-12-19 23:44:44,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 886 GetRequests, 814 SyntacticMatches, 13 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 897 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=659, Invalid=3001, Unknown=0, NotChecked=0, Total=3660 [2023-12-19 23:44:44,460 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 63 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 23:44:44,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 136 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 23:44:44,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2023-12-19 23:44:44,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 976. [2023-12-19 23:44:44,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 976 states, 492 states have (on average 1.0548780487804879) internal successors, (519), 492 states have internal predecessors, (519), 303 states have call successors, (303), 151 states have call predecessors, (303), 180 states have return successors, (532), 332 states have call predecessors, (532), 303 states have call successors, (532) [2023-12-19 23:44:44,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 976 states to 976 states and 1354 transitions. [2023-12-19 23:44:44,587 INFO L78 Accepts]: Start accepts. Automaton has 976 states and 1354 transitions. Word has length 355 [2023-12-19 23:44:44,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:44:44,587 INFO L495 AbstractCegarLoop]: Abstraction has 976 states and 1354 transitions. [2023-12-19 23:44:44,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 1.9142857142857144) internal successors, (67), 34 states have internal predecessors, (67), 21 states have call successors, (31), 2 states have call predecessors, (31), 15 states have return successors, (39), 13 states have call predecessors, (39), 21 states have call successors, (39) [2023-12-19 23:44:44,588 INFO L276 IsEmpty]: Start isEmpty. Operand 976 states and 1354 transitions. [2023-12-19 23:44:44,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2023-12-19 23:44:44,593 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:44:44,593 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 48, 47, 47, 47, 47, 47, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:44:44,604 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 23:44:44,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-19 23:44:44,800 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:44:44,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:44:44,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1093578813, now seen corresponding path program 15 times [2023-12-19 23:44:44,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:44:44,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654046365] [2023-12-19 23:44:44,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:44:44,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:44:44,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:45,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:45,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:45,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:45,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:45,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:45,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:45,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:45,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:45,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:45,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:45,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:45,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:45,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:45,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:45,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:44:45,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:45,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 23:44:45,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:45,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:45,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:45,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:44:45,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:45,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 23:44:45,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:46,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:46,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:44:46,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 23:44:46,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:46,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:44:46,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-19 23:44:46,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:46,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:46,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:46,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:44:46,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 23:44:46,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:46,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:44:46,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 23:44:46,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:46,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:46,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:44:46,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 23:44:46,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:46,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:44:46,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-12-19 23:44:46,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:46,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:46,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:46,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:46,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:44:46,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 23:44:46,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:46,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:44:46,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 23:44:46,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:46,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:46,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:44:46,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 23:44:46,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:46,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:44:46,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-19 23:44:46,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:46,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:46,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:46,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:44:46,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 23:44:46,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:46,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:44:46,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 23:44:46,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:46,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:46,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:44:46,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 23:44:46,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:46,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:44:46,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2023-12-19 23:44:46,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:46,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:46,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:46,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:46,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:44:46,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 23:44:46,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:46,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:44:46,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 23:44:46,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:46,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:46,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:44:46,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 23:44:46,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:46,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:44:46,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-19 23:44:46,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:46,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:46,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:46,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:44:46,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 23:44:46,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:46,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:44:46,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 23:44:46,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:46,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:46,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:44:46,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 23:44:46,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:46,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:44:46,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2023-12-19 23:44:46,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:46,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:46,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:46,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:46,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:46,310 INFO L134 CoverageAnalysis]: Checked inductivity of 20074 backedges. 1634 proven. 2187 refuted. 0 times theorem prover too weak. 16253 trivial. 0 not checked. [2023-12-19 23:44:46,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:44:46,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654046365] [2023-12-19 23:44:46,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654046365] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:44:46,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163557895] [2023-12-19 23:44:46,310 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-19 23:44:46,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:44:46,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:44:46,312 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 23:44:46,316 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 23:44:46,552 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2023-12-19 23:44:46,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 23:44:46,555 INFO L262 TraceCheckSpWp]: Trace formula consists of 639 conjuncts, 47 conjunts are in the unsatisfiable core [2023-12-19 23:44:46,560 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:44:46,737 INFO L134 CoverageAnalysis]: Checked inductivity of 20074 backedges. 428 proven. 1742 refuted. 0 times theorem prover too weak. 17904 trivial. 0 not checked. [2023-12-19 23:44:46,738 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 23:44:48,155 INFO L134 CoverageAnalysis]: Checked inductivity of 20074 backedges. 428 proven. 1783 refuted. 0 times theorem prover too weak. 17863 trivial. 0 not checked. [2023-12-19 23:44:48,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163557895] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 23:44:48,155 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 23:44:48,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 25] total 40 [2023-12-19 23:44:48,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997251341] [2023-12-19 23:44:48,155 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 23:44:48,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-12-19 23:44:48,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:44:48,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-12-19 23:44:48,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1374, Unknown=0, NotChecked=0, Total=1560 [2023-12-19 23:44:48,157 INFO L87 Difference]: Start difference. First operand 976 states and 1354 transitions. Second operand has 40 states, 38 states have (on average 1.894736842105263) internal successors, (72), 37 states have internal predecessors, (72), 30 states have call successors, (38), 2 states have call predecessors, (38), 23 states have return successors, (52), 23 states have call predecessors, (52), 30 states have call successors, (52) [2023-12-19 23:44:49,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:44:49,130 INFO L93 Difference]: Finished difference Result 1340 states and 1931 transitions. [2023-12-19 23:44:49,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-12-19 23:44:49,130 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 38 states have (on average 1.894736842105263) internal successors, (72), 37 states have internal predecessors, (72), 30 states have call successors, (38), 2 states have call predecessors, (38), 23 states have return successors, (52), 23 states have call predecessors, (52), 30 states have call successors, (52) Word has length 509 [2023-12-19 23:44:49,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:44:49,136 INFO L225 Difference]: With dead ends: 1340 [2023-12-19 23:44:49,136 INFO L226 Difference]: Without dead ends: 1174 [2023-12-19 23:44:49,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1267 GetRequests, 1193 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1151 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=889, Invalid=4811, Unknown=0, NotChecked=0, Total=5700 [2023-12-19 23:44:49,138 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 140 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 1134 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 1254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 23:44:49,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 211 Invalid, 1254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1134 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 23:44:49,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1174 states. [2023-12-19 23:44:49,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1174 to 976. [2023-12-19 23:44:49,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 976 states, 493 states have (on average 1.054766734279919) internal successors, (520), 493 states have internal predecessors, (520), 303 states have call successors, (303), 152 states have call predecessors, (303), 179 states have return successors, (501), 330 states have call predecessors, (501), 303 states have call successors, (501) [2023-12-19 23:44:49,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 976 states to 976 states and 1324 transitions. [2023-12-19 23:44:49,266 INFO L78 Accepts]: Start accepts. Automaton has 976 states and 1324 transitions. Word has length 509 [2023-12-19 23:44:49,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:44:49,267 INFO L495 AbstractCegarLoop]: Abstraction has 976 states and 1324 transitions. [2023-12-19 23:44:49,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 38 states have (on average 1.894736842105263) internal successors, (72), 37 states have internal predecessors, (72), 30 states have call successors, (38), 2 states have call predecessors, (38), 23 states have return successors, (52), 23 states have call predecessors, (52), 30 states have call successors, (52) [2023-12-19 23:44:49,267 INFO L276 IsEmpty]: Start isEmpty. Operand 976 states and 1324 transitions. [2023-12-19 23:44:49,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 676 [2023-12-19 23:44:49,272 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:44:49,273 INFO L195 NwaCegarLoop]: trace histogram [127, 127, 64, 63, 63, 63, 63, 63, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:44:49,278 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 23:44:49,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-19 23:44:49,479 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:44:49,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:44:49,479 INFO L85 PathProgramCache]: Analyzing trace with hash -866850505, now seen corresponding path program 16 times [2023-12-19 23:44:49,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:44:49,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918184091] [2023-12-19 23:44:49,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:44:49,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:44:49,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:44:57,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:44:57,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:03,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:45:03,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:04,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:45:04,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:04,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:45:04,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:04,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:45:04,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:05,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:45:05,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:05,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:45:05,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:05,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:45:05,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:05,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 23:45:05,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:05,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:45:05,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:05,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:45:05,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:05,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 23:45:05,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:05,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:45:05,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:05,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:45:05,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:05,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:45:05,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:05,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 23:45:05,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:05,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:45:05,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:05,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:45:05,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:05,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-19 23:45:05,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:05,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:45:05,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:05,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:45:05,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:05,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:45:05,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:05,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:45:05,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:05,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 23:45:05,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:05,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:45:05,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:05,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:45:05,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:05,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 23:45:05,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:05,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:45:05,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:05,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:45:05,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:05,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:45:05,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:05,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 23:45:05,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:05,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:45:05,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:05,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:45:05,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:05,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-12-19 23:45:05,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:05,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:45:05,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:05,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:45:05,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:05,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:45:05,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:05,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:45:05,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:05,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:45:05,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:05,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 23:45:05,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:05,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:45:05,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:05,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:45:05,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:05,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 23:45:05,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:05,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:45:05,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:05,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:45:05,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:05,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:45:05,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:05,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 23:45:05,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:05,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:45:05,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:05,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:45:05,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:05,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-19 23:45:05,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:06,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:45:06,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:06,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:45:06,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:06,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:45:06,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:06,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:45:06,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:06,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 23:45:06,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:06,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:45:06,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:06,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:45:06,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:06,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 23:45:06,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:06,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:45:06,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:06,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:45:06,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:06,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:45:06,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:06,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 23:45:06,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:06,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:45:06,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:06,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:45:06,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:06,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2023-12-19 23:45:06,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:07,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:45:07,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:08,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:45:08,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:08,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:45:08,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:08,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:45:08,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:08,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:45:08,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:08,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:45:08,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:08,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 23:45:08,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:08,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:45:08,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:08,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:45:08,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:08,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 23:45:08,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:08,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:45:08,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:08,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:45:08,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:08,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:45:08,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:08,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 23:45:08,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:08,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:45:08,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:08,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:45:08,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:08,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-19 23:45:08,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:08,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:45:08,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:08,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:45:08,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:08,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:45:08,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:08,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:45:08,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:08,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 23:45:08,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:08,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:45:08,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:08,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:45:08,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:08,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 23:45:08,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:08,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:45:08,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:08,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:45:08,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:08,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:45:08,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:08,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 23:45:08,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:08,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:45:08,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:08,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:45:08,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:08,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-12-19 23:45:08,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:09,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:45:09,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:09,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:45:09,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:09,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:45:09,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:09,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:45:09,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:09,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:45:09,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:09,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 23:45:09,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:09,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:45:09,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:09,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:45:09,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:09,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 23:45:09,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:09,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:45:09,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:09,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:45:09,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:09,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:45:09,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:09,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 23:45:09,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:09,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:45:09,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:09,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:45:09,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:09,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-19 23:45:09,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:09,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:45:09,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:09,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:45:09,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:09,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:45:09,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:09,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:45:09,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:09,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 23:45:09,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:09,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:45:09,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:09,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:45:09,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:09,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 23:45:09,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:09,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:45:09,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:09,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:45:09,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:09,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:45:09,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:09,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 23:45:09,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:09,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:45:09,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:09,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-19 23:45:09,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:09,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 637 [2023-12-19 23:45:09,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:09,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:45:09,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:09,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:45:09,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:09,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:45:09,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:09,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:45:09,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:09,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:45:09,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:45:09,718 INFO L134 CoverageAnalysis]: Checked inductivity of 35990 backedges. 188 proven. 12012 refuted. 0 times theorem prover too weak. 23790 trivial. 0 not checked. [2023-12-19 23:45:09,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:45:09,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918184091] [2023-12-19 23:45:09,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918184091] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:45:09,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709024244] [2023-12-19 23:45:09,718 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-19 23:45:09,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:45:09,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:45:09,720 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 23:45:09,720 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 23:45:10,244 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-19 23:45:10,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 23:45:10,264 INFO L262 TraceCheckSpWp]: Trace formula consists of 3229 conjuncts, 663 conjunts are in the unsatisfiable core [2023-12-19 23:45:10,275 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:45:11,237 INFO L134 CoverageAnalysis]: Checked inductivity of 35990 backedges. 0 proven. 12010 refuted. 0 times theorem prover too weak. 23980 trivial. 0 not checked. [2023-12-19 23:45:11,237 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 23:45:29,803 INFO L134 CoverageAnalysis]: Checked inductivity of 35990 backedges. 0 proven. 35698 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2023-12-19 23:45:29,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709024244] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 23:45:29,803 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 23:45:29,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 29, 206] total 245 [2023-12-19 23:45:29,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128206916] [2023-12-19 23:45:29,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 23:45:29,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 245 states [2023-12-19 23:45:29,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:45:29,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 245 interpolants. [2023-12-19 23:45:29,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=855, Invalid=58925, Unknown=0, NotChecked=0, Total=59780 [2023-12-19 23:45:29,810 INFO L87 Difference]: Start difference. First operand 976 states and 1324 transitions. Second operand has 245 states, 177 states have (on average 1.7796610169491525) internal successors, (315), 192 states have internal predecessors, (315), 103 states have call successors, (141), 67 states have call predecessors, (141), 122 states have return successors, (162), 125 states have call predecessors, (162), 103 states have call successors, (162) Received shutdown request... [2023-12-19 23:54:53,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 487 states. [2023-12-19 23:54:53,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2296 GetRequests, 1577 SyntacticMatches, 0 SemanticMatches, 718 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140765 ImplicationChecksByTransitivity, 551.2s TimeCoverageRelationStatistics Valid=68739, Invalid=448941, Unknown=0, NotChecked=0, Total=517680 [2023-12-19 23:54:53,100 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 19305 mSDsluCounter, 2129 mSDsCounter, 0 mSdLazyCounter, 5327 mSolverCounterSat, 52957 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19305 SdHoareTripleChecker+Valid, 2152 SdHoareTripleChecker+Invalid, 58284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 52957 IncrementalHoareTripleChecker+Valid, 5327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.0s IncrementalHoareTripleChecker+Time [2023-12-19 23:54:53,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19305 Valid, 2152 Invalid, 58284 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [52957 Valid, 5327 Invalid, 0 Unknown, 0 Unchecked, 16.0s Time] [2023-12-19 23:54:53,101 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-19 23:54:53,105 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 23:54:53,110 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 23:54:53,114 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 23:54:53,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:54:53,302 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (976states) and FLOYD_HOARE automaton (currently 487 states, 245 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-144-2-1 term,while SimplifyDDA2 was simplifying 2 xjuncts wrt. a ∧-46-2-1 context. [2023-12-19 23:54:53,305 INFO L445 BasicCegarLoop]: Path program histogram: [16, 2, 1] [2023-12-19 23:54:53,307 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-19 23:54:53,308 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 11:54:53 BoogieIcfgContainer [2023-12-19 23:54:53,308 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-19 23:54:53,309 INFO L158 Benchmark]: Toolchain (without parser) took 811265.10ms. Allocated memory was 317.7MB in the beginning and 1.4GB in the end (delta: 1.1GB). Free memory was 274.1MB in the beginning and 913.5MB in the end (delta: -639.4MB). Peak memory consumption was 995.7MB. Max. memory is 8.0GB. [2023-12-19 23:54:53,309 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 232.8MB. Free memory is still 182.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 23:54:53,309 INFO L158 Benchmark]: CACSL2BoogieTranslator took 164.04ms. Allocated memory is still 317.7MB. Free memory was 274.1MB in the beginning and 263.3MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-19 23:54:53,309 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.13ms. Allocated memory is still 317.7MB. Free memory was 263.3MB in the beginning and 261.9MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-19 23:54:53,309 INFO L158 Benchmark]: Boogie Preprocessor took 24.07ms. Allocated memory is still 317.7MB. Free memory was 261.9MB in the beginning and 260.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-19 23:54:53,310 INFO L158 Benchmark]: RCFGBuilder took 239.39ms. Allocated memory is still 317.7MB. Free memory was 260.1MB in the beginning and 249.3MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-19 23:54:53,310 INFO L158 Benchmark]: TraceAbstraction took 810810.89ms. Allocated memory was 317.7MB in the beginning and 1.4GB in the end (delta: 1.1GB). Free memory was 248.6MB in the beginning and 913.5MB in the end (delta: -664.9MB). Peak memory consumption was 970.5MB. Max. memory is 8.0GB. [2023-12-19 23:54:53,311 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 232.8MB. Free memory is still 182.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 164.04ms. Allocated memory is still 317.7MB. Free memory was 274.1MB in the beginning and 263.3MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 21.13ms. Allocated memory is still 317.7MB. Free memory was 263.3MB in the beginning and 261.9MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 24.07ms. Allocated memory is still 317.7MB. Free memory was 261.9MB in the beginning and 260.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 239.39ms. Allocated memory is still 317.7MB. Free memory was 260.1MB in the beginning and 249.3MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 810810.89ms. Allocated memory was 317.7MB in the beginning and 1.4GB in the end (delta: 1.1GB). Free memory was 248.6MB in the beginning and 913.5MB in the end (delta: -664.9MB). Peak memory consumption was 970.5MB. 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: 53]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 53). Cancelled while NwaCegarLoop was constructing difference of abstraction (976states) and FLOYD_HOARE automaton (currently 487 states, 245 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-144-2-1 term,while SimplifyDDA2 was simplifying 2 xjuncts wrt. a ∧-46-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 810.8s, OverallIterations: 19, TraceHistogramMax: 127, PathProgramHistogramMax: 16, EmptinessCheckTime: 0.1s, AutomataDifference: 724.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 28314 SdHoareTripleChecker+Valid, 29.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 28216 mSDsluCounter, 7593 SdHoareTripleChecker+Invalid, 24.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7225 mSDsCounter, 73392 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 24320 IncrementalHoareTripleChecker+Invalid, 97712 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 73392 mSolverCounterUnsat, 368 mSDtfsCounter, 24320 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9986 GetRequests, 7694 SyntacticMatches, 82 SemanticMatches, 2209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252024 ImplicationChecksByTransitivity, 706.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1081occurred in iteration=16, InterpolantAutomatonStates: 991, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 18 MinimizatonAttempts, 984 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 78.0s InterpolantComputationTime, 6811 NumberOfCodeBlocks, 6178 NumberOfCodeBlocksAsserted, 137 NumberOfCheckSat, 10154 ConstructedInterpolants, 0 QuantifiedInterpolants, 31121 SizeOfPredicates, 90 NumberOfNonLiveVariables, 12864 ConjunctsInSsa, 1580 ConjunctsInUnsatCore, 55 InterpolantComputations, 1 PerfectInterpolantSequences, 170068/263784 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