/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/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-66.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 20:43:37,973 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 20:43:38,047 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 20:43:38,051 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 20:43:38,052 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 20:43:38,074 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 20:43:38,075 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 20:43:38,075 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 20:43:38,076 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 20:43:38,078 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 20:43:38,079 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 20:43:38,079 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 20:43:38,080 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 20:43:38,081 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 20:43:38,081 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 20:43:38,081 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 20:43:38,081 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 20:43:38,081 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 20:43:38,081 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 20:43:38,082 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 20:43:38,082 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 20:43:38,083 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 20:43:38,083 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 20:43:38,083 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 20:43:38,083 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 20:43:38,083 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 20:43:38,083 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 20:43:38,084 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 20:43:38,084 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 20:43:38,084 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 20:43:38,085 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 20:43:38,085 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 20:43:38,085 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 20:43:38,085 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 20:43:38,085 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 20:43:38,086 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 20:43:38,086 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 20:43:38,086 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 20:43:38,086 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 20:43:38,086 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 20:43:38,086 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 20:43:38,086 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 20:43:38,086 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 20:43:38,087 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 20:43:38,288 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 20:43:38,314 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 20:43:38,315 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 20:43:38,316 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 20:43:38,317 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 20:43:38,317 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-66.i [2023-12-15 20:43:39,373 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 20:43:39,554 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 20:43:39,555 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-66.i [2023-12-15 20:43:39,562 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2554a080/bd62e69005c846dc9a7da7d8cb089426/FLAG96f0154af [2023-12-15 20:43:39,577 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2554a080/bd62e69005c846dc9a7da7d8cb089426 [2023-12-15 20:43:39,579 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 20:43:39,580 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 20:43:39,583 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 20:43:39,583 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 20:43:39,586 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 20:43:39,587 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 08:43:39" (1/1) ... [2023-12-15 20:43:39,587 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@678d42ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:43:39, skipping insertion in model container [2023-12-15 20:43:39,587 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 08:43:39" (1/1) ... [2023-12-15 20:43:39,614 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 20:43:39,754 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-66.i[916,929] [2023-12-15 20:43:39,783 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 20:43:39,790 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 20:43:39,799 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-66.i[916,929] [2023-12-15 20:43:39,814 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 20:43:39,825 INFO L206 MainTranslator]: Completed translation [2023-12-15 20:43:39,826 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:43:39 WrapperNode [2023-12-15 20:43:39,826 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 20:43:39,827 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 20:43:39,827 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 20:43:39,827 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 20:43:39,831 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:43:39" (1/1) ... [2023-12-15 20:43:39,837 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:43:39" (1/1) ... [2023-12-15 20:43:39,866 INFO L138 Inliner]: procedures = 26, calls = 27, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 101 [2023-12-15 20:43:39,867 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 20:43:39,867 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 20:43:39,867 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 20:43:39,867 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 20:43:39,885 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:43:39" (1/1) ... [2023-12-15 20:43:39,886 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:43:39" (1/1) ... [2023-12-15 20:43:39,888 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:43:39" (1/1) ... [2023-12-15 20:43:39,914 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]. [2023-12-15 20:43:39,915 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:43:39" (1/1) ... [2023-12-15 20:43:39,915 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:43:39" (1/1) ... [2023-12-15 20:43:39,920 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:43:39" (1/1) ... [2023-12-15 20:43:39,923 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:43:39" (1/1) ... [2023-12-15 20:43:39,935 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:43:39" (1/1) ... [2023-12-15 20:43:39,936 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:43:39" (1/1) ... [2023-12-15 20:43:39,939 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 20:43:39,940 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 20:43:39,940 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 20:43:39,940 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 20:43:39,941 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:43:39" (1/1) ... [2023-12-15 20:43:39,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 20:43:39,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:43:39,964 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) [2023-12-15 20:43:39,986 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 [2023-12-15 20:43:40,004 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 20:43:40,005 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 20:43:40,005 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 20:43:40,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 20:43:40,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 20:43:40,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 20:43:40,076 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 20:43:40,078 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 20:43:40,275 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 20:43:40,302 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 20:43:40,302 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 20:43:40,302 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 08:43:40 BoogieIcfgContainer [2023-12-15 20:43:40,302 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 20:43:40,305 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 20:43:40,305 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 20:43:40,307 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 20:43:40,308 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 08:43:39" (1/3) ... [2023-12-15 20:43:40,308 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a6c18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 08:43:40, skipping insertion in model container [2023-12-15 20:43:40,308 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:43:39" (2/3) ... [2023-12-15 20:43:40,309 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a6c18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 08:43:40, skipping insertion in model container [2023-12-15 20:43:40,309 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 08:43:40" (3/3) ... [2023-12-15 20:43:40,310 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_floatingpointinfluence_no-floats_file-66.i [2023-12-15 20:43:40,322 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 20:43:40,323 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 20:43:40,358 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 20:43:40,363 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;@63bd6578, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 20:43:40,364 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 20:43:40,367 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 23 states have internal predecessors, (32), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-15 20:43:40,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-15 20:43:40,375 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:43:40,375 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:43:40,376 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:43:40,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:43:40,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1944780512, now seen corresponding path program 1 times [2023-12-15 20:43:40,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:43:40,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411361335] [2023-12-15 20:43:40,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:43:40,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:43:40,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:40,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 20:43:40,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:40,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 20:43:40,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:40,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-15 20:43:40,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:40,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-15 20:43:40,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:40,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-15 20:43:40,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:40,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-15 20:43:40,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:40,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 20:43:40,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:40,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-15 20:43:40,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:40,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-15 20:43:40,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:40,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-15 20:43:40,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:40,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-15 20:43:40,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:40,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-15 20:43:40,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:40,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 20:43:40,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:40,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-15 20:43:40,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:40,695 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-15 20:43:40,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:43:40,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411361335] [2023-12-15 20:43:40,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411361335] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:43:40,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:43:40,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 20:43:40,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055591562] [2023-12-15 20:43:40,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:43:40,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 20:43:40,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:43:40,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 20:43:40,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 20:43:40,764 INFO L87 Difference]: Start difference. First operand has 39 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 23 states have internal predecessors, (32), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-15 20:43:40,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:43:40,810 INFO L93 Difference]: Finished difference Result 75 states and 132 transitions. [2023-12-15 20:43:40,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 20:43:40,813 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) Word has length 85 [2023-12-15 20:43:40,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:43:40,819 INFO L225 Difference]: With dead ends: 75 [2023-12-15 20:43:40,820 INFO L226 Difference]: Without dead ends: 37 [2023-12-15 20:43:40,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 20:43:40,827 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 20:43:40,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 52 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 20:43:40,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-12-15 20:43:40,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2023-12-15 20:43:40,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 21 states have internal predecessors, (27), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-15 20:43:40,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 55 transitions. [2023-12-15 20:43:40,863 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 55 transitions. Word has length 85 [2023-12-15 20:43:40,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:43:40,864 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 55 transitions. [2023-12-15 20:43:40,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-15 20:43:40,864 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 55 transitions. [2023-12-15 20:43:40,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-15 20:43:40,868 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:43:40,868 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:43:40,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 20:43:40,869 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:43:40,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:43:40,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1661919200, now seen corresponding path program 1 times [2023-12-15 20:43:40,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:43:40,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604237673] [2023-12-15 20:43:40,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:43:40,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:43:40,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:41,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 20:43:41,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:41,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 20:43:41,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:41,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-15 20:43:41,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:41,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-15 20:43:41,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:41,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-15 20:43:41,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:41,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-15 20:43:41,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:41,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 20:43:41,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:41,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-15 20:43:41,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:41,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-15 20:43:41,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:41,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-15 20:43:41,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:41,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-15 20:43:41,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:41,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-15 20:43:41,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:41,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 20:43:41,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:41,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-15 20:43:41,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:41,279 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-15 20:43:41,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:43:41,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604237673] [2023-12-15 20:43:41,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604237673] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:43:41,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:43:41,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 20:43:41,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100150529] [2023-12-15 20:43:41,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:43:41,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 20:43:41,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:43:41,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 20:43:41,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:43:41,286 INFO L87 Difference]: Start difference. First operand 37 states and 55 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-15 20:43:41,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:43:41,341 INFO L93 Difference]: Finished difference Result 109 states and 163 transitions. [2023-12-15 20:43:41,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 20:43:41,343 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 85 [2023-12-15 20:43:41,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:43:41,346 INFO L225 Difference]: With dead ends: 109 [2023-12-15 20:43:41,346 INFO L226 Difference]: Without dead ends: 73 [2023-12-15 20:43:41,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:43:41,348 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 26 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 20:43:41,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 94 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 20:43:41,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-12-15 20:43:41,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 70. [2023-12-15 20:43:41,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 39 states have (on average 1.2307692307692308) internal successors, (48), 39 states have internal predecessors, (48), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-12-15 20:43:41,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 104 transitions. [2023-12-15 20:43:41,373 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 104 transitions. Word has length 85 [2023-12-15 20:43:41,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:43:41,374 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 104 transitions. [2023-12-15 20:43:41,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-15 20:43:41,374 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 104 transitions. [2023-12-15 20:43:41,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-15 20:43:41,377 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:43:41,377 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:43:41,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 20:43:41,377 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:43:41,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:43:41,378 INFO L85 PathProgramCache]: Analyzing trace with hash -20088315, now seen corresponding path program 1 times [2023-12-15 20:43:41,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:43:41,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499828855] [2023-12-15 20:43:41,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:43:41,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:43:41,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:41,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 20:43:41,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:41,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 20:43:41,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:41,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-15 20:43:41,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:41,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-15 20:43:41,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:41,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-15 20:43:41,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:41,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-15 20:43:41,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:41,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 20:43:41,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:41,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-15 20:43:41,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:41,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-15 20:43:41,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:41,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-15 20:43:41,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:41,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-15 20:43:41,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:41,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-15 20:43:41,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:41,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 20:43:41,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:41,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-15 20:43:41,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:41,797 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-15 20:43:41,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:43:41,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499828855] [2023-12-15 20:43:41,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499828855] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:43:41,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:43:41,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 20:43:41,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689798246] [2023-12-15 20:43:41,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:43:41,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 20:43:41,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:43:41,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 20:43:41,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 20:43:41,802 INFO L87 Difference]: Start difference. First operand 70 states and 104 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-15 20:43:41,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:43:41,967 INFO L93 Difference]: Finished difference Result 183 states and 271 transitions. [2023-12-15 20:43:41,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 20:43:41,968 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 86 [2023-12-15 20:43:41,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:43:41,969 INFO L225 Difference]: With dead ends: 183 [2023-12-15 20:43:41,970 INFO L226 Difference]: Without dead ends: 114 [2023-12-15 20:43:41,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-15 20:43:41,971 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 68 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 20:43:41,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 162 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 20:43:41,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2023-12-15 20:43:41,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 104. [2023-12-15 20:43:41,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 58 states have (on average 1.2241379310344827) internal successors, (71), 58 states have internal predecessors, (71), 42 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-15 20:43:41,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 155 transitions. [2023-12-15 20:43:41,987 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 155 transitions. Word has length 86 [2023-12-15 20:43:41,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:43:41,987 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 155 transitions. [2023-12-15 20:43:41,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-15 20:43:41,987 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 155 transitions. [2023-12-15 20:43:41,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-15 20:43:41,988 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:43:41,988 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:43:41,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 20:43:41,988 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:43:41,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:43:41,989 INFO L85 PathProgramCache]: Analyzing trace with hash -20147897, now seen corresponding path program 1 times [2023-12-15 20:43:41,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:43:41,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885779106] [2023-12-15 20:43:41,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:43:41,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:43:42,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:44,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 20:43:44,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:44,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 20:43:44,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:44,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-15 20:43:44,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:44,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-15 20:43:44,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:44,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-15 20:43:44,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:44,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-15 20:43:44,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:44,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 20:43:44,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:44,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-15 20:43:44,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:44,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-15 20:43:44,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:44,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-15 20:43:44,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:44,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-15 20:43:44,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:44,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-15 20:43:44,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:44,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 20:43:44,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:44,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-15 20:43:44,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:44,858 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-15 20:43:44,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:43:44,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885779106] [2023-12-15 20:43:44,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885779106] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:43:44,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:43:44,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-15 20:43:44,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914825219] [2023-12-15 20:43:44,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:43:44,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 20:43:44,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:43:44,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 20:43:44,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-15 20:43:44,863 INFO L87 Difference]: Start difference. First operand 104 states and 155 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-15 20:43:45,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:43:45,430 INFO L93 Difference]: Finished difference Result 110 states and 161 transitions. [2023-12-15 20:43:45,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 20:43:45,431 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 86 [2023-12-15 20:43:45,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:43:45,433 INFO L225 Difference]: With dead ends: 110 [2023-12-15 20:43:45,433 INFO L226 Difference]: Without dead ends: 108 [2023-12-15 20:43:45,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2023-12-15 20:43:45,436 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 54 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 20:43:45,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 197 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 20:43:45,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-12-15 20:43:45,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 106. [2023-12-15 20:43:45,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 60 states have (on average 1.2166666666666666) internal successors, (73), 60 states have internal predecessors, (73), 42 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-15 20:43:45,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 157 transitions. [2023-12-15 20:43:45,449 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 157 transitions. Word has length 86 [2023-12-15 20:43:45,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:43:45,449 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 157 transitions. [2023-12-15 20:43:45,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-15 20:43:45,449 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 157 transitions. [2023-12-15 20:43:45,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-15 20:43:45,450 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:43:45,450 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:43:45,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 20:43:45,451 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:43:45,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:43:45,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1204557765, now seen corresponding path program 1 times [2023-12-15 20:43:45,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:43:45,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537241103] [2023-12-15 20:43:45,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:43:45,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:43:45,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:49,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 20:43:49,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:49,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 20:43:49,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:49,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-15 20:43:49,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:49,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-15 20:43:49,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:49,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-15 20:43:49,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:49,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-15 20:43:49,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:49,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 20:43:49,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:49,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-15 20:43:49,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:49,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-15 20:43:49,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:49,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-15 20:43:49,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:49,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-15 20:43:49,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:49,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-15 20:43:49,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:49,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 20:43:49,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:49,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-15 20:43:49,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:49,065 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-15 20:43:49,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:43:49,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537241103] [2023-12-15 20:43:49,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537241103] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:43:49,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:43:49,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-15 20:43:49,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954475608] [2023-12-15 20:43:49,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:43:49,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-15 20:43:49,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:43:49,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-15 20:43:49,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-15 20:43:49,069 INFO L87 Difference]: Start difference. First operand 106 states and 157 transitions. Second operand has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-15 20:43:50,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:43:50,166 INFO L93 Difference]: Finished difference Result 146 states and 208 transitions. [2023-12-15 20:43:50,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-15 20:43:50,167 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 86 [2023-12-15 20:43:50,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:43:50,168 INFO L225 Difference]: With dead ends: 146 [2023-12-15 20:43:50,168 INFO L226 Difference]: Without dead ends: 144 [2023-12-15 20:43:50,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2023-12-15 20:43:50,169 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 110 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 20:43:50,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 231 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 20:43:50,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2023-12-15 20:43:50,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 113. [2023-12-15 20:43:50,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 67 states have (on average 1.2686567164179106) internal successors, (85), 67 states have internal predecessors, (85), 42 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-15 20:43:50,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 169 transitions. [2023-12-15 20:43:50,181 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 169 transitions. Word has length 86 [2023-12-15 20:43:50,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:43:50,182 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 169 transitions. [2023-12-15 20:43:50,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-15 20:43:50,182 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 169 transitions. [2023-12-15 20:43:50,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-15 20:43:50,183 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:43:50,183 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:43:50,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 20:43:50,183 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:43:50,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:43:50,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1206404807, now seen corresponding path program 1 times [2023-12-15 20:43:50,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:43:50,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980581025] [2023-12-15 20:43:50,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:43:50,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:43:50,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:50,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 20:43:50,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:50,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 20:43:50,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:50,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-15 20:43:50,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:50,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-15 20:43:50,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:50,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-15 20:43:50,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:50,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-15 20:43:50,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:50,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 20:43:50,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:50,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-15 20:43:50,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:50,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-15 20:43:50,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:50,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-15 20:43:50,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:50,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-15 20:43:50,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:50,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-15 20:43:50,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:50,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 20:43:50,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:50,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-15 20:43:50,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:50,271 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-15 20:43:50,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:43:50,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980581025] [2023-12-15 20:43:50,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980581025] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:43:50,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:43:50,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 20:43:50,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063319089] [2023-12-15 20:43:50,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:43:50,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 20:43:50,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:43:50,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 20:43:50,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 20:43:50,273 INFO L87 Difference]: Start difference. First operand 113 states and 169 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-15 20:43:50,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:43:50,358 INFO L93 Difference]: Finished difference Result 186 states and 266 transitions. [2023-12-15 20:43:50,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 20:43:50,358 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 86 [2023-12-15 20:43:50,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:43:50,360 INFO L225 Difference]: With dead ends: 186 [2023-12-15 20:43:50,360 INFO L226 Difference]: Without dead ends: 148 [2023-12-15 20:43:50,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 20:43:50,361 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 61 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 20:43:50,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 140 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 20:43:50,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2023-12-15 20:43:50,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 126. [2023-12-15 20:43:50,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 77 states have (on average 1.2077922077922079) internal successors, (93), 77 states have internal predecessors, (93), 42 states have call successors, (42), 6 states have call predecessors, (42), 6 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-15 20:43:50,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 177 transitions. [2023-12-15 20:43:50,373 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 177 transitions. Word has length 86 [2023-12-15 20:43:50,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:43:50,373 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 177 transitions. [2023-12-15 20:43:50,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-15 20:43:50,373 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 177 transitions. [2023-12-15 20:43:50,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-15 20:43:50,374 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:43:50,374 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:43:50,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 20:43:50,374 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:43:50,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:43:50,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1261816067, now seen corresponding path program 1 times [2023-12-15 20:43:50,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:43:50,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862102448] [2023-12-15 20:43:50,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:43:50,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:43:50,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:57,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 20:43:57,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:57,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 20:43:57,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:57,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-15 20:43:57,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:57,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-15 20:43:57,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:57,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-15 20:43:57,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:57,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-15 20:43:57,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:57,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 20:43:57,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:57,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-15 20:43:57,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:57,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-15 20:43:57,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:57,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-15 20:43:57,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:57,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-15 20:43:57,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:57,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-15 20:43:57,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:57,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 20:43:57,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:57,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-15 20:43:57,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:57,075 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-15 20:43:57,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:43:57,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862102448] [2023-12-15 20:43:57,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862102448] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:43:57,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:43:57,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-15 20:43:57,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867285641] [2023-12-15 20:43:57,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:43:57,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-15 20:43:57,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:43:57,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-15 20:43:57,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-15 20:43:57,077 INFO L87 Difference]: Start difference. First operand 126 states and 177 transitions. Second operand has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-15 20:43:57,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:43:57,709 INFO L93 Difference]: Finished difference Result 165 states and 221 transitions. [2023-12-15 20:43:57,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 20:43:57,710 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 86 [2023-12-15 20:43:57,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:43:57,711 INFO L225 Difference]: With dead ends: 165 [2023-12-15 20:43:57,711 INFO L226 Difference]: Without dead ends: 163 [2023-12-15 20:43:57,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2023-12-15 20:43:57,712 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 93 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 20:43:57,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 226 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 20:43:57,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2023-12-15 20:43:57,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 131. [2023-12-15 20:43:57,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 81 states have (on average 1.2098765432098766) internal successors, (98), 81 states have internal predecessors, (98), 42 states have call successors, (42), 7 states have call predecessors, (42), 7 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-15 20:43:57,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 182 transitions. [2023-12-15 20:43:57,725 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 182 transitions. Word has length 86 [2023-12-15 20:43:57,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:43:57,726 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 182 transitions. [2023-12-15 20:43:57,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-15 20:43:57,726 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 182 transitions. [2023-12-15 20:43:57,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-15 20:43:57,727 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:43:57,727 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:43:57,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 20:43:57,727 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:43:57,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:43:57,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1263663109, now seen corresponding path program 1 times [2023-12-15 20:43:57,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:43:57,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915571590] [2023-12-15 20:43:57,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:43:57,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:43:57,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:59,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 20:43:59,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:59,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 20:43:59,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:59,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-15 20:43:59,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:59,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-15 20:43:59,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:59,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-15 20:43:59,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:59,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-15 20:43:59,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:59,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 20:43:59,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:59,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-15 20:43:59,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:59,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-15 20:43:59,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:59,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-15 20:43:59,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:59,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-15 20:43:59,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:59,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-15 20:43:59,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:59,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 20:43:59,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:59,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-15 20:43:59,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:43:59,106 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-15 20:43:59,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:43:59,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915571590] [2023-12-15 20:43:59,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915571590] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:43:59,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:43:59,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-15 20:43:59,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144110637] [2023-12-15 20:43:59,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:43:59,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 20:43:59,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:43:59,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 20:43:59,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-12-15 20:43:59,107 INFO L87 Difference]: Start difference. First operand 131 states and 182 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-15 20:43:59,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:43:59,629 INFO L93 Difference]: Finished difference Result 206 states and 280 transitions. [2023-12-15 20:43:59,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 20:43:59,629 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 86 [2023-12-15 20:43:59,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:43:59,630 INFO L225 Difference]: With dead ends: 206 [2023-12-15 20:43:59,630 INFO L226 Difference]: Without dead ends: 165 [2023-12-15 20:43:59,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2023-12-15 20:43:59,631 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 75 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 20:43:59,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 259 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 20:43:59,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2023-12-15 20:43:59,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 129. [2023-12-15 20:43:59,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 79 states have (on average 1.1898734177215189) internal successors, (94), 79 states have internal predecessors, (94), 42 states have call successors, (42), 7 states have call predecessors, (42), 7 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-15 20:43:59,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 178 transitions. [2023-12-15 20:43:59,645 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 178 transitions. Word has length 86 [2023-12-15 20:43:59,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:43:59,645 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 178 transitions. [2023-12-15 20:43:59,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-15 20:43:59,645 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 178 transitions. [2023-12-15 20:43:59,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-15 20:43:59,646 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:43:59,646 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:43:59,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-15 20:43:59,646 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:43:59,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:43:59,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1313450494, now seen corresponding path program 1 times [2023-12-15 20:43:59,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:43:59,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102276873] [2023-12-15 20:43:59,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:43:59,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:43:59,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:01,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 20:44:01,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:01,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 20:44:01,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:01,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-15 20:44:01,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:01,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-15 20:44:01,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:01,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-15 20:44:01,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:01,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-15 20:44:01,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:01,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 20:44:01,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:01,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-15 20:44:01,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:01,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-15 20:44:01,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:01,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-15 20:44:01,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:01,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-15 20:44:01,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:01,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-15 20:44:01,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:01,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 20:44:01,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:01,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-15 20:44:01,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:01,460 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-15 20:44:01,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:44:01,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102276873] [2023-12-15 20:44:01,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102276873] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:44:01,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:44:01,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-15 20:44:01,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520754851] [2023-12-15 20:44:01,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:44:01,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 20:44:01,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:44:01,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 20:44:01,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-12-15 20:44:01,462 INFO L87 Difference]: Start difference. First operand 129 states and 178 transitions. Second operand has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-15 20:44:02,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:44:02,343 INFO L93 Difference]: Finished difference Result 154 states and 206 transitions. [2023-12-15 20:44:02,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-15 20:44:02,344 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 87 [2023-12-15 20:44:02,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:44:02,345 INFO L225 Difference]: With dead ends: 154 [2023-12-15 20:44:02,345 INFO L226 Difference]: Without dead ends: 152 [2023-12-15 20:44:02,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2023-12-15 20:44:02,346 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 73 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 20:44:02,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 229 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 20:44:02,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2023-12-15 20:44:02,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 131. [2023-12-15 20:44:02,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 81 states have (on average 1.1975308641975309) internal successors, (97), 81 states have internal predecessors, (97), 42 states have call successors, (42), 7 states have call predecessors, (42), 7 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-15 20:44:02,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 181 transitions. [2023-12-15 20:44:02,358 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 181 transitions. Word has length 87 [2023-12-15 20:44:02,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:44:02,358 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 181 transitions. [2023-12-15 20:44:02,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-15 20:44:02,358 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 181 transitions. [2023-12-15 20:44:02,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-15 20:44:02,359 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:44:02,359 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:44:02,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-15 20:44:02,359 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:44:02,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:44:02,359 INFO L85 PathProgramCache]: Analyzing trace with hash 461556868, now seen corresponding path program 1 times [2023-12-15 20:44:02,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:44:02,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238828661] [2023-12-15 20:44:02,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:44:02,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:44:02,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:05,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 20:44:05,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:05,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 20:44:05,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:05,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-15 20:44:05,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:05,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-15 20:44:05,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:05,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-15 20:44:05,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:05,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-15 20:44:05,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:05,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 20:44:05,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:05,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-15 20:44:05,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:05,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-15 20:44:05,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:05,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-15 20:44:05,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:05,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-15 20:44:05,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:05,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-15 20:44:05,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:05,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 20:44:05,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:05,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-15 20:44:05,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:05,181 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-15 20:44:05,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:44:05,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238828661] [2023-12-15 20:44:05,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238828661] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:44:05,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:44:05,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-15 20:44:05,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837773168] [2023-12-15 20:44:05,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:44:05,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-15 20:44:05,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:44:05,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-15 20:44:05,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-12-15 20:44:05,183 INFO L87 Difference]: Start difference. First operand 131 states and 181 transitions. Second operand has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-15 20:44:06,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:44:06,236 INFO L93 Difference]: Finished difference Result 150 states and 200 transitions. [2023-12-15 20:44:06,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-15 20:44:06,237 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 87 [2023-12-15 20:44:06,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:44:06,238 INFO L225 Difference]: With dead ends: 150 [2023-12-15 20:44:06,239 INFO L226 Difference]: Without dead ends: 148 [2023-12-15 20:44:06,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2023-12-15 20:44:06,240 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 77 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 20:44:06,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 228 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 20:44:06,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2023-12-15 20:44:06,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 129. [2023-12-15 20:44:06,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 79 states have (on average 1.1898734177215189) internal successors, (94), 79 states have internal predecessors, (94), 42 states have call successors, (42), 7 states have call predecessors, (42), 7 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-15 20:44:06,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 178 transitions. [2023-12-15 20:44:06,260 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 178 transitions. Word has length 87 [2023-12-15 20:44:06,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:44:06,260 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 178 transitions. [2023-12-15 20:44:06,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-15 20:44:06,260 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 178 transitions. [2023-12-15 20:44:06,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-12-15 20:44:06,262 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:44:06,262 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:44:06,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-15 20:44:06,262 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:44:06,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:44:06,262 INFO L85 PathProgramCache]: Analyzing trace with hash 324235561, now seen corresponding path program 1 times [2023-12-15 20:44:06,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:44:06,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150749872] [2023-12-15 20:44:06,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:44:06,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:44:06,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:09,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 20:44:09,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:09,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 20:44:09,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:09,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-15 20:44:09,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:09,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-15 20:44:09,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:09,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-15 20:44:09,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:09,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-15 20:44:09,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:09,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 20:44:09,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:09,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-15 20:44:09,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:09,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-15 20:44:09,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:09,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-15 20:44:09,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:09,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-15 20:44:09,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:09,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-15 20:44:09,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:09,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 20:44:09,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:09,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-15 20:44:09,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:09,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-15 20:44:09,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:09,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-15 20:44:09,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:09,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-15 20:44:09,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:09,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-15 20:44:09,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:09,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-15 20:44:09,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:09,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-12-15 20:44:09,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:09,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-15 20:44:09,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:09,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-15 20:44:09,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:09,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-15 20:44:09,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:09,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-12-15 20:44:09,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:09,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-15 20:44:09,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:09,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-15 20:44:09,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:09,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-12-15 20:44:09,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:09,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-15 20:44:09,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:09,705 INFO L134 CoverageAnalysis]: Checked inductivity of 1539 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2023-12-15 20:44:09,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:44:09,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150749872] [2023-12-15 20:44:09,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150749872] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 20:44:09,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542534480] [2023-12-15 20:44:09,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:44:09,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:44:09,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:44:09,708 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) [2023-12-15 20:44:09,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 20:44:09,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:09,812 INFO L262 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 20:44:09,823 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:44:10,019 INFO L134 CoverageAnalysis]: Checked inductivity of 1539 backedges. 914 proven. 33 refuted. 0 times theorem prover too weak. 592 trivial. 0 not checked. [2023-12-15 20:44:10,019 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 20:44:10,204 INFO L134 CoverageAnalysis]: Checked inductivity of 1539 backedges. 31 proven. 75 refuted. 0 times theorem prover too weak. 1433 trivial. 0 not checked. [2023-12-15 20:44:10,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542534480] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 20:44:10,204 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 20:44:10,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 5] total 21 [2023-12-15 20:44:10,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805965976] [2023-12-15 20:44:10,204 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 20:44:10,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-15 20:44:10,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:44:10,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-15 20:44:10,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2023-12-15 20:44:10,206 INFO L87 Difference]: Start difference. First operand 129 states and 178 transitions. Second operand has 21 states, 21 states have (on average 3.9047619047619047) internal successors, (82), 21 states have internal predecessors, (82), 5 states have call successors, (78), 3 states have call predecessors, (78), 5 states have return successors, (80), 5 states have call predecessors, (80), 5 states have call successors, (80) [2023-12-15 20:44:14,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:44:14,538 INFO L93 Difference]: Finished difference Result 288 states and 378 transitions. [2023-12-15 20:44:14,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-12-15 20:44:14,539 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.9047619047619047) internal successors, (82), 21 states have internal predecessors, (82), 5 states have call successors, (78), 3 states have call predecessors, (78), 5 states have return successors, (80), 5 states have call predecessors, (80), 5 states have call successors, (80) Word has length 170 [2023-12-15 20:44:14,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:44:14,540 INFO L225 Difference]: With dead ends: 288 [2023-12-15 20:44:14,540 INFO L226 Difference]: Without dead ends: 245 [2023-12-15 20:44:14,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 398 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1611 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=825, Invalid=4577, Unknown=0, NotChecked=0, Total=5402 [2023-12-15 20:44:14,542 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 395 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 945 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 1131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-15 20:44:14,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [398 Valid, 363 Invalid, 1131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 945 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-15 20:44:14,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2023-12-15 20:44:14,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 144. [2023-12-15 20:44:14,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 90 states have (on average 1.1444444444444444) internal successors, (103), 90 states have internal predecessors, (103), 42 states have call successors, (42), 11 states have call predecessors, (42), 11 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-15 20:44:14,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 187 transitions. [2023-12-15 20:44:14,560 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 187 transitions. Word has length 170 [2023-12-15 20:44:14,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:44:14,560 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 187 transitions. [2023-12-15 20:44:14,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.9047619047619047) internal successors, (82), 21 states have internal predecessors, (82), 5 states have call successors, (78), 3 states have call predecessors, (78), 5 states have return successors, (80), 5 states have call predecessors, (80), 5 states have call successors, (80) [2023-12-15 20:44:14,560 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 187 transitions. [2023-12-15 20:44:14,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-15 20:44:14,561 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:44:14,561 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:44:14,566 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-15 20:44:14,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-15 20:44:14,767 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:44:14,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:44:14,767 INFO L85 PathProgramCache]: Analyzing trace with hash -774169141, now seen corresponding path program 1 times [2023-12-15 20:44:14,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:44:14,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132063845] [2023-12-15 20:44:14,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:44:14,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:44:14,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:16,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 20:44:16,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:16,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 20:44:16,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:16,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-15 20:44:16,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:16,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-15 20:44:16,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:16,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-15 20:44:16,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:16,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-15 20:44:16,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:16,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 20:44:16,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:16,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-15 20:44:16,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:16,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-15 20:44:16,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:16,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-15 20:44:16,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:16,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-15 20:44:16,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:16,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-15 20:44:16,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:16,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 20:44:16,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:16,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-15 20:44:16,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:16,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-15 20:44:16,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:16,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-15 20:44:16,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:16,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-15 20:44:16,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:16,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-15 20:44:16,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:16,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-15 20:44:16,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:16,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-12-15 20:44:16,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:16,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-15 20:44:16,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:16,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-15 20:44:16,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:16,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-15 20:44:16,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:16,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-12-15 20:44:16,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:16,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-15 20:44:16,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:16,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-15 20:44:16,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:16,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-12-15 20:44:16,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:16,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-15 20:44:16,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:16,759 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 26 proven. 2 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2023-12-15 20:44:16,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:44:16,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132063845] [2023-12-15 20:44:16,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132063845] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 20:44:16,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9213351] [2023-12-15 20:44:16,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:44:16,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:44:16,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:44:16,769 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) [2023-12-15 20:44:16,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 20:44:16,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:44:16,852 INFO L262 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 67 conjunts are in the unsatisfiable core [2023-12-15 20:44:16,857 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-15 20:44:39,852 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 20:44:39,872 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 20:44:39,877 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 [2023-12-15 20:44:39,881 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 20:44:40,078 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,SelfDestructingSolverStorable11 [2023-12-15 20:44:40,079 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 173 with TraceHistMax 28,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-19-2-2-2-2-2-2-2-3-2-3-2-3-2-2-2-2-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-2-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-55-3-3-3-3-3-3-4-3-4-4-4-4-4-4-3-3-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-2-2-2-1 context. [2023-12-15 20:44:40,082 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:44:40,084 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 20:44:40,085 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 08:44:40 BoogieIcfgContainer [2023-12-15 20:44:40,086 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 20:44:40,086 INFO L158 Benchmark]: Toolchain (without parser) took 60505.75ms. Allocated memory was 199.2MB in the beginning and 979.4MB in the end (delta: 780.1MB). Free memory was 147.1MB in the beginning and 397.1MB in the end (delta: -250.0MB). Peak memory consumption was 582.6MB. Max. memory is 8.0GB. [2023-12-15 20:44:40,086 INFO L158 Benchmark]: CDTParser took 0.49ms. Allocated memory is still 199.2MB. Free memory is still 146.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 20:44:40,086 INFO L158 Benchmark]: CACSL2BoogieTranslator took 243.49ms. Allocated memory is still 199.2MB. Free memory was 147.1MB in the beginning and 134.0MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-15 20:44:40,086 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.98ms. Allocated memory is still 199.2MB. Free memory was 134.0MB in the beginning and 130.9MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-15 20:44:40,087 INFO L158 Benchmark]: Boogie Preprocessor took 71.86ms. Allocated memory is still 199.2MB. Free memory was 130.9MB in the beginning and 124.6MB in the end (delta: 6.2MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. [2023-12-15 20:44:40,087 INFO L158 Benchmark]: RCFGBuilder took 363.03ms. Allocated memory is still 199.2MB. Free memory was 124.6MB in the beginning and 104.7MB in the end (delta: 19.9MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2023-12-15 20:44:40,087 INFO L158 Benchmark]: TraceAbstraction took 59781.06ms. Allocated memory was 199.2MB in the beginning and 979.4MB in the end (delta: 780.1MB). Free memory was 104.1MB in the beginning and 397.1MB in the end (delta: -293.0MB). Peak memory consumption was 539.6MB. Max. memory is 8.0GB. [2023-12-15 20:44:40,088 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49ms. Allocated memory is still 199.2MB. Free memory is still 146.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 243.49ms. Allocated memory is still 199.2MB. Free memory was 147.1MB in the beginning and 134.0MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 39.98ms. Allocated memory is still 199.2MB. Free memory was 134.0MB in the beginning and 130.9MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 71.86ms. Allocated memory is still 199.2MB. Free memory was 130.9MB in the beginning and 124.6MB in the end (delta: 6.2MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. * RCFGBuilder took 363.03ms. Allocated memory is still 199.2MB. Free memory was 124.6MB in the beginning and 104.7MB in the end (delta: 19.9MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * TraceAbstraction took 59781.06ms. Allocated memory was 199.2MB in the beginning and 979.4MB in the end (delta: 780.1MB). Free memory was 104.1MB in the beginning and 397.1MB in the end (delta: -293.0MB). Peak memory consumption was 539.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 173 with TraceHistMax 28,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-19-2-2-2-2-2-2-2-3-2-3-2-3-2-2-2-2-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-2-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-55-3-3-3-3-3-3-4-3-4-4-4-4-4-4-3-3-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-2-2-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 59.7s, OverallIterations: 12, TraceHistogramMax: 28, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 9.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1035 SdHoareTripleChecker+Valid, 3.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1032 mSDsluCounter, 2181 SdHoareTripleChecker+Invalid, 2.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1599 mSDsCounter, 547 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2561 IncrementalHoareTripleChecker+Invalid, 3108 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 547 mSolverCounterUnsat, 582 mSDtfsCounter, 2561 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 924 GetRequests, 741 SyntacticMatches, 1 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1853 ImplicationChecksByTransitivity, 7.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=144occurred in iteration=11, InterpolantAutomatonStates: 153, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 277 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 23.6s InterpolantComputationTime, 1200 NumberOfCodeBlocks, 1200 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1357 ConstructedInterpolants, 0 QuantifiedInterpolants, 9346 SizeOfPredicates, 4 NumberOfNonLiveVariables, 384 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 13 InterpolantComputations, 10 PerfectInterpolantSequences, 8122/8257 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