/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_fillercode_fillercodesize_ps-cn-25_file-34.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 07:18:47,880 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 07:18:47,923 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 07:18:47,926 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 07:18:47,926 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 07:18:47,952 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 07:18:47,953 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 07:18:47,953 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 07:18:47,953 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 07:18:47,954 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 07:18:47,954 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 07:18:47,954 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 07:18:47,955 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 07:18:47,955 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 07:18:47,955 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 07:18:47,955 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 07:18:47,956 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 07:18:47,956 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 07:18:47,956 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 07:18:47,956 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 07:18:47,956 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 07:18:47,960 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 07:18:47,961 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 07:18:47,961 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 07:18:47,963 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 07:18:47,963 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 07:18:47,964 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 07:18:47,964 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 07:18:47,965 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 07:18:47,965 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 07:18:47,966 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 07:18:47,966 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 07:18:47,966 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 07:18:47,966 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 07:18:47,966 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 07:18:47,966 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 07:18:47,967 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 07:18:47,967 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 07:18:47,967 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 07:18:47,967 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 07:18:47,967 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 07:18:47,967 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 07:18:47,967 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 07:18:47,967 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 07:18:48,231 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 07:18:48,256 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 07:18:48,259 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 07:18:48,260 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 07:18:48,260 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 07:18:48,261 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-34.i [2023-12-19 07:18:49,519 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 07:18:49,712 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 07:18:49,713 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-34.i [2023-12-19 07:18:49,724 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5772358ae/dedf5cb699a9490f98b59b3272bb7a42/FLAG7b1e4f259 [2023-12-19 07:18:49,738 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5772358ae/dedf5cb699a9490f98b59b3272bb7a42 [2023-12-19 07:18:49,740 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 07:18:49,741 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 07:18:49,743 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 07:18:49,743 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 07:18:49,747 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 07:18:49,747 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 07:18:49" (1/1) ... [2023-12-19 07:18:49,748 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29852d8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:18:49, skipping insertion in model container [2023-12-19 07:18:49,748 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 07:18:49" (1/1) ... [2023-12-19 07:18:49,782 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 07:18:49,904 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_fillercode_fillercodesize_ps-cn-25_file-34.i[915,928] [2023-12-19 07:18:49,976 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 07:18:49,985 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 07:18:49,993 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_fillercode_fillercodesize_ps-cn-25_file-34.i[915,928] [2023-12-19 07:18:50,029 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 07:18:50,042 INFO L206 MainTranslator]: Completed translation [2023-12-19 07:18:50,042 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:18:50 WrapperNode [2023-12-19 07:18:50,042 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 07:18:50,043 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 07:18:50,043 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 07:18:50,043 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 07:18:50,048 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:18:50" (1/1) ... [2023-12-19 07:18:50,056 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:18:50" (1/1) ... [2023-12-19 07:18:50,092 INFO L138 Inliner]: procedures = 26, calls = 40, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 244 [2023-12-19 07:18:50,093 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 07:18:50,093 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 07:18:50,093 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 07:18:50,093 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 07:18:50,112 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:18:50" (1/1) ... [2023-12-19 07:18:50,113 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:18:50" (1/1) ... [2023-12-19 07:18:50,117 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:18:50" (1/1) ... [2023-12-19 07:18:50,130 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-19 07:18:50,130 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:18:50" (1/1) ... [2023-12-19 07:18:50,131 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:18:50" (1/1) ... [2023-12-19 07:18:50,138 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:18:50" (1/1) ... [2023-12-19 07:18:50,141 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:18:50" (1/1) ... [2023-12-19 07:18:50,143 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:18:50" (1/1) ... [2023-12-19 07:18:50,144 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:18:50" (1/1) ... [2023-12-19 07:18:50,147 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 07:18:50,148 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 07:18:50,148 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 07:18:50,148 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 07:18:50,148 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:18:50" (1/1) ... [2023-12-19 07:18:50,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 07:18:50,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:18:50,194 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-19 07:18:50,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-19 07:18:50,221 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 07:18:50,222 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 07:18:50,222 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 07:18:50,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 07:18:50,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 07:18:50,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 07:18:50,311 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 07:18:50,314 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 07:18:50,766 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 07:18:50,800 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 07:18:50,801 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 07:18:50,801 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 07:18:50 BoogieIcfgContainer [2023-12-19 07:18:50,801 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 07:18:50,804 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 07:18:50,804 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 07:18:50,807 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 07:18:50,807 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 07:18:49" (1/3) ... [2023-12-19 07:18:50,808 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bd8210b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 07:18:50, skipping insertion in model container [2023-12-19 07:18:50,808 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:18:50" (2/3) ... [2023-12-19 07:18:50,809 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bd8210b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 07:18:50, skipping insertion in model container [2023-12-19 07:18:50,809 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 07:18:50" (3/3) ... [2023-12-19 07:18:50,810 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-25_file-34.i [2023-12-19 07:18:50,827 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 07:18:50,827 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 07:18:50,870 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 07:18:50,874 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;@3063336, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 07:18:50,875 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 07:18:50,878 INFO L276 IsEmpty]: Start isEmpty. Operand has 89 states, 59 states have (on average 1.5423728813559323) internal successors, (91), 60 states have internal predecessors, (91), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-19 07:18:50,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-12-19 07:18:50,888 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:18:50,889 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:18:50,889 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:18:50,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:18:50,893 INFO L85 PathProgramCache]: Analyzing trace with hash 366962392, now seen corresponding path program 1 times [2023-12-19 07:18:50,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:18:50,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252092737] [2023-12-19 07:18:50,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:18:50,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:18:50,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:18:51,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:18:51,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252092737] [2023-12-19 07:18:51,067 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-19 07:18:51,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020052958] [2023-12-19 07:18:51,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:18:51,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:18:51,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:18:51,087 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:18:51,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 07:18:51,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:18:51,272 INFO L262 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 07:18:51,281 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:18:51,319 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 1352 trivial. 0 not checked. [2023-12-19 07:18:51,319 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:18:51,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020052958] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:18:51,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:18:51,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 07:18:51,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408276326] [2023-12-19 07:18:51,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:18:51,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 07:18:51,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:18:51,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 07:18:51,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 07:18:51,364 INFO L87 Difference]: Start difference. First operand has 89 states, 59 states have (on average 1.5423728813559323) internal successors, (91), 60 states have internal predecessors, (91), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Second operand has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 2 states have call successors, (27) [2023-12-19 07:18:51,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:18:51,397 INFO L93 Difference]: Finished difference Result 175 states and 315 transitions. [2023-12-19 07:18:51,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 07:18:51,399 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 2 states have call successors, (27) Word has length 173 [2023-12-19 07:18:51,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:18:51,405 INFO L225 Difference]: With dead ends: 175 [2023-12-19 07:18:51,405 INFO L226 Difference]: Without dead ends: 87 [2023-12-19 07:18:51,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 07:18:51,410 INFO L413 NwaCegarLoop]: 137 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, 137 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 [2023-12-19 07:18:51,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 137 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:18:51,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-12-19 07:18:51,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2023-12-19 07:18:51,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 58 states have (on average 1.4827586206896552) internal successors, (86), 58 states have internal predecessors, (86), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-19 07:18:51,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 140 transitions. [2023-12-19 07:18:51,448 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 140 transitions. Word has length 173 [2023-12-19 07:18:51,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:18:51,448 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 140 transitions. [2023-12-19 07:18:51,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 2 states have call successors, (27) [2023-12-19 07:18:51,448 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 140 transitions. [2023-12-19 07:18:51,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-12-19 07:18:51,451 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:18:51,451 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:18:51,459 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-19 07:18:51,656 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,SelfDestructingSolverStorable0 [2023-12-19 07:18:51,657 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:18:51,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:18:51,658 INFO L85 PathProgramCache]: Analyzing trace with hash -192640170, now seen corresponding path program 1 times [2023-12-19 07:18:51,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:18:51,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419999798] [2023-12-19 07:18:51,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:18:51,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:18:51,710 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:18:51,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [13260710] [2023-12-19 07:18:51,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:18:51,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:18:51,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:18:51,713 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:18:51,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 07:18:51,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:18:51,849 INFO L262 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 07:18:51,854 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:18:52,059 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-12-19 07:18:52,060 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:18:52,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:18:52,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419999798] [2023-12-19 07:18:52,060 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:18:52,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13260710] [2023-12-19 07:18:52,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13260710] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:18:52,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:18:52,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 07:18:52,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127385807] [2023-12-19 07:18:52,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:18:52,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 07:18:52,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:18:52,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 07:18:52,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 07:18:52,063 INFO L87 Difference]: Start difference. First operand 87 states and 140 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 07:18:52,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:18:52,260 INFO L93 Difference]: Finished difference Result 260 states and 417 transitions. [2023-12-19 07:18:52,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 07:18:52,260 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 173 [2023-12-19 07:18:52,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:18:52,263 INFO L225 Difference]: With dead ends: 260 [2023-12-19 07:18:52,263 INFO L226 Difference]: Without dead ends: 174 [2023-12-19 07:18:52,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 07:18:52,264 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 142 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 07:18:52,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 504 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 07:18:52,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2023-12-19 07:18:52,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 89. [2023-12-19 07:18:52,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 60 states have (on average 1.4666666666666666) internal successors, (88), 60 states have internal predecessors, (88), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-19 07:18:52,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 142 transitions. [2023-12-19 07:18:52,281 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 142 transitions. Word has length 173 [2023-12-19 07:18:52,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:18:52,288 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 142 transitions. [2023-12-19 07:18:52,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 07:18:52,289 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 142 transitions. [2023-12-19 07:18:52,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-12-19 07:18:52,291 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:18:52,291 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:18:52,307 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-19 07:18:52,497 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,SelfDestructingSolverStorable1 [2023-12-19 07:18:52,497 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:18:52,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:18:52,498 INFO L85 PathProgramCache]: Analyzing trace with hash 2066215861, now seen corresponding path program 1 times [2023-12-19 07:18:52,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:18:52,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205390887] [2023-12-19 07:18:52,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:18:52,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:18:52,547 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:18:52,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [649554825] [2023-12-19 07:18:52,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:18:52,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:18:52,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:18:52,557 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:18:52,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 07:18:52,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:18:52,666 INFO L262 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 07:18:52,670 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:18:53,129 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-12-19 07:18:53,129 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:18:53,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:18:53,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205390887] [2023-12-19 07:18:53,130 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:18:53,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649554825] [2023-12-19 07:18:53,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [649554825] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:18:53,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:18:53,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 07:18:53,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932167973] [2023-12-19 07:18:53,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:18:53,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 07:18:53,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:18:53,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 07:18:53,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 07:18:53,133 INFO L87 Difference]: Start difference. First operand 89 states and 142 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 07:18:53,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:18:53,178 INFO L93 Difference]: Finished difference Result 294 states and 468 transitions. [2023-12-19 07:18:53,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 07:18:53,178 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 174 [2023-12-19 07:18:53,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:18:53,180 INFO L225 Difference]: With dead ends: 294 [2023-12-19 07:18:53,180 INFO L226 Difference]: Without dead ends: 206 [2023-12-19 07:18:53,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 07:18:53,181 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 205 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:18:53,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 400 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:18:53,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2023-12-19 07:18:53,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 177. [2023-12-19 07:18:53,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 120 states have (on average 1.4583333333333333) internal successors, (175), 120 states have internal predecessors, (175), 54 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-19 07:18:53,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 283 transitions. [2023-12-19 07:18:53,202 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 283 transitions. Word has length 174 [2023-12-19 07:18:53,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:18:53,203 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 283 transitions. [2023-12-19 07:18:53,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 07:18:53,203 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 283 transitions. [2023-12-19 07:18:53,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-12-19 07:18:53,204 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:18:53,204 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:18:53,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 07:18:53,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:18:53,411 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:18:53,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:18:53,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1873636466, now seen corresponding path program 1 times [2023-12-19 07:18:53,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:18:53,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829009860] [2023-12-19 07:18:53,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:18:53,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:18:53,440 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:18:53,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1490958640] [2023-12-19 07:18:53,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:18:53,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:18:53,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:18:53,454 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:18:53,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 07:18:53,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:18:53,648 INFO L262 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 40 conjunts are in the unsatisfiable core [2023-12-19 07:18:53,653 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:18:57,822 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 591 proven. 171 refuted. 0 times theorem prover too weak. 642 trivial. 0 not checked. [2023-12-19 07:18:57,822 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:19:01,400 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-12-19 07:19:01,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:19:01,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829009860] [2023-12-19 07:19:01,401 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:19:01,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490958640] [2023-12-19 07:19:01,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490958640] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 07:19:01,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 07:19:01,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [21] total 28 [2023-12-19 07:19:01,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934504372] [2023-12-19 07:19:01,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:19:01,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 07:19:01,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:19:01,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 07:19:01,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=608, Unknown=0, NotChecked=0, Total=756 [2023-12-19 07:19:01,405 INFO L87 Difference]: Start difference. First operand 177 states and 283 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 07:19:10,185 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.94s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 07:19:20,613 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 07:19:26,631 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 07:19:38,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:19:38,518 INFO L93 Difference]: Finished difference Result 479 states and 747 transitions. [2023-12-19 07:19:38,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-19 07:19:38,519 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 175 [2023-12-19 07:19:38,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:19:38,522 INFO L225 Difference]: With dead ends: 479 [2023-12-19 07:19:38,522 INFO L226 Difference]: Without dead ends: 303 [2023-12-19 07:19:38,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 322 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 383 ImplicationChecksByTransitivity, 18.0s TimeCoverageRelationStatistics Valid=222, Invalid=1037, Unknown=1, NotChecked=0, Total=1260 [2023-12-19 07:19:38,524 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 295 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 8 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 676 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.2s IncrementalHoareTripleChecker+Time [2023-12-19 07:19:38,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 676 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 268 Invalid, 2 Unknown, 0 Unchecked, 21.2s Time] [2023-12-19 07:19:38,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2023-12-19 07:19:38,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 218. [2023-12-19 07:19:38,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 154 states have (on average 1.4350649350649352) internal successors, (221), 155 states have internal predecessors, (221), 59 states have call successors, (59), 4 states have call predecessors, (59), 4 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2023-12-19 07:19:38,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 339 transitions. [2023-12-19 07:19:38,574 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 339 transitions. Word has length 175 [2023-12-19 07:19:38,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:19:38,575 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 339 transitions. [2023-12-19 07:19:38,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 07:19:38,575 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 339 transitions. [2023-12-19 07:19:38,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-12-19 07:19:38,577 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:19:38,577 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:19:38,584 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 07:19:38,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:19:38,785 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:19:38,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:19:38,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1816378164, now seen corresponding path program 1 times [2023-12-19 07:19:38,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:19:38,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767692601] [2023-12-19 07:19:38,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:19:38,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:19:38,847 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:19:38,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [670745890] [2023-12-19 07:19:38,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:19:38,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:19:38,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:19:38,860 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:19:38,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 07:19:39,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:19:39,012 INFO L262 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-19 07:19:39,017 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:19:43,066 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-12-19 07:19:43,067 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:19:43,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:19:43,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767692601] [2023-12-19 07:19:43,072 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:19:43,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670745890] [2023-12-19 07:19:43,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670745890] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:19:43,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:19:43,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 07:19:43,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478495038] [2023-12-19 07:19:43,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:19:43,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 07:19:43,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:19:43,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 07:19:43,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-12-19 07:19:43,075 INFO L87 Difference]: Start difference. First operand 218 states and 339 transitions. Second operand has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 07:19:50,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:19:50,145 INFO L93 Difference]: Finished difference Result 764 states and 1174 transitions. [2023-12-19 07:19:50,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-19 07:19:50,146 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 175 [2023-12-19 07:19:50,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:19:50,149 INFO L225 Difference]: With dead ends: 764 [2023-12-19 07:19:50,149 INFO L226 Difference]: Without dead ends: 554 [2023-12-19 07:19:50,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2023-12-19 07:19:50,150 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 376 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 711 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 737 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-12-19 07:19:50,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [376 Valid, 737 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 711 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-12-19 07:19:50,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2023-12-19 07:19:50,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 434. [2023-12-19 07:19:50,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 312 states have (on average 1.4262820512820513) internal successors, (445), 313 states have internal predecessors, (445), 113 states have call successors, (113), 8 states have call predecessors, (113), 8 states have return successors, (113), 112 states have call predecessors, (113), 113 states have call successors, (113) [2023-12-19 07:19:50,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 671 transitions. [2023-12-19 07:19:50,190 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 671 transitions. Word has length 175 [2023-12-19 07:19:50,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:19:50,190 INFO L495 AbstractCegarLoop]: Abstraction has 434 states and 671 transitions. [2023-12-19 07:19:50,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 07:19:50,190 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 671 transitions. [2023-12-19 07:19:50,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-12-19 07:19:50,191 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:19:50,192 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:19:50,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 07:19:50,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:19:50,397 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:19:50,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:19:50,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1611984204, now seen corresponding path program 1 times [2023-12-19 07:19:50,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:19:50,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626934490] [2023-12-19 07:19:50,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:19:50,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:19:50,430 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:19:50,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [602235224] [2023-12-19 07:19:50,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:19:50,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:19:50,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:19:50,436 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:19:50,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 07:19:50,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:19:50,550 INFO L262 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-19 07:19:50,554 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:19:51,564 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 222 proven. 72 refuted. 0 times theorem prover too weak. 1110 trivial. 0 not checked. [2023-12-19 07:19:51,564 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:19:59,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:19:59,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626934490] [2023-12-19 07:19:59,868 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:19:59,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602235224] [2023-12-19 07:19:59,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602235224] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 07:19:59,869 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-19 07:19:59,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-12-19 07:19:59,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22857744] [2023-12-19 07:19:59,869 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-19 07:19:59,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-19 07:19:59,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:19:59,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-19 07:19:59,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2023-12-19 07:19:59,871 INFO L87 Difference]: Start difference. First operand 434 states and 671 transitions. Second operand has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 10 states have internal predecessors, (49), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2023-12-19 07:20:01,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:20:01,078 INFO L93 Difference]: Finished difference Result 1260 states and 1925 transitions. [2023-12-19 07:20:01,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-19 07:20:01,078 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 10 states have internal predecessors, (49), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 175 [2023-12-19 07:20:01,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:20:01,082 INFO L225 Difference]: With dead ends: 1260 [2023-12-19 07:20:01,082 INFO L226 Difference]: Without dead ends: 834 [2023-12-19 07:20:01,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=173, Invalid=639, Unknown=0, NotChecked=0, Total=812 [2023-12-19 07:20:01,085 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 296 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 683 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 07:20:01,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 607 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 683 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 07:20:01,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2023-12-19 07:20:01,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 694. [2023-12-19 07:20:01,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 548 states have (on average 1.436131386861314) internal successors, (787), 548 states have internal predecessors, (787), 135 states have call successors, (135), 10 states have call predecessors, (135), 10 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2023-12-19 07:20:01,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 1057 transitions. [2023-12-19 07:20:01,134 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 1057 transitions. Word has length 175 [2023-12-19 07:20:01,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:20:01,134 INFO L495 AbstractCegarLoop]: Abstraction has 694 states and 1057 transitions. [2023-12-19 07:20:01,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 10 states have internal predecessors, (49), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2023-12-19 07:20:01,134 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 1057 transitions. [2023-12-19 07:20:01,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-12-19 07:20:01,136 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:20:01,136 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:20:01,156 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-19 07:20:01,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:20:01,342 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:20:01,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:20:01,342 INFO L85 PathProgramCache]: Analyzing trace with hash -252040515, now seen corresponding path program 1 times [2023-12-19 07:20:01,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:20:01,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676215946] [2023-12-19 07:20:01,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:20:01,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:20:01,365 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:20:01,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [559263565] [2023-12-19 07:20:01,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:20:01,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:20:01,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:20:01,366 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:20:01,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 07:20:01,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:20:01,502 INFO L262 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-19 07:20:01,505 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:20:02,895 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 618 proven. 123 refuted. 0 times theorem prover too weak. 663 trivial. 0 not checked. [2023-12-19 07:20:02,895 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:20:12,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:20:12,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676215946] [2023-12-19 07:20:12,742 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:20:12,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559263565] [2023-12-19 07:20:12,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559263565] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 07:20:12,742 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-19 07:20:12,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2023-12-19 07:20:12,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758762207] [2023-12-19 07:20:12,743 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-19 07:20:12,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-19 07:20:12,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:20:12,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-19 07:20:12,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2023-12-19 07:20:12,744 INFO L87 Difference]: Start difference. First operand 694 states and 1057 transitions. Second operand has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 12 states have internal predecessors, (55), 3 states have call successors, (27), 3 states have call predecessors, (27), 5 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2023-12-19 07:20:13,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:20:13,704 INFO L93 Difference]: Finished difference Result 1092 states and 1635 transitions. [2023-12-19 07:20:13,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-19 07:20:13,705 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 12 states have internal predecessors, (55), 3 states have call successors, (27), 3 states have call predecessors, (27), 5 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 175 [2023-12-19 07:20:13,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:20:13,709 INFO L225 Difference]: With dead ends: 1092 [2023-12-19 07:20:13,709 INFO L226 Difference]: Without dead ends: 822 [2023-12-19 07:20:13,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=235, Invalid=887, Unknown=0, NotChecked=0, Total=1122 [2023-12-19 07:20:13,711 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 339 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 07:20:13,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 569 Invalid, 725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 652 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 07:20:13,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2023-12-19 07:20:13,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 698. [2023-12-19 07:20:13,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 698 states, 551 states have (on average 1.426497277676951) internal successors, (786), 551 states have internal predecessors, (786), 135 states have call successors, (135), 11 states have call predecessors, (135), 11 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2023-12-19 07:20:13,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 1056 transitions. [2023-12-19 07:20:13,784 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 1056 transitions. Word has length 175 [2023-12-19 07:20:13,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:20:13,784 INFO L495 AbstractCegarLoop]: Abstraction has 698 states and 1056 transitions. [2023-12-19 07:20:13,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 12 states have internal predecessors, (55), 3 states have call successors, (27), 3 states have call predecessors, (27), 5 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2023-12-19 07:20:13,785 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 1056 transitions. [2023-12-19 07:20:13,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-12-19 07:20:13,787 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:20:13,787 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:20:13,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-19 07:20:13,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:20:13,993 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:20:13,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:20:13,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1834524816, now seen corresponding path program 1 times [2023-12-19 07:20:13,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:20:13,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853636533] [2023-12-19 07:20:13,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:20:13,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:20:14,009 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:20:14,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [675577233] [2023-12-19 07:20:14,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:20:14,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:20:14,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:20:14,010 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:20:14,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-19 07:20:14,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:20:14,115 INFO L262 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-19 07:20:14,118 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:20:14,246 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-12-19 07:20:14,247 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:20:14,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:20:14,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853636533] [2023-12-19 07:20:14,247 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:20:14,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675577233] [2023-12-19 07:20:14,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675577233] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:20:14,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:20:14,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:20:14,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64654886] [2023-12-19 07:20:14,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:20:14,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 07:20:14,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:20:14,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 07:20:14,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 07:20:14,249 INFO L87 Difference]: Start difference. First operand 698 states and 1056 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 07:20:14,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:20:14,556 INFO L93 Difference]: Finished difference Result 1208 states and 1830 transitions. [2023-12-19 07:20:14,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 07:20:14,557 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 175 [2023-12-19 07:20:14,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:20:14,560 INFO L225 Difference]: With dead ends: 1208 [2023-12-19 07:20:14,560 INFO L226 Difference]: Without dead ends: 686 [2023-12-19 07:20:14,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 07:20:14,562 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 87 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 07:20:14,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 397 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 07:20:14,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2023-12-19 07:20:14,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 652. [2023-12-19 07:20:14,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 652 states, 505 states have (on average 1.4) internal successors, (707), 505 states have internal predecessors, (707), 135 states have call successors, (135), 11 states have call predecessors, (135), 11 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2023-12-19 07:20:14,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 977 transitions. [2023-12-19 07:20:14,603 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 977 transitions. Word has length 175 [2023-12-19 07:20:14,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:20:14,603 INFO L495 AbstractCegarLoop]: Abstraction has 652 states and 977 transitions. [2023-12-19 07:20:14,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 07:20:14,603 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 977 transitions. [2023-12-19 07:20:14,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-12-19 07:20:14,605 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:20:14,605 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:20:14,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-19 07:20:14,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-19 07:20:14,810 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:20:14,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:20:14,811 INFO L85 PathProgramCache]: Analyzing trace with hash -2075173488, now seen corresponding path program 1 times [2023-12-19 07:20:14,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:20:14,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222461756] [2023-12-19 07:20:14,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:20:14,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:20:14,824 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:20:14,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [46415360] [2023-12-19 07:20:14,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:20:14,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:20:14,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:20:14,825 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:20:14,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-19 07:20:14,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:20:14,923 INFO L262 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-19 07:20:14,926 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:20:19,514 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-12-19 07:20:19,514 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:20:19,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:20:19,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222461756] [2023-12-19 07:20:19,514 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:20:19,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46415360] [2023-12-19 07:20:19,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [46415360] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:20:19,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:20:19,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 07:20:19,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802374167] [2023-12-19 07:20:19,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:20:19,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 07:20:19,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:20:19,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 07:20:19,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-12-19 07:20:19,516 INFO L87 Difference]: Start difference. First operand 652 states and 977 transitions. Second operand has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 07:20:29,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:20:29,616 INFO L93 Difference]: Finished difference Result 1052 states and 1589 transitions. [2023-12-19 07:20:29,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-19 07:20:29,617 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 175 [2023-12-19 07:20:29,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:20:29,621 INFO L225 Difference]: With dead ends: 1052 [2023-12-19 07:20:29,621 INFO L226 Difference]: Without dead ends: 836 [2023-12-19 07:20:29,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2023-12-19 07:20:29,623 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 318 mSDsluCounter, 1086 mSDsCounter, 0 mSdLazyCounter, 1165 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 1353 SdHoareTripleChecker+Invalid, 1173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2023-12-19 07:20:29,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [318 Valid, 1353 Invalid, 1173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1165 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2023-12-19 07:20:29,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2023-12-19 07:20:29,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 755. [2023-12-19 07:20:29,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 755 states, 579 states have (on average 1.3972366148531952) internal successors, (809), 579 states have internal predecessors, (809), 162 states have call successors, (162), 13 states have call predecessors, (162), 13 states have return successors, (162), 162 states have call predecessors, (162), 162 states have call successors, (162) [2023-12-19 07:20:29,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 755 states to 755 states and 1133 transitions. [2023-12-19 07:20:29,703 INFO L78 Accepts]: Start accepts. Automaton has 755 states and 1133 transitions. Word has length 175 [2023-12-19 07:20:29,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:20:29,703 INFO L495 AbstractCegarLoop]: Abstraction has 755 states and 1133 transitions. [2023-12-19 07:20:29,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 07:20:29,703 INFO L276 IsEmpty]: Start isEmpty. Operand 755 states and 1133 transitions. [2023-12-19 07:20:29,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-12-19 07:20:29,706 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:20:29,706 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:20:29,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-19 07:20:29,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:20:29,911 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:20:29,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:20:29,912 INFO L85 PathProgramCache]: Analyzing trace with hash 637195080, now seen corresponding path program 1 times [2023-12-19 07:20:29,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:20:29,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762194384] [2023-12-19 07:20:29,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:20:29,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:20:29,925 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:20:29,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [880370462] [2023-12-19 07:20:29,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:20:29,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:20:29,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:20:29,926 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:20:29,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-19 07:20:30,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:20:30,124 INFO L262 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-19 07:20:30,127 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:20:30,922 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-12-19 07:20:30,922 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:20:30,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:20:30,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762194384] [2023-12-19 07:20:30,922 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:20:30,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880370462] [2023-12-19 07:20:30,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [880370462] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:20:30,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:20:30,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 07:20:30,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569916599] [2023-12-19 07:20:30,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:20:30,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 07:20:30,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:20:30,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 07:20:30,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-12-19 07:20:30,924 INFO L87 Difference]: Start difference. First operand 755 states and 1133 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 07:20:31,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:20:31,585 INFO L93 Difference]: Finished difference Result 1226 states and 1844 transitions. [2023-12-19 07:20:31,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 07:20:31,585 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 176 [2023-12-19 07:20:31,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:20:31,589 INFO L225 Difference]: With dead ends: 1226 [2023-12-19 07:20:31,589 INFO L226 Difference]: Without dead ends: 1016 [2023-12-19 07:20:31,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-12-19 07:20:31,593 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 185 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 07:20:31,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 648 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 07:20:31,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1016 states. [2023-12-19 07:20:31,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1016 to 770. [2023-12-19 07:20:31,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 770 states, 594 states have (on average 1.4023569023569022) internal successors, (833), 594 states have internal predecessors, (833), 162 states have call successors, (162), 13 states have call predecessors, (162), 13 states have return successors, (162), 162 states have call predecessors, (162), 162 states have call successors, (162) [2023-12-19 07:20:31,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 770 states to 770 states and 1157 transitions. [2023-12-19 07:20:31,643 INFO L78 Accepts]: Start accepts. Automaton has 770 states and 1157 transitions. Word has length 176 [2023-12-19 07:20:31,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:20:31,644 INFO L495 AbstractCegarLoop]: Abstraction has 770 states and 1157 transitions. [2023-12-19 07:20:31,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 07:20:31,644 INFO L276 IsEmpty]: Start isEmpty. Operand 770 states and 1157 transitions. [2023-12-19 07:20:31,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-12-19 07:20:31,646 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:20:31,646 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:20:31,654 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-19 07:20:31,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-19 07:20:31,855 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:20:31,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:20:31,855 INFO L85 PathProgramCache]: Analyzing trace with hash 694453382, now seen corresponding path program 1 times [2023-12-19 07:20:31,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:20:31,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19169713] [2023-12-19 07:20:31,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:20:31,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:20:31,881 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:20:31,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1691056071] [2023-12-19 07:20:31,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:20:31,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:20:31,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:20:31,891 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:20:31,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-19 07:20:31,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:20:31,981 INFO L262 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-19 07:20:31,984 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:20:33,125 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-12-19 07:20:33,126 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:20:33,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:20:33,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19169713] [2023-12-19 07:20:33,126 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:20:33,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691056071] [2023-12-19 07:20:33,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691056071] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:20:33,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:20:33,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 07:20:33,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964167404] [2023-12-19 07:20:33,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:20:33,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 07:20:33,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:20:33,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 07:20:33,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-12-19 07:20:33,128 INFO L87 Difference]: Start difference. First operand 770 states and 1157 transitions. Second operand has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 11 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 07:20:34,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:20:34,646 INFO L93 Difference]: Finished difference Result 1571 states and 2364 transitions. [2023-12-19 07:20:34,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-19 07:20:34,649 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 11 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 176 [2023-12-19 07:20:34,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:20:34,655 INFO L225 Difference]: With dead ends: 1571 [2023-12-19 07:20:34,655 INFO L226 Difference]: Without dead ends: 1304 [2023-12-19 07:20:34,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=217, Invalid=713, Unknown=0, NotChecked=0, Total=930 [2023-12-19 07:20:34,658 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 576 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 765 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 576 SdHoareTripleChecker+Valid, 989 SdHoareTripleChecker+Invalid, 842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 07:20:34,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [576 Valid, 989 Invalid, 842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 765 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 07:20:34,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1304 states. [2023-12-19 07:20:34,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304 to 1041. [2023-12-19 07:20:34,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1041 states, 807 states have (on average 1.40272614622057) internal successors, (1132), 807 states have internal predecessors, (1132), 216 states have call successors, (216), 17 states have call predecessors, (216), 17 states have return successors, (216), 216 states have call predecessors, (216), 216 states have call successors, (216) [2023-12-19 07:20:34,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1041 states to 1041 states and 1564 transitions. [2023-12-19 07:20:34,736 INFO L78 Accepts]: Start accepts. Automaton has 1041 states and 1564 transitions. Word has length 176 [2023-12-19 07:20:34,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:20:34,736 INFO L495 AbstractCegarLoop]: Abstraction has 1041 states and 1564 transitions. [2023-12-19 07:20:34,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 11 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 07:20:34,737 INFO L276 IsEmpty]: Start isEmpty. Operand 1041 states and 1564 transitions. [2023-12-19 07:20:34,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-12-19 07:20:34,737 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:20:34,738 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:20:34,756 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-19 07:20:34,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-19 07:20:34,947 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:20:34,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:20:34,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1204474628, now seen corresponding path program 1 times [2023-12-19 07:20:34,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:20:34,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823090742] [2023-12-19 07:20:34,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:20:34,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:20:34,983 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:20:34,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1705220905] [2023-12-19 07:20:34,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:20:34,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:20:34,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:20:34,986 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:20:35,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-19 07:20:35,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:20:35,118 INFO L262 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-19 07:20:35,121 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:20:35,849 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-12-19 07:20:35,849 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:20:35,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:20:35,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823090742] [2023-12-19 07:20:35,850 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:20:35,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705220905] [2023-12-19 07:20:35,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1705220905] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:20:35,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:20:35,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 07:20:35,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687179149] [2023-12-19 07:20:35,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:20:35,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 07:20:35,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:20:35,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 07:20:35,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-12-19 07:20:35,851 INFO L87 Difference]: Start difference. First operand 1041 states and 1564 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 07:20:36,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:20:36,474 INFO L93 Difference]: Finished difference Result 1573 states and 2378 transitions. [2023-12-19 07:20:36,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 07:20:36,474 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 176 [2023-12-19 07:20:36,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:20:36,478 INFO L225 Difference]: With dead ends: 1573 [2023-12-19 07:20:36,478 INFO L226 Difference]: Without dead ends: 1346 [2023-12-19 07:20:36,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-12-19 07:20:36,480 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 263 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 717 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 07:20:36,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 717 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 07:20:36,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1346 states. [2023-12-19 07:20:36,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1346 to 1237. [2023-12-19 07:20:36,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1237 states, 945 states have (on average 1.4010582010582011) internal successors, (1324), 945 states have internal predecessors, (1324), 270 states have call successors, (270), 21 states have call predecessors, (270), 21 states have return successors, (270), 270 states have call predecessors, (270), 270 states have call successors, (270) [2023-12-19 07:20:36,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1237 states to 1237 states and 1864 transitions. [2023-12-19 07:20:36,573 INFO L78 Accepts]: Start accepts. Automaton has 1237 states and 1864 transitions. Word has length 176 [2023-12-19 07:20:36,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:20:36,573 INFO L495 AbstractCegarLoop]: Abstraction has 1237 states and 1864 transitions. [2023-12-19 07:20:36,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 07:20:36,573 INFO L276 IsEmpty]: Start isEmpty. Operand 1237 states and 1864 transitions. [2023-12-19 07:20:36,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-12-19 07:20:36,574 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:20:36,574 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:20:36,580 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-19 07:20:36,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-19 07:20:36,781 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:20:36,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:20:36,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1261732930, now seen corresponding path program 1 times [2023-12-19 07:20:36,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:20:36,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600935004] [2023-12-19 07:20:36,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:20:36,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:20:36,798 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:20:36,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2055541870] [2023-12-19 07:20:36,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:20:36,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:20:36,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:20:36,799 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:20:36,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-19 07:20:36,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:20:36,894 INFO L262 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-19 07:20:36,897 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:20:37,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-12-19 07:20:37,925 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:20:37,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:20:37,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600935004] [2023-12-19 07:20:37,926 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:20:37,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055541870] [2023-12-19 07:20:37,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055541870] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:20:37,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:20:37,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 07:20:37,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252638999] [2023-12-19 07:20:37,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:20:37,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 07:20:37,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:20:37,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 07:20:37,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-12-19 07:20:37,928 INFO L87 Difference]: Start difference. First operand 1237 states and 1864 transitions. Second operand has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 11 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 07:20:40,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:20:40,071 INFO L93 Difference]: Finished difference Result 1910 states and 2884 transitions. [2023-12-19 07:20:40,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-19 07:20:40,072 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 11 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 176 [2023-12-19 07:20:40,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:20:40,079 INFO L225 Difference]: With dead ends: 1910 [2023-12-19 07:20:40,079 INFO L226 Difference]: Without dead ends: 1678 [2023-12-19 07:20:40,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=217, Invalid=713, Unknown=0, NotChecked=0, Total=930 [2023-12-19 07:20:40,081 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 494 mSDsluCounter, 1198 mSDsCounter, 0 mSdLazyCounter, 1242 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 1459 SdHoareTripleChecker+Invalid, 1361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 1242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-19 07:20:40,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [494 Valid, 1459 Invalid, 1361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 1242 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-19 07:20:40,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1678 states. [2023-12-19 07:20:40,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1678 to 1458. [2023-12-19 07:20:40,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1458 states, 1108 states have (on average 1.401624548736462) internal successors, (1553), 1108 states have internal predecessors, (1553), 324 states have call successors, (324), 25 states have call predecessors, (324), 25 states have return successors, (324), 324 states have call predecessors, (324), 324 states have call successors, (324) [2023-12-19 07:20:40,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 2201 transitions. [2023-12-19 07:20:40,179 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 2201 transitions. Word has length 176 [2023-12-19 07:20:40,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:20:40,179 INFO L495 AbstractCegarLoop]: Abstraction has 1458 states and 2201 transitions. [2023-12-19 07:20:40,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 11 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 07:20:40,179 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 2201 transitions. [2023-12-19 07:20:40,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-12-19 07:20:40,180 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:20:40,180 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:20:40,207 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-19 07:20:40,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-19 07:20:40,386 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:20:40,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:20:40,386 INFO L85 PathProgramCache]: Analyzing trace with hash -114257104, now seen corresponding path program 1 times [2023-12-19 07:20:40,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:20:40,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920414735] [2023-12-19 07:20:40,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:20:40,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:20:40,415 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:20:40,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [194033581] [2023-12-19 07:20:40,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:20:40,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:20:40,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:20:40,420 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:20:40,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-19 07:20:40,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:20:40,565 INFO L262 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-19 07:20:40,581 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:20:41,695 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-12-19 07:20:41,695 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:20:41,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:20:41,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920414735] [2023-12-19 07:20:41,695 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:20:41,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194033581] [2023-12-19 07:20:41,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194033581] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:20:41,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:20:41,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-19 07:20:41,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87872341] [2023-12-19 07:20:41,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:20:41,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-19 07:20:41,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:20:41,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-19 07:20:41,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-12-19 07:20:41,696 INFO L87 Difference]: Start difference. First operand 1458 states and 2201 transitions. Second operand has 11 states, 11 states have (on average 4.0) internal successors, (44), 10 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 07:20:42,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:20:42,910 INFO L93 Difference]: Finished difference Result 2800 states and 4236 transitions. [2023-12-19 07:20:42,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 07:20:42,911 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 10 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 176 [2023-12-19 07:20:42,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:20:42,942 INFO L225 Difference]: With dead ends: 2800 [2023-12-19 07:20:42,943 INFO L226 Difference]: Without dead ends: 1612 [2023-12-19 07:20:42,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=110, Invalid=310, Unknown=0, NotChecked=0, Total=420 [2023-12-19 07:20:42,948 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 244 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 655 SdHoareTripleChecker+Invalid, 649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 07:20:42,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 655 Invalid, 649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 589 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 07:20:42,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1612 states. [2023-12-19 07:20:43,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1612 to 1488. [2023-12-19 07:20:43,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1488 states, 1138 states have (on average 1.3936731107205624) internal successors, (1586), 1138 states have internal predecessors, (1586), 324 states have call successors, (324), 25 states have call predecessors, (324), 25 states have return successors, (324), 324 states have call predecessors, (324), 324 states have call successors, (324) [2023-12-19 07:20:43,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 2234 transitions. [2023-12-19 07:20:43,099 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 2234 transitions. Word has length 176 [2023-12-19 07:20:43,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:20:43,099 INFO L495 AbstractCegarLoop]: Abstraction has 1488 states and 2234 transitions. [2023-12-19 07:20:43,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 10 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 07:20:43,100 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 2234 transitions. [2023-12-19 07:20:43,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-12-19 07:20:43,101 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:20:43,101 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:20:43,123 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-19 07:20:43,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:20:43,308 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:20:43,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:20:43,309 INFO L85 PathProgramCache]: Analyzing trace with hash -56998802, now seen corresponding path program 1 times [2023-12-19 07:20:43,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:20:43,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948881953] [2023-12-19 07:20:43,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:20:43,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:20:43,331 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:20:43,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [292218477] [2023-12-19 07:20:43,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:20:43,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:20:43,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:20:43,344 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:20:43,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-19 07:20:43,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:20:43,445 INFO L262 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-19 07:20:43,449 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:20:48,380 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-12-19 07:20:48,380 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:20:48,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:20:48,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948881953] [2023-12-19 07:20:48,380 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:20:48,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292218477] [2023-12-19 07:20:48,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292218477] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:20:48,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:20:48,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 07:20:48,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967736179] [2023-12-19 07:20:48,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:20:48,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 07:20:48,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:20:48,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 07:20:48,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-12-19 07:20:48,382 INFO L87 Difference]: Start difference. First operand 1488 states and 2234 transitions. Second operand has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 11 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 07:20:52,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:20:52,929 INFO L93 Difference]: Finished difference Result 2736 states and 4154 transitions. [2023-12-19 07:20:52,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-19 07:20:52,930 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 11 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 176 [2023-12-19 07:20:52,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:20:52,934 INFO L225 Difference]: With dead ends: 2736 [2023-12-19 07:20:52,935 INFO L226 Difference]: Without dead ends: 1590 [2023-12-19 07:20:52,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2023-12-19 07:20:52,938 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 368 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-19 07:20:52,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 611 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-19 07:20:52,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1590 states. [2023-12-19 07:20:53,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1590 to 1492. [2023-12-19 07:20:53,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1492 states, 1142 states have (on average 1.3922942206654991) internal successors, (1590), 1142 states have internal predecessors, (1590), 324 states have call successors, (324), 25 states have call predecessors, (324), 25 states have return successors, (324), 324 states have call predecessors, (324), 324 states have call successors, (324) [2023-12-19 07:20:53,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1492 states to 1492 states and 2238 transitions. [2023-12-19 07:20:53,028 INFO L78 Accepts]: Start accepts. Automaton has 1492 states and 2238 transitions. Word has length 176 [2023-12-19 07:20:53,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:20:53,028 INFO L495 AbstractCegarLoop]: Abstraction has 1492 states and 2238 transitions. [2023-12-19 07:20:53,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 11 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 07:20:53,029 INFO L276 IsEmpty]: Start isEmpty. Operand 1492 states and 2238 transitions. [2023-12-19 07:20:53,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-12-19 07:20:53,029 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:20:53,030 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:20:53,049 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-19 07:20:53,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-19 07:20:53,249 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:20:53,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:20:53,249 INFO L85 PathProgramCache]: Analyzing trace with hash -315794126, now seen corresponding path program 1 times [2023-12-19 07:20:53,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:20:53,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781011339] [2023-12-19 07:20:53,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:20:53,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:20:53,278 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:20:53,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [300407809] [2023-12-19 07:20:53,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:20:53,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:20:53,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:20:53,293 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:20:53,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-19 07:20:53,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:20:53,419 INFO L262 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-19 07:20:53,422 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:20:59,503 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-12-19 07:20:59,504 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:20:59,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:20:59,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781011339] [2023-12-19 07:20:59,504 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:20:59,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300407809] [2023-12-19 07:20:59,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [300407809] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:20:59,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:20:59,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 07:20:59,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079377503] [2023-12-19 07:20:59,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:20:59,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 07:20:59,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:20:59,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 07:20:59,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-12-19 07:20:59,506 INFO L87 Difference]: Start difference. First operand 1492 states and 2238 transitions. Second operand has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 11 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 07:21:08,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:21:08,871 INFO L93 Difference]: Finished difference Result 2378 states and 3604 transitions. [2023-12-19 07:21:08,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-19 07:21:08,871 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 11 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 176 [2023-12-19 07:21:08,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:21:08,878 INFO L225 Difference]: With dead ends: 2378 [2023-12-19 07:21:08,878 INFO L226 Difference]: Without dead ends: 1554 [2023-12-19 07:21:08,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2023-12-19 07:21:08,882 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 364 mSDsluCounter, 922 mSDsCounter, 0 mSdLazyCounter, 1101 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 1187 SdHoareTripleChecker+Invalid, 1108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-12-19 07:21:08,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [364 Valid, 1187 Invalid, 1108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1101 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2023-12-19 07:21:08,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2023-12-19 07:21:09,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1494. [2023-12-19 07:21:09,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1494 states, 1144 states have (on average 1.3916083916083917) internal successors, (1592), 1144 states have internal predecessors, (1592), 324 states have call successors, (324), 25 states have call predecessors, (324), 25 states have return successors, (324), 324 states have call predecessors, (324), 324 states have call successors, (324) [2023-12-19 07:21:09,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 2240 transitions. [2023-12-19 07:21:09,015 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 2240 transitions. Word has length 176 [2023-12-19 07:21:09,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:21:09,016 INFO L495 AbstractCegarLoop]: Abstraction has 1494 states and 2240 transitions. [2023-12-19 07:21:09,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 11 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 07:21:09,016 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 2240 transitions. [2023-12-19 07:21:09,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-12-19 07:21:09,017 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:21:09,017 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:21:09,034 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-19 07:21:09,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-19 07:21:09,224 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:21:09,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:21:09,224 INFO L85 PathProgramCache]: Analyzing trace with hash 2078563137, now seen corresponding path program 1 times [2023-12-19 07:21:09,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:21:09,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191678277] [2023-12-19 07:21:09,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:21:09,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:21:09,258 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:21:09,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [887803322] [2023-12-19 07:21:09,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:21:09,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:21:09,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:21:09,274 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:21:09,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-19 07:21:09,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:21:09,409 INFO L262 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-19 07:21:09,412 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:21:09,759 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 656 proven. 51 refuted. 0 times theorem prover too weak. 697 trivial. 0 not checked. [2023-12-19 07:21:09,759 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:21:09,952 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 27 proven. 51 refuted. 0 times theorem prover too weak. 1326 trivial. 0 not checked. [2023-12-19 07:21:09,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:21:09,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191678277] [2023-12-19 07:21:09,953 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:21:09,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [887803322] [2023-12-19 07:21:09,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [887803322] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:21:09,953 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:21:09,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2023-12-19 07:21:09,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390020970] [2023-12-19 07:21:09,953 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:21:09,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-19 07:21:09,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:21:09,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-19 07:21:09,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2023-12-19 07:21:09,954 INFO L87 Difference]: Start difference. First operand 1494 states and 2240 transitions. Second operand has 18 states, 18 states have (on average 5.055555555555555) internal successors, (91), 18 states have internal predecessors, (91), 4 states have call successors, (54), 3 states have call predecessors, (54), 5 states have return successors, (54), 4 states have call predecessors, (54), 4 states have call successors, (54) [2023-12-19 07:21:12,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:21:12,549 INFO L93 Difference]: Finished difference Result 4661 states and 6857 transitions. [2023-12-19 07:21:12,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-12-19 07:21:12,550 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.055555555555555) internal successors, (91), 18 states have internal predecessors, (91), 4 states have call successors, (54), 3 states have call predecessors, (54), 5 states have return successors, (54), 4 states have call predecessors, (54), 4 states have call successors, (54) Word has length 177 [2023-12-19 07:21:12,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:21:12,564 INFO L225 Difference]: With dead ends: 4661 [2023-12-19 07:21:12,564 INFO L226 Difference]: Without dead ends: 3734 [2023-12-19 07:21:12,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1348 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=904, Invalid=3386, Unknown=0, NotChecked=0, Total=4290 [2023-12-19 07:21:12,568 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 1624 mSDsluCounter, 1671 mSDsCounter, 0 mSdLazyCounter, 1427 mSolverCounterSat, 825 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1643 SdHoareTripleChecker+Valid, 1871 SdHoareTripleChecker+Invalid, 2252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 825 IncrementalHoareTripleChecker+Valid, 1427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-19 07:21:12,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1643 Valid, 1871 Invalid, 2252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [825 Valid, 1427 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-19 07:21:12,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3734 states. [2023-12-19 07:21:12,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3734 to 2225. [2023-12-19 07:21:12,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2225 states, 1645 states have (on average 1.3641337386018237) internal successors, (2244), 1651 states have internal predecessors, (2244), 513 states have call successors, (513), 66 states have call predecessors, (513), 66 states have return successors, (513), 507 states have call predecessors, (513), 513 states have call successors, (513) [2023-12-19 07:21:12,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2225 states to 2225 states and 3270 transitions. [2023-12-19 07:21:12,806 INFO L78 Accepts]: Start accepts. Automaton has 2225 states and 3270 transitions. Word has length 177 [2023-12-19 07:21:12,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:21:12,807 INFO L495 AbstractCegarLoop]: Abstraction has 2225 states and 3270 transitions. [2023-12-19 07:21:12,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.055555555555555) internal successors, (91), 18 states have internal predecessors, (91), 4 states have call successors, (54), 3 states have call predecessors, (54), 5 states have return successors, (54), 4 states have call predecessors, (54), 4 states have call successors, (54) [2023-12-19 07:21:12,807 INFO L276 IsEmpty]: Start isEmpty. Operand 2225 states and 3270 transitions. [2023-12-19 07:21:12,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-12-19 07:21:12,808 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:21:12,808 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:21:12,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-19 07:21:13,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-19 07:21:13,015 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:21:13,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:21:13,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1759791283, now seen corresponding path program 1 times [2023-12-19 07:21:13,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:21:13,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916930382] [2023-12-19 07:21:13,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:21:13,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:21:13,037 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:21:13,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1411462157] [2023-12-19 07:21:13,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:21:13,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:21:13,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:21:13,062 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:21:13,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-19 07:21:13,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:21:13,192 INFO L262 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-19 07:21:13,200 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:23:11,166 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-12-19 07:23:11,166 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:23:11,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:23:11,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916930382] [2023-12-19 07:23:11,167 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:23:11,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411462157] [2023-12-19 07:23:11,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411462157] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:23:11,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:23:11,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-19 07:23:11,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964886790] [2023-12-19 07:23:11,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:23:11,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-19 07:23:11,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:23:11,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-19 07:23:11,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-12-19 07:23:11,169 INFO L87 Difference]: Start difference. First operand 2225 states and 3270 transitions. Second operand has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 07:23:12,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:23:12,593 INFO L93 Difference]: Finished difference Result 4784 states and 6951 transitions. [2023-12-19 07:23:12,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-19 07:23:12,594 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 178 [2023-12-19 07:23:12,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:23:12,605 INFO L225 Difference]: With dead ends: 4784 [2023-12-19 07:23:12,605 INFO L226 Difference]: Without dead ends: 2635 [2023-12-19 07:23:12,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=129, Invalid=471, Unknown=0, NotChecked=0, Total=600 [2023-12-19 07:23:12,610 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 267 mSDsluCounter, 795 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 912 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 07:23:12,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 912 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 07:23:12,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2635 states. [2023-12-19 07:23:12,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2635 to 2268. [2023-12-19 07:23:12,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2268 states, 1688 states have (on average 1.3613744075829384) internal successors, (2298), 1694 states have internal predecessors, (2298), 513 states have call successors, (513), 66 states have call predecessors, (513), 66 states have return successors, (513), 507 states have call predecessors, (513), 513 states have call successors, (513) [2023-12-19 07:23:12,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2268 states to 2268 states and 3324 transitions. [2023-12-19 07:23:12,796 INFO L78 Accepts]: Start accepts. Automaton has 2268 states and 3324 transitions. Word has length 178 [2023-12-19 07:23:12,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:23:12,796 INFO L495 AbstractCegarLoop]: Abstraction has 2268 states and 3324 transitions. [2023-12-19 07:23:12,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 07:23:12,797 INFO L276 IsEmpty]: Start isEmpty. Operand 2268 states and 3324 transitions. [2023-12-19 07:23:12,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-12-19 07:23:12,798 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:23:12,798 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:23:12,804 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-19 07:23:13,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-19 07:23:13,003 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:23:13,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:23:13,004 INFO L85 PathProgramCache]: Analyzing trace with hash -70847541, now seen corresponding path program 1 times [2023-12-19 07:23:13,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:23:13,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236114073] [2023-12-19 07:23:13,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:23:13,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:23:13,017 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:23:13,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2122982982] [2023-12-19 07:23:13,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:23:13,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:23:13,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:23:13,019 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:23:13,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-19 07:23:13,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:23:13,145 INFO L262 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-19 07:23:13,148 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:24:30,971 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 708 proven. 45 refuted. 0 times theorem prover too weak. 651 trivial. 0 not checked. [2023-12-19 07:24:30,971 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-19 07:33:14,510 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 07:33:14,518 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-19 07:33:14,520 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 07:33:14,526 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-12-19 07:33:14,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:33:14,719 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 179 with TraceHistMax 27,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-38-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-2-1 context. [2023-12-19 07:33:14,724 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:33:14,726 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-19 07:33:14,730 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 07:33:14 BoogieIcfgContainer [2023-12-19 07:33:14,730 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-19 07:33:14,731 INFO L158 Benchmark]: Toolchain (without parser) took 864989.78ms. Allocated memory was 207.6MB in the beginning and 1.4GB in the end (delta: 1.1GB). Free memory was 157.8MB in the beginning and 610.2MB in the end (delta: -452.4MB). Peak memory consumption was 817.5MB. Max. memory is 8.0GB. [2023-12-19 07:33:14,731 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 207.6MB. Free memory is still 158.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 07:33:14,731 INFO L158 Benchmark]: CACSL2BoogieTranslator took 299.10ms. Allocated memory is still 207.6MB. Free memory was 157.6MB in the beginning and 142.5MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-19 07:33:14,731 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.70ms. Allocated memory is still 207.6MB. Free memory was 142.3MB in the beginning and 138.2MB in the end (delta: 4.1MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-19 07:33:14,731 INFO L158 Benchmark]: Boogie Preprocessor took 53.98ms. Allocated memory is still 207.6MB. Free memory was 138.2MB in the beginning and 132.8MB in the end (delta: 5.4MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-19 07:33:14,732 INFO L158 Benchmark]: RCFGBuilder took 653.46ms. Allocated memory was 207.6MB in the beginning and 293.6MB in the end (delta: 86.0MB). Free memory was 132.6MB in the beginning and 251.8MB in the end (delta: -119.1MB). Peak memory consumption was 31.9MB. Max. memory is 8.0GB. [2023-12-19 07:33:14,732 INFO L158 Benchmark]: TraceAbstraction took 863926.62ms. Allocated memory was 293.6MB in the beginning and 1.4GB in the end (delta: 1.1GB). Free memory was 251.2MB in the beginning and 610.2MB in the end (delta: -359.0MB). Peak memory consumption was 823.4MB. Max. memory is 8.0GB. [2023-12-19 07:33:14,733 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 207.6MB. Free memory is still 158.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 299.10ms. Allocated memory is still 207.6MB. Free memory was 157.6MB in the beginning and 142.5MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 49.70ms. Allocated memory is still 207.6MB. Free memory was 142.3MB in the beginning and 138.2MB in the end (delta: 4.1MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 53.98ms. Allocated memory is still 207.6MB. Free memory was 138.2MB in the beginning and 132.8MB in the end (delta: 5.4MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * RCFGBuilder took 653.46ms. Allocated memory was 207.6MB in the beginning and 293.6MB in the end (delta: 86.0MB). Free memory was 132.6MB in the beginning and 251.8MB in the end (delta: -119.1MB). Peak memory consumption was 31.9MB. Max. memory is 8.0GB. * TraceAbstraction took 863926.62ms. Allocated memory was 293.6MB in the beginning and 1.4GB in the end (delta: 1.1GB). Free memory was 251.2MB in the beginning and 610.2MB in the end (delta: -359.0MB). Peak memory consumption was 823.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 179 with TraceHistMax 27,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-38-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 89 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 863.9s, OverallIterations: 19, TraceHistogramMax: 27, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 81.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 6462 SdHoareTripleChecker+Valid, 48.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6443 mSDsluCounter, 14429 SdHoareTripleChecker+Invalid, 46.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 11435 mSDsCounter, 1446 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10077 IncrementalHoareTripleChecker+Invalid, 11525 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1446 mSolverCounterUnsat, 2994 mSDtfsCounter, 10077 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3761 GetRequests, 3381 SyntacticMatches, 0 SemanticMatches, 380 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2908 ImplicationChecksByTransitivity, 43.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2268occurred in iteration=18, InterpolantAutomatonStates: 296, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.5s AutomataMinimizationTime, 18 MinimizatonAttempts, 3694 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 172.3s InterpolantComputationTime, 3330 NumberOfCodeBlocks, 3330 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 3489 ConstructedInterpolants, 9 QuantifiedInterpolants, 31392 SizeOfPredicates, 234 NumberOfNonLiveVariables, 7903 ConjunctsInSsa, 345 ConjunctsInUnsatCore, 20 InterpolantComputations, 15 PerfectInterpolantSequences, 27612/28080 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