/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-89.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 11:07:35,110 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 11:07:35,200 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 11:07:35,205 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 11:07:35,206 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 11:07:35,234 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 11:07:35,235 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 11:07:35,235 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 11:07:35,236 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 11:07:35,239 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 11:07:35,240 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 11:07:35,240 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 11:07:35,240 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 11:07:35,241 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 11:07:35,242 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 11:07:35,242 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 11:07:35,242 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 11:07:35,242 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 11:07:35,242 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 11:07:35,243 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 11:07:35,243 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 11:07:35,243 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 11:07:35,243 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 11:07:35,244 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 11:07:35,244 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 11:07:35,244 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 11:07:35,244 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 11:07:35,244 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 11:07:35,245 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 11:07:35,245 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 11:07:35,246 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 11:07:35,246 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 11:07:35,246 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 11:07:35,247 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 11:07:35,247 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 11:07:35,247 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 11:07:35,247 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 11:07:35,247 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 11:07:35,247 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 11:07:35,247 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 11:07:35,248 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 11:07:35,248 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 11:07:35,248 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 11:07:35,248 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 11:07:35,500 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 11:07:35,525 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 11:07:35,528 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 11:07:35,529 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 11:07:35,529 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 11:07:35,530 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-89.i [2023-12-19 11:07:36,751 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 11:07:37,000 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 11:07:37,001 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-89.i [2023-12-19 11:07:37,009 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43b2300c7/49880ea762644bc8a176373c97259d9a/FLAG3c962be25 [2023-12-19 11:07:37,025 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43b2300c7/49880ea762644bc8a176373c97259d9a [2023-12-19 11:07:37,027 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 11:07:37,028 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 11:07:37,029 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 11:07:37,029 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 11:07:37,033 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 11:07:37,034 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 11:07:37" (1/1) ... [2023-12-19 11:07:37,035 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12201478 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:07:37, skipping insertion in model container [2023-12-19 11:07:37,035 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 11:07:37" (1/1) ... [2023-12-19 11:07:37,064 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 11:07:37,192 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-89.i[916,929] [2023-12-19 11:07:37,222 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 11:07:37,234 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 11:07:37,242 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-89.i[916,929] [2023-12-19 11:07:37,260 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 11:07:37,274 INFO L206 MainTranslator]: Completed translation [2023-12-19 11:07:37,274 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:07:37 WrapperNode [2023-12-19 11:07:37,274 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 11:07:37,275 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 11:07:37,275 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 11:07:37,276 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 11:07:37,286 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:07:37" (1/1) ... [2023-12-19 11:07:37,300 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:07:37" (1/1) ... [2023-12-19 11:07:37,334 INFO L138 Inliner]: procedures = 26, calls = 26, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 149 [2023-12-19 11:07:37,334 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 11:07:37,335 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 11:07:37,335 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 11:07:37,335 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 11:07:37,346 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:07:37" (1/1) ... [2023-12-19 11:07:37,346 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:07:37" (1/1) ... [2023-12-19 11:07:37,351 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:07:37" (1/1) ... [2023-12-19 11:07:37,373 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 11:07:37,373 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:07:37" (1/1) ... [2023-12-19 11:07:37,373 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:07:37" (1/1) ... [2023-12-19 11:07:37,379 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:07:37" (1/1) ... [2023-12-19 11:07:37,382 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:07:37" (1/1) ... [2023-12-19 11:07:37,383 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:07:37" (1/1) ... [2023-12-19 11:07:37,385 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:07:37" (1/1) ... [2023-12-19 11:07:37,387 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 11:07:37,408 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 11:07:37,408 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 11:07:37,408 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 11:07:37,409 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:07:37" (1/1) ... [2023-12-19 11:07:37,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 11:07:37,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 11:07:37,438 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 11:07:37,467 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 11:07:37,474 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 11:07:37,474 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 11:07:37,474 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 11:07:37,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 11:07:37,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 11:07:37,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 11:07:37,574 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 11:07:37,576 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 11:07:37,888 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 11:07:37,922 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 11:07:37,922 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 11:07:37,923 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 11:07:37 BoogieIcfgContainer [2023-12-19 11:07:37,923 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 11:07:37,925 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 11:07:37,925 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 11:07:37,928 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 11:07:37,928 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 11:07:37" (1/3) ... [2023-12-19 11:07:37,930 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3108dc44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 11:07:37, skipping insertion in model container [2023-12-19 11:07:37,930 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:07:37" (2/3) ... [2023-12-19 11:07:37,930 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3108dc44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 11:07:37, skipping insertion in model container [2023-12-19 11:07:37,930 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 11:07:37" (3/3) ... [2023-12-19 11:07:37,931 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_floatingpointinfluence_no-floats_file-89.i [2023-12-19 11:07:37,946 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 11:07:37,946 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 11:07:37,982 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 11:07:37,987 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;@7d98792d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 11:07:37,987 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 11:07:37,991 INFO L276 IsEmpty]: Start isEmpty. Operand has 55 states, 39 states have (on average 1.5384615384615385) internal successors, (60), 40 states have internal predecessors, (60), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-19 11:07:38,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-19 11:07:38,000 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 11:07:38,001 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:07:38,001 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 11:07:38,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 11:07:38,009 INFO L85 PathProgramCache]: Analyzing trace with hash 83024767, now seen corresponding path program 1 times [2023-12-19 11:07:38,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 11:07:38,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217216632] [2023-12-19 11:07:38,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:07:38,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 11:07:38,157 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 11:07:38,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [729016181] [2023-12-19 11:07:38,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:07:38,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 11:07:38,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 11:07:38,164 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 11:07:38,167 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 11:07:38,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 11:07:38,306 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 11:07:38,324 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 11:07:41,571 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 11:07:41,572 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 11:07:41,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 11:07:41,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217216632] [2023-12-19 11:07:41,572 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 11:07:41,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729016181] [2023-12-19 11:07:41,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [729016181] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 11:07:41,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 11:07:41,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 11:07:41,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404150238] [2023-12-19 11:07:41,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 11:07:41,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 11:07:41,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 11:07:41,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 11:07:41,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-19 11:07:41,615 INFO L87 Difference]: Start difference. First operand has 55 states, 39 states have (on average 1.5384615384615385) internal successors, (60), 40 states have internal predecessors, (60), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 11:07:42,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 11:07:42,221 INFO L93 Difference]: Finished difference Result 178 states and 307 transitions. [2023-12-19 11:07:42,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 11:07:42,224 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 83 [2023-12-19 11:07:42,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 11:07:42,231 INFO L225 Difference]: With dead ends: 178 [2023-12-19 11:07:42,231 INFO L226 Difference]: Without dead ends: 124 [2023-12-19 11:07:42,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-19 11:07:42,243 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 140 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 11:07:42,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 239 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 11:07:42,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2023-12-19 11:07:42,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 105. [2023-12-19 11:07:42,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 80 states have (on average 1.4375) internal successors, (115), 81 states have internal predecessors, (115), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-19 11:07:42,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 159 transitions. [2023-12-19 11:07:42,298 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 159 transitions. Word has length 83 [2023-12-19 11:07:42,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 11:07:42,300 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 159 transitions. [2023-12-19 11:07:42,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 11:07:42,301 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 159 transitions. [2023-12-19 11:07:42,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-19 11:07:42,305 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 11:07:42,305 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:07:42,315 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 11:07:42,512 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 11:07:42,513 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 11:07:42,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 11:07:42,514 INFO L85 PathProgramCache]: Analyzing trace with hash -726321859, now seen corresponding path program 1 times [2023-12-19 11:07:42,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 11:07:42,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967553457] [2023-12-19 11:07:42,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:07:42,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 11:07:42,556 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 11:07:42,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1123638098] [2023-12-19 11:07:42,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:07:42,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 11:07:42,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 11:07:42,563 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 11:07:42,584 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 11:07:42,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 11:07:42,652 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 11:07:42,659 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 11:07:44,718 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 11:07:44,718 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 11:07:44,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 11:07:44,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967553457] [2023-12-19 11:07:44,719 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 11:07:44,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123638098] [2023-12-19 11:07:44,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123638098] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 11:07:44,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 11:07:44,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 11:07:44,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102470184] [2023-12-19 11:07:44,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 11:07:44,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 11:07:44,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 11:07:44,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 11:07:44,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-19 11:07:44,722 INFO L87 Difference]: Start difference. First operand 105 states and 159 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 11:07:45,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 11:07:45,215 INFO L93 Difference]: Finished difference Result 228 states and 340 transitions. [2023-12-19 11:07:45,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 11:07:45,220 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 83 [2023-12-19 11:07:45,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 11:07:45,222 INFO L225 Difference]: With dead ends: 228 [2023-12-19 11:07:45,222 INFO L226 Difference]: Without dead ends: 124 [2023-12-19 11:07:45,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-19 11:07:45,224 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 124 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 11:07:45,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 241 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 11:07:45,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2023-12-19 11:07:45,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 95. [2023-12-19 11:07:45,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 70 states have (on average 1.4) internal successors, (98), 71 states have internal predecessors, (98), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-19 11:07:45,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 142 transitions. [2023-12-19 11:07:45,238 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 142 transitions. Word has length 83 [2023-12-19 11:07:45,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 11:07:45,239 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 142 transitions. [2023-12-19 11:07:45,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 11:07:45,239 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 142 transitions. [2023-12-19 11:07:45,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-19 11:07:45,240 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 11:07:45,240 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:07:45,248 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 11:07:45,447 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 11:07:45,447 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 11:07:45,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 11:07:45,448 INFO L85 PathProgramCache]: Analyzing trace with hash -310002243, now seen corresponding path program 1 times [2023-12-19 11:07:45,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 11:07:45,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451363567] [2023-12-19 11:07:45,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:07:45,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 11:07:45,469 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 11:07:45,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [346686907] [2023-12-19 11:07:45,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:07:45,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 11:07:45,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 11:07:45,471 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 11:07:45,493 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 11:07:45,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 11:07:45,537 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 11:07:45,543 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 11:07:45,781 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 11:07:45,781 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 11:07:45,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 11:07:45,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451363567] [2023-12-19 11:07:45,782 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 11:07:45,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346686907] [2023-12-19 11:07:45,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346686907] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 11:07:45,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 11:07:45,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 11:07:45,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670327950] [2023-12-19 11:07:45,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 11:07:45,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 11:07:45,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 11:07:45,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 11:07:45,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 11:07:45,784 INFO L87 Difference]: Start difference. First operand 95 states and 142 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 11:07:45,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 11:07:45,963 INFO L93 Difference]: Finished difference Result 217 states and 322 transitions. [2023-12-19 11:07:45,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 11:07:45,964 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 83 [2023-12-19 11:07:45,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 11:07:45,971 INFO L225 Difference]: With dead ends: 217 [2023-12-19 11:07:45,971 INFO L226 Difference]: Without dead ends: 123 [2023-12-19 11:07:45,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-12-19 11:07:45,976 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 134 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 11:07:45,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 318 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 11:07:45,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2023-12-19 11:07:45,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 105. [2023-12-19 11:07:45,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 80 states have (on average 1.425) internal successors, (114), 81 states have internal predecessors, (114), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-19 11:07:46,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 158 transitions. [2023-12-19 11:07:46,001 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 158 transitions. Word has length 83 [2023-12-19 11:07:46,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 11:07:46,002 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 158 transitions. [2023-12-19 11:07:46,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 11:07:46,002 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 158 transitions. [2023-12-19 11:07:46,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-19 11:07:46,009 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 11:07:46,009 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:07:46,018 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 11:07:46,216 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 11:07:46,217 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 11:07:46,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 11:07:46,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1119348869, now seen corresponding path program 1 times [2023-12-19 11:07:46,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 11:07:46,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411012277] [2023-12-19 11:07:46,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:07:46,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 11:07:46,242 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 11:07:46,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1150003792] [2023-12-19 11:07:46,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:07:46,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 11:07:46,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 11:07:46,245 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 11:07:46,254 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 11:07:46,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 11:07:46,308 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 11:07:46,315 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 11:07:46,638 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 11:07:46,639 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 11:07:46,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 11:07:46,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411012277] [2023-12-19 11:07:46,640 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 11:07:46,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150003792] [2023-12-19 11:07:46,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1150003792] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 11:07:46,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 11:07:46,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 11:07:46,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868255813] [2023-12-19 11:07:46,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 11:07:46,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 11:07:46,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 11:07:46,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 11:07:46,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 11:07:46,645 INFO L87 Difference]: Start difference. First operand 105 states and 158 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 11:07:46,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 11:07:46,831 INFO L93 Difference]: Finished difference Result 227 states and 337 transitions. [2023-12-19 11:07:46,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 11:07:46,832 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 83 [2023-12-19 11:07:46,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 11:07:46,835 INFO L225 Difference]: With dead ends: 227 [2023-12-19 11:07:46,835 INFO L226 Difference]: Without dead ends: 123 [2023-12-19 11:07:46,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-12-19 11:07:46,839 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 104 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 11:07:46,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 387 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 11:07:46,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2023-12-19 11:07:46,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 95. [2023-12-19 11:07:46,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 70 states have (on average 1.3857142857142857) internal successors, (97), 71 states have internal predecessors, (97), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-19 11:07:46,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 141 transitions. [2023-12-19 11:07:46,862 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 141 transitions. Word has length 83 [2023-12-19 11:07:46,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 11:07:46,863 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 141 transitions. [2023-12-19 11:07:46,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 11:07:46,863 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 141 transitions. [2023-12-19 11:07:46,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-19 11:07:46,864 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 11:07:46,864 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:07:46,876 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 11:07:47,071 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 11:07:47,072 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 11:07:47,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 11:07:47,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1271058629, now seen corresponding path program 1 times [2023-12-19 11:07:47,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 11:07:47,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774059617] [2023-12-19 11:07:47,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:07:47,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 11:07:47,092 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 11:07:47,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [235940823] [2023-12-19 11:07:47,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:07:47,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 11:07:47,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 11:07:47,094 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 11:07:47,119 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 11:07:47,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 11:07:47,181 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-19 11:07:47,184 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 11:07:47,392 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 96 proven. 30 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2023-12-19 11:07:47,393 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 11:07:47,540 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 11:07:47,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 11:07:47,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774059617] [2023-12-19 11:07:47,540 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 11:07:47,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235940823] [2023-12-19 11:07:47,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [235940823] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 11:07:47,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 11:07:47,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 14 [2023-12-19 11:07:47,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773522251] [2023-12-19 11:07:47,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 11:07:47,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 11:07:47,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 11:07:47,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 11:07:47,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2023-12-19 11:07:47,543 INFO L87 Difference]: Start difference. First operand 95 states and 141 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 11:07:47,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 11:07:47,742 INFO L93 Difference]: Finished difference Result 131 states and 191 transitions. [2023-12-19 11:07:47,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 11:07:47,742 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 85 [2023-12-19 11:07:47,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 11:07:47,744 INFO L225 Difference]: With dead ends: 131 [2023-12-19 11:07:47,744 INFO L226 Difference]: Without dead ends: 129 [2023-12-19 11:07:47,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 155 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2023-12-19 11:07:47,745 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 75 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 11:07:47,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 309 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 11:07:47,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-12-19 11:07:47,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 101. [2023-12-19 11:07:47,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 76 states have (on average 1.355263157894737) internal successors, (103), 77 states have internal predecessors, (103), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-19 11:07:47,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 147 transitions. [2023-12-19 11:07:47,760 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 147 transitions. Word has length 85 [2023-12-19 11:07:47,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 11:07:47,760 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 147 transitions. [2023-12-19 11:07:47,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 11:07:47,761 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 147 transitions. [2023-12-19 11:07:47,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-19 11:07:47,761 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 11:07:47,762 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:07:47,767 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 11:07:47,967 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 11:07:47,968 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 11:07:47,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 11:07:47,968 INFO L85 PathProgramCache]: Analyzing trace with hash -2035974330, now seen corresponding path program 1 times [2023-12-19 11:07:47,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 11:07:47,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021388435] [2023-12-19 11:07:47,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:07:47,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 11:07:47,985 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 11:07:47,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [398676649] [2023-12-19 11:07:47,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:07:47,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 11:07:47,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 11:07:47,987 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 11:07:47,994 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 11:07:48,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 11:07:48,049 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 11:07:48,051 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 11:07:48,109 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 11:07:48,109 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 11:07:48,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 11:07:48,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021388435] [2023-12-19 11:07:48,109 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 11:07:48,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398676649] [2023-12-19 11:07:48,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398676649] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 11:07:48,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 11:07:48,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 11:07:48,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662273065] [2023-12-19 11:07:48,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 11:07:48,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 11:07:48,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 11:07:48,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 11:07:48,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 11:07:48,111 INFO L87 Difference]: Start difference. First operand 101 states and 147 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 11:07:48,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 11:07:48,155 INFO L93 Difference]: Finished difference Result 211 states and 305 transitions. [2023-12-19 11:07:48,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 11:07:48,156 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 87 [2023-12-19 11:07:48,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 11:07:48,157 INFO L225 Difference]: With dead ends: 211 [2023-12-19 11:07:48,157 INFO L226 Difference]: Without dead ends: 111 [2023-12-19 11:07:48,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 11:07:48,158 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 5 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 11:07:48,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 132 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 11:07:48,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2023-12-19 11:07:48,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 107. [2023-12-19 11:07:48,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 82 states have (on average 1.329268292682927) internal successors, (109), 83 states have internal predecessors, (109), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-19 11:07:48,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 153 transitions. [2023-12-19 11:07:48,171 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 153 transitions. Word has length 87 [2023-12-19 11:07:48,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 11:07:48,171 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 153 transitions. [2023-12-19 11:07:48,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 11:07:48,171 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 153 transitions. [2023-12-19 11:07:48,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-19 11:07:48,172 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 11:07:48,172 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:07:48,181 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 11:07:48,378 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 11:07:48,378 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 11:07:48,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 11:07:48,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1574031741, now seen corresponding path program 1 times [2023-12-19 11:07:48,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 11:07:48,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138545299] [2023-12-19 11:07:48,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:07:48,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 11:07:48,396 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 11:07:48,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [481406842] [2023-12-19 11:07:48,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:07:48,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 11:07:48,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 11:07:48,410 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 11:07:48,415 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 11:07:48,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 11:07:48,490 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-19 11:07:48,493 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 11:07:48,704 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 63 proven. 63 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2023-12-19 11:07:48,704 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 11:07:48,890 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 11:07:48,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 11:07:48,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138545299] [2023-12-19 11:07:48,891 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 11:07:48,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481406842] [2023-12-19 11:07:48,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481406842] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 11:07:48,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 11:07:48,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2023-12-19 11:07:48,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664472116] [2023-12-19 11:07:48,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 11:07:48,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 11:07:48,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 11:07:48,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 11:07:48,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2023-12-19 11:07:48,893 INFO L87 Difference]: Start difference. First operand 107 states and 153 transitions. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 11:07:49,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 11:07:49,166 INFO L93 Difference]: Finished difference Result 143 states and 203 transitions. [2023-12-19 11:07:49,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 11:07:49,166 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 88 [2023-12-19 11:07:49,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 11:07:49,168 INFO L225 Difference]: With dead ends: 143 [2023-12-19 11:07:49,168 INFO L226 Difference]: Without dead ends: 141 [2023-12-19 11:07:49,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2023-12-19 11:07:49,169 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 88 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 11:07:49,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 275 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 11:07:49,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2023-12-19 11:07:49,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 109. [2023-12-19 11:07:49,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 84 states have (on average 1.3214285714285714) internal successors, (111), 85 states have internal predecessors, (111), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-19 11:07:49,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 155 transitions. [2023-12-19 11:07:49,194 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 155 transitions. Word has length 88 [2023-12-19 11:07:49,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 11:07:49,195 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 155 transitions. [2023-12-19 11:07:49,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 11:07:49,195 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 155 transitions. [2023-12-19 11:07:49,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-19 11:07:49,196 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 11:07:49,196 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:07:49,205 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 11:07:49,403 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 11:07:49,403 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 11:07:49,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 11:07:49,404 INFO L85 PathProgramCache]: Analyzing trace with hash -206543493, now seen corresponding path program 1 times [2023-12-19 11:07:49,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 11:07:49,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232649187] [2023-12-19 11:07:49,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:07:49,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 11:07:49,429 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 11:07:49,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1276400006] [2023-12-19 11:07:49,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:07:49,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 11:07:49,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 11:07:49,433 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 11:07:49,438 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 11:07:49,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 11:07:49,495 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 11:07:49,497 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 11:07:49,518 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 11:07:49,518 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 11:07:49,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 11:07:49,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232649187] [2023-12-19 11:07:49,518 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 11:07:49,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276400006] [2023-12-19 11:07:49,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276400006] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 11:07:49,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 11:07:49,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 11:07:49,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807307216] [2023-12-19 11:07:49,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 11:07:49,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 11:07:49,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 11:07:49,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 11:07:49,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 11:07:49,520 INFO L87 Difference]: Start difference. First operand 109 states and 155 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 11:07:49,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 11:07:49,562 INFO L93 Difference]: Finished difference Result 263 states and 371 transitions. [2023-12-19 11:07:49,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 11:07:49,563 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 90 [2023-12-19 11:07:49,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 11:07:49,565 INFO L225 Difference]: With dead ends: 263 [2023-12-19 11:07:49,565 INFO L226 Difference]: Without dead ends: 155 [2023-12-19 11:07:49,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 11:07:49,566 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 27 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 11:07:49,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 141 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 11:07:49,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2023-12-19 11:07:49,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 153. [2023-12-19 11:07:49,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 112 states have (on average 1.2589285714285714) internal successors, (141), 115 states have internal predecessors, (141), 36 states have call successors, (36), 4 states have call predecessors, (36), 4 states have return successors, (36), 33 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-19 11:07:49,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 213 transitions. [2023-12-19 11:07:49,587 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 213 transitions. Word has length 90 [2023-12-19 11:07:49,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 11:07:49,587 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 213 transitions. [2023-12-19 11:07:49,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 11:07:49,588 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 213 transitions. [2023-12-19 11:07:49,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-19 11:07:49,588 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 11:07:49,589 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:07:49,598 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-19 11:07:49,794 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 11:07:49,795 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 11:07:49,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 11:07:49,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1697757177, now seen corresponding path program 1 times [2023-12-19 11:07:49,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 11:07:49,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667614984] [2023-12-19 11:07:49,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:07:49,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 11:07:49,808 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 11:07:49,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [345302422] [2023-12-19 11:07:49,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 11:07:49,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 11:07:49,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 11:07:49,810 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 11:07:49,821 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 11:07:49,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 11:07:49,870 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 11:07:49,872 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 11:07:49,919 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 156 proven. 12 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-19 11:07:49,919 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 11:07:49,999 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 24 proven. 12 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-12-19 11:07:50,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 11:07:50,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667614984] [2023-12-19 11:07:50,000 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 11:07:50,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345302422] [2023-12-19 11:07:50,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [345302422] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 11:07:50,000 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 11:07:50,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 11:07:50,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920068066] [2023-12-19 11:07:50,000 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 11:07:50,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 11:07:50,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 11:07:50,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 11:07:50,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 11:07:50,002 INFO L87 Difference]: Start difference. First operand 153 states and 213 transitions. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 2 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-19 11:07:50,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 11:07:50,117 INFO L93 Difference]: Finished difference Result 285 states and 384 transitions. [2023-12-19 11:07:50,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 11:07:50,118 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 2 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 91 [2023-12-19 11:07:50,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 11:07:50,118 INFO L225 Difference]: With dead ends: 285 [2023-12-19 11:07:50,118 INFO L226 Difference]: Without dead ends: 0 [2023-12-19 11:07:50,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 174 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-19 11:07:50,120 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 49 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 11:07:50,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 75 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 11:07:50,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-19 11:07:50,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-19 11:07:50,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 11:07:50,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-19 11:07:50,121 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 91 [2023-12-19 11:07:50,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 11:07:50,121 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-19 11:07:50,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 2 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-19 11:07:50,122 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-19 11:07:50,122 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-19 11:07:50,124 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-19 11:07:50,131 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 11:07:50,331 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 11:07:50,333 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-19 11:07:50,856 INFO L899 garLoopResultBuilder]: For program point L52(lines 52 62) no Hoare annotation was computed. [2023-12-19 11:07:50,857 INFO L899 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2023-12-19 11:07:50,857 INFO L899 garLoopResultBuilder]: For program point L19-1(line 19) no Hoare annotation was computed. [2023-12-19 11:07:50,857 INFO L899 garLoopResultBuilder]: For program point L19-3(line 19) no Hoare annotation was computed. [2023-12-19 11:07:50,857 INFO L902 garLoopResultBuilder]: At program point L77(line 77) the Hoare annotation is: true [2023-12-19 11:07:50,857 INFO L902 garLoopResultBuilder]: At program point L77-1(line 77) the Hoare annotation is: true [2023-12-19 11:07:50,857 INFO L899 garLoopResultBuilder]: For program point L44(lines 44 48) no Hoare annotation was computed. [2023-12-19 11:07:50,857 INFO L899 garLoopResultBuilder]: For program point L44-2(lines 44 48) no Hoare annotation was computed. [2023-12-19 11:07:50,857 INFO L899 garLoopResultBuilder]: For program point L69(line 69) no Hoare annotation was computed. [2023-12-19 11:07:50,857 INFO L899 garLoopResultBuilder]: For program point L53(lines 53 61) no Hoare annotation was computed. [2023-12-19 11:07:50,857 INFO L899 garLoopResultBuilder]: For program point L78(line 78) no Hoare annotation was computed. [2023-12-19 11:07:50,858 INFO L899 garLoopResultBuilder]: For program point L54(line 54) no Hoare annotation was computed. [2023-12-19 11:07:50,858 INFO L899 garLoopResultBuilder]: For program point L54-2(line 54) no Hoare annotation was computed. [2023-12-19 11:07:50,858 INFO L899 garLoopResultBuilder]: For program point L54-4(line 54) no Hoare annotation was computed. [2023-12-19 11:07:50,858 INFO L899 garLoopResultBuilder]: For program point L54-6(lines 54 58) no Hoare annotation was computed. [2023-12-19 11:07:50,858 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-19 11:07:50,858 INFO L895 garLoopResultBuilder]: At program point L71(line 71) the Hoare annotation is: (< (mod ~var_1_7~0 256) 1) [2023-12-19 11:07:50,858 INFO L895 garLoopResultBuilder]: At program point L71-1(line 71) the Hoare annotation is: (< (mod ~var_1_7~0 256) 1) [2023-12-19 11:07:50,858 INFO L899 garLoopResultBuilder]: For program point L38(lines 38 64) no Hoare annotation was computed. [2023-12-19 11:07:50,858 INFO L895 garLoopResultBuilder]: At program point L80(line 80) the Hoare annotation is: (<= (mod ~var_1_7~0 256) 0) [2023-12-19 11:07:50,859 INFO L895 garLoopResultBuilder]: At program point L80-1(line 80) the Hoare annotation is: (<= (mod ~var_1_7~0 256) 0) [2023-12-19 11:07:50,859 INFO L899 garLoopResultBuilder]: For program point L72(line 72) no Hoare annotation was computed. [2023-12-19 11:07:50,859 INFO L895 garLoopResultBuilder]: At program point L97-2(lines 97 103) the Hoare annotation is: (let ((.cse0 (<= (mod ~var_1_7~0 256) 0))) (or (and (<= (mod ~last_1_var_1_14~0 65536) (mod ~last_1_var_1_15~0 65536)) .cse0) (and (= (mod ~var_1_14~0 65536) (mod ~var_1_8~0 65536)) (= ~var_1_13~0 ~var_1_10~0) (let ((.cse11 (<= (+ ~var_1_10~0 4) ~var_1_9~0)) (.cse8 (+ 256 ~var_1_8~0)) (.cse10 (mod ~var_1_10~0 256))) (let ((.cse4 (<= 128 .cse10)) (.cse2 (and .cse11 (= .cse8 .cse10))) (.cse6 (and .cse11 (= ~var_1_8~0 .cse10))) (.cse5 (<= .cse10 127)) (.cse7 (<= ~var_1_9~0 (+ 3 ~var_1_10~0))) (.cse1 (mod (+ 252 ~var_1_9~0) 256))) (or (and (<= 128 .cse1) (let ((.cse3 (and .cse7 (= .cse8 .cse1)))) (or (and (or .cse2 .cse3) .cse4) (and .cse5 (or .cse3 .cse6))))) (and (let ((.cse9 (and (= ~var_1_8~0 .cse1) .cse7))) (or (and .cse4 (or .cse9 .cse2)) (and (or .cse9 .cse6) .cse5))) (<= .cse1 127))))) .cse0 (= (mod ~var_1_15~0 65536) (mod ~var_1_3~0 256))))) [2023-12-19 11:07:50,859 INFO L899 garLoopResultBuilder]: For program point L97-3(lines 97 103) no Hoare annotation was computed. [2023-12-19 11:07:50,859 INFO L899 garLoopResultBuilder]: For program point L81(line 81) no Hoare annotation was computed. [2023-12-19 11:07:50,859 INFO L899 garLoopResultBuilder]: For program point L40(lines 40 42) no Hoare annotation was computed. [2023-12-19 11:07:50,860 INFO L899 garLoopResultBuilder]: For program point L40-2(lines 40 42) no Hoare annotation was computed. [2023-12-19 11:07:50,860 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2023-12-19 11:07:50,860 INFO L895 garLoopResultBuilder]: At program point L74(line 74) the Hoare annotation is: (< (mod ~var_1_7~0 256) 1) [2023-12-19 11:07:50,860 INFO L895 garLoopResultBuilder]: At program point L74-1(line 74) the Hoare annotation is: (< (mod ~var_1_7~0 256) 1) [2023-12-19 11:07:50,860 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-19 11:07:50,860 INFO L899 garLoopResultBuilder]: For program point L91(line 91) no Hoare annotation was computed. [2023-12-19 11:07:50,860 INFO L899 garLoopResultBuilder]: For program point L91-1(line 91) no Hoare annotation was computed. [2023-12-19 11:07:50,860 INFO L899 garLoopResultBuilder]: For program point L91-2(line 91) no Hoare annotation was computed. [2023-12-19 11:07:50,860 INFO L899 garLoopResultBuilder]: For program point L91-3(line 91) no Hoare annotation was computed. [2023-12-19 11:07:50,860 INFO L899 garLoopResultBuilder]: For program point L91-4(line 91) no Hoare annotation was computed. [2023-12-19 11:07:50,861 INFO L899 garLoopResultBuilder]: For program point L91-6(line 91) no Hoare annotation was computed. [2023-12-19 11:07:50,861 INFO L895 garLoopResultBuilder]: At program point L83(line 83) the Hoare annotation is: (<= (mod ~var_1_7~0 256) 0) [2023-12-19 11:07:50,861 INFO L899 garLoopResultBuilder]: For program point L91-8(line 91) no Hoare annotation was computed. [2023-12-19 11:07:50,861 INFO L895 garLoopResultBuilder]: At program point L83-1(line 83) the Hoare annotation is: (<= (mod ~var_1_7~0 256) 0) [2023-12-19 11:07:50,861 INFO L899 garLoopResultBuilder]: For program point L91-10(line 91) no Hoare annotation was computed. [2023-12-19 11:07:50,861 INFO L899 garLoopResultBuilder]: For program point L91-12(line 91) no Hoare annotation was computed. [2023-12-19 11:07:50,861 INFO L899 garLoopResultBuilder]: For program point L91-14(line 91) no Hoare annotation was computed. [2023-12-19 11:07:50,861 INFO L899 garLoopResultBuilder]: For program point L75(line 75) no Hoare annotation was computed. [2023-12-19 11:07:50,861 INFO L899 garLoopResultBuilder]: For program point L91-16(line 91) no Hoare annotation was computed. [2023-12-19 11:07:50,861 INFO L899 garLoopResultBuilder]: For program point L91-18(line 91) no Hoare annotation was computed. [2023-12-19 11:07:50,861 INFO L895 garLoopResultBuilder]: At program point L67(line 67) the Hoare annotation is: (< (mod ~var_1_7~0 256) 1) [2023-12-19 11:07:50,862 INFO L895 garLoopResultBuilder]: At program point L67-1(line 67) the Hoare annotation is: (< (mod ~var_1_7~0 256) 1) [2023-12-19 11:07:50,862 INFO L899 garLoopResultBuilder]: For program point L84(lines 65 85) no Hoare annotation was computed. [2023-12-19 11:07:50,862 INFO L899 garLoopResultBuilder]: For program point L51(lines 51 63) no Hoare annotation was computed. [2023-12-19 11:07:50,862 INFO L895 garLoopResultBuilder]: At program point L68(line 68) the Hoare annotation is: (< (mod ~var_1_7~0 256) 1) [2023-12-19 11:07:50,862 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line 20) the Hoare annotation is: true [2023-12-19 11:07:50,862 INFO L899 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2023-12-19 11:07:50,862 INFO L899 garLoopResultBuilder]: For program point L20-2(line 20) no Hoare annotation was computed. [2023-12-19 11:07:50,862 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(line 20) no Hoare annotation was computed. [2023-12-19 11:07:50,865 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 11:07:50,867 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-19 11:07:50,879 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 11:07:50 BoogieIcfgContainer [2023-12-19 11:07:50,879 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-19 11:07:50,879 INFO L158 Benchmark]: Toolchain (without parser) took 13851.10ms. Allocated memory was 359.7MB in the beginning and 702.5MB in the end (delta: 342.9MB). Free memory was 321.7MB in the beginning and 317.5MB in the end (delta: 4.2MB). Peak memory consumption was 347.8MB. Max. memory is 8.0GB. [2023-12-19 11:07:50,880 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 198.2MB. Free memory is still 145.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 11:07:50,880 INFO L158 Benchmark]: CACSL2BoogieTranslator took 245.37ms. Allocated memory is still 359.7MB. Free memory was 321.3MB in the beginning and 308.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-19 11:07:50,880 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.28ms. Allocated memory is still 359.7MB. Free memory was 308.8MB in the beginning and 305.6MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-19 11:07:50,880 INFO L158 Benchmark]: Boogie Preprocessor took 52.07ms. Allocated memory is still 359.7MB. Free memory was 305.6MB in the beginning and 302.5MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-19 11:07:50,881 INFO L158 Benchmark]: RCFGBuilder took 514.97ms. Allocated memory is still 359.7MB. Free memory was 302.5MB in the beginning and 281.0MB in the end (delta: 21.5MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. [2023-12-19 11:07:50,881 INFO L158 Benchmark]: TraceAbstraction took 12954.28ms. Allocated memory was 359.7MB in the beginning and 702.5MB in the end (delta: 342.9MB). Free memory was 280.4MB in the beginning and 317.5MB in the end (delta: -37.1MB). Peak memory consumption was 306.9MB. Max. memory is 8.0GB. [2023-12-19 11:07:50,882 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 198.2MB. Free memory is still 145.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 245.37ms. Allocated memory is still 359.7MB. Free memory was 321.3MB in the beginning and 308.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 59.28ms. Allocated memory is still 359.7MB. Free memory was 308.8MB in the beginning and 305.6MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 52.07ms. Allocated memory is still 359.7MB. Free memory was 305.6MB in the beginning and 302.5MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 514.97ms. Allocated memory is still 359.7MB. Free memory was 302.5MB in the beginning and 281.0MB in the end (delta: 21.5MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. * TraceAbstraction took 12954.28ms. Allocated memory was 359.7MB in the beginning and 702.5MB in the end (delta: 342.9MB). Free memory was 280.4MB in the beginning and 317.5MB in the end (delta: -37.1MB). Peak memory consumption was 306.9MB. 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 - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 55 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 12.9s, OverallIterations: 9, TraceHistogramMax: 13, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 753 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 746 mSDsluCounter, 2117 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1364 mSDsCounter, 33 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 994 IncrementalHoareTripleChecker+Invalid, 1027 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 33 mSolverCounterUnsat, 753 mSDtfsCounter, 994 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1047 GetRequests, 975 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=153occurred in iteration=8, InterpolantAutomatonStates: 65, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 160 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 15 LocationsWithAnnotation, 209 PreInvPairs, 249 NumberOfFragments, 246 HoareAnnotationTreeSize, 209 FormulaSimplifications, 7725 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 15 FormulaSimplificationsInter, 4327 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 6.9s InterpolantComputationTime, 773 NumberOfCodeBlocks, 773 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 1025 ConstructedInterpolants, 0 QuantifiedInterpolants, 4670 SizeOfPredicates, 67 NumberOfNonLiveVariables, 1924 ConjunctsInSsa, 86 ConjunctsInUnsatCore, 12 InterpolantComputations, 8 PerfectInterpolantSequences, 3627/3744 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 97]: Loop Invariant Derived loop invariant: ((((last_1_var_1_14 % 65536) <= (last_1_var_1_15 % 65536)) && ((var_1_7 % 256) <= 0)) || ((((((var_1_14 % 65536) == (var_1_8 % 65536)) && (var_1_13 == var_1_10)) && (((128 <= ((252 + var_1_9) % 256)) && ((((((var_1_10 + 4) <= var_1_9) && ((256 + var_1_8) == (var_1_10 % 256))) || ((var_1_9 <= (3 + var_1_10)) && ((256 + var_1_8) == ((252 + var_1_9) % 256)))) && (128 <= (var_1_10 % 256))) || (((var_1_10 % 256) <= 127) && (((var_1_9 <= (3 + var_1_10)) && ((256 + var_1_8) == ((252 + var_1_9) % 256))) || (((var_1_10 + 4) <= var_1_9) && (var_1_8 == (var_1_10 % 256))))))) || ((((128 <= (var_1_10 % 256)) && (((var_1_8 == ((252 + var_1_9) % 256)) && (var_1_9 <= (3 + var_1_10))) || (((var_1_10 + 4) <= var_1_9) && ((256 + var_1_8) == (var_1_10 % 256))))) || ((((var_1_8 == ((252 + var_1_9) % 256)) && (var_1_9 <= (3 + var_1_10))) || (((var_1_10 + 4) <= var_1_9) && (var_1_8 == (var_1_10 % 256)))) && ((var_1_10 % 256) <= 127))) && (((252 + var_1_9) % 256) <= 127)))) && ((var_1_7 % 256) <= 0)) && ((var_1_15 % 65536) == (var_1_3 % 256)))) RESULT: Ultimate proved your program to be correct! [2023-12-19 11:07:50,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...