/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 false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_floatingpointinfluence_has-floats_file-89.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 22:03:08,414 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 22:03:08,480 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 22:03:08,484 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 22:03:08,484 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 22:03:08,506 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 22:03:08,506 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 22:03:08,506 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 22:03:08,507 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 22:03:08,510 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 22:03:08,510 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 22:03:08,510 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 22:03:08,511 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 22:03:08,512 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 22:03:08,512 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 22:03:08,512 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 22:03:08,512 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 22:03:08,512 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 22:03:08,513 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 22:03:08,513 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 22:03:08,513 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 22:03:08,513 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 22:03:08,513 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 22:03:08,513 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 22:03:08,514 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 22:03:08,514 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 22:03:08,514 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 22:03:08,514 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 22:03:08,514 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 22:03:08,515 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 22:03:08,515 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 22:03:08,515 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 22:03:08,516 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 22:03:08,516 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 22:03:08,516 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 22:03:08,516 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 22:03:08,516 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 22:03:08,516 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 22:03:08,516 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 22:03:08,517 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 22:03:08,517 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 22:03:08,517 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 22:03:08,517 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 22:03:08,517 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 22:03:08,691 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 22:03:08,706 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 22:03:08,710 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 22:03:08,710 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 22:03:08,711 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 22:03:08,711 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_floatingpointinfluence_has-floats_file-89.i [2023-12-20 22:03:09,812 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 22:03:09,971 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 22:03:09,971 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_floatingpointinfluence_has-floats_file-89.i [2023-12-20 22:03:09,978 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/091c3596b/f80b36b23b7d4a278eaf0da4416b127f/FLAG378e0656d [2023-12-20 22:03:09,988 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/091c3596b/f80b36b23b7d4a278eaf0da4416b127f [2023-12-20 22:03:09,993 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 22:03:09,994 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 22:03:09,995 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 22:03:09,995 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 22:03:10,001 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 22:03:10,001 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 10:03:09" (1/1) ... [2023-12-20 22:03:10,002 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e037492 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:03:10, skipping insertion in model container [2023-12-20 22:03:10,002 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 10:03:09" (1/1) ... [2023-12-20 22:03:10,020 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 22:03:10,122 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_has-floats_file-89.i[917,930] [2023-12-20 22:03:10,145 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 22:03:10,167 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 22:03:10,182 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_has-floats_file-89.i[917,930] [2023-12-20 22:03:10,200 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 22:03:10,222 INFO L206 MainTranslator]: Completed translation [2023-12-20 22:03:10,222 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:03:10 WrapperNode [2023-12-20 22:03:10,222 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 22:03:10,223 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 22:03:10,223 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 22:03:10,223 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 22:03:10,228 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:03:10" (1/1) ... [2023-12-20 22:03:10,234 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:03:10" (1/1) ... [2023-12-20 22:03:10,270 INFO L138 Inliner]: procedures = 26, calls = 26, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 125 [2023-12-20 22:03:10,270 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 22:03:10,271 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 22:03:10,271 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 22:03:10,271 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 22:03:10,281 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:03:10" (1/1) ... [2023-12-20 22:03:10,282 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:03:10" (1/1) ... [2023-12-20 22:03:10,283 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:03:10" (1/1) ... [2023-12-20 22:03:10,294 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]. [2023-12-20 22:03:10,294 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:03:10" (1/1) ... [2023-12-20 22:03:10,294 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:03:10" (1/1) ... [2023-12-20 22:03:10,298 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:03:10" (1/1) ... [2023-12-20 22:03:10,301 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:03:10" (1/1) ... [2023-12-20 22:03:10,302 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:03:10" (1/1) ... [2023-12-20 22:03:10,303 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:03:10" (1/1) ... [2023-12-20 22:03:10,308 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 22:03:10,320 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 22:03:10,320 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 22:03:10,320 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 22:03:10,321 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:03:10" (1/1) ... [2023-12-20 22:03:10,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 22:03:10,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 22:03:10,373 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) [2023-12-20 22:03:10,420 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 [2023-12-20 22:03:10,429 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 22:03:10,429 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-20 22:03:10,429 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-20 22:03:10,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 22:03:10,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 22:03:10,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 22:03:10,487 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 22:03:10,489 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 22:03:10,693 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 22:03:10,734 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 22:03:10,734 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-20 22:03:10,734 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 10:03:10 BoogieIcfgContainer [2023-12-20 22:03:10,735 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 22:03:10,736 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 22:03:10,736 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 22:03:10,738 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 22:03:10,739 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 10:03:09" (1/3) ... [2023-12-20 22:03:10,739 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b55e905 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 10:03:10, skipping insertion in model container [2023-12-20 22:03:10,739 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:03:10" (2/3) ... [2023-12-20 22:03:10,739 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b55e905 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 10:03:10, skipping insertion in model container [2023-12-20 22:03:10,739 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 10:03:10" (3/3) ... [2023-12-20 22:03:10,740 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_floatingpointinfluence_has-floats_file-89.i [2023-12-20 22:03:10,752 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 22:03:10,752 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 22:03:10,782 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 22:03:10,786 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;@34fa2bd6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 22:03:10,786 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 22:03:10,789 INFO L276 IsEmpty]: Start isEmpty. Operand has 48 states, 32 states have (on average 1.46875) internal successors, (47), 33 states have internal predecessors, (47), 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) [2023-12-20 22:03:10,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-20 22:03:10,796 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 22:03:10,796 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] [2023-12-20 22:03:10,796 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 22:03:10,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 22:03:10,803 INFO L85 PathProgramCache]: Analyzing trace with hash -266897666, now seen corresponding path program 1 times [2023-12-20 22:03:10,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 22:03:10,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768052791] [2023-12-20 22:03:10,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:03:10,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 22:03:10,925 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 22:03:10,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1344330684] [2023-12-20 22:03:10,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:03:10,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 22:03:10,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 22:03:10,929 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) [2023-12-20 22:03:10,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 22:03:11,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:03:11,034 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-20 22:03:11,041 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 22:03:13,325 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-20 22:03:13,326 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 22:03:13,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 22:03:13,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768052791] [2023-12-20 22:03:13,326 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 22:03:13,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344330684] [2023-12-20 22:03:13,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344330684] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 22:03:13,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 22:03:13,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 22:03:13,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176856655] [2023-12-20 22:03:13,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 22:03:13,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 22:03:13,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 22:03:13,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 22:03:13,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 22:03:13,363 INFO L87 Difference]: Start difference. First operand has 48 states, 32 states have (on average 1.46875) internal successors, (47), 33 states have internal predecessors, (47), 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) [2023-12-20 22:03:13,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 22:03:13,799 INFO L93 Difference]: Finished difference Result 150 states and 255 transitions. [2023-12-20 22:03:13,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 22:03:13,801 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 [2023-12-20 22:03:13,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 22:03:13,807 INFO L225 Difference]: With dead ends: 150 [2023-12-20 22:03:13,807 INFO L226 Difference]: Without dead ends: 103 [2023-12-20 22:03:13,809 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 [2023-12-20 22:03:13,811 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 100 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 22:03:13,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 231 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 22:03:13,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-12-20 22:03:13,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 88. [2023-12-20 22:03:13,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 63 states have (on average 1.3968253968253967) internal successors, (88), 64 states have internal predecessors, (88), 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) [2023-12-20 22:03:13,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 132 transitions. [2023-12-20 22:03:13,844 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 132 transitions. Word has length 83 [2023-12-20 22:03:13,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 22:03:13,844 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 132 transitions. [2023-12-20 22:03:13,845 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) [2023-12-20 22:03:13,845 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 132 transitions. [2023-12-20 22:03:13,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-20 22:03:13,847 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 22:03:13,847 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] [2023-12-20 22:03:13,855 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-20 22:03:14,053 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 [2023-12-20 22:03:14,053 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 22:03:14,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 22:03:14,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1076244292, now seen corresponding path program 1 times [2023-12-20 22:03:14,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 22:03:14,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157195470] [2023-12-20 22:03:14,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:03:14,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 22:03:14,093 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 22:03:14,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1055234415] [2023-12-20 22:03:14,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:03:14,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 22:03:14,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 22:03:14,096 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) [2023-12-20 22:03:14,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 22:03:14,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:03:14,169 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-20 22:03:14,175 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 22:03:15,680 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-20 22:03:15,680 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 22:03:15,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 22:03:15,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157195470] [2023-12-20 22:03:15,680 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 22:03:15,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055234415] [2023-12-20 22:03:15,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055234415] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 22:03:15,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 22:03:15,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 22:03:15,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339553672] [2023-12-20 22:03:15,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 22:03:15,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 22:03:15,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 22:03:15,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 22:03:15,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 22:03:15,683 INFO L87 Difference]: Start difference. First operand 88 states and 132 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) [2023-12-20 22:03:15,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 22:03:15,995 INFO L93 Difference]: Finished difference Result 190 states and 280 transitions. [2023-12-20 22:03:15,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 22:03:15,996 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 [2023-12-20 22:03:15,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 22:03:15,997 INFO L225 Difference]: With dead ends: 190 [2023-12-20 22:03:15,997 INFO L226 Difference]: Without dead ends: 103 [2023-12-20 22:03:15,998 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 [2023-12-20 22:03:15,999 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 90 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 22:03:15,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 258 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 22:03:16,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-12-20 22:03:16,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 81. [2023-12-20 22:03:16,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 56 states have (on average 1.3571428571428572) internal successors, (76), 57 states have internal predecessors, (76), 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) [2023-12-20 22:03:16,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 120 transitions. [2023-12-20 22:03:16,011 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 120 transitions. Word has length 83 [2023-12-20 22:03:16,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 22:03:16,011 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 120 transitions. [2023-12-20 22:03:16,011 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) [2023-12-20 22:03:16,011 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 120 transitions. [2023-12-20 22:03:16,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-20 22:03:16,012 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 22:03:16,012 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] [2023-12-20 22:03:16,029 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-20 22:03:16,220 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 [2023-12-20 22:03:16,221 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 22:03:16,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 22:03:16,222 INFO L85 PathProgramCache]: Analyzing trace with hash -659924676, now seen corresponding path program 1 times [2023-12-20 22:03:16,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 22:03:16,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328068913] [2023-12-20 22:03:16,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:03:16,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 22:03:16,237 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 22:03:16,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [296584425] [2023-12-20 22:03:16,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:03:16,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 22:03:16,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 22:03:16,239 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) [2023-12-20 22:03:16,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 22:03:16,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:03:16,293 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-20 22:03:16,295 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 22:03:16,550 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-20 22:03:16,550 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 22:03:16,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 22:03:16,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328068913] [2023-12-20 22:03:16,551 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 22:03:16,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296584425] [2023-12-20 22:03:16,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [296584425] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 22:03:16,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 22:03:16,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 22:03:16,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607358882] [2023-12-20 22:03:16,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 22:03:16,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 22:03:16,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 22:03:16,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 22:03:16,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 22:03:16,554 INFO L87 Difference]: Start difference. First operand 81 states and 120 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) [2023-12-20 22:03:16,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 22:03:16,768 INFO L93 Difference]: Finished difference Result 182 states and 267 transitions. [2023-12-20 22:03:16,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 22:03:16,768 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 [2023-12-20 22:03:16,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 22:03:16,771 INFO L225 Difference]: With dead ends: 182 [2023-12-20 22:03:16,771 INFO L226 Difference]: Without dead ends: 102 [2023-12-20 22:03:16,772 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 [2023-12-20 22:03:16,773 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 90 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 22:03:16,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 255 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 22:03:16,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2023-12-20 22:03:16,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 88. [2023-12-20 22:03:16,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 63 states have (on average 1.380952380952381) internal successors, (87), 64 states have internal predecessors, (87), 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) [2023-12-20 22:03:16,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 131 transitions. [2023-12-20 22:03:16,783 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 131 transitions. Word has length 83 [2023-12-20 22:03:16,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 22:03:16,785 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 131 transitions. [2023-12-20 22:03:16,785 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) [2023-12-20 22:03:16,785 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 131 transitions. [2023-12-20 22:03:16,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-20 22:03:16,786 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 22:03:16,786 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] [2023-12-20 22:03:16,793 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-20 22:03:16,991 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 [2023-12-20 22:03:16,992 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 22:03:16,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 22:03:16,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1469271302, now seen corresponding path program 1 times [2023-12-20 22:03:16,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 22:03:16,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532556168] [2023-12-20 22:03:16,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:03:16,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 22:03:17,021 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 22:03:17,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1315338109] [2023-12-20 22:03:17,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:03:17,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 22:03:17,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 22:03:17,037 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) [2023-12-20 22:03:17,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 22:03:17,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:03:17,088 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-20 22:03:17,090 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 22:03:17,329 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-20 22:03:17,329 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 22:03:17,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 22:03:17,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532556168] [2023-12-20 22:03:17,329 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 22:03:17,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315338109] [2023-12-20 22:03:17,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315338109] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 22:03:17,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 22:03:17,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 22:03:17,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568742994] [2023-12-20 22:03:17,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 22:03:17,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 22:03:17,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 22:03:17,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 22:03:17,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 22:03:17,331 INFO L87 Difference]: Start difference. First operand 88 states and 131 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) [2023-12-20 22:03:17,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 22:03:17,562 INFO L93 Difference]: Finished difference Result 189 states and 277 transitions. [2023-12-20 22:03:17,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 22:03:17,563 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 [2023-12-20 22:03:17,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 22:03:17,564 INFO L225 Difference]: With dead ends: 189 [2023-12-20 22:03:17,565 INFO L226 Difference]: Without dead ends: 102 [2023-12-20 22:03:17,565 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 [2023-12-20 22:03:17,568 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 71 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 22:03:17,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 338 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 22:03:17,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2023-12-20 22:03:17,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 81. [2023-12-20 22:03:17,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 56 states have (on average 1.3392857142857142) internal successors, (75), 57 states have internal predecessors, (75), 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) [2023-12-20 22:03:17,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 119 transitions. [2023-12-20 22:03:17,592 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 119 transitions. Word has length 83 [2023-12-20 22:03:17,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 22:03:17,592 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 119 transitions. [2023-12-20 22:03:17,592 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) [2023-12-20 22:03:17,592 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 119 transitions. [2023-12-20 22:03:17,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-20 22:03:17,598 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 22:03:17,598 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] [2023-12-20 22:03:17,617 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-20 22:03:17,803 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 [2023-12-20 22:03:17,803 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 22:03:17,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 22:03:17,804 INFO L85 PathProgramCache]: Analyzing trace with hash 489744115, now seen corresponding path program 1 times [2023-12-20 22:03:17,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 22:03:17,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16733838] [2023-12-20 22:03:17,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:03:17,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 22:03:17,830 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 22:03:17,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [221671671] [2023-12-20 22:03:17,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:03:17,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 22:03:17,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 22:03:17,836 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) [2023-12-20 22:03:17,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-20 22:03:18,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:03:18,038 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-20 22:03:18,040 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 22:03:18,204 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 96 proven. 30 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2023-12-20 22:03:18,204 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 22:03:18,334 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-20 22:03:18,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 22:03:18,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16733838] [2023-12-20 22:03:18,334 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 22:03:18,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221671671] [2023-12-20 22:03:18,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221671671] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-20 22:03:18,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 22:03:18,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2023-12-20 22:03:18,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328627307] [2023-12-20 22:03:18,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 22:03:18,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 22:03:18,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 22:03:18,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 22:03:18,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2023-12-20 22:03:18,336 INFO L87 Difference]: Start difference. First operand 81 states and 119 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) [2023-12-20 22:03:18,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 22:03:18,496 INFO L93 Difference]: Finished difference Result 115 states and 167 transitions. [2023-12-20 22:03:18,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 22:03:18,496 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 [2023-12-20 22:03:18,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 22:03:18,497 INFO L225 Difference]: With dead ends: 115 [2023-12-20 22:03:18,497 INFO L226 Difference]: Without dead ends: 113 [2023-12-20 22:03:18,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2023-12-20 22:03:18,498 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 85 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 22:03:18,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 247 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 22:03:18,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2023-12-20 22:03:18,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 87. [2023-12-20 22:03:18,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 62 states have (on average 1.3064516129032258) internal successors, (81), 63 states have internal predecessors, (81), 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) [2023-12-20 22:03:18,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 125 transitions. [2023-12-20 22:03:18,508 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 125 transitions. Word has length 85 [2023-12-20 22:03:18,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 22:03:18,508 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 125 transitions. [2023-12-20 22:03:18,508 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) [2023-12-20 22:03:18,508 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 125 transitions. [2023-12-20 22:03:18,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-20 22:03:18,509 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 22:03:18,509 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] [2023-12-20 22:03:18,517 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-20 22:03:18,714 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 [2023-12-20 22:03:18,714 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 22:03:18,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 22:03:18,715 INFO L85 PathProgramCache]: Analyzing trace with hash 942714149, now seen corresponding path program 1 times [2023-12-20 22:03:18,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 22:03:18,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629454206] [2023-12-20 22:03:18,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:03:18,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 22:03:18,728 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 22:03:18,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1842208573] [2023-12-20 22:03:18,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:03:18,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 22:03:18,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 22:03:18,730 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) [2023-12-20 22:03:18,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-20 22:03:18,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:03:18,779 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 22:03:18,781 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 22:03:18,820 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-20 22:03:18,820 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 22:03:18,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 22:03:18,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629454206] [2023-12-20 22:03:18,820 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 22:03:18,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842208573] [2023-12-20 22:03:18,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842208573] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 22:03:18,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 22:03:18,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 22:03:18,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972585003] [2023-12-20 22:03:18,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 22:03:18,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 22:03:18,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 22:03:18,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 22:03:18,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 22:03:18,822 INFO L87 Difference]: Start difference. First operand 87 states and 125 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) [2023-12-20 22:03:18,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 22:03:18,857 INFO L93 Difference]: Finished difference Result 183 states and 261 transitions. [2023-12-20 22:03:18,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 22:03:18,857 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 [2023-12-20 22:03:18,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 22:03:18,858 INFO L225 Difference]: With dead ends: 183 [2023-12-20 22:03:18,858 INFO L226 Difference]: Without dead ends: 97 [2023-12-20 22:03:18,858 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 [2023-12-20 22:03:18,859 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 5 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 110 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 [2023-12-20 22:03:18,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 110 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 22:03:18,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-12-20 22:03:18,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 93. [2023-12-20 22:03:18,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 68 states have (on average 1.2794117647058822) internal successors, (87), 69 states have internal predecessors, (87), 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) [2023-12-20 22:03:18,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 131 transitions. [2023-12-20 22:03:18,868 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 131 transitions. Word has length 87 [2023-12-20 22:03:18,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 22:03:18,869 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 131 transitions. [2023-12-20 22:03:18,869 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) [2023-12-20 22:03:18,869 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 131 transitions. [2023-12-20 22:03:18,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-20 22:03:18,870 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 22:03:18,870 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] [2023-12-20 22:03:18,879 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-20 22:03:19,077 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 [2023-12-20 22:03:19,077 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 22:03:19,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 22:03:19,078 INFO L85 PathProgramCache]: Analyzing trace with hash -207759420, now seen corresponding path program 1 times [2023-12-20 22:03:19,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 22:03:19,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486661970] [2023-12-20 22:03:19,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:03:19,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 22:03:19,089 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 22:03:19,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1677154676] [2023-12-20 22:03:19,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:03:19,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 22:03:19,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 22:03:19,122 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) [2023-12-20 22:03:19,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-20 22:03:19,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:03:19,393 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 22:03:19,394 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 22:03:19,576 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 96 proven. 30 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2023-12-20 22:03:19,576 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 22:03:19,727 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-20 22:03:19,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 22:03:19,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486661970] [2023-12-20 22:03:19,728 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 22:03:19,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677154676] [2023-12-20 22:03:19,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1677154676] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-20 22:03:19,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 22:03:19,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 16 [2023-12-20 22:03:19,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929346500] [2023-12-20 22:03:19,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 22:03:19,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 22:03:19,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 22:03:19,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 22:03:19,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2023-12-20 22:03:19,729 INFO L87 Difference]: Start difference. First operand 93 states and 131 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) [2023-12-20 22:03:19,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 22:03:19,952 INFO L93 Difference]: Finished difference Result 131 states and 183 transitions. [2023-12-20 22:03:19,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 22:03:19,952 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 [2023-12-20 22:03:19,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 22:03:19,953 INFO L225 Difference]: With dead ends: 131 [2023-12-20 22:03:19,954 INFO L226 Difference]: Without dead ends: 129 [2023-12-20 22:03:19,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 159 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2023-12-20 22:03:19,954 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 66 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 22:03:19,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 348 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 22:03:19,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-12-20 22:03:19,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 95. [2023-12-20 22:03:19,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 70 states have (on average 1.2714285714285714) internal successors, (89), 71 states have internal predecessors, (89), 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) [2023-12-20 22:03:19,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 133 transitions. [2023-12-20 22:03:19,976 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 133 transitions. Word has length 88 [2023-12-20 22:03:19,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 22:03:19,976 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 133 transitions. [2023-12-20 22:03:19,977 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) [2023-12-20 22:03:19,977 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 133 transitions. [2023-12-20 22:03:19,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-20 22:03:19,977 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 22:03:19,977 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] [2023-12-20 22:03:19,988 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-20 22:03:20,183 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 [2023-12-20 22:03:20,184 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 22:03:20,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 22:03:20,185 INFO L85 PathProgramCache]: Analyzing trace with hash 604127913, now seen corresponding path program 1 times [2023-12-20 22:03:20,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 22:03:20,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303856551] [2023-12-20 22:03:20,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:03:20,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 22:03:20,197 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 22:03:20,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [279226532] [2023-12-20 22:03:20,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:03:20,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 22:03:20,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 22:03:20,198 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) [2023-12-20 22:03:20,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-20 22:03:20,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:03:20,271 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 22:03:20,273 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 22:03:20,288 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-20 22:03:20,288 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 22:03:20,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 22:03:20,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303856551] [2023-12-20 22:03:20,288 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 22:03:20,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279226532] [2023-12-20 22:03:20,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279226532] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 22:03:20,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 22:03:20,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 22:03:20,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901799764] [2023-12-20 22:03:20,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 22:03:20,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 22:03:20,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 22:03:20,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 22:03:20,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 22:03:20,290 INFO L87 Difference]: Start difference. First operand 95 states and 133 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) [2023-12-20 22:03:20,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 22:03:20,325 INFO L93 Difference]: Finished difference Result 235 states and 327 transitions. [2023-12-20 22:03:20,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 22:03:20,325 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 [2023-12-20 22:03:20,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 22:03:20,326 INFO L225 Difference]: With dead ends: 235 [2023-12-20 22:03:20,326 INFO L226 Difference]: Without dead ends: 141 [2023-12-20 22:03:20,326 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 [2023-12-20 22:03:20,327 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 27 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 119 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 [2023-12-20 22:03:20,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 119 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 22:03:20,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2023-12-20 22:03:20,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 139. [2023-12-20 22:03:20,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 98 states have (on average 1.2142857142857142) internal successors, (119), 101 states have internal predecessors, (119), 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) [2023-12-20 22:03:20,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 191 transitions. [2023-12-20 22:03:20,342 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 191 transitions. Word has length 90 [2023-12-20 22:03:20,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 22:03:20,342 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 191 transitions. [2023-12-20 22:03:20,343 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) [2023-12-20 22:03:20,343 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 191 transitions. [2023-12-20 22:03:20,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-20 22:03:20,343 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 22:03:20,343 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] [2023-12-20 22:03:20,350 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-20 22:03:20,548 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 [2023-12-20 22:03:20,549 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 22:03:20,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 22:03:20,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1462610285, now seen corresponding path program 1 times [2023-12-20 22:03:20,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 22:03:20,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881271336] [2023-12-20 22:03:20,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:03:20,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 22:03:20,564 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 22:03:20,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [722615976] [2023-12-20 22:03:20,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:03:20,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 22:03:20,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 22:03:20,565 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) [2023-12-20 22:03:20,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-20 22:03:20,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:03:20,617 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 22:03:20,618 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 22:03:20,628 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-20 22:03:20,628 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 22:03:20,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 22:03:20,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881271336] [2023-12-20 22:03:20,629 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 22:03:20,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722615976] [2023-12-20 22:03:20,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722615976] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 22:03:20,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 22:03:20,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 22:03:20,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473927371] [2023-12-20 22:03:20,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 22:03:20,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 22:03:20,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 22:03:20,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 22:03:20,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 22:03:20,630 INFO L87 Difference]: Start difference. First operand 139 states and 191 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2023-12-20 22:03:20,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 22:03:20,679 INFO L93 Difference]: Finished difference Result 400 states and 549 transitions. [2023-12-20 22:03:20,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 22:03:20,680 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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 91 [2023-12-20 22:03:20,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 22:03:20,681 INFO L225 Difference]: With dead ends: 400 [2023-12-20 22:03:20,682 INFO L226 Difference]: Without dead ends: 262 [2023-12-20 22:03:20,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 22:03:20,683 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 55 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 22:03:20,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 168 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 22:03:20,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2023-12-20 22:03:20,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 260. [2023-12-20 22:03:20,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 179 states have (on average 1.1787709497206704) internal successors, (211), 185 states have internal predecessors, (211), 72 states have call successors, (72), 8 states have call predecessors, (72), 8 states have return successors, (72), 66 states have call predecessors, (72), 72 states have call successors, (72) [2023-12-20 22:03:20,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 355 transitions. [2023-12-20 22:03:20,712 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 355 transitions. Word has length 91 [2023-12-20 22:03:20,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 22:03:20,712 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 355 transitions. [2023-12-20 22:03:20,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2023-12-20 22:03:20,712 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 355 transitions. [2023-12-20 22:03:20,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-20 22:03:20,713 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 22:03:20,713 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] [2023-12-20 22:03:20,718 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-20 22:03:20,918 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 [2023-12-20 22:03:20,919 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 22:03:20,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 22:03:20,919 INFO L85 PathProgramCache]: Analyzing trace with hash 312397077, now seen corresponding path program 1 times [2023-12-20 22:03:20,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 22:03:20,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107635611] [2023-12-20 22:03:20,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:03:20,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 22:03:20,929 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 22:03:20,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [715277988] [2023-12-20 22:03:20,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:03:20,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 22:03:20,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 22:03:20,931 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 22:03:20,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-20 22:03:20,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:03:20,985 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-20 22:03:20,988 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 22:03:21,033 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 156 proven. 12 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-20 22:03:21,034 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 22:03:21,102 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 24 proven. 12 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-12-20 22:03:21,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 22:03:21,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107635611] [2023-12-20 22:03:21,103 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 22:03:21,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715277988] [2023-12-20 22:03:21,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715277988] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 22:03:21,103 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 22:03:21,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-20 22:03:21,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333285135] [2023-12-20 22:03:21,103 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 22:03:21,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 22:03:21,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 22:03:21,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 22:03:21,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-20 22:03:21,105 INFO L87 Difference]: Start difference. First operand 260 states and 355 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) [2023-12-20 22:03:21,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 22:03:21,201 INFO L93 Difference]: Finished difference Result 392 states and 526 transitions. [2023-12-20 22:03:21,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 22:03:21,202 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 [2023-12-20 22:03:21,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 22:03:21,202 INFO L225 Difference]: With dead ends: 392 [2023-12-20 22:03:21,202 INFO L226 Difference]: Without dead ends: 0 [2023-12-20 22:03:21,203 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 [2023-12-20 22:03:21,204 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 33 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 22:03:21,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 75 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 22:03:21,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-20 22:03:21,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-20 22:03:21,204 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) [2023-12-20 22:03:21,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-20 22:03:21,205 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 91 [2023-12-20 22:03:21,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 22:03:21,205 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-20 22:03:21,205 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) [2023-12-20 22:03:21,205 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-20 22:03:21,205 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-20 22:03:21,207 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-20 22:03:21,226 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-20 22:03:21,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-20 22:03:21,414 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-20 22:03:21,897 INFO L899 garLoopResultBuilder]: For program point L52(lines 52 62) no Hoare annotation was computed. [2023-12-20 22:03:21,897 INFO L899 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2023-12-20 22:03:21,897 INFO L899 garLoopResultBuilder]: For program point L19-1(line 19) no Hoare annotation was computed. [2023-12-20 22:03:21,897 INFO L899 garLoopResultBuilder]: For program point L19-3(line 19) no Hoare annotation was computed. [2023-12-20 22:03:21,897 INFO L902 garLoopResultBuilder]: At program point L77(line 77) the Hoare annotation is: true [2023-12-20 22:03:21,897 INFO L902 garLoopResultBuilder]: At program point L77-1(line 77) the Hoare annotation is: true [2023-12-20 22:03:21,897 INFO L899 garLoopResultBuilder]: For program point L44(lines 44 48) no Hoare annotation was computed. [2023-12-20 22:03:21,897 INFO L899 garLoopResultBuilder]: For program point L44-2(lines 44 48) no Hoare annotation was computed. [2023-12-20 22:03:21,898 INFO L899 garLoopResultBuilder]: For program point L69(line 69) no Hoare annotation was computed. [2023-12-20 22:03:21,898 INFO L899 garLoopResultBuilder]: For program point L53(lines 53 61) no Hoare annotation was computed. [2023-12-20 22:03:21,898 INFO L899 garLoopResultBuilder]: For program point L78(line 78) no Hoare annotation was computed. [2023-12-20 22:03:21,898 INFO L899 garLoopResultBuilder]: For program point L54(lines 54 58) no Hoare annotation was computed. [2023-12-20 22:03:21,898 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-20 22:03:21,898 INFO L895 garLoopResultBuilder]: At program point L71(line 71) the Hoare annotation is: (< (mod ~var_1_7~0 256) 1) [2023-12-20 22:03:21,898 INFO L895 garLoopResultBuilder]: At program point L71-1(line 71) the Hoare annotation is: (< (mod ~var_1_7~0 256) 1) [2023-12-20 22:03:21,898 INFO L899 garLoopResultBuilder]: For program point L38(lines 38 64) no Hoare annotation was computed. [2023-12-20 22:03:21,898 INFO L895 garLoopResultBuilder]: At program point L80(line 80) the Hoare annotation is: (<= (mod ~var_1_7~0 256) 0) [2023-12-20 22:03:21,898 INFO L895 garLoopResultBuilder]: At program point L80-1(line 80) the Hoare annotation is: (<= (mod ~var_1_7~0 256) 0) [2023-12-20 22:03:21,898 INFO L899 garLoopResultBuilder]: For program point L72(line 72) no Hoare annotation was computed. [2023-12-20 22:03:21,899 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))))) [2023-12-20 22:03:21,899 INFO L899 garLoopResultBuilder]: For program point L97-3(lines 97 103) no Hoare annotation was computed. [2023-12-20 22:03:21,899 INFO L899 garLoopResultBuilder]: For program point L81(line 81) no Hoare annotation was computed. [2023-12-20 22:03:21,899 INFO L899 garLoopResultBuilder]: For program point L40(lines 40 42) no Hoare annotation was computed. [2023-12-20 22:03:21,899 INFO L899 garLoopResultBuilder]: For program point L40-2(lines 40 42) no Hoare annotation was computed. [2023-12-20 22:03:21,899 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2023-12-20 22:03:21,899 INFO L895 garLoopResultBuilder]: At program point L74(line 74) the Hoare annotation is: (< (mod ~var_1_7~0 256) 1) [2023-12-20 22:03:21,899 INFO L895 garLoopResultBuilder]: At program point L74-1(line 74) the Hoare annotation is: (< (mod ~var_1_7~0 256) 1) [2023-12-20 22:03:21,899 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-20 22:03:21,899 INFO L899 garLoopResultBuilder]: For program point L91(line 91) no Hoare annotation was computed. [2023-12-20 22:03:21,899 INFO L899 garLoopResultBuilder]: For program point L91-1(line 91) no Hoare annotation was computed. [2023-12-20 22:03:21,899 INFO L899 garLoopResultBuilder]: For program point L91-2(line 91) no Hoare annotation was computed. [2023-12-20 22:03:21,899 INFO L899 garLoopResultBuilder]: For program point L91-3(line 91) no Hoare annotation was computed. [2023-12-20 22:03:21,899 INFO L899 garLoopResultBuilder]: For program point L91-5(line 91) no Hoare annotation was computed. [2023-12-20 22:03:21,899 INFO L899 garLoopResultBuilder]: For program point L91-7(line 91) no Hoare annotation was computed. [2023-12-20 22:03:21,899 INFO L895 garLoopResultBuilder]: At program point L83(line 83) the Hoare annotation is: (<= (mod ~var_1_7~0 256) 0) [2023-12-20 22:03:21,900 INFO L895 garLoopResultBuilder]: At program point L83-1(line 83) the Hoare annotation is: (<= (mod ~var_1_7~0 256) 0) [2023-12-20 22:03:21,900 INFO L899 garLoopResultBuilder]: For program point L91-9(line 91) no Hoare annotation was computed. [2023-12-20 22:03:21,900 INFO L899 garLoopResultBuilder]: For program point L91-11(line 91) no Hoare annotation was computed. [2023-12-20 22:03:21,900 INFO L899 garLoopResultBuilder]: For program point L75(line 75) no Hoare annotation was computed. [2023-12-20 22:03:21,900 INFO L895 garLoopResultBuilder]: At program point L67(line 67) the Hoare annotation is: (< (mod ~var_1_7~0 256) 1) [2023-12-20 22:03:21,900 INFO L895 garLoopResultBuilder]: At program point L67-1(line 67) the Hoare annotation is: (< (mod ~var_1_7~0 256) 1) [2023-12-20 22:03:21,900 INFO L899 garLoopResultBuilder]: For program point L84(lines 65 85) no Hoare annotation was computed. [2023-12-20 22:03:21,900 INFO L899 garLoopResultBuilder]: For program point L51(lines 51 63) no Hoare annotation was computed. [2023-12-20 22:03:21,900 INFO L895 garLoopResultBuilder]: At program point L68(line 68) the Hoare annotation is: (< (mod ~var_1_7~0 256) 1) [2023-12-20 22:03:21,900 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line 20) the Hoare annotation is: true [2023-12-20 22:03:21,900 INFO L899 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2023-12-20 22:03:21,900 INFO L899 garLoopResultBuilder]: For program point L20-2(line 20) no Hoare annotation was computed. [2023-12-20 22:03:21,900 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(line 20) no Hoare annotation was computed. [2023-12-20 22:03:21,902 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 22:03:21,904 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-20 22:03:21,913 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.12 10:03:21 BoogieIcfgContainer [2023-12-20 22:03:21,913 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-20 22:03:21,914 INFO L158 Benchmark]: Toolchain (without parser) took 11919.10ms. Allocated memory was 241.2MB in the beginning and 656.4MB in the end (delta: 415.2MB). Free memory was 190.3MB in the beginning and 610.5MB in the end (delta: -420.2MB). Peak memory consumption was 374.6MB. Max. memory is 8.0GB. [2023-12-20 22:03:21,914 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 200.3MB. Free memory is still 151.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-20 22:03:21,914 INFO L158 Benchmark]: CACSL2BoogieTranslator took 227.19ms. Allocated memory is still 241.2MB. Free memory was 190.3MB in the beginning and 177.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-20 22:03:21,914 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.41ms. Allocated memory is still 241.2MB. Free memory was 177.7MB in the beginning and 174.6MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-20 22:03:21,914 INFO L158 Benchmark]: Boogie Preprocessor took 36.91ms. Allocated memory is still 241.2MB. Free memory was 174.6MB in the beginning and 171.5MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-20 22:03:21,914 INFO L158 Benchmark]: RCFGBuilder took 414.29ms. Allocated memory is still 241.2MB. Free memory was 171.5MB in the beginning and 208.3MB in the end (delta: -36.8MB). Peak memory consumption was 22.4MB. Max. memory is 8.0GB. [2023-12-20 22:03:21,915 INFO L158 Benchmark]: TraceAbstraction took 11176.99ms. Allocated memory was 241.2MB in the beginning and 656.4MB in the end (delta: 415.2MB). Free memory was 207.8MB in the beginning and 610.5MB in the end (delta: -402.8MB). Peak memory consumption was 391.0MB. Max. memory is 8.0GB. [2023-12-20 22:03:21,915 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 200.3MB. Free memory is still 151.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 227.19ms. Allocated memory is still 241.2MB. Free memory was 190.3MB in the beginning and 177.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 47.41ms. Allocated memory is still 241.2MB. Free memory was 177.7MB in the beginning and 174.6MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 36.91ms. Allocated memory is still 241.2MB. Free memory was 174.6MB in the beginning and 171.5MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 414.29ms. Allocated memory is still 241.2MB. Free memory was 171.5MB in the beginning and 208.3MB in the end (delta: -36.8MB). Peak memory consumption was 22.4MB. Max. memory is 8.0GB. * TraceAbstraction took 11176.99ms. Allocated memory was 241.2MB in the beginning and 656.4MB in the end (delta: 415.2MB). Free memory was 207.8MB in the beginning and 610.5MB in the end (delta: -402.8MB). Peak memory consumption was 391.0MB. 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, 48 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 11.1s, OverallIterations: 10, TraceHistogramMax: 13, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 629 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 622 mSDsluCounter, 2149 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1369 mSDsCounter, 23 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1012 IncrementalHoareTripleChecker+Invalid, 1035 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 23 mSolverCounterUnsat, 780 mSDtfsCounter, 1012 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1137 GetRequests, 1064 SyntacticMatches, 2 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=260occurred in iteration=9, InterpolantAutomatonStates: 68, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 140 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 15 LocationsWithAnnotation, 281 PreInvPairs, 321 NumberOfFragments, 246 HoareAnnotationTreeSize, 281 FormulaSimplifications, 7725 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 15 FormulaSimplificationsInter, 4327 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 5.1s InterpolantComputationTime, 864 NumberOfCodeBlocks, 864 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 1115 ConstructedInterpolants, 0 QuantifiedInterpolants, 4772 SizeOfPredicates, 66 NumberOfNonLiveVariables, 2153 ConjunctsInSsa, 84 ConjunctsInUnsatCore, 13 InterpolantComputations, 9 PerfectInterpolantSequences, 3972/4056 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! [2023-12-20 22:03:21,980 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...