/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_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/array-crafted/xor5.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 07:02:14,648 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 07:02:14,691 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-16 07:02:14,694 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 07:02:14,694 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 07:02:14,712 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 07:02:14,713 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 07:02:14,713 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 07:02:14,714 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 07:02:14,716 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 07:02:14,716 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 07:02:14,717 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 07:02:14,717 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 07:02:14,718 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 07:02:14,718 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 07:02:14,719 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 07:02:14,719 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 07:02:14,719 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 07:02:14,719 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 07:02:14,719 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 07:02:14,719 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 07:02:14,720 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 07:02:14,720 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 07:02:14,720 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 07:02:14,720 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 07:02:14,720 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 07:02:14,720 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 07:02:14,721 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 07:02:14,721 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 07:02:14,721 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 07:02:14,722 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 07:02:14,722 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 07:02:14,722 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 07:02:14,722 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 07:02:14,722 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 07:02:14,722 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 07:02:14,722 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 07:02:14,723 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 07:02:14,723 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 07:02:14,723 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 07:02:14,723 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 07:02:14,723 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 07:02:14,723 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 07:02:14,723 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 07:02:14,723 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 07:02:14,724 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 07:02:14,724 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 07:02:14,881 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 07:02:14,900 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 07:02:14,901 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 07:02:14,902 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 07:02:14,902 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 07:02:14,904 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/xor5.i [2023-12-16 07:02:15,875 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 07:02:15,995 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 07:02:15,996 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/xor5.i [2023-12-16 07:02:16,000 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/705a4898a/152eb76ff3274ae587e379cc99fb23e9/FLAGf6fb90be7 [2023-12-16 07:02:16,009 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/705a4898a/152eb76ff3274ae587e379cc99fb23e9 [2023-12-16 07:02:16,011 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 07:02:16,013 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 07:02:16,016 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 07:02:16,016 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 07:02:16,019 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 07:02:16,019 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 07:02:16" (1/1) ... [2023-12-16 07:02:16,020 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7901db67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:02:16, skipping insertion in model container [2023-12-16 07:02:16,020 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 07:02:16" (1/1) ... [2023-12-16 07:02:16,035 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 07:02:16,134 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/xor5.i[1364,1377] [2023-12-16 07:02:16,137 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 07:02:16,144 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 07:02:16,160 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/xor5.i[1364,1377] [2023-12-16 07:02:16,160 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 07:02:16,170 INFO L206 MainTranslator]: Completed translation [2023-12-16 07:02:16,170 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:02:16 WrapperNode [2023-12-16 07:02:16,170 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 07:02:16,171 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 07:02:16,171 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 07:02:16,171 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 07:02:16,176 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:02:16" (1/1) ... [2023-12-16 07:02:16,181 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:02:16" (1/1) ... [2023-12-16 07:02:16,192 INFO L138 Inliner]: procedures = 18, calls = 29, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 76 [2023-12-16 07:02:16,192 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 07:02:16,193 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 07:02:16,193 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 07:02:16,193 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 07:02:16,199 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:02:16" (1/1) ... [2023-12-16 07:02:16,200 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:02:16" (1/1) ... [2023-12-16 07:02:16,202 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:02:16" (1/1) ... [2023-12-16 07:02:16,211 INFO L175 MemorySlicer]: Split 20 memory accesses to 3 slices as follows [2, 7, 11]. 55 percent of accesses are in the largest equivalence class. The 9 initializations are split as follows [2, 7, 0]. The 5 writes are split as follows [0, 0, 5]. [2023-12-16 07:02:16,212 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:02:16" (1/1) ... [2023-12-16 07:02:16,212 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:02:16" (1/1) ... [2023-12-16 07:02:16,217 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:02:16" (1/1) ... [2023-12-16 07:02:16,219 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:02:16" (1/1) ... [2023-12-16 07:02:16,219 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:02:16" (1/1) ... [2023-12-16 07:02:16,220 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:02:16" (1/1) ... [2023-12-16 07:02:16,227 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 07:02:16,228 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 07:02:16,228 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 07:02:16,228 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 07:02:16,229 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:02:16" (1/1) ... [2023-12-16 07:02:16,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 07:02:16,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 07:02:16,248 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) [2023-12-16 07:02:16,253 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 [2023-12-16 07:02:16,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 07:02:16,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 07:02:16,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-16 07:02:16,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-12-16 07:02:16,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-16 07:02:16,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-16 07:02:16,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-16 07:02:16,268 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-12-16 07:02:16,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 07:02:16,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 07:02:16,268 INFO L130 BoogieDeclarations]: Found specification of procedure xor [2023-12-16 07:02:16,268 INFO L138 BoogieDeclarations]: Found implementation of procedure xor [2023-12-16 07:02:16,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-16 07:02:16,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-16 07:02:16,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-16 07:02:16,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-12-16 07:02:16,349 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 07:02:16,351 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 07:02:16,506 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 07:02:16,528 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 07:02:16,528 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-12-16 07:02:16,528 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 07:02:16 BoogieIcfgContainer [2023-12-16 07:02:16,528 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 07:02:16,530 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 07:02:16,530 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 07:02:16,532 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 07:02:16,532 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 07:02:16" (1/3) ... [2023-12-16 07:02:16,533 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c0ca4c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 07:02:16, skipping insertion in model container [2023-12-16 07:02:16,533 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:02:16" (2/3) ... [2023-12-16 07:02:16,533 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c0ca4c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 07:02:16, skipping insertion in model container [2023-12-16 07:02:16,533 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 07:02:16" (3/3) ... [2023-12-16 07:02:16,534 INFO L112 eAbstractionObserver]: Analyzing ICFG xor5.i [2023-12-16 07:02:16,546 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 07:02:16,546 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 07:02:16,583 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 07:02:16,591 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;@25bad73, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 07:02:16,591 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 07:02:16,597 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 16 states have (on average 1.5625) internal successors, (25), 17 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 07:02:16,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-16 07:02:16,604 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:02:16,604 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:02:16,605 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:02:16,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:02:16,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1630272060, now seen corresponding path program 1 times [2023-12-16 07:02:16,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:02:16,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [700421330] [2023-12-16 07:02:16,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:02:16,622 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:02:16,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:02:16,625 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 07:02:16,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-16 07:02:16,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:02:16,717 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 07:02:16,720 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:02:16,736 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 07:02:16,737 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 07:02:16,737 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:02:16,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [700421330] [2023-12-16 07:02:16,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [700421330] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 07:02:16,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 07:02:16,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 07:02:16,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729151888] [2023-12-16 07:02:16,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 07:02:16,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 07:02:16,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:02:16,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 07:02:16,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 07:02:16,759 INFO L87 Difference]: Start difference. First operand has 22 states, 16 states have (on average 1.5625) internal successors, (25), 17 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 07:02:16,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:02:16,797 INFO L93 Difference]: Finished difference Result 41 states and 59 transitions. [2023-12-16 07:02:16,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 07:02:16,799 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 26 [2023-12-16 07:02:16,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:02:16,803 INFO L225 Difference]: With dead ends: 41 [2023-12-16 07:02:16,803 INFO L226 Difference]: Without dead ends: 19 [2023-12-16 07:02:16,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 07:02:16,807 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 07:02:16,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 07:02:16,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-12-16 07:02:16,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2023-12-16 07:02:16,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 07:02:16,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2023-12-16 07:02:16,830 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 26 [2023-12-16 07:02:16,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:02:16,830 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2023-12-16 07:02:16,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 07:02:16,830 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2023-12-16 07:02:16,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-16 07:02:16,831 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:02:16,831 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:02:16,836 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-16 07:02:17,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:02:17,033 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:02:17,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:02:17,033 INFO L85 PathProgramCache]: Analyzing trace with hash 970404386, now seen corresponding path program 1 times [2023-12-16 07:02:17,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:02:17,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [808725525] [2023-12-16 07:02:17,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:02:17,034 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:02:17,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:02:17,035 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 07:02:17,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-16 07:02:17,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:02:17,113 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 07:02:17,115 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:02:17,149 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 07:02:17,149 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 07:02:17,150 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:02:17,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [808725525] [2023-12-16 07:02:17,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [808725525] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 07:02:17,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 07:02:17,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 07:02:17,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566352384] [2023-12-16 07:02:17,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 07:02:17,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 07:02:17,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:02:17,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 07:02:17,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 07:02:17,152 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 07:02:17,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:02:17,189 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2023-12-16 07:02:17,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 07:02:17,190 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 26 [2023-12-16 07:02:17,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:02:17,190 INFO L225 Difference]: With dead ends: 36 [2023-12-16 07:02:17,190 INFO L226 Difference]: Without dead ends: 20 [2023-12-16 07:02:17,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 07:02:17,192 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 07:02:17,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 07:02:17,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-12-16 07:02:17,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2023-12-16 07:02:17,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 07:02:17,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2023-12-16 07:02:17,196 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 26 [2023-12-16 07:02:17,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:02:17,196 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2023-12-16 07:02:17,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 07:02:17,197 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2023-12-16 07:02:17,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-16 07:02:17,197 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:02:17,197 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:02:17,202 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-16 07:02:17,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:02:17,400 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:02:17,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:02:17,401 INFO L85 PathProgramCache]: Analyzing trace with hash -2047390395, now seen corresponding path program 1 times [2023-12-16 07:02:17,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:02:17,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [776458966] [2023-12-16 07:02:17,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:02:17,401 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:02:17,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:02:17,404 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 07:02:17,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-16 07:02:17,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:02:17,478 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 07:02:17,480 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:02:17,520 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 07:02:17,520 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 07:02:17,581 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 07:02:17,581 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:02:17,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [776458966] [2023-12-16 07:02:17,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [776458966] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 07:02:17,585 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 07:02:17,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-12-16 07:02:17,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438329008] [2023-12-16 07:02:17,585 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 07:02:17,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 07:02:17,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:02:17,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 07:02:17,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-16 07:02:17,588 INFO L87 Difference]: Start difference. First operand 20 states and 24 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, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-16 07:02:17,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:02:17,657 INFO L93 Difference]: Finished difference Result 37 states and 45 transitions. [2023-12-16 07:02:17,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 07:02:17,659 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, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 27 [2023-12-16 07:02:17,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:02:17,660 INFO L225 Difference]: With dead ends: 37 [2023-12-16 07:02:17,660 INFO L226 Difference]: Without dead ends: 21 [2023-12-16 07:02:17,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-16 07:02:17,663 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 07:02:17,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 66 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 07:02:17,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-12-16 07:02:17,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2023-12-16 07:02:17,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 07:02:17,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2023-12-16 07:02:17,670 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 27 [2023-12-16 07:02:17,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:02:17,670 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2023-12-16 07:02:17,670 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, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-16 07:02:17,671 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2023-12-16 07:02:17,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-16 07:02:17,671 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:02:17,671 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:02:17,676 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-16 07:02:17,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:02:17,874 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:02:17,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:02:17,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1109748094, now seen corresponding path program 2 times [2023-12-16 07:02:17,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:02:17,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [876912621] [2023-12-16 07:02:17,874 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 07:02:17,875 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:02:17,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:02:17,875 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 07:02:17,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-16 07:02:17,932 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-16 07:02:17,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 07:02:17,933 INFO L262 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 07:02:17,935 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:02:17,982 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-16 07:02:17,982 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 07:02:17,982 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:02:17,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [876912621] [2023-12-16 07:02:17,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [876912621] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 07:02:17,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 07:02:17,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 07:02:17,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95301200] [2023-12-16 07:02:17,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 07:02:17,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 07:02:17,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:02:17,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 07:02:17,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 07:02:17,986 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 07:02:18,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:02:18,029 INFO L93 Difference]: Finished difference Result 36 states and 46 transitions. [2023-12-16 07:02:18,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 07:02:18,029 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2023-12-16 07:02:18,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:02:18,030 INFO L225 Difference]: With dead ends: 36 [2023-12-16 07:02:18,030 INFO L226 Difference]: Without dead ends: 22 [2023-12-16 07:02:18,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 07:02:18,035 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 7 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 07:02:18,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 20 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 07:02:18,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-12-16 07:02:18,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-12-16 07:02:18,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 07:02:18,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2023-12-16 07:02:18,042 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 28 [2023-12-16 07:02:18,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:02:18,042 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2023-12-16 07:02:18,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 07:02:18,043 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2023-12-16 07:02:18,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-16 07:02:18,044 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:02:18,044 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:02:18,046 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-16 07:02:18,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:02:18,247 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:02:18,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:02:18,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1189276432, now seen corresponding path program 1 times [2023-12-16 07:02:18,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:02:18,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2057891503] [2023-12-16 07:02:18,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:02:18,248 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:02:18,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:02:18,248 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 07:02:18,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-16 07:02:18,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:02:18,322 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-16 07:02:18,324 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:02:18,444 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 14 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-16 07:02:18,444 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 07:02:18,583 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-16 07:02:18,583 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:02:18,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2057891503] [2023-12-16 07:02:18,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2057891503] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 07:02:18,583 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 07:02:18,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-12-16 07:02:18,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827127357] [2023-12-16 07:02:18,584 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 07:02:18,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-16 07:02:18,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:02:18,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-16 07:02:18,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-12-16 07:02:18,585 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 12 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-12-16 07:02:18,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:02:18,738 INFO L93 Difference]: Finished difference Result 53 states and 63 transitions. [2023-12-16 07:02:18,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 07:02:18,738 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 31 [2023-12-16 07:02:18,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:02:18,739 INFO L225 Difference]: With dead ends: 53 [2023-12-16 07:02:18,739 INFO L226 Difference]: Without dead ends: 42 [2023-12-16 07:02:18,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2023-12-16 07:02:18,740 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 54 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 07:02:18,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 45 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 07:02:18,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-12-16 07:02:18,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 23. [2023-12-16 07:02:18,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 07:02:18,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2023-12-16 07:02:18,744 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 31 [2023-12-16 07:02:18,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:02:18,745 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2023-12-16 07:02:18,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-12-16 07:02:18,745 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2023-12-16 07:02:18,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-16 07:02:18,745 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:02:18,746 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:02:18,748 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-16 07:02:18,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:02:18,949 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:02:18,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:02:18,949 INFO L85 PathProgramCache]: Analyzing trace with hash -989343202, now seen corresponding path program 1 times [2023-12-16 07:02:18,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:02:18,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [698535528] [2023-12-16 07:02:18,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:02:18,950 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:02:18,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:02:18,951 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 07:02:18,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-16 07:02:19,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:02:19,088 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 49 conjunts are in the unsatisfiable core [2023-12-16 07:02:19,094 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:02:19,381 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 07:02:19,381 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 23 [2023-12-16 07:02:19,602 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 07:02:19,603 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 34 [2023-12-16 07:02:19,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 07:02:19,692 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-16 07:02:19,695 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 07:02:19,695 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 58 [2023-12-16 07:02:19,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 07:02:19,899 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-16 07:02:19,902 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 07:02:19,903 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 28 [2023-12-16 07:02:20,023 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-16 07:02:20,024 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 07:02:22,495 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 73 [2023-12-16 07:02:22,501 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 07:02:22,501 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 66 [2023-12-16 07:02:23,981 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-16 07:02:23,982 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:02:23,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [698535528] [2023-12-16 07:02:23,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [698535528] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 07:02:23,982 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 07:02:23,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 23] total 41 [2023-12-16 07:02:23,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326129370] [2023-12-16 07:02:23,982 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 07:02:23,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-12-16 07:02:23,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:02:23,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-12-16 07:02:23,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1455, Unknown=0, NotChecked=0, Total=1640 [2023-12-16 07:02:23,985 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 41 states, 33 states have (on average 1.393939393939394) internal successors, (46), 34 states have internal predecessors, (46), 6 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-16 07:02:26,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:02:26,824 INFO L93 Difference]: Finished difference Result 69 states and 88 transitions. [2023-12-16 07:02:26,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-16 07:02:26,825 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 33 states have (on average 1.393939393939394) internal successors, (46), 34 states have internal predecessors, (46), 6 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 32 [2023-12-16 07:02:26,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:02:26,827 INFO L225 Difference]: With dead ends: 69 [2023-12-16 07:02:26,827 INFO L226 Difference]: Without dead ends: 65 [2023-12-16 07:02:26,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 597 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=290, Invalid=2062, Unknown=0, NotChecked=0, Total=2352 [2023-12-16 07:02:26,829 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 54 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-16 07:02:26,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 166 Invalid, 742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 714 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-16 07:02:26,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-12-16 07:02:26,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 50. [2023-12-16 07:02:26,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 38 states have (on average 1.263157894736842) internal successors, (48), 40 states have internal predecessors, (48), 8 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (12), 7 states have call predecessors, (12), 8 states have call successors, (12) [2023-12-16 07:02:26,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 68 transitions. [2023-12-16 07:02:26,842 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 68 transitions. Word has length 32 [2023-12-16 07:02:26,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:02:26,843 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 68 transitions. [2023-12-16 07:02:26,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 33 states have (on average 1.393939393939394) internal successors, (46), 34 states have internal predecessors, (46), 6 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-16 07:02:26,843 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 68 transitions. [2023-12-16 07:02:26,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-16 07:02:26,843 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:02:26,844 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:02:26,848 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-16 07:02:27,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:02:27,047 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:02:27,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:02:27,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1079180842, now seen corresponding path program 2 times [2023-12-16 07:02:27,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:02:27,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [627535290] [2023-12-16 07:02:27,049 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 07:02:27,049 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:02:27,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:02:27,050 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 07:02:27,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-16 07:02:27,122 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 07:02:27,122 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 07:02:27,124 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 07:02:27,126 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:02:27,183 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-16 07:02:27,183 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 07:02:27,339 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 07:02:27,340 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:02:27,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [627535290] [2023-12-16 07:02:27,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [627535290] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 07:02:27,340 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 07:02:27,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2023-12-16 07:02:27,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778503468] [2023-12-16 07:02:27,340 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 07:02:27,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-16 07:02:27,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:02:27,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-16 07:02:27,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2023-12-16 07:02:27,341 INFO L87 Difference]: Start difference. First operand 50 states and 68 transitions. Second operand has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 1 states have call predecessors, (6), 3 states have call successors, (6) [2023-12-16 07:02:27,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:02:27,534 INFO L93 Difference]: Finished difference Result 66 states and 85 transitions. [2023-12-16 07:02:27,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 07:02:27,534 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 1 states have call predecessors, (6), 3 states have call successors, (6) Word has length 33 [2023-12-16 07:02:27,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:02:27,535 INFO L225 Difference]: With dead ends: 66 [2023-12-16 07:02:27,535 INFO L226 Difference]: Without dead ends: 45 [2023-12-16 07:02:27,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2023-12-16 07:02:27,536 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 62 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 07:02:27,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 93 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 07:02:27,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-12-16 07:02:27,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 41. [2023-12-16 07:02:27,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 32 states have (on average 1.15625) internal successors, (37), 33 states have internal predecessors, (37), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-16 07:02:27,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2023-12-16 07:02:27,542 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 33 [2023-12-16 07:02:27,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:02:27,542 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2023-12-16 07:02:27,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 1 states have call predecessors, (6), 3 states have call successors, (6) [2023-12-16 07:02:27,542 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2023-12-16 07:02:27,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-16 07:02:27,542 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:02:27,543 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:02:27,556 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-16 07:02:27,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:02:27,754 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:02:27,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:02:27,755 INFO L85 PathProgramCache]: Analyzing trace with hash -52312319, now seen corresponding path program 3 times [2023-12-16 07:02:27,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:02:27,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1003114847] [2023-12-16 07:02:27,755 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 07:02:27,755 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:02:27,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:02:27,756 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 07:02:27,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-16 07:02:27,831 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-16 07:02:27,831 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 07:02:27,834 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 07:02:27,835 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:02:27,896 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 07:02:27,896 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 07:02:28,040 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 07:02:28,040 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:02:28,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1003114847] [2023-12-16 07:02:28,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1003114847] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 07:02:28,040 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 07:02:28,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 14 [2023-12-16 07:02:28,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315806035] [2023-12-16 07:02:28,040 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 07:02:28,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-16 07:02:28,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:02:28,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-16 07:02:28,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-12-16 07:02:28,041 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 1 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-16 07:02:28,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:02:28,283 INFO L93 Difference]: Finished difference Result 62 states and 75 transitions. [2023-12-16 07:02:28,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 07:02:28,285 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 1 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 33 [2023-12-16 07:02:28,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:02:28,286 INFO L225 Difference]: With dead ends: 62 [2023-12-16 07:02:28,286 INFO L226 Difference]: Without dead ends: 46 [2023-12-16 07:02:28,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2023-12-16 07:02:28,288 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 51 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 07:02:28,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 100 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 07:02:28,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2023-12-16 07:02:28,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 42. [2023-12-16 07:02:28,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 34 states have internal predecessors, (38), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-16 07:02:28,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 50 transitions. [2023-12-16 07:02:28,305 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 50 transitions. Word has length 33 [2023-12-16 07:02:28,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:02:28,306 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 50 transitions. [2023-12-16 07:02:28,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 1 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-16 07:02:28,306 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 50 transitions. [2023-12-16 07:02:28,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-16 07:02:28,306 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:02:28,306 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:02:28,310 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-16 07:02:28,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:02:28,510 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:02:28,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:02:28,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1132859280, now seen corresponding path program 4 times [2023-12-16 07:02:28,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:02:28,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1855741771] [2023-12-16 07:02:28,511 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-16 07:02:28,511 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:02:28,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:02:28,511 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 07:02:28,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-16 07:02:28,600 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-16 07:02:28,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 07:02:28,603 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 07:02:28,605 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:02:28,695 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-16 07:02:28,695 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 07:02:28,861 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-16 07:02:28,862 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:02:28,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1855741771] [2023-12-16 07:02:28,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1855741771] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 07:02:28,862 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 07:02:28,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-12-16 07:02:28,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539901990] [2023-12-16 07:02:28,862 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 07:02:28,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-16 07:02:28,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:02:28,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-16 07:02:28,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2023-12-16 07:02:28,864 INFO L87 Difference]: Start difference. First operand 42 states and 50 transitions. Second operand has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-12-16 07:02:29,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:02:29,047 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2023-12-16 07:02:29,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 07:02:29,048 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 35 [2023-12-16 07:02:29,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:02:29,048 INFO L225 Difference]: With dead ends: 51 [2023-12-16 07:02:29,048 INFO L226 Difference]: Without dead ends: 25 [2023-12-16 07:02:29,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2023-12-16 07:02:29,049 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 1 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 07:02:29,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 95 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 07:02:29,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-12-16 07:02:29,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2023-12-16 07:02:29,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 07:02:29,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2023-12-16 07:02:29,052 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 35 [2023-12-16 07:02:29,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:02:29,052 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2023-12-16 07:02:29,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-12-16 07:02:29,052 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2023-12-16 07:02:29,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-16 07:02:29,053 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:02:29,053 INFO L195 NwaCegarLoop]: trace histogram [6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:02:29,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-16 07:02:29,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:02:29,256 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:02:29,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:02:29,257 INFO L85 PathProgramCache]: Analyzing trace with hash -385230635, now seen corresponding path program 5 times [2023-12-16 07:02:29,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:02:29,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1653806624] [2023-12-16 07:02:29,257 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-16 07:02:29,257 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:02:29,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:02:29,258 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 07:02:29,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-16 07:02:29,336 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-12-16 07:02:29,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 07:02:29,340 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-16 07:02:29,342 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:02:29,442 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 29 proven. 14 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-16 07:02:29,443 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 07:02:29,613 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 14 proven. 12 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-16 07:02:29,614 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:02:29,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1653806624] [2023-12-16 07:02:29,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1653806624] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 07:02:29,614 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 07:02:29,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 16 [2023-12-16 07:02:29,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767850786] [2023-12-16 07:02:29,615 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 07:02:29,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-16 07:02:29,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:02:29,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-16 07:02:29,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2023-12-16 07:02:29,616 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2023-12-16 07:02:30,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:02:30,090 INFO L93 Difference]: Finished difference Result 79 states and 98 transitions. [2023-12-16 07:02:30,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-16 07:02:30,091 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) Word has length 36 [2023-12-16 07:02:30,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:02:30,091 INFO L225 Difference]: With dead ends: 79 [2023-12-16 07:02:30,091 INFO L226 Difference]: Without dead ends: 64 [2023-12-16 07:02:30,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=202, Invalid=728, Unknown=0, NotChecked=0, Total=930 [2023-12-16 07:02:30,092 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 102 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 07:02:30,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 88 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 07:02:30,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-12-16 07:02:30,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 47. [2023-12-16 07:02:30,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 38 states have (on average 1.1578947368421053) internal successors, (44), 38 states have internal predecessors, (44), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2023-12-16 07:02:30,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 57 transitions. [2023-12-16 07:02:30,098 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 57 transitions. Word has length 36 [2023-12-16 07:02:30,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:02:30,098 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 57 transitions. [2023-12-16 07:02:30,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2023-12-16 07:02:30,098 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 57 transitions. [2023-12-16 07:02:30,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-16 07:02:30,099 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:02:30,099 INFO L195 NwaCegarLoop]: trace histogram [6, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:02:30,112 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-16 07:02:30,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:02:30,302 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:02:30,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:02:30,303 INFO L85 PathProgramCache]: Analyzing trace with hash -209256219, now seen corresponding path program 6 times [2023-12-16 07:02:30,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:02:30,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1656241079] [2023-12-16 07:02:30,303 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-16 07:02:30,303 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:02:30,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:02:30,304 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 07:02:30,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-16 07:02:30,540 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-12-16 07:02:30,540 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 07:02:30,546 WARN L260 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 63 conjunts are in the unsatisfiable core [2023-12-16 07:02:30,548 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:02:30,582 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-16 07:02:30,875 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 07:02:30,875 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 33 [2023-12-16 07:02:31,154 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 07:02:31,154 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 69 treesize of output 47 [2023-12-16 07:02:31,260 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 07:02:31,261 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 47 [2023-12-16 07:02:31,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 07:02:31,376 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-16 07:02:31,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 07:02:31,381 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 07:02:31,381 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 89 treesize of output 71 [2023-12-16 07:02:31,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 07:02:31,669 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-16 07:02:31,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 07:02:31,676 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 07:02:31,676 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 78 treesize of output 37 [2023-12-16 07:02:31,827 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 2 proven. 36 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-16 07:02:31,827 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 07:02:43,900 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 07:02:43,900 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 378 treesize of output 230 [2023-12-16 07:02:44,884 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 47 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-16 07:02:44,884 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:02:44,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1656241079] [2023-12-16 07:02:44,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1656241079] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 07:02:44,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 07:02:44,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 29] total 49 [2023-12-16 07:02:44,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715269328] [2023-12-16 07:02:44,885 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 07:02:44,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-12-16 07:02:44,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:02:44,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-12-16 07:02:44,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=252, Invalid=2098, Unknown=2, NotChecked=0, Total=2352 [2023-12-16 07:02:44,888 INFO L87 Difference]: Start difference. First operand 47 states and 57 transitions. Second operand has 49 states, 41 states have (on average 1.2682926829268293) internal successors, (52), 42 states have internal predecessors, (52), 6 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-16 07:03:01,427 WARN L293 SmtUtils]: Spent 15.27s on a formula simplification. DAG size of input: 211 DAG size of output: 206 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-16 07:03:23,768 WARN L293 SmtUtils]: Spent 16.99s on a formula simplification. DAG size of input: 192 DAG size of output: 187 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2023-12-16 07:03:34,215 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 07:03:34,215 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 07:03:34,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-16 07:03:34,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1018 ImplicationChecksByTransitivity, 50.9s TimeCoverageRelationStatistics Valid=463, Invalid=3195, Unknown=2, NotChecked=0, Total=3660 [2023-12-16 07:03:34,528 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 41 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2023-12-16 07:03:34,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 69 Invalid, 689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 640 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2023-12-16 07:03:34,529 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 07:03:34,537 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-16 07:03:34,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:03:34,733 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (47states) and FLOYD_HOARE automaton (currently 29 states, 49 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-15-3-2-1 term,while SimplifyDDA2 was simplifying 3 xjuncts wrt. a ∧-14-3-2-1 context. [2023-12-16 07:03:34,737 INFO L445 BasicCegarLoop]: Path program histogram: [6, 2, 1, 1, 1] [2023-12-16 07:03:34,739 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 07:03:34,740 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 07:03:34 BoogieIcfgContainer [2023-12-16 07:03:34,740 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 07:03:34,741 INFO L158 Benchmark]: Toolchain (without parser) took 78727.89ms. Allocated memory was 216.0MB in the beginning and 260.0MB in the end (delta: 44.0MB). Free memory was 171.1MB in the beginning and 124.3MB in the end (delta: 46.8MB). Peak memory consumption was 92.3MB. Max. memory is 8.0GB. [2023-12-16 07:03:34,741 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 179.3MB. Free memory was 136.1MB in the beginning and 135.9MB in the end (delta: 176.2kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 07:03:34,741 INFO L158 Benchmark]: CACSL2BoogieTranslator took 154.99ms. Allocated memory is still 216.0MB. Free memory was 171.1MB in the beginning and 159.0MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-16 07:03:34,741 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.11ms. Allocated memory is still 216.0MB. Free memory was 159.0MB in the beginning and 157.5MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-16 07:03:34,741 INFO L158 Benchmark]: Boogie Preprocessor took 34.90ms. Allocated memory is still 216.0MB. Free memory was 157.5MB in the beginning and 155.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 07:03:34,742 INFO L158 Benchmark]: RCFGBuilder took 300.38ms. Allocated memory is still 216.0MB. Free memory was 155.2MB in the beginning and 139.5MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-16 07:03:34,742 INFO L158 Benchmark]: TraceAbstraction took 78210.56ms. Allocated memory was 216.0MB in the beginning and 260.0MB in the end (delta: 44.0MB). Free memory was 138.7MB in the beginning and 124.3MB in the end (delta: 14.4MB). Peak memory consumption was 59.8MB. Max. memory is 8.0GB. [2023-12-16 07:03:34,743 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 179.3MB. Free memory was 136.1MB in the beginning and 135.9MB in the end (delta: 176.2kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 154.99ms. Allocated memory is still 216.0MB. Free memory was 171.1MB in the beginning and 159.0MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 21.11ms. Allocated memory is still 216.0MB. Free memory was 159.0MB in the beginning and 157.5MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 34.90ms. Allocated memory is still 216.0MB. Free memory was 157.5MB in the beginning and 155.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 300.38ms. Allocated memory is still 216.0MB. Free memory was 155.2MB in the beginning and 139.5MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * TraceAbstraction took 78210.56ms. Allocated memory was 216.0MB in the beginning and 260.0MB in the end (delta: 44.0MB). Free memory was 138.7MB in the beginning and 124.3MB in the end (delta: 14.4MB). Peak memory consumption was 59.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 57]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 57). Cancelled while NwaCegarLoop was constructing difference of abstraction (47states) and FLOYD_HOARE automaton (currently 29 states, 49 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-15-3-2-1 term,while SimplifyDDA2 was simplifying 3 xjuncts wrt. a ∧-14-3-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 78.2s, OverallIterations: 11, TraceHistogramMax: 6, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 54.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 383 SdHoareTripleChecker+Valid, 10.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 372 mSDsluCounter, 793 SdHoareTripleChecker+Invalid, 10.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 605 mSDsCounter, 153 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2267 IncrementalHoareTripleChecker+Invalid, 2420 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 153 mSolverCounterUnsat, 188 mSDtfsCounter, 2267 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 631 GetRequests, 436 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 1900 ImplicationChecksByTransitivity, 56.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred in iteration=6, InterpolantAutomatonStates: 100, 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, 59 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 20.7s InterpolantComputationTime, 344 NumberOfCodeBlocks, 310 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 589 ConstructedInterpolants, 5 QuantifiedInterpolants, 8216 SizeOfPredicates, 60 NumberOfNonLiveVariables, 989 ConjunctsInSsa, 166 ConjunctsInUnsatCore, 19 InterpolantComputations, 3 PerfectInterpolantSequences, 395/591 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown