/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/loops/eureka_05.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 16:24:08,246 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 16:24:08,375 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 16:24:08,379 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 16:24:08,379 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 16:24:08,398 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 16:24:08,398 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 16:24:08,398 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 16:24:08,399 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 16:24:08,399 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 16:24:08,400 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 16:24:08,400 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 16:24:08,401 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 16:24:08,401 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 16:24:08,401 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 16:24:08,402 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 16:24:08,402 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 16:24:08,402 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 16:24:08,402 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 16:24:08,403 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 16:24:08,403 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 16:24:08,403 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 16:24:08,404 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 16:24:08,404 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 16:24:08,404 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 16:24:08,404 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 16:24:08,405 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 16:24:08,405 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 16:24:08,405 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 16:24:08,405 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 16:24:08,405 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 16:24:08,406 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 16:24:08,406 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 16:24:08,406 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 16:24:08,406 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 16:24:08,406 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 16:24:08,407 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 16:24:08,407 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 16:24:08,407 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 16:24:08,407 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 16:24:08,407 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 16:24:08,408 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 16:24:08,408 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 16:24:08,408 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 16:24:08,408 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 16:24:08,408 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 16:24:08,408 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 16:24:08,586 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 16:24:08,613 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 16:24:08,616 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 16:24:08,616 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 16:24:08,617 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 16:24:08,619 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/eureka_05.i [2023-12-16 16:24:09,783 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 16:24:09,961 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 16:24:09,961 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/eureka_05.i [2023-12-16 16:24:09,968 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95bff304c/d5077be6e6de4878a9c4383757b57d25/FLAG4dd9b3146 [2023-12-16 16:24:09,983 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95bff304c/d5077be6e6de4878a9c4383757b57d25 [2023-12-16 16:24:09,986 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 16:24:09,988 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 16:24:09,989 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 16:24:09,989 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 16:24:09,993 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 16:24:09,994 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:24:09" (1/1) ... [2023-12-16 16:24:09,995 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64a3a648 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:24:09, skipping insertion in model container [2023-12-16 16:24:09,995 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:24:09" (1/1) ... [2023-12-16 16:24:10,016 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 16:24:10,128 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/eureka_05.i[810,823] [2023-12-16 16:24:10,139 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 16:24:10,147 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 16:24:10,158 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/eureka_05.i[810,823] [2023-12-16 16:24:10,174 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 16:24:10,185 INFO L206 MainTranslator]: Completed translation [2023-12-16 16:24:10,186 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:24:10 WrapperNode [2023-12-16 16:24:10,186 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 16:24:10,187 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 16:24:10,187 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 16:24:10,187 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 16:24:10,191 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:24:10" (1/1) ... [2023-12-16 16:24:10,197 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:24:10" (1/1) ... [2023-12-16 16:24:10,215 INFO L138 Inliner]: procedures = 19, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 82 [2023-12-16 16:24:10,215 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 16:24:10,216 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 16:24:10,216 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 16:24:10,216 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 16:24:10,228 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:24:10" (1/1) ... [2023-12-16 16:24:10,228 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:24:10" (1/1) ... [2023-12-16 16:24:10,238 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:24:10" (1/1) ... [2023-12-16 16:24:10,248 INFO L175 MemorySlicer]: Split 15 memory accesses to 3 slices as follows [2, 2, 11]. 73 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 0, 5]. The 3 writes are split as follows [0, 1, 2]. [2023-12-16 16:24:10,248 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:24:10" (1/1) ... [2023-12-16 16:24:10,248 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:24:10" (1/1) ... [2023-12-16 16:24:10,259 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:24:10" (1/1) ... [2023-12-16 16:24:10,262 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:24:10" (1/1) ... [2023-12-16 16:24:10,263 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:24:10" (1/1) ... [2023-12-16 16:24:10,264 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:24:10" (1/1) ... [2023-12-16 16:24:10,266 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 16:24:10,267 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 16:24:10,267 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 16:24:10,267 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 16:24:10,268 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:24:10" (1/1) ... [2023-12-16 16:24:10,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 16:24:10,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 16:24:10,304 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 16:24:10,325 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 16:24:10,330 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 16:24:10,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 16:24:10,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-16 16:24:10,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-12-16 16:24:10,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2023-12-16 16:24:10,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2023-12-16 16:24:10,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#2 [2023-12-16 16:24:10,331 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-16 16:24:10,331 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-16 16:24:10,331 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-16 16:24:10,331 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-12-16 16:24:10,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 16:24:10,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 16:24:10,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-16 16:24:10,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-16 16:24:10,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-16 16:24:10,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-12-16 16:24:10,399 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 16:24:10,401 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 16:24:10,571 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 16:24:10,631 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 16:24:10,631 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-12-16 16:24:10,636 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:24:10 BoogieIcfgContainer [2023-12-16 16:24:10,636 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 16:24:10,638 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 16:24:10,639 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 16:24:10,641 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 16:24:10,641 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 04:24:09" (1/3) ... [2023-12-16 16:24:10,642 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@526428f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:24:10, skipping insertion in model container [2023-12-16 16:24:10,642 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:24:10" (2/3) ... [2023-12-16 16:24:10,642 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@526428f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:24:10, skipping insertion in model container [2023-12-16 16:24:10,642 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:24:10" (3/3) ... [2023-12-16 16:24:10,643 INFO L112 eAbstractionObserver]: Analyzing ICFG eureka_05.i [2023-12-16 16:24:10,673 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 16:24:10,673 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 16:24:10,759 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 16:24:10,766 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;@5cc5ddf4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 16:24:10,766 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 16:24:10,776 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 15 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:24:10,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-16 16:24:10,793 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:24:10,793 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:24:10,794 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:24:10,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:24:10,800 INFO L85 PathProgramCache]: Analyzing trace with hash -831585943, now seen corresponding path program 1 times [2023-12-16 16:24:10,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:24:10,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1022449713] [2023-12-16 16:24:10,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:24:10,813 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 16:24:10,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:24:10,828 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 16:24:10,871 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 16:24:10,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:24:10,971 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 16:24:10,974 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:24:11,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 16:24:11,018 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 16:24:11,018 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:24:11,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1022449713] [2023-12-16 16:24:11,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1022449713] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 16:24:11,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 16:24:11,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 16:24:11,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416638601] [2023-12-16 16:24:11,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 16:24:11,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 16:24:11,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:24:11,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 16:24:11,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 16:24:11,047 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 15 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:24:11,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:24:11,110 INFO L93 Difference]: Finished difference Result 31 states and 49 transitions. [2023-12-16 16:24:11,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 16:24:11,112 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-12-16 16:24:11,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:24:11,117 INFO L225 Difference]: With dead ends: 31 [2023-12-16 16:24:11,117 INFO L226 Difference]: Without dead ends: 15 [2023-12-16 16:24:11,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 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 16:24:11,121 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 16:24:11,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 16:24:11,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-12-16 16:24:11,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2023-12-16 16:24:11,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:24:11,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2023-12-16 16:24:11,146 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 19 transitions. Word has length 8 [2023-12-16 16:24:11,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:24:11,146 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 19 transitions. [2023-12-16 16:24:11,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:24:11,147 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 19 transitions. [2023-12-16 16:24:11,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-16 16:24:11,147 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:24:11,147 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:24:11,150 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 16:24:11,350 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 16:24:11,351 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:24:11,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:24:11,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1273734631, now seen corresponding path program 1 times [2023-12-16 16:24:11,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:24:11,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [262105333] [2023-12-16 16:24:11,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:24:11,354 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 16:24:11,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:24:11,355 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 16:24:11,357 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 16:24:11,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:24:11,413 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 16:24:11,415 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:24:11,442 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 16:24:11,442 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:24:11,468 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 16:24:11,468 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:24:11,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [262105333] [2023-12-16 16:24:11,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [262105333] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 16:24:11,472 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 16:24:11,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-12-16 16:24:11,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161795008] [2023-12-16 16:24:11,472 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 16:24:11,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 16:24:11,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:24:11,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 16:24:11,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-16 16:24:11,474 INFO L87 Difference]: Start difference. First operand 15 states and 19 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:24:11,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:24:11,527 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2023-12-16 16:24:11,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 16:24:11,528 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-12-16 16:24:11,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:24:11,528 INFO L225 Difference]: With dead ends: 40 [2023-12-16 16:24:11,528 INFO L226 Difference]: Without dead ends: 28 [2023-12-16 16:24:11,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-12-16 16:24:11,530 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 8 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 16:24:11,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 66 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 16:24:11,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-12-16 16:24:11,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 18. [2023-12-16 16:24:11,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:24:11,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2023-12-16 16:24:11,533 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 9 [2023-12-16 16:24:11,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:24:11,533 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2023-12-16 16:24:11,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:24:11,534 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2023-12-16 16:24:11,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-16 16:24:11,534 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:24:11,534 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:24:11,536 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 (3)] Ended with exit code 0 [2023-12-16 16:24:11,736 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 16:24:11,736 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:24:11,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:24:11,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1185436311, now seen corresponding path program 2 times [2023-12-16 16:24:11,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:24:11,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [162325244] [2023-12-16 16:24:11,738 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 16:24:11,738 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 16:24:11,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:24:11,739 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 16:24:11,740 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 16:24:11,796 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-16 16:24:11,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 16:24:11,797 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 16:24:11,798 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:24:11,822 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-16 16:24:11,822 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 16:24:11,823 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:24:11,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [162325244] [2023-12-16 16:24:11,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [162325244] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 16:24:11,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 16:24:11,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 16:24:11,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527312314] [2023-12-16 16:24:11,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 16:24:11,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 16:24:11,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:24:11,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 16:24:11,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 16:24:11,824 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:24:11,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:24:11,854 INFO L93 Difference]: Finished difference Result 29 states and 36 transitions. [2023-12-16 16:24:11,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 16:24:11,855 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-12-16 16:24:11,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:24:11,855 INFO L225 Difference]: With dead ends: 29 [2023-12-16 16:24:11,856 INFO L226 Difference]: Without dead ends: 23 [2023-12-16 16:24:11,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 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 16:24:11,857 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 27 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 16:24:11,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 18 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 16:24:11,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-12-16 16:24:11,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 19. [2023-12-16 16:24:11,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:24:11,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2023-12-16 16:24:11,861 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 12 [2023-12-16 16:24:11,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:24:11,861 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2023-12-16 16:24:11,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:24:11,861 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2023-12-16 16:24:11,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-16 16:24:11,862 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:24:11,862 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:24:11,866 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 16:24:12,064 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 16:24:12,064 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:24:12,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:24:12,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1895147126, now seen corresponding path program 1 times [2023-12-16 16:24:12,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:24:12,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1194765909] [2023-12-16 16:24:12,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:24:12,065 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 16:24:12,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:24:12,066 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 16:24:12,088 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 16:24:12,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:24:12,124 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 16:24:12,125 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:24:12,164 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-16 16:24:12,164 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:24:12,258 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-16 16:24:12,258 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:24:12,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1194765909] [2023-12-16 16:24:12,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1194765909] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 16:24:12,258 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 16:24:12,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-12-16 16:24:12,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535903183] [2023-12-16 16:24:12,259 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 16:24:12,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-16 16:24:12,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:24:12,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-16 16:24:12,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-12-16 16:24:12,260 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 12 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:24:12,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:24:12,414 INFO L93 Difference]: Finished difference Result 54 states and 62 transitions. [2023-12-16 16:24:12,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 16:24:12,414 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-12-16 16:24:12,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:24:12,415 INFO L225 Difference]: With dead ends: 54 [2023-12-16 16:24:12,415 INFO L226 Difference]: Without dead ends: 41 [2023-12-16 16:24:12,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2023-12-16 16:24:12,416 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 54 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 16:24:12,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 136 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 16:24:12,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-12-16 16:24:12,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 20. [2023-12-16 16:24:12,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:24:12,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2023-12-16 16:24:12,421 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 15 [2023-12-16 16:24:12,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:24:12,421 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2023-12-16 16:24:12,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:24:12,422 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2023-12-16 16:24:12,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-16 16:24:12,422 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:24:12,422 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:24:12,445 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 (5)] Ended with exit code 0 [2023-12-16 16:24:12,625 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 16:24:12,626 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:24:12,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:24:12,626 INFO L85 PathProgramCache]: Analyzing trace with hash -939468070, now seen corresponding path program 2 times [2023-12-16 16:24:12,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:24:12,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1569660907] [2023-12-16 16:24:12,627 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 16:24:12,627 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 16:24:12,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:24:12,629 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 16:24:12,630 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 16:24:12,688 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 16:24:12,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 16:24:12,690 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 16:24:12,691 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:24:12,737 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-16 16:24:12,737 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 16:24:12,737 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:24:12,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1569660907] [2023-12-16 16:24:12,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1569660907] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 16:24:12,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 16:24:12,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 16:24:12,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129974462] [2023-12-16 16:24:12,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 16:24:12,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 16:24:12,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:24:12,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 16:24:12,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 16:24:12,739 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:24:12,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:24:12,803 INFO L93 Difference]: Finished difference Result 38 states and 49 transitions. [2023-12-16 16:24:12,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 16:24:12,807 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-12-16 16:24:12,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:24:12,811 INFO L225 Difference]: With dead ends: 38 [2023-12-16 16:24:12,811 INFO L226 Difference]: Without dead ends: 27 [2023-12-16 16:24:12,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-16 16:24:12,812 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 28 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 16:24:12,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 22 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 16:24:12,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-12-16 16:24:12,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 21. [2023-12-16 16:24:12,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:24:12,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2023-12-16 16:24:12,821 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 16 [2023-12-16 16:24:12,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:24:12,821 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2023-12-16 16:24:12,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:24:12,822 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2023-12-16 16:24:12,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-16 16:24:12,822 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:24:12,823 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:24:12,826 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 (6)] Ended with exit code 0 [2023-12-16 16:24:13,025 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 16:24:13,027 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:24:13,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:24:13,027 INFO L85 PathProgramCache]: Analyzing trace with hash -631693928, now seen corresponding path program 1 times [2023-12-16 16:24:13,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:24:13,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [635386550] [2023-12-16 16:24:13,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:24:13,028 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 16:24:13,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:24:13,030 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 16:24:13,032 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 16:24:13,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:24:13,121 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 16:24:13,123 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:24:13,203 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-16 16:24:13,203 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:24:13,270 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-16 16:24:13,271 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:24:13,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [635386550] [2023-12-16 16:24:13,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [635386550] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 16:24:13,271 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 16:24:13,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-12-16 16:24:13,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297515982] [2023-12-16 16:24:13,271 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 16:24:13,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-16 16:24:13,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:24:13,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-16 16:24:13,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-16 16:24:13,272 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 10 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:24:13,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:24:13,473 INFO L93 Difference]: Finished difference Result 55 states and 76 transitions. [2023-12-16 16:24:13,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-16 16:24:13,474 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-12-16 16:24:13,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:24:13,475 INFO L225 Difference]: With dead ends: 55 [2023-12-16 16:24:13,475 INFO L226 Difference]: Without dead ends: 44 [2023-12-16 16:24:13,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=193, Unknown=0, NotChecked=0, Total=306 [2023-12-16 16:24:13,476 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 112 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 16:24:13,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 34 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 16:24:13,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-12-16 16:24:13,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 39. [2023-12-16 16:24:13,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.3157894736842106) internal successors, (50), 38 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:24:13,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 50 transitions. [2023-12-16 16:24:13,483 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 50 transitions. Word has length 19 [2023-12-16 16:24:13,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:24:13,483 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 50 transitions. [2023-12-16 16:24:13,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:24:13,483 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 50 transitions. [2023-12-16 16:24:13,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-16 16:24:13,484 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:24:13,484 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:24:13,501 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 16:24:13,687 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 16:24:13,688 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:24:13,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:24:13,688 INFO L85 PathProgramCache]: Analyzing trace with hash -2077578918, now seen corresponding path program 2 times [2023-12-16 16:24:13,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:24:13,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1295549391] [2023-12-16 16:24:13,689 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 16:24:13,689 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 16:24:13,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:24:13,690 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 16:24:13,691 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 16:24:13,762 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 16:24:13,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 16:24:13,765 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 16:24:13,767 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:24:13,869 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-12-16 16:24:13,870 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:24:13,952 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-12-16 16:24:13,952 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:24:13,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1295549391] [2023-12-16 16:24:13,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1295549391] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 16:24:13,953 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 16:24:13,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-12-16 16:24:13,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332307345] [2023-12-16 16:24:13,953 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 16:24:13,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 16:24:13,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:24:13,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 16:24:13,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 16:24:13,955 INFO L87 Difference]: Start difference. First operand 39 states and 50 transitions. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:24:14,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:24:14,054 INFO L93 Difference]: Finished difference Result 55 states and 72 transitions. [2023-12-16 16:24:14,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 16:24:14,054 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2023-12-16 16:24:14,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:24:14,055 INFO L225 Difference]: With dead ends: 55 [2023-12-16 16:24:14,055 INFO L226 Difference]: Without dead ends: 49 [2023-12-16 16:24:14,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2023-12-16 16:24:14,056 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 45 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 16:24:14,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 37 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 16:24:14,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-12-16 16:24:14,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2023-12-16 16:24:14,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.3125) internal successors, (63), 48 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:24:14,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 63 transitions. [2023-12-16 16:24:14,065 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 63 transitions. Word has length 28 [2023-12-16 16:24:14,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:24:14,065 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 63 transitions. [2023-12-16 16:24:14,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:24:14,066 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 63 transitions. [2023-12-16 16:24:14,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-16 16:24:14,066 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:24:14,066 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:24:14,077 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 (8)] Ended with exit code 0 [2023-12-16 16:24:14,273 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 16:24:14,274 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:24:14,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:24:14,276 INFO L85 PathProgramCache]: Analyzing trace with hash 2075651161, now seen corresponding path program 3 times [2023-12-16 16:24:14,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:24:14,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [516056343] [2023-12-16 16:24:14,277 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 16:24:14,277 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 16:24:14,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:24:14,278 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 16:24:14,280 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 16:24:14,340 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-16 16:24:14,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 16:24:14,343 INFO L262 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-16 16:24:14,345 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:24:14,389 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 17 treesize of output 13 [2023-12-16 16:24:15,014 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-16 16:24:15,020 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 16:24:15,021 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 38 treesize of output 25 [2023-12-16 16:24:15,041 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2023-12-16 16:24:15,041 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 16:24:15,041 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:24:15,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [516056343] [2023-12-16 16:24:15,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [516056343] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 16:24:15,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 16:24:15,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 16:24:15,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278285113] [2023-12-16 16:24:15,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 16:24:15,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 16:24:15,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:24:15,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 16:24:15,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-16 16:24:15,043 INFO L87 Difference]: Start difference. First operand 49 states and 63 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:24:15,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:24:15,176 INFO L93 Difference]: Finished difference Result 54 states and 68 transitions. [2023-12-16 16:24:15,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 16:24:15,177 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2023-12-16 16:24:15,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:24:15,177 INFO L225 Difference]: With dead ends: 54 [2023-12-16 16:24:15,178 INFO L226 Difference]: Without dead ends: 52 [2023-12-16 16:24:15,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-12-16 16:24:15,178 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 30 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 16:24:15,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 34 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 16:24:15,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-12-16 16:24:15,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2023-12-16 16:24:15,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.3) internal successors, (65), 50 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:24:15,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 65 transitions. [2023-12-16 16:24:15,194 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 65 transitions. Word has length 43 [2023-12-16 16:24:15,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:24:15,195 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 65 transitions. [2023-12-16 16:24:15,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:24:15,195 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 65 transitions. [2023-12-16 16:24:15,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-16 16:24:15,196 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:24:15,196 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:24:15,213 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 16:24:15,399 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 16:24:15,399 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:24:15,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:24:15,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1084846963, now seen corresponding path program 1 times [2023-12-16 16:24:15,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:24:15,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [677539446] [2023-12-16 16:24:15,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:24:15,400 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 16:24:15,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:24:15,401 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 16:24:15,406 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 16:24:15,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:24:15,508 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-16 16:24:15,510 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:24:15,626 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 25 proven. 37 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-12-16 16:24:15,627 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:24:15,787 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 25 proven. 37 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-12-16 16:24:15,788 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:24:15,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [677539446] [2023-12-16 16:24:15,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [677539446] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 16:24:15,788 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 16:24:15,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-12-16 16:24:15,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627609349] [2023-12-16 16:24:15,788 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 16:24:15,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-16 16:24:15,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:24:15,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-16 16:24:15,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2023-12-16 16:24:15,790 INFO L87 Difference]: Start difference. First operand 51 states and 65 transitions. Second operand has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 13 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:24:16,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:24:16,101 INFO L93 Difference]: Finished difference Result 76 states and 98 transitions. [2023-12-16 16:24:16,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-16 16:24:16,102 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 13 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2023-12-16 16:24:16,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:24:16,103 INFO L225 Difference]: With dead ends: 76 [2023-12-16 16:24:16,103 INFO L226 Difference]: Without dead ends: 56 [2023-12-16 16:24:16,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=127, Invalid=335, Unknown=0, NotChecked=0, Total=462 [2023-12-16 16:24:16,104 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 76 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 16:24:16,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 68 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 16:24:16,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-12-16 16:24:16,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 54. [2023-12-16 16:24:16,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.3018867924528301) internal successors, (69), 53 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:24:16,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 69 transitions. [2023-12-16 16:24:16,119 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 69 transitions. Word has length 46 [2023-12-16 16:24:16,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:24:16,119 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 69 transitions. [2023-12-16 16:24:16,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 13 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:24:16,119 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 69 transitions. [2023-12-16 16:24:16,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-16 16:24:16,120 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:24:16,121 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 5, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:24:16,139 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 16:24:16,326 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 16:24:16,326 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:24:16,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:24:16,327 INFO L85 PathProgramCache]: Analyzing trace with hash 339334995, now seen corresponding path program 2 times [2023-12-16 16:24:16,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:24:16,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [934705675] [2023-12-16 16:24:16,328 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 16:24:16,328 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 16:24:16,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:24:16,329 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 16:24:16,349 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 16:24:16,482 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 16:24:16,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 16:24:16,489 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 16:24:16,491 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:24:16,633 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 20 proven. 57 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-12-16 16:24:16,633 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:24:16,788 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 20 proven. 57 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-12-16 16:24:16,789 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:24:16,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [934705675] [2023-12-16 16:24:16,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [934705675] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 16:24:16,789 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 16:24:16,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-12-16 16:24:16,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635493929] [2023-12-16 16:24:16,789 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 16:24:16,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-16 16:24:16,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:24:16,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-16 16:24:16,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-12-16 16:24:16,791 INFO L87 Difference]: Start difference. First operand 54 states and 69 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:24:16,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:24:16,993 INFO L93 Difference]: Finished difference Result 78 states and 102 transitions. [2023-12-16 16:24:16,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-16 16:24:16,994 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2023-12-16 16:24:16,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:24:16,995 INFO L225 Difference]: With dead ends: 78 [2023-12-16 16:24:16,995 INFO L226 Difference]: Without dead ends: 63 [2023-12-16 16:24:16,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=109, Invalid=233, Unknown=0, NotChecked=0, Total=342 [2023-12-16 16:24:16,996 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 78 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 16:24:16,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 40 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 16:24:16,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2023-12-16 16:24:17,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2023-12-16 16:24:17,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.293103448275862) internal successors, (75), 58 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:24:17,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 75 transitions. [2023-12-16 16:24:17,010 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 75 transitions. Word has length 49 [2023-12-16 16:24:17,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:24:17,010 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 75 transitions. [2023-12-16 16:24:17,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:24:17,011 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 75 transitions. [2023-12-16 16:24:17,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-16 16:24:17,011 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:24:17,011 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:24:17,020 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 16:24:17,223 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 16:24:17,223 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:24:17,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:24:17,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1752165133, now seen corresponding path program 3 times [2023-12-16 16:24:17,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:24:17,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [564899217] [2023-12-16 16:24:17,225 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 16:24:17,225 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 16:24:17,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:24:17,239 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 16:24:17,266 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 (12)] Waiting until timeout for monitored process [2023-12-16 16:24:17,339 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-16 16:24:17,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 16:24:17,343 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-16 16:24:17,346 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:24:17,363 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 17 treesize of output 13 [2023-12-16 16:24:17,388 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2023-12-16 16:24:18,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 16:24:18,572 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-16 16:24:18,575 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 16:24:18,575 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 51 treesize of output 30 [2023-12-16 16:24:18,599 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2023-12-16 16:24:18,600 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:24:19,291 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 26 treesize of output 24 [2023-12-16 16:24:19,305 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 130 treesize of output 122 [2023-12-16 16:24:19,311 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2023-12-16 16:24:19,311 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:24:19,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [564899217] [2023-12-16 16:24:19,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [564899217] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 16:24:19,311 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 16:24:19,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-12-16 16:24:19,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998681863] [2023-12-16 16:24:19,312 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 16:24:19,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-16 16:24:19,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:24:19,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-16 16:24:19,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2023-12-16 16:24:19,313 INFO L87 Difference]: Start difference. First operand 59 states and 75 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:24:19,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:24:19,669 INFO L93 Difference]: Finished difference Result 65 states and 81 transitions. [2023-12-16 16:24:19,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-16 16:24:19,669 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-16 16:24:19,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:24:19,670 INFO L225 Difference]: With dead ends: 65 [2023-12-16 16:24:19,670 INFO L226 Difference]: Without dead ends: 63 [2023-12-16 16:24:19,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=126, Invalid=294, Unknown=0, NotChecked=0, Total=420 [2023-12-16 16:24:19,671 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 53 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 16:24:19,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 52 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 16:24:19,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2023-12-16 16:24:19,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2023-12-16 16:24:19,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.278688524590164) internal successors, (78), 61 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:24:19,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 78 transitions. [2023-12-16 16:24:19,684 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 78 transitions. Word has length 58 [2023-12-16 16:24:19,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:24:19,684 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 78 transitions. [2023-12-16 16:24:19,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:24:19,684 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 78 transitions. [2023-12-16 16:24:19,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-16 16:24:19,685 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:24:19,685 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:24:19,688 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 16:24:19,888 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 16:24:19,889 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:24:19,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:24:19,889 INFO L85 PathProgramCache]: Analyzing trace with hash -2008658791, now seen corresponding path program 4 times [2023-12-16 16:24:19,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:24:19,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2107781597] [2023-12-16 16:24:19,890 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-16 16:24:19,890 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 16:24:19,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:24:19,891 INFO L229 MonitoredProcess]: Starting monitored process 13 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 16:24:19,898 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 (13)] Waiting until timeout for monitored process [2023-12-16 16:24:20,065 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-16 16:24:20,065 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 16:24:20,071 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-16 16:24:20,073 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:24:20,260 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 0 proven. 157 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-12-16 16:24:20,260 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:24:20,516 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 0 proven. 157 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-12-16 16:24:20,517 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:24:20,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2107781597] [2023-12-16 16:24:20,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2107781597] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 16:24:20,517 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 16:24:20,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-12-16 16:24:20,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331731168] [2023-12-16 16:24:20,517 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 16:24:20,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-16 16:24:20,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:24:20,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-16 16:24:20,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2023-12-16 16:24:20,519 INFO L87 Difference]: Start difference. First operand 62 states and 78 transitions. Second operand has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 13 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:24:20,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:24:20,692 INFO L93 Difference]: Finished difference Result 82 states and 103 transitions. [2023-12-16 16:24:20,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 16:24:20,693 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 13 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-12-16 16:24:20,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:24:20,694 INFO L225 Difference]: With dead ends: 82 [2023-12-16 16:24:20,694 INFO L226 Difference]: Without dead ends: 71 [2023-12-16 16:24:20,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2023-12-16 16:24:20,695 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 71 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 16:24:20,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 119 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 16:24:20,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2023-12-16 16:24:20,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 67. [2023-12-16 16:24:20,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.2878787878787878) internal successors, (85), 66 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:24:20,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 85 transitions. [2023-12-16 16:24:20,715 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 85 transitions. Word has length 61 [2023-12-16 16:24:20,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:24:20,716 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 85 transitions. [2023-12-16 16:24:20,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 13 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:24:20,716 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 85 transitions. [2023-12-16 16:24:20,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-16 16:24:20,717 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:24:20,717 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:24:20,724 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 (13)] Forceful destruction successful, exit code 0 [2023-12-16 16:24:20,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /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 16:24:20,924 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:24:20,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:24:20,924 INFO L85 PathProgramCache]: Analyzing trace with hash -985173222, now seen corresponding path program 5 times [2023-12-16 16:24:20,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:24:20,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1789615564] [2023-12-16 16:24:20,925 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-16 16:24:20,925 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 16:24:20,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:24:20,926 INFO L229 MonitoredProcess]: Starting monitored process 14 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 16:24:20,943 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 (14)] Waiting until timeout for monitored process [2023-12-16 16:24:21,253 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2023-12-16 16:24:21,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 16:24:21,260 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-16 16:24:21,262 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:24:21,272 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 16:24:21,900 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 16:24:21,900 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 83 treesize of output 54 [2023-12-16 16:24:22,631 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 16:24:22,631 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 65 treesize of output 13 [2023-12-16 16:24:22,745 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 153 proven. 31 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-12-16 16:24:22,746 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-16 16:25:27,214 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 (14)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 16:25:27,218 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 16:25:27,340 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 16:25:27,346 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 (14)] Forceful destruction successful, exit code 0 [2023-12-16 16:25:27,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /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 16:25:27,541 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 65 with TraceHistMax 10,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 26 known predicates. [2023-12-16 16:25:27,544 INFO L445 BasicCegarLoop]: Path program histogram: [5, 3, 2, 2, 1] [2023-12-16 16:25:27,546 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 16:25:27,547 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 04:25:27 BoogieIcfgContainer [2023-12-16 16:25:27,547 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 16:25:27,547 INFO L158 Benchmark]: Toolchain (without parser) took 77559.70ms. Allocated memory was 271.6MB in the beginning and 326.1MB in the end (delta: 54.5MB). Free memory was 218.2MB in the beginning and 230.8MB in the end (delta: -12.6MB). Peak memory consumption was 43.0MB. Max. memory is 8.0GB. [2023-12-16 16:25:27,547 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 194.0MB. Free memory is still 142.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 16:25:27,548 INFO L158 Benchmark]: CACSL2BoogieTranslator took 197.31ms. Allocated memory is still 271.6MB. Free memory was 218.0MB in the beginning and 206.4MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-16 16:25:27,549 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.63ms. Allocated memory is still 271.6MB. Free memory was 206.4MB in the beginning and 204.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 16:25:27,549 INFO L158 Benchmark]: Boogie Preprocessor took 50.66ms. Allocated memory is still 271.6MB. Free memory was 204.6MB in the beginning and 202.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 16:25:27,550 INFO L158 Benchmark]: RCFGBuilder took 369.01ms. Allocated memory is still 271.6MB. Free memory was 202.5MB in the beginning and 187.3MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-16 16:25:27,550 INFO L158 Benchmark]: TraceAbstraction took 76908.96ms. Allocated memory was 271.6MB in the beginning and 326.1MB in the end (delta: 54.5MB). Free memory was 186.5MB in the beginning and 230.8MB in the end (delta: -44.3MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-16 16:25:27,553 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 194.0MB. Free memory is still 142.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 197.31ms. Allocated memory is still 271.6MB. Free memory was 218.0MB in the beginning and 206.4MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 28.63ms. Allocated memory is still 271.6MB. Free memory was 206.4MB in the beginning and 204.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 50.66ms. Allocated memory is still 271.6MB. Free memory was 204.6MB in the beginning and 202.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 369.01ms. Allocated memory is still 271.6MB. Free memory was 202.5MB in the beginning and 187.3MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 76908.96ms. Allocated memory was 271.6MB in the beginning and 326.1MB in the end (delta: 54.5MB). Free memory was 186.5MB in the beginning and 230.8MB in the end (delta: -44.3MB). Peak memory consumption was 11.5MB. 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: 16]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 16). Cancelled while NwaCegarLoop was analyzing trace of length 65 with TraceHistMax 10,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 26 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 76.8s, OverallIterations: 13, TraceHistogramMax: 10, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 582 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 582 mSDsluCounter, 652 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 491 mSDsCounter, 46 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 814 IncrementalHoareTripleChecker+Invalid, 860 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 46 mSolverCounterUnsat, 161 mSDtfsCounter, 814 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 666 GetRequests, 543 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=67occurred in iteration=12, InterpolantAutomatonStates: 101, 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, 12 MinimizatonAttempts, 58 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.4s InterpolantComputationTime, 364 NumberOfCodeBlocks, 293 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 629 ConstructedInterpolants, 83 QuantifiedInterpolants, 5438 SizeOfPredicates, 22 NumberOfNonLiveVariables, 1057 ConjunctsInSsa, 77 ConjunctsInUnsatCore, 20 InterpolantComputations, 4 PerfectInterpolantSequences, 1075/1608 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