/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/array-multidimensional/init-3-u.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 07:05:00,429 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 07:05:00,469 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-16 07:05:00,477 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 07:05:00,477 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 07:05:00,505 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 07:05:00,506 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 07:05:00,506 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 07:05:00,506 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 07:05:00,506 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 07:05:00,507 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 07:05:00,507 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 07:05:00,507 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 07:05:00,507 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 07:05:00,508 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 07:05:00,508 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 07:05:00,508 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 07:05:00,512 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 07:05:00,512 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 07:05:00,512 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 07:05:00,513 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 07:05:00,513 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 07:05:00,513 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 07:05:00,513 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 07:05:00,514 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 07:05:00,514 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 07:05:00,514 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 07:05:00,514 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 07:05:00,514 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 07:05:00,515 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 07:05:00,515 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 07:05:00,515 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 07:05:00,515 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 07:05:00,515 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 07:05:00,516 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 07:05:00,516 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 07:05:00,516 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 07:05:00,516 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 07:05:00,517 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 07:05:00,517 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 07:05:00,517 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 07:05:00,523 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 07:05:00,523 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 07:05:00,523 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 07:05:00,523 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 07:05:00,524 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 07:05:00,524 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 07:05:00,676 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 07:05:00,703 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 07:05:00,705 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 07:05:00,706 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 07:05:00,707 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 07:05:00,708 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-multidimensional/init-3-u.c [2023-12-16 07:05:01,742 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 07:05:01,883 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 07:05:01,883 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-multidimensional/init-3-u.c [2023-12-16 07:05:01,888 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d435c353f/b354f49bd8b8407ca0ec8ce6411b1395/FLAGeff157972 [2023-12-16 07:05:01,917 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d435c353f/b354f49bd8b8407ca0ec8ce6411b1395 [2023-12-16 07:05:01,919 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 07:05:01,921 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 07:05:01,924 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 07:05:01,924 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 07:05:01,928 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 07:05:01,928 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 07:05:01" (1/1) ... [2023-12-16 07:05:01,929 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25e04622 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:05:01, skipping insertion in model container [2023-12-16 07:05:01,929 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 07:05:01" (1/1) ... [2023-12-16 07:05:01,943 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 07:05:02,044 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-multidimensional/init-3-u.c[320,333] [2023-12-16 07:05:02,062 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 07:05:02,071 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 07:05:02,081 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-multidimensional/init-3-u.c[320,333] [2023-12-16 07:05:02,096 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 07:05:02,111 INFO L206 MainTranslator]: Completed translation [2023-12-16 07:05:02,111 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:05:02 WrapperNode [2023-12-16 07:05:02,111 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 07:05:02,112 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 07:05:02,113 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 07:05:02,113 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 07:05:02,118 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:05:02" (1/1) ... [2023-12-16 07:05:02,135 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:05:02" (1/1) ... [2023-12-16 07:05:02,146 INFO L138 Inliner]: procedures = 16, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 75 [2023-12-16 07:05:02,147 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 07:05:02,147 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 07:05:02,147 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 07:05:02,147 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 07:05:02,155 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:05:02" (1/1) ... [2023-12-16 07:05:02,155 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:05:02" (1/1) ... [2023-12-16 07:05:02,159 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:05:02" (1/1) ... [2023-12-16 07:05:02,176 INFO L175 MemorySlicer]: Split 4 memory accesses to 2 slices as follows [2, 2]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2023-12-16 07:05:02,177 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:05:02" (1/1) ... [2023-12-16 07:05:02,178 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:05:02" (1/1) ... [2023-12-16 07:05:02,191 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:05:02" (1/1) ... [2023-12-16 07:05:02,195 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:05:02" (1/1) ... [2023-12-16 07:05:02,196 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:05:02" (1/1) ... [2023-12-16 07:05:02,197 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:05:02" (1/1) ... [2023-12-16 07:05:02,198 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 07:05:02,199 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 07:05:02,199 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 07:05:02,199 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 07:05:02,200 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:05:02" (1/1) ... [2023-12-16 07:05:02,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 07:05:02,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 07:05:02,226 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 07:05:02,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 07:05:02,245 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 07:05:02,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 07:05:02,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-16 07:05:02,246 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-16 07:05:02,246 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-16 07:05:02,246 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-16 07:05:02,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 07:05:02,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 07:05:02,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-16 07:05:02,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-16 07:05:02,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-16 07:05:02,300 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 07:05:02,302 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 07:05:02,521 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 07:05:02,540 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 07:05:02,540 INFO L309 CfgBuilder]: Removed 6 assume(true) statements. [2023-12-16 07:05:02,540 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 07:05:02 BoogieIcfgContainer [2023-12-16 07:05:02,540 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 07:05:02,542 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 07:05:02,542 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 07:05:02,544 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 07:05:02,544 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 07:05:01" (1/3) ... [2023-12-16 07:05:02,545 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cb362cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 07:05:02, skipping insertion in model container [2023-12-16 07:05:02,545 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:05:02" (2/3) ... [2023-12-16 07:05:02,545 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cb362cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 07:05:02, skipping insertion in model container [2023-12-16 07:05:02,545 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 07:05:02" (3/3) ... [2023-12-16 07:05:02,546 INFO L112 eAbstractionObserver]: Analyzing ICFG init-3-u.c [2023-12-16 07:05:02,558 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 07:05:02,558 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 07:05:02,586 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 07:05:02,591 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@c048bb2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 07:05:02,591 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 07:05:02,594 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.875) internal successors, (30), 17 states have internal predecessors, (30), 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 07:05:02,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-16 07:05:02,599 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:05:02,600 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:05:02,600 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:05:02,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:05:02,605 INFO L85 PathProgramCache]: Analyzing trace with hash -526685124, now seen corresponding path program 1 times [2023-12-16 07:05:02,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:05:02,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1808205437] [2023-12-16 07:05:02,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:05:02,614 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:05:02,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:05:02,630 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 07:05:02,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-16 07:05:02,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:05:02,705 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 07:05:02,707 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:05:02,722 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 07:05:02,722 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 07:05:02,723 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:05:02,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1808205437] [2023-12-16 07:05:02,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1808205437] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 07:05:02,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 07:05:02,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 07:05:02,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062832239] [2023-12-16 07:05:02,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 07:05:02,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 07:05:02,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:05:02,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 07:05:02,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 07:05:02,767 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.875) internal successors, (30), 17 states have internal predecessors, (30), 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 2 states, 2 states have (on average 4.0) 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 07:05:02,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:05:02,794 INFO L93 Difference]: Finished difference Result 35 states and 59 transitions. [2023-12-16 07:05:02,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 07:05:02,797 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) 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 07:05:02,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:05:02,801 INFO L225 Difference]: With dead ends: 35 [2023-12-16 07:05:02,802 INFO L226 Difference]: Without dead ends: 16 [2023-12-16 07:05:02,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 07:05:02,807 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 07:05:02,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 07:05:02,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2023-12-16 07:05:02,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2023-12-16 07:05:02,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.4) internal successors, (21), 15 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 07:05:02,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 21 transitions. [2023-12-16 07:05:02,828 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 21 transitions. Word has length 8 [2023-12-16 07:05:02,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:05:02,828 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 21 transitions. [2023-12-16 07:05:02,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) 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 07:05:02,829 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 21 transitions. [2023-12-16 07:05:02,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-16 07:05:02,829 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:05:02,829 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:05:02,834 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 (2)] Forceful destruction successful, exit code 0 [2023-12-16 07:05:03,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:05:03,034 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:05:03,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:05:03,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1381991778, now seen corresponding path program 1 times [2023-12-16 07:05:03,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:05:03,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [986983005] [2023-12-16 07:05:03,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:05:03,035 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:05:03,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:05:03,037 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 07:05:03,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-16 07:05:03,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:05:03,088 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 07:05:03,089 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:05:03,117 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 07:05:03,117 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 07:05:03,117 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:05:03,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [986983005] [2023-12-16 07:05:03,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [986983005] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 07:05:03,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 07:05:03,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 07:05:03,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350997101] [2023-12-16 07:05:03,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 07:05:03,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 07:05:03,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:05:03,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 07:05:03,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 07:05:03,120 INFO L87 Difference]: Start difference. First operand 16 states and 21 transitions. 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 07:05:03,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:05:03,265 INFO L93 Difference]: Finished difference Result 31 states and 41 transitions. [2023-12-16 07:05:03,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 07:05:03,270 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 07:05:03,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:05:03,270 INFO L225 Difference]: With dead ends: 31 [2023-12-16 07:05:03,270 INFO L226 Difference]: Without dead ends: 21 [2023-12-16 07:05:03,271 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 07:05:03,271 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 6 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 07:05:03,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 20 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 07:05:03,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-12-16 07:05:03,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 17. [2023-12-16 07:05:03,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.375) internal successors, (22), 16 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 07:05:03,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 22 transitions. [2023-12-16 07:05:03,276 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 22 transitions. Word has length 8 [2023-12-16 07:05:03,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:05:03,278 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 22 transitions. [2023-12-16 07:05:03,278 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 07:05:03,278 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 22 transitions. [2023-12-16 07:05:03,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-16 07:05:03,279 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:05:03,279 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:05:03,285 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-16 07:05:03,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:05:03,482 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:05:03,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:05:03,482 INFO L85 PathProgramCache]: Analyzing trace with hash -236778402, now seen corresponding path program 1 times [2023-12-16 07:05:03,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:05:03,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1312418670] [2023-12-16 07:05:03,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:05:03,483 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:05:03,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:05:03,484 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 07:05:03,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-16 07:05:03,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:05:03,543 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 07:05:03,544 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:05:03,576 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 07:05:03,576 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 07:05:03,577 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:05:03,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1312418670] [2023-12-16 07:05:03,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1312418670] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 07:05:03,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 07:05:03,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 07:05:03,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249428936] [2023-12-16 07:05:03,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 07:05:03,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 07:05:03,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:05:03,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 07:05:03,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 07:05:03,578 INFO L87 Difference]: Start difference. First operand 17 states and 22 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 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 07:05:03,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:05:03,782 INFO L93 Difference]: Finished difference Result 43 states and 57 transitions. [2023-12-16 07:05:03,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 07:05:03,782 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 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 11 [2023-12-16 07:05:03,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:05:03,783 INFO L225 Difference]: With dead ends: 43 [2023-12-16 07:05:03,783 INFO L226 Difference]: Without dead ends: 28 [2023-12-16 07:05:03,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 07:05:03,784 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 29 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 07:05:03,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 13 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 07:05:03,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-12-16 07:05:03,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 19. [2023-12-16 07:05:03,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 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 07:05:03,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2023-12-16 07:05:03,790 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 11 [2023-12-16 07:05:03,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:05:03,790 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 24 transitions. [2023-12-16 07:05:03,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 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 07:05:03,790 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2023-12-16 07:05:03,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-16 07:05:03,790 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:05:03,790 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:05:03,797 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-16 07:05:03,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:05:03,995 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:05:03,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:05:03,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1385813380, now seen corresponding path program 1 times [2023-12-16 07:05:03,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:05:03,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1491264123] [2023-12-16 07:05:03,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:05:03,996 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:05:03,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:05:03,997 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 07:05:04,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-16 07:05:04,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:05:04,050 INFO L262 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 07:05:04,051 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:05:04,080 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 07:05:04,080 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 07:05:04,081 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:05:04,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1491264123] [2023-12-16 07:05:04,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1491264123] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 07:05:04,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 07:05:04,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 07:05:04,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3403916] [2023-12-16 07:05:04,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 07:05:04,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 07:05:04,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:05:04,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 07:05:04,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 07:05:04,082 INFO L87 Difference]: Start difference. First operand 19 states and 24 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 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 07:05:04,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:05:04,236 INFO L93 Difference]: Finished difference Result 43 states and 55 transitions. [2023-12-16 07:05:04,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 07:05:04,236 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 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 14 [2023-12-16 07:05:04,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:05:04,237 INFO L225 Difference]: With dead ends: 43 [2023-12-16 07:05:04,237 INFO L226 Difference]: Without dead ends: 26 [2023-12-16 07:05:04,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 07:05:04,238 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 30 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 07:05:04,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 15 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 07:05:04,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-12-16 07:05:04,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 21. [2023-12-16 07:05:04,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.3) internal successors, (26), 20 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 07:05:04,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2023-12-16 07:05:04,243 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 14 [2023-12-16 07:05:04,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:05:04,243 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 26 transitions. [2023-12-16 07:05:04,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 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 07:05:04,243 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2023-12-16 07:05:04,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-16 07:05:04,244 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:05:04,244 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:05:04,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-16 07:05:04,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:05:04,447 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:05:04,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:05:04,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1868918897, now seen corresponding path program 1 times [2023-12-16 07:05:04,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:05:04,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1329583991] [2023-12-16 07:05:04,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:05:04,448 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:05:04,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:05:04,449 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 07:05:04,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-16 07:05:04,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:05:04,493 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 07:05:04,494 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:05:04,548 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 07:05:04,548 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 07:05:04,597 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 07:05:04,598 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:05:04,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1329583991] [2023-12-16 07:05:04,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1329583991] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 07:05:04,598 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 07:05:04,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-12-16 07:05:04,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797142540] [2023-12-16 07:05:04,598 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 07:05:04,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 07:05:04,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:05:04,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 07:05:04,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 07:05:04,600 INFO L87 Difference]: Start difference. First operand 21 states and 26 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 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 07:05:04,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:05:04,939 INFO L93 Difference]: Finished difference Result 59 states and 75 transitions. [2023-12-16 07:05:04,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 07:05:04,939 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 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 07:05:04,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:05:04,940 INFO L225 Difference]: With dead ends: 59 [2023-12-16 07:05:04,940 INFO L226 Difference]: Without dead ends: 40 [2023-12-16 07:05:04,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 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 07:05:04,941 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 84 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 07:05:04,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 32 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 07:05:04,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-12-16 07:05:04,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 33. [2023-12-16 07:05:04,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.28125) internal successors, (41), 32 states have internal predecessors, (41), 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 07:05:04,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2023-12-16 07:05:04,946 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 15 [2023-12-16 07:05:04,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:05:04,947 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2023-12-16 07:05:04,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 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 07:05:04,947 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2023-12-16 07:05:04,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-16 07:05:04,947 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:05:04,947 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:05:04,952 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 07:05:05,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:05:05,150 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:05:05,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:05:05,151 INFO L85 PathProgramCache]: Analyzing trace with hash 165697340, now seen corresponding path program 2 times [2023-12-16 07:05:05,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:05:05,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1959797605] [2023-12-16 07:05:05,151 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 07:05:05,151 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:05:05,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:05:05,152 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 07:05:05,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-16 07:05:05,232 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 07:05:05,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 07:05:05,236 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-16 07:05:05,237 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:05:05,316 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 07:05:05,316 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 07:05:05,470 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 07:05:05,471 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:05:05,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1959797605] [2023-12-16 07:05:05,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1959797605] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 07:05:05,471 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 07:05:05,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-12-16 07:05:05,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305407330] [2023-12-16 07:05:05,471 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 07:05:05,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-16 07:05:05,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:05:05,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-16 07:05:05,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2023-12-16 07:05:05,472 INFO L87 Difference]: Start difference. First operand 33 states and 41 transitions. Second operand has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 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 07:05:06,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:05:06,408 INFO L93 Difference]: Finished difference Result 107 states and 132 transitions. [2023-12-16 07:05:06,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-16 07:05:06,408 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 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 18 [2023-12-16 07:05:06,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:05:06,409 INFO L225 Difference]: With dead ends: 107 [2023-12-16 07:05:06,409 INFO L226 Difference]: Without dead ends: 76 [2023-12-16 07:05:06,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=131, Invalid=211, Unknown=0, NotChecked=0, Total=342 [2023-12-16 07:05:06,410 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 267 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 07:05:06,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 112 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 07:05:06,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-12-16 07:05:06,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 57. [2023-12-16 07:05:06,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.2678571428571428) internal successors, (71), 56 states have internal predecessors, (71), 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 07:05:06,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 71 transitions. [2023-12-16 07:05:06,417 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 71 transitions. Word has length 18 [2023-12-16 07:05:06,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:05:06,418 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 71 transitions. [2023-12-16 07:05:06,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 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 07:05:06,418 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 71 transitions. [2023-12-16 07:05:06,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-16 07:05:06,418 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:05:06,418 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:05:06,438 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-16 07:05:06,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:05:06,622 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:05:06,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:05:06,623 INFO L85 PathProgramCache]: Analyzing trace with hash 308962908, now seen corresponding path program 3 times [2023-12-16 07:05:06,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:05:06,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2123096110] [2023-12-16 07:05:06,623 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 07:05:06,623 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:05:06,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:05:06,624 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 07:05:06,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-16 07:05:06,699 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-16 07:05:06,700 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 07:05:06,703 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 07:05:06,704 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:05:06,782 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-16 07:05:06,782 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 07:05:06,841 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-16 07:05:06,841 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:05:06,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2123096110] [2023-12-16 07:05:06,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2123096110] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 07:05:06,841 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 07:05:06,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-12-16 07:05:06,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312955757] [2023-12-16 07:05:06,842 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 07:05:06,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 07:05:06,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:05:06,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 07:05:06,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-16 07:05:06,843 INFO L87 Difference]: Start difference. First operand 57 states and 71 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 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 07:05:07,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:05:07,101 INFO L93 Difference]: Finished difference Result 144 states and 178 transitions. [2023-12-16 07:05:07,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 07:05:07,102 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 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 24 [2023-12-16 07:05:07,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:05:07,103 INFO L225 Difference]: With dead ends: 144 [2023-12-16 07:05:07,103 INFO L226 Difference]: Without dead ends: 105 [2023-12-16 07:05:07,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 42 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 07:05:07,104 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 27 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 07:05:07,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 28 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 07:05:07,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2023-12-16 07:05:07,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2023-12-16 07:05:07,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 1.2019230769230769) internal successors, (125), 104 states have internal predecessors, (125), 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 07:05:07,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 125 transitions. [2023-12-16 07:05:07,128 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 125 transitions. Word has length 24 [2023-12-16 07:05:07,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:05:07,128 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 125 transitions. [2023-12-16 07:05:07,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 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 07:05:07,129 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 125 transitions. [2023-12-16 07:05:07,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-16 07:05:07,130 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:05:07,130 INFO L195 NwaCegarLoop]: trace histogram [40, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:05:07,135 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-16 07:05:07,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:05:07,338 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:05:07,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:05:07,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1238679958, now seen corresponding path program 4 times [2023-12-16 07:05:07,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:05:07,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [563180024] [2023-12-16 07:05:07,339 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-16 07:05:07,339 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:05:07,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:05:07,340 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 07:05:07,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-16 07:05:07,506 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-16 07:05:07,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 07:05:07,519 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-16 07:05:07,522 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:05:07,676 INFO L134 CoverageAnalysis]: Checked inductivity of 996 backedges. 374 proven. 55 refuted. 0 times theorem prover too weak. 567 trivial. 0 not checked. [2023-12-16 07:05:07,676 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 07:05:08,130 INFO L134 CoverageAnalysis]: Checked inductivity of 996 backedges. 374 proven. 55 refuted. 0 times theorem prover too weak. 567 trivial. 0 not checked. [2023-12-16 07:05:08,130 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:05:08,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [563180024] [2023-12-16 07:05:08,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [563180024] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 07:05:08,130 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 07:05:08,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-16 07:05:08,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618169276] [2023-12-16 07:05:08,130 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 07:05:08,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-16 07:05:08,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:05:08,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-16 07:05:08,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2023-12-16 07:05:08,132 INFO L87 Difference]: Start difference. First operand 105 states and 125 transitions. Second operand has 26 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 25 states have internal predecessors, (42), 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 07:05:10,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:05:10,909 INFO L93 Difference]: Finished difference Result 334 states and 425 transitions. [2023-12-16 07:05:10,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-16 07:05:10,910 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 25 states have internal predecessors, (42), 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 72 [2023-12-16 07:05:10,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:05:10,911 INFO L225 Difference]: With dead ends: 334 [2023-12-16 07:05:10,911 INFO L226 Difference]: Without dead ends: 232 [2023-12-16 07:05:10,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=479, Invalid=853, Unknown=0, NotChecked=0, Total=1332 [2023-12-16 07:05:10,912 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 785 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-16 07:05:10,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [785 Valid, 450 Invalid, 701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-16 07:05:10,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2023-12-16 07:05:10,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 189. [2023-12-16 07:05:10,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 1.175531914893617) internal successors, (221), 188 states have internal predecessors, (221), 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 07:05:10,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 221 transitions. [2023-12-16 07:05:10,937 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 221 transitions. Word has length 72 [2023-12-16 07:05:10,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:05:10,937 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 221 transitions. [2023-12-16 07:05:10,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 25 states have internal predecessors, (42), 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 07:05:10,937 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 221 transitions. [2023-12-16 07:05:10,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-16 07:05:10,938 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:05:10,938 INFO L195 NwaCegarLoop]: trace histogram [88, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:05:10,958 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-16 07:05:11,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:05:11,139 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:05:11,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:05:11,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1950888810, now seen corresponding path program 5 times [2023-12-16 07:05:11,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:05:11,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1932855994] [2023-12-16 07:05:11,140 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-16 07:05:11,140 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:05:11,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:05:11,141 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 07:05:11,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-16 07:05:11,736 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2023-12-16 07:05:11,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 07:05:11,750 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-16 07:05:11,754 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:05:12,365 INFO L134 CoverageAnalysis]: Checked inductivity of 4236 backedges. 2679 proven. 254 refuted. 0 times theorem prover too weak. 1303 trivial. 0 not checked. [2023-12-16 07:05:12,366 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 07:05:14,479 INFO L134 CoverageAnalysis]: Checked inductivity of 4236 backedges. 2679 proven. 254 refuted. 0 times theorem prover too weak. 1303 trivial. 0 not checked. [2023-12-16 07:05:14,480 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:05:14,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1932855994] [2023-12-16 07:05:14,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1932855994] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 07:05:14,480 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 07:05:14,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 54 [2023-12-16 07:05:14,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658414764] [2023-12-16 07:05:14,480 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 07:05:14,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2023-12-16 07:05:14,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:05:14,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2023-12-16 07:05:14,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=679, Invalid=2183, Unknown=0, NotChecked=0, Total=2862 [2023-12-16 07:05:14,482 INFO L87 Difference]: Start difference. First operand 189 states and 221 transitions. Second operand has 54 states, 54 states have (on average 1.4074074074074074) internal successors, (76), 54 states have internal predecessors, (76), 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 07:05:56,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:05:56,985 INFO L93 Difference]: Finished difference Result 957 states and 1059 transitions. [2023-12-16 07:05:56,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2023-12-16 07:05:56,986 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.4074074074074074) internal successors, (76), 54 states have internal predecessors, (76), 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 120 [2023-12-16 07:05:56,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:05:56,988 INFO L225 Difference]: With dead ends: 957 [2023-12-16 07:05:56,988 INFO L226 Difference]: Without dead ends: 796 [2023-12-16 07:05:56,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6345 ImplicationChecksByTransitivity, 32.1s TimeCoverageRelationStatistics Valid=4780, Invalid=14126, Unknown=0, NotChecked=0, Total=18906 [2023-12-16 07:05:56,997 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 2034 mSDsluCounter, 2033 mSDsCounter, 0 mSdLazyCounter, 2684 mSolverCounterSat, 509 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2034 SdHoareTripleChecker+Valid, 2091 SdHoareTripleChecker+Invalid, 3193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 509 IncrementalHoareTripleChecker+Valid, 2684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.4s IncrementalHoareTripleChecker+Time [2023-12-16 07:05:56,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2034 Valid, 2091 Invalid, 3193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [509 Valid, 2684 Invalid, 0 Unknown, 0 Unchecked, 12.4s Time] [2023-12-16 07:05:56,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2023-12-16 07:05:57,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 627. [2023-12-16 07:05:57,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 627 states, 626 states have (on average 1.145367412140575) internal successors, (717), 626 states have internal predecessors, (717), 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 07:05:57,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 717 transitions. [2023-12-16 07:05:57,073 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 717 transitions. Word has length 120 [2023-12-16 07:05:57,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:05:57,074 INFO L495 AbstractCegarLoop]: Abstraction has 627 states and 717 transitions. [2023-12-16 07:05:57,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 1.4074074074074074) internal successors, (76), 54 states have internal predecessors, (76), 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 07:05:57,074 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 717 transitions. [2023-12-16 07:05:57,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2023-12-16 07:05:57,080 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:05:57,080 INFO L195 NwaCegarLoop]: trace histogram [268, 12, 12, 12, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:05:57,090 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-16 07:05:57,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:05:57,288 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:05:57,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:05:57,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1924240802, now seen corresponding path program 6 times [2023-12-16 07:05:57,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:05:57,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [651140392] [2023-12-16 07:05:57,290 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-16 07:05:57,290 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:05:57,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:05:57,291 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 07:05:57,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-16 07:05:59,639 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 26 check-sat command(s) [2023-12-16 07:05:59,639 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 07:05:59,670 INFO L262 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-16 07:05:59,675 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:06:00,157 INFO L134 CoverageAnalysis]: Checked inductivity of 39262 backedges. 19255 proven. 276 refuted. 0 times theorem prover too weak. 19731 trivial. 0 not checked. [2023-12-16 07:06:00,157 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 07:06:02,044 INFO L134 CoverageAnalysis]: Checked inductivity of 39262 backedges. 17575 proven. 1956 refuted. 0 times theorem prover too weak. 19731 trivial. 0 not checked. [2023-12-16 07:06:02,044 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:06:02,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [651140392] [2023-12-16 07:06:02,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [651140392] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 07:06:02,045 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 07:06:02,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 51 [2023-12-16 07:06:02,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199724500] [2023-12-16 07:06:02,045 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 07:06:02,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-12-16 07:06:02,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:06:02,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-12-16 07:06:02,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=726, Invalid=1926, Unknown=0, NotChecked=0, Total=2652 [2023-12-16 07:06:02,047 INFO L87 Difference]: Start difference. First operand 627 states and 717 transitions. Second operand has 52 states, 52 states have (on average 1.5384615384615385) internal successors, (80), 51 states have internal predecessors, (80), 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 07:06:14,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:06:14,238 INFO L93 Difference]: Finished difference Result 1689 states and 2233 transitions. [2023-12-16 07:06:14,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-12-16 07:06:14,239 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.5384615384615385) internal successors, (80), 51 states have internal predecessors, (80), 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 324 [2023-12-16 07:06:14,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:06:14,242 INFO L225 Difference]: With dead ends: 1689 [2023-12-16 07:06:14,242 INFO L226 Difference]: Without dead ends: 1088 [2023-12-16 07:06:14,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 670 GetRequests, 596 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 900 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=1974, Invalid=3726, Unknown=0, NotChecked=0, Total=5700 [2023-12-16 07:06:14,244 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 2650 mSDsluCounter, 1825 mSDsCounter, 0 mSdLazyCounter, 2074 mSolverCounterSat, 692 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2650 SdHoareTripleChecker+Valid, 1902 SdHoareTripleChecker+Invalid, 2766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 692 IncrementalHoareTripleChecker+Valid, 2074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-12-16 07:06:14,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2650 Valid, 1902 Invalid, 2766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [692 Valid, 2074 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2023-12-16 07:06:14,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1088 states. [2023-12-16 07:06:14,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1088 to 926. [2023-12-16 07:06:14,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 926 states, 925 states have (on average 1.1254054054054055) internal successors, (1041), 925 states have internal predecessors, (1041), 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 07:06:14,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1041 transitions. [2023-12-16 07:06:14,349 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1041 transitions. Word has length 324 [2023-12-16 07:06:14,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:06:14,349 INFO L495 AbstractCegarLoop]: Abstraction has 926 states and 1041 transitions. [2023-12-16 07:06:14,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.5384615384615385) internal successors, (80), 51 states have internal predecessors, (80), 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 07:06:14,349 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1041 transitions. [2023-12-16 07:06:14,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 633 [2023-12-16 07:06:14,357 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:06:14,357 INFO L195 NwaCegarLoop]: trace histogram [576, 12, 12, 12, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:06:14,375 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-16 07:06:14,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:06:14,572 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:06:14,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:06:14,573 INFO L85 PathProgramCache]: Analyzing trace with hash 2120911638, now seen corresponding path program 7 times [2023-12-16 07:06:14,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:06:14,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [494842983] [2023-12-16 07:06:14,575 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-16 07:06:14,575 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:06:14,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:06:14,576 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 07:06:14,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-16 07:06:16,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:06:16,231 INFO L262 TraceCheckSpWp]: Trace formula consists of 2987 conjuncts, 51 conjunts are in the unsatisfiable core [2023-12-16 07:06:16,244 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:06:17,811 INFO L134 CoverageAnalysis]: Checked inductivity of 172780 backedges. 26430 proven. 1176 refuted. 0 times theorem prover too weak. 145174 trivial. 0 not checked. [2023-12-16 07:06:17,812 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-16 07:06:17,962 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 07:06:17,992 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 07:06:17,997 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 07:06:18,017 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-16 07:06:18,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:06:18,163 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 633 with TraceHistMax 576,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 55 known predicates. [2023-12-16 07:06:18,167 INFO L445 BasicCegarLoop]: Path program histogram: [7, 1, 1, 1, 1] [2023-12-16 07:06:18,168 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 07:06:18,170 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 07:06:18 BoogieIcfgContainer [2023-12-16 07:06:18,170 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 07:06:18,170 INFO L158 Benchmark]: Toolchain (without parser) took 76248.96ms. Allocated memory is still 253.8MB. Free memory was 199.3MB in the beginning and 196.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-16 07:06:18,170 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 210.8MB. Free memory is still 157.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 07:06:18,170 INFO L158 Benchmark]: CACSL2BoogieTranslator took 187.12ms. Allocated memory is still 253.8MB. Free memory was 198.8MB in the beginning and 187.2MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-16 07:06:18,170 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.21ms. Allocated memory is still 253.8MB. Free memory was 187.2MB in the beginning and 185.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 07:06:18,171 INFO L158 Benchmark]: Boogie Preprocessor took 51.41ms. Allocated memory is still 253.8MB. Free memory was 185.7MB in the beginning and 183.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 07:06:18,171 INFO L158 Benchmark]: RCFGBuilder took 341.21ms. Allocated memory is still 253.8MB. Free memory was 183.6MB in the beginning and 169.4MB in the end (delta: 14.2MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-16 07:06:18,171 INFO L158 Benchmark]: TraceAbstraction took 75627.97ms. Allocated memory is still 253.8MB. Free memory was 168.9MB in the beginning and 196.2MB in the end (delta: -27.3MB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 07:06:18,172 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 210.8MB. Free memory is still 157.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 187.12ms. Allocated memory is still 253.8MB. Free memory was 198.8MB in the beginning and 187.2MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 34.21ms. Allocated memory is still 253.8MB. Free memory was 187.2MB in the beginning and 185.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 51.41ms. Allocated memory is still 253.8MB. Free memory was 185.7MB in the beginning and 183.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 341.21ms. Allocated memory is still 253.8MB. Free memory was 183.6MB in the beginning and 169.4MB in the end (delta: 14.2MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 75627.97ms. Allocated memory is still 253.8MB. Free memory was 168.9MB in the beginning and 196.2MB in the end (delta: -27.3MB). There was no memory consumed. 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: 7]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 7). Cancelled while NwaCegarLoop was analyzing trace of length 633 with TraceHistMax 576,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 55 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 75.6s, OverallIterations: 11, TraceHistogramMax: 576, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 59.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5912 SdHoareTripleChecker+Valid, 22.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5912 mSDsluCounter, 4684 SdHoareTripleChecker+Invalid, 20.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4420 mSDsCounter, 1492 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5625 IncrementalHoareTripleChecker+Invalid, 7117 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1492 mSolverCounterUnsat, 264 mSDtfsCounter, 5625 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1320 GetRequests, 1040 SyntacticMatches, 0 SemanticMatches, 280 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7497 ImplicationChecksByTransitivity, 41.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=926occurred in iteration=10, InterpolantAutomatonStates: 210, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 10 MinimizatonAttempts, 418 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 3.0s SatisfiabilityAnalysisTime, 6.4s InterpolantComputationTime, 614 NumberOfCodeBlocks, 307 NumberOfCodeBlocksAsserted, 49 NumberOfCheckSat, 1171 ConstructedInterpolants, 0 QuantifiedInterpolants, 2683 SizeOfPredicates, 4 NumberOfNonLiveVariables, 1308 ConjunctsInSsa, 93 ConjunctsInUnsatCore, 16 InterpolantComputations, 4 PerfectInterpolantSequences, 86261/89135 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