/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-tiling/mlceu.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 17:39:15,118 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 17:39:15,180 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-21 17:39:15,184 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 17:39:15,184 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 17:39:15,204 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 17:39:15,204 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 17:39:15,205 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 17:39:15,205 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 17:39:15,208 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 17:39:15,208 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 17:39:15,208 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 17:39:15,209 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 17:39:15,209 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 17:39:15,210 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 17:39:15,210 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 17:39:15,210 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 17:39:15,210 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 17:39:15,210 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 17:39:15,210 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 17:39:15,211 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 17:39:15,211 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 17:39:15,211 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 17:39:15,211 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-21 17:39:15,211 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-21 17:39:15,211 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 17:39:15,211 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-21 17:39:15,212 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 17:39:15,212 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 17:39:15,212 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 17:39:15,213 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 17:39:15,213 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 17:39:15,213 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 17:39:15,213 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 17:39:15,213 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 17:39:15,213 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 17:39:15,213 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 17:39:15,213 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 17:39:15,213 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-21 17:39:15,214 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-21 17:39:15,214 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 17:39:15,214 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 17:39:15,214 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 17:39:15,214 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 17:39:15,214 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 17:39:15,214 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-21 17:39:15,214 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-21 17:39:15,395 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 17:39:15,410 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 17:39:15,412 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 17:39:15,412 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 17:39:15,413 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 17:39:15,413 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/mlceu.c [2023-12-21 17:39:16,429 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 17:39:16,570 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 17:39:16,570 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/mlceu.c [2023-12-21 17:39:16,575 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d61c5f767/bd83fd358b5b4aeba548d4b6bcaca1bf/FLAGc8ef82346 [2023-12-21 17:39:16,588 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d61c5f767/bd83fd358b5b4aeba548d4b6bcaca1bf [2023-12-21 17:39:16,590 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 17:39:16,591 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 17:39:16,593 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 17:39:16,593 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 17:39:16,596 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 17:39:16,597 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 05:39:16" (1/1) ... [2023-12-21 17:39:16,597 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43d0378 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:39:16, skipping insertion in model container [2023-12-21 17:39:16,597 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 05:39:16" (1/1) ... [2023-12-21 17:39:16,613 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 17:39:16,725 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-tiling/mlceu.c[396,409] [2023-12-21 17:39:16,734 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 17:39:16,741 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 17:39:16,750 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-tiling/mlceu.c[396,409] [2023-12-21 17:39:16,754 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 17:39:16,763 INFO L206 MainTranslator]: Completed translation [2023-12-21 17:39:16,763 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:39:16 WrapperNode [2023-12-21 17:39:16,763 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 17:39:16,764 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 17:39:16,764 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 17:39:16,764 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 17:39:16,768 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:39:16" (1/1) ... [2023-12-21 17:39:16,773 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:39:16" (1/1) ... [2023-12-21 17:39:16,784 INFO L138 Inliner]: procedures = 18, calls = 21, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 61 [2023-12-21 17:39:16,784 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 17:39:16,784 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 17:39:16,785 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 17:39:16,785 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 17:39:16,792 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:39:16" (1/1) ... [2023-12-21 17:39:16,792 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:39:16" (1/1) ... [2023-12-21 17:39:16,794 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:39:16" (1/1) ... [2023-12-21 17:39:16,801 INFO L175 MemorySlicer]: Split 13 memory accesses to 3 slices as follows [2, 8, 3]. 62 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8, 0]. The 2 writes are split as follows [0, 0, 2]. [2023-12-21 17:39:16,802 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:39:16" (1/1) ... [2023-12-21 17:39:16,802 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:39:16" (1/1) ... [2023-12-21 17:39:16,806 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:39:16" (1/1) ... [2023-12-21 17:39:16,809 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:39:16" (1/1) ... [2023-12-21 17:39:16,810 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:39:16" (1/1) ... [2023-12-21 17:39:16,810 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:39:16" (1/1) ... [2023-12-21 17:39:16,812 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 17:39:16,812 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 17:39:16,812 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 17:39:16,812 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 17:39:16,813 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:39:16" (1/1) ... [2023-12-21 17:39:16,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 17:39:16,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 17:39:16,834 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) [2023-12-21 17:39:16,835 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 [2023-12-21 17:39:16,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 17:39:16,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-21 17:39:16,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-21 17:39:16,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-12-21 17:39:16,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-21 17:39:16,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-21 17:39:16,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-21 17:39:16,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-12-21 17:39:16,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 17:39:16,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 17:39:16,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-21 17:39:16,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-21 17:39:16,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-12-21 17:39:16,913 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 17:39:16,914 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 17:39:17,042 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 17:39:17,065 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 17:39:17,066 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-21 17:39:17,066 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 05:39:17 BoogieIcfgContainer [2023-12-21 17:39:17,066 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 17:39:17,067 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 17:39:17,068 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 17:39:17,070 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 17:39:17,070 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 05:39:16" (1/3) ... [2023-12-21 17:39:17,070 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@486e4a87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 05:39:17, skipping insertion in model container [2023-12-21 17:39:17,070 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:39:16" (2/3) ... [2023-12-21 17:39:17,070 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@486e4a87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 05:39:17, skipping insertion in model container [2023-12-21 17:39:17,071 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 05:39:17" (3/3) ... [2023-12-21 17:39:17,071 INFO L112 eAbstractionObserver]: Analyzing ICFG mlceu.c [2023-12-21 17:39:17,082 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 17:39:17,082 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 17:39:17,110 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 17:39:17,115 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;@75ea7ea0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 17:39:17,115 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 17:39:17,117 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 15 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:39:17,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-21 17:39:17,121 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:39:17,121 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:39:17,122 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:39:17,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:39:17,125 INFO L85 PathProgramCache]: Analyzing trace with hash -569365392, now seen corresponding path program 1 times [2023-12-21 17:39:17,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:39:17,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1224022091] [2023-12-21 17:39:17,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 17:39:17,133 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 [2023-12-21 17:39:17,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:39:17,135 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) [2023-12-21 17:39:17,146 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 [2023-12-21 17:39:17,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 17:39:17,195 INFO L262 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-21 17:39:17,197 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:39:17,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:39:17,208 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 17:39:17,208 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:39:17,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1224022091] [2023-12-21 17:39:17,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1224022091] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 17:39:17,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 17:39:17,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 17:39:17,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179052524] [2023-12-21 17:39:17,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 17:39:17,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 17:39:17,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:39:17,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 17:39:17,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 17:39:17,240 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 15 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:39:17,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:39:17,262 INFO L93 Difference]: Finished difference Result 29 states and 41 transitions. [2023-12-21 17:39:17,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 17:39:17,264 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-12-21 17:39:17,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:39:17,269 INFO L225 Difference]: With dead ends: 29 [2023-12-21 17:39:17,269 INFO L226 Difference]: Without dead ends: 13 [2023-12-21 17:39:17,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 17:39:17,275 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 17:39:17,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 17:39:17,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2023-12-21 17:39:17,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2023-12-21 17:39:17,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 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) [2023-12-21 17:39:17,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2023-12-21 17:39:17,295 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 9 [2023-12-21 17:39:17,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:39:17,296 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2023-12-21 17:39:17,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:39:17,296 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2023-12-21 17:39:17,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-21 17:39:17,297 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:39:17,297 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:39:17,301 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-21 17:39:17,499 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 [2023-12-21 17:39:17,500 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:39:17,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:39:17,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1205641970, now seen corresponding path program 1 times [2023-12-21 17:39:17,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:39:17,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [229204956] [2023-12-21 17:39:17,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 17:39:17,501 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 [2023-12-21 17:39:17,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:39:17,503 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) [2023-12-21 17:39:17,507 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 [2023-12-21 17:39:17,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 17:39:17,544 INFO L262 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 17:39:17,545 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:39:17,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:39:17,683 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 17:39:17,683 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:39:17,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [229204956] [2023-12-21 17:39:17,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [229204956] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 17:39:17,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 17:39:17,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 17:39:17,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796437768] [2023-12-21 17:39:17,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 17:39:17,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 17:39:17,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:39:17,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 17:39:17,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 17:39:17,690 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:39:17,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:39:17,758 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2023-12-21 17:39:17,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 17:39:17,759 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-12-21 17:39:17,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:39:17,772 INFO L225 Difference]: With dead ends: 30 [2023-12-21 17:39:17,772 INFO L226 Difference]: Without dead ends: 21 [2023-12-21 17:39:17,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-21 17:39:17,775 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 19 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 17:39:17,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 14 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 17:39:17,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-12-21 17:39:17,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 15. [2023-12-21 17:39:17,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 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) [2023-12-21 17:39:17,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2023-12-21 17:39:17,782 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 9 [2023-12-21 17:39:17,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:39:17,783 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2023-12-21 17:39:17,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:39:17,783 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2023-12-21 17:39:17,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-21 17:39:17,784 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:39:17,784 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:39:17,789 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 [2023-12-21 17:39:17,986 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 [2023-12-21 17:39:17,987 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:39:17,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:39:17,987 INFO L85 PathProgramCache]: Analyzing trace with hash 557936914, now seen corresponding path program 1 times [2023-12-21 17:39:17,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:39:17,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2028210582] [2023-12-21 17:39:17,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 17:39:17,988 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 [2023-12-21 17:39:17,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:39:17,989 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) [2023-12-21 17:39:17,993 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 [2023-12-21 17:39:18,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 17:39:18,026 INFO L262 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 17:39:18,028 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:39:18,051 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-21 17:39:18,088 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:39:18,088 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:39:18,138 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2023-12-21 17:39:18,142 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2023-12-21 17:39:18,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:39:18,158 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:39:18,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2028210582] [2023-12-21 17:39:18,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2028210582] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:39:18,160 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:39:18,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2023-12-21 17:39:18,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161361803] [2023-12-21 17:39:18,161 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:39:18,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 17:39:18,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:39:18,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 17:39:18,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-21 17:39:18,163 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 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) [2023-12-21 17:39:18,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:39:18,296 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2023-12-21 17:39:18,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 17:39:18,300 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-12-21 17:39:18,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:39:18,301 INFO L225 Difference]: With dead ends: 36 [2023-12-21 17:39:18,301 INFO L226 Difference]: Without dead ends: 34 [2023-12-21 17:39:18,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2023-12-21 17:39:18,302 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 28 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 17:39:18,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 47 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 17:39:18,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-12-21 17:39:18,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 21. [2023-12-21 17:39:18,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:39:18,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2023-12-21 17:39:18,305 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 12 [2023-12-21 17:39:18,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:39:18,306 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2023-12-21 17:39:18,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 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) [2023-12-21 17:39:18,306 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2023-12-21 17:39:18,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-21 17:39:18,306 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:39:18,306 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:39:18,314 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 [2023-12-21 17:39:18,509 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 [2023-12-21 17:39:18,510 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:39:18,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:39:18,510 INFO L85 PathProgramCache]: Analyzing trace with hash -19725265, now seen corresponding path program 1 times [2023-12-21 17:39:18,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:39:18,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1241988714] [2023-12-21 17:39:18,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 17:39:18,511 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 17:39:18,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:39:18,517 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) [2023-12-21 17:39:18,518 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 [2023-12-21 17:39:18,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 17:39:18,551 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-21 17:39:18,552 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:39:18,696 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:39:18,696 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:39:18,793 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:39:18,793 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:39:18,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1241988714] [2023-12-21 17:39:18,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1241988714] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:39:18,794 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:39:18,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 14 [2023-12-21 17:39:18,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082382871] [2023-12-21 17:39:18,794 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:39:18,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-21 17:39:18,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:39:18,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-21 17:39:18,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2023-12-21 17:39:18,795 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 14 states have internal predecessors, (27), 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) [2023-12-21 17:39:18,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:39:18,950 INFO L93 Difference]: Finished difference Result 49 states and 57 transitions. [2023-12-21 17:39:18,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 17:39:18,951 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 14 states have internal predecessors, (27), 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 [2023-12-21 17:39:18,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:39:18,951 INFO L225 Difference]: With dead ends: 49 [2023-12-21 17:39:18,952 INFO L226 Difference]: Without dead ends: 35 [2023-12-21 17:39:18,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2023-12-21 17:39:18,952 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 39 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 17:39:18,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 43 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 17:39:18,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-12-21 17:39:18,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 24. [2023-12-21 17:39:18,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 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) [2023-12-21 17:39:18,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2023-12-21 17:39:18,958 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 15 [2023-12-21 17:39:18,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:39:18,958 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2023-12-21 17:39:18,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 14 states have internal predecessors, (27), 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) [2023-12-21 17:39:18,958 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2023-12-21 17:39:18,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-21 17:39:18,959 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:39:18,959 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:39:18,964 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 [2023-12-21 17:39:19,161 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 [2023-12-21 17:39:19,162 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:39:19,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:39:19,162 INFO L85 PathProgramCache]: Analyzing trace with hash 497859151, now seen corresponding path program 2 times [2023-12-21 17:39:19,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:39:19,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [844455956] [2023-12-21 17:39:19,163 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 17:39:19,163 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 [2023-12-21 17:39:19,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:39:19,165 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) [2023-12-21 17:39:19,175 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 [2023-12-21 17:39:19,204 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 17:39:19,204 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:39:19,205 INFO L262 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-21 17:39:19,207 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:39:19,225 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-21 17:39:19,280 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:39:19,280 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:39:19,337 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2023-12-21 17:39:19,339 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-12-21 17:39:19,368 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:39:19,368 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:39:19,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [844455956] [2023-12-21 17:39:19,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [844455956] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:39:19,368 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:39:19,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2023-12-21 17:39:19,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468005391] [2023-12-21 17:39:19,369 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:39:19,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 17:39:19,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:39:19,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 17:39:19,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-12-21 17:39:19,370 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 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) [2023-12-21 17:39:19,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:39:19,567 INFO L93 Difference]: Finished difference Result 47 states and 51 transitions. [2023-12-21 17:39:19,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-21 17:39:19,567 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 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) Word has length 18 [2023-12-21 17:39:19,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:39:19,568 INFO L225 Difference]: With dead ends: 47 [2023-12-21 17:39:19,568 INFO L226 Difference]: Without dead ends: 45 [2023-12-21 17:39:19,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2023-12-21 17:39:19,568 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 28 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 17:39:19,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 70 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 17:39:19,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-12-21 17:39:19,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 27. [2023-12-21 17:39:19,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 26 states have internal predecessors, (31), 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) [2023-12-21 17:39:19,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2023-12-21 17:39:19,573 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 18 [2023-12-21 17:39:19,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:39:19,573 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2023-12-21 17:39:19,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 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) [2023-12-21 17:39:19,573 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2023-12-21 17:39:19,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-21 17:39:19,573 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:39:19,573 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:39:19,582 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-21 17:39:19,775 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 [2023-12-21 17:39:19,776 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:39:19,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:39:19,777 INFO L85 PathProgramCache]: Analyzing trace with hash 807251600, now seen corresponding path program 1 times [2023-12-21 17:39:19,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:39:19,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [177629915] [2023-12-21 17:39:19,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 17:39:19,777 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 [2023-12-21 17:39:19,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:39:19,778 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) [2023-12-21 17:39:19,779 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 [2023-12-21 17:39:19,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 17:39:19,815 INFO L262 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 17:39:19,816 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:39:19,833 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:39:19,833 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:39:19,865 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:39:19,865 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:39:19,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [177629915] [2023-12-21 17:39:19,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [177629915] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:39:19,865 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:39:19,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-12-21 17:39:19,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054961730] [2023-12-21 17:39:19,865 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:39:19,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 17:39:19,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:39:19,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 17:39:19,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-21 17:39:19,866 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 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) [2023-12-21 17:39:20,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:39:20,009 INFO L93 Difference]: Finished difference Result 83 states and 97 transitions. [2023-12-21 17:39:20,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 17:39:20,010 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 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 [2023-12-21 17:39:20,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:39:20,011 INFO L225 Difference]: With dead ends: 83 [2023-12-21 17:39:20,011 INFO L226 Difference]: Without dead ends: 74 [2023-12-21 17:39:20,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2023-12-21 17:39:20,012 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 69 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 17:39:20,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 51 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 17:39:20,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2023-12-21 17:39:20,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 39. [2023-12-21 17:39:20,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.236842105263158) internal successors, (47), 38 states have internal predecessors, (47), 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) [2023-12-21 17:39:20,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2023-12-21 17:39:20,017 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 18 [2023-12-21 17:39:20,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:39:20,018 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2023-12-21 17:39:20,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 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) [2023-12-21 17:39:20,018 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2023-12-21 17:39:20,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-21 17:39:20,018 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:39:20,018 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:39:20,020 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-21 17:39:20,220 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 [2023-12-21 17:39:20,220 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:39:20,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:39:20,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1204999634, now seen corresponding path program 3 times [2023-12-21 17:39:20,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:39:20,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [975814269] [2023-12-21 17:39:20,221 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 17:39:20,221 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 [2023-12-21 17:39:20,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:39:20,225 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) [2023-12-21 17:39:20,229 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 [2023-12-21 17:39:20,275 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-21 17:39:20,275 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:39:20,276 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-21 17:39:20,278 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:39:20,440 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:39:20,441 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:39:20,659 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:39:20,659 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:39:20,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [975814269] [2023-12-21 17:39:20,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [975814269] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:39:20,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:39:20,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 20 [2023-12-21 17:39:20,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834600681] [2023-12-21 17:39:20,659 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:39:20,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-21 17:39:20,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:39:20,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-21 17:39:20,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2023-12-21 17:39:20,661 INFO L87 Difference]: Start difference. First operand 39 states and 47 transitions. Second operand has 20 states, 20 states have (on average 1.95) internal successors, (39), 20 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:39:20,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:39:20,874 INFO L93 Difference]: Finished difference Result 67 states and 75 transitions. [2023-12-21 17:39:20,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 17:39:20,874 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.95) internal successors, (39), 20 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-12-21 17:39:20,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:39:20,877 INFO L225 Difference]: With dead ends: 67 [2023-12-21 17:39:20,877 INFO L226 Difference]: Without dead ends: 54 [2023-12-21 17:39:20,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=121, Invalid=385, Unknown=0, NotChecked=0, Total=506 [2023-12-21 17:39:20,878 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 32 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 17:39:20,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 88 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 17:39:20,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-12-21 17:39:20,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 39. [2023-12-21 17:39:20,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.2105263157894737) internal successors, (46), 38 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:39:20,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2023-12-21 17:39:20,889 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 21 [2023-12-21 17:39:20,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:39:20,890 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2023-12-21 17:39:20,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.95) internal successors, (39), 20 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:39:20,890 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2023-12-21 17:39:20,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-21 17:39:20,891 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:39:20,891 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:39:20,894 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 [2023-12-21 17:39:21,093 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 [2023-12-21 17:39:21,096 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:39:21,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:39:21,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1792242674, now seen corresponding path program 4 times [2023-12-21 17:39:21,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:39:21,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1678340440] [2023-12-21 17:39:21,097 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 17:39:21,097 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 [2023-12-21 17:39:21,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:39:21,107 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) [2023-12-21 17:39:21,109 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 [2023-12-21 17:39:21,162 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 17:39:21,162 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:39:21,163 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 17:39:21,166 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:39:21,186 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-21 17:39:21,271 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:39:21,271 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:39:21,370 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2023-12-21 17:39:21,372 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-12-21 17:39:21,422 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:39:21,422 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:39:21,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1678340440] [2023-12-21 17:39:21,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1678340440] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:39:21,422 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:39:21,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2023-12-21 17:39:21,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954683259] [2023-12-21 17:39:21,422 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:39:21,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-21 17:39:21,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:39:21,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-21 17:39:21,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2023-12-21 17:39:21,423 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand has 17 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 17 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) [2023-12-21 17:39:21,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:39:21,727 INFO L93 Difference]: Finished difference Result 66 states and 73 transitions. [2023-12-21 17:39:21,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-21 17:39:21,727 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 17 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 24 [2023-12-21 17:39:21,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:39:21,728 INFO L225 Difference]: With dead ends: 66 [2023-12-21 17:39:21,728 INFO L226 Difference]: Without dead ends: 64 [2023-12-21 17:39:21,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=589, Unknown=0, NotChecked=0, Total=702 [2023-12-21 17:39:21,729 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 40 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 17:39:21,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 129 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 17:39:21,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-12-21 17:39:21,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 42. [2023-12-21 17:39:21,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.1951219512195121) internal successors, (49), 41 states have internal predecessors, (49), 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) [2023-12-21 17:39:21,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2023-12-21 17:39:21,733 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 24 [2023-12-21 17:39:21,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:39:21,733 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2023-12-21 17:39:21,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 17 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) [2023-12-21 17:39:21,733 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2023-12-21 17:39:21,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-21 17:39:21,748 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:39:21,748 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:39:21,755 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 [2023-12-21 17:39:21,948 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 [2023-12-21 17:39:21,949 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:39:21,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:39:21,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1968149839, now seen corresponding path program 5 times [2023-12-21 17:39:21,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:39:21,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [245723516] [2023-12-21 17:39:21,950 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 17:39:21,950 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 17:39:21,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:39:21,951 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) [2023-12-21 17:39:21,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-21 17:39:22,012 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-12-21 17:39:22,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:39:22,014 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-21 17:39:22,016 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:39:22,219 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:39:22,219 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:39:22,507 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:39:22,507 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:39:22,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [245723516] [2023-12-21 17:39:22,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [245723516] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:39:22,508 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:39:22,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 22 [2023-12-21 17:39:22,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69948704] [2023-12-21 17:39:22,508 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:39:22,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-21 17:39:22,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:39:22,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-21 17:39:22,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2023-12-21 17:39:22,509 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand has 22 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 22 states have internal predecessors, (51), 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) [2023-12-21 17:39:22,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:39:22,770 INFO L93 Difference]: Finished difference Result 78 states and 85 transitions. [2023-12-21 17:39:22,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 17:39:22,771 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 22 states have internal predecessors, (51), 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 27 [2023-12-21 17:39:22,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:39:22,771 INFO L225 Difference]: With dead ends: 78 [2023-12-21 17:39:22,771 INFO L226 Difference]: Without dead ends: 62 [2023-12-21 17:39:22,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=129, Invalid=471, Unknown=0, NotChecked=0, Total=600 [2023-12-21 17:39:22,772 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 78 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 17:39:22,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 144 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 17:39:22,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-12-21 17:39:22,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 42. [2023-12-21 17:39:22,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.170731707317073) internal successors, (48), 41 states have internal predecessors, (48), 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) [2023-12-21 17:39:22,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2023-12-21 17:39:22,776 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 27 [2023-12-21 17:39:22,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:39:22,776 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2023-12-21 17:39:22,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 22 states have internal predecessors, (51), 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) [2023-12-21 17:39:22,776 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2023-12-21 17:39:22,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-21 17:39:22,777 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:39:22,777 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:39:22,779 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 [2023-12-21 17:39:22,979 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 [2023-12-21 17:39:22,980 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:39:22,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:39:22,980 INFO L85 PathProgramCache]: Analyzing trace with hash 229186415, now seen corresponding path program 6 times [2023-12-21 17:39:22,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:39:22,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2002296034] [2023-12-21 17:39:22,980 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 17:39:22,981 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 [2023-12-21 17:39:22,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:39:22,982 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) [2023-12-21 17:39:23,008 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 [2023-12-21 17:39:23,088 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-12-21 17:39:23,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:39:23,090 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-21 17:39:23,094 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:39:23,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-21 17:39:23,229 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:39:23,229 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:39:23,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2023-12-21 17:39:23,369 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-12-21 17:39:23,462 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:39:23,463 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:39:23,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2002296034] [2023-12-21 17:39:23,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2002296034] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:39:23,464 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:39:23,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2023-12-21 17:39:23,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415900546] [2023-12-21 17:39:23,464 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:39:23,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-21 17:39:23,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:39:23,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-21 17:39:23,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2023-12-21 17:39:23,465 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand has 21 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 21 states have internal predecessors, (54), 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) [2023-12-21 17:39:23,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:39:23,932 INFO L93 Difference]: Finished difference Result 74 states and 80 transitions. [2023-12-21 17:39:23,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-21 17:39:23,932 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 21 states have internal predecessors, (54), 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 30 [2023-12-21 17:39:23,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:39:23,933 INFO L225 Difference]: With dead ends: 74 [2023-12-21 17:39:23,933 INFO L226 Difference]: Without dead ends: 72 [2023-12-21 17:39:23,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=146, Invalid=976, Unknown=0, NotChecked=0, Total=1122 [2023-12-21 17:39:23,934 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 39 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 17:39:23,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 207 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 17:39:23,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2023-12-21 17:39:23,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 45. [2023-12-21 17:39:23,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.1590909090909092) internal successors, (51), 44 states have internal predecessors, (51), 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) [2023-12-21 17:39:23,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2023-12-21 17:39:23,938 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 30 [2023-12-21 17:39:23,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:39:23,938 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2023-12-21 17:39:23,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 21 states have internal predecessors, (54), 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) [2023-12-21 17:39:23,939 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2023-12-21 17:39:23,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-21 17:39:23,939 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:39:23,939 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:39:23,957 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 [2023-12-21 17:39:24,142 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 [2023-12-21 17:39:24,142 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:39:24,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:39:24,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1235883664, now seen corresponding path program 2 times [2023-12-21 17:39:24,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:39:24,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [589031899] [2023-12-21 17:39:24,143 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 17:39:24,143 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 [2023-12-21 17:39:24,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:39:24,144 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) [2023-12-21 17:39:24,159 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 [2023-12-21 17:39:24,183 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 17:39:24,183 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:39:24,184 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 17:39:24,185 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:39:24,232 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 13 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:39:24,232 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:39:24,363 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 13 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:39:24,364 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:39:24,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [589031899] [2023-12-21 17:39:24,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [589031899] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:39:24,364 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:39:24,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-12-21 17:39:24,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287881042] [2023-12-21 17:39:24,364 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:39:24,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-21 17:39:24,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:39:24,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-21 17:39:24,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2023-12-21 17:39:24,365 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand has 16 states, 16 states have (on average 3.1875) internal successors, (51), 16 states have internal predecessors, (51), 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) [2023-12-21 17:39:24,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:39:24,865 INFO L93 Difference]: Finished difference Result 159 states and 183 transitions. [2023-12-21 17:39:24,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-21 17:39:24,865 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.1875) internal successors, (51), 16 states have internal predecessors, (51), 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 30 [2023-12-21 17:39:24,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:39:24,866 INFO L225 Difference]: With dead ends: 159 [2023-12-21 17:39:24,866 INFO L226 Difference]: Without dead ends: 150 [2023-12-21 17:39:24,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=174, Invalid=288, Unknown=0, NotChecked=0, Total=462 [2023-12-21 17:39:24,867 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 282 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 17:39:24,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 193 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 17:39:24,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2023-12-21 17:39:24,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 69. [2023-12-21 17:39:24,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 1.2205882352941178) internal successors, (83), 68 states have internal predecessors, (83), 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) [2023-12-21 17:39:24,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 83 transitions. [2023-12-21 17:39:24,873 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 83 transitions. Word has length 30 [2023-12-21 17:39:24,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:39:24,873 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 83 transitions. [2023-12-21 17:39:24,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.1875) internal successors, (51), 16 states have internal predecessors, (51), 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) [2023-12-21 17:39:24,873 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 83 transitions. [2023-12-21 17:39:24,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-21 17:39:24,874 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:39:24,874 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:39:24,878 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 [2023-12-21 17:39:25,076 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 [2023-12-21 17:39:25,076 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:39:25,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:39:25,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1300406094, now seen corresponding path program 7 times [2023-12-21 17:39:25,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:39:25,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1436183327] [2023-12-21 17:39:25,077 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 17:39:25,077 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 [2023-12-21 17:39:25,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:39:25,078 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 17:39:25,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-21 17:39:25,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 17:39:25,126 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-21 17:39:25,127 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:39:25,380 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 4 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:39:25,380 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:39:25,817 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 4 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:39:25,818 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:39:25,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1436183327] [2023-12-21 17:39:25,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1436183327] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:39:25,818 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:39:25,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 26 [2023-12-21 17:39:25,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444305234] [2023-12-21 17:39:25,818 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:39:25,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-21 17:39:25,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:39:25,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-21 17:39:25,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=509, Unknown=0, NotChecked=0, Total=650 [2023-12-21 17:39:25,819 INFO L87 Difference]: Start difference. First operand 69 states and 83 transitions. Second operand has 26 states, 26 states have (on average 2.423076923076923) internal successors, (63), 26 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:39:26,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:39:26,197 INFO L93 Difference]: Finished difference Result 113 states and 127 transitions. [2023-12-21 17:39:26,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-21 17:39:26,197 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.423076923076923) internal successors, (63), 26 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2023-12-21 17:39:26,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:39:26,198 INFO L225 Difference]: With dead ends: 113 [2023-12-21 17:39:26,198 INFO L226 Difference]: Without dead ends: 94 [2023-12-21 17:39:26,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=165, Invalid=647, Unknown=0, NotChecked=0, Total=812 [2023-12-21 17:39:26,199 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 76 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 17:39:26,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 206 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 17:39:26,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2023-12-21 17:39:26,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 69. [2023-12-21 17:39:26,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 1.2058823529411764) internal successors, (82), 68 states have internal predecessors, (82), 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) [2023-12-21 17:39:26,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 82 transitions. [2023-12-21 17:39:26,204 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 82 transitions. Word has length 33 [2023-12-21 17:39:26,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:39:26,205 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 82 transitions. [2023-12-21 17:39:26,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.423076923076923) internal successors, (63), 26 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:39:26,205 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 82 transitions. [2023-12-21 17:39:26,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-21 17:39:26,205 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:39:26,205 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:39:26,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-12-21 17:39:26,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 17:39:26,408 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:39:26,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:39:26,408 INFO L85 PathProgramCache]: Analyzing trace with hash 65130194, now seen corresponding path program 8 times [2023-12-21 17:39:26,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:39:26,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1925863510] [2023-12-21 17:39:26,409 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 17:39:26,409 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 [2023-12-21 17:39:26,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:39:26,410 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 17:39:26,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-21 17:39:26,473 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 17:39:26,473 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:39:26,476 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-21 17:39:26,483 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:39:26,546 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-21 17:39:26,683 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:39:26,683 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:39:26,869 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2023-12-21 17:39:26,874 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-12-21 17:39:26,971 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:39:26,971 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:39:26,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1925863510] [2023-12-21 17:39:26,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1925863510] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:39:26,972 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:39:26,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2023-12-21 17:39:26,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071752141] [2023-12-21 17:39:26,972 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:39:26,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-21 17:39:26,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:39:26,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-21 17:39:26,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2023-12-21 17:39:26,973 INFO L87 Difference]: Start difference. First operand 69 states and 82 transitions. Second operand has 26 states, 26 states have (on average 2.6153846153846154) internal successors, (68), 26 states have internal predecessors, (68), 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) [2023-12-21 17:39:27,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:39:27,535 INFO L93 Difference]: Finished difference Result 106 states and 119 transitions. [2023-12-21 17:39:27,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-12-21 17:39:27,536 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.6153846153846154) internal successors, (68), 26 states have internal predecessors, (68), 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 36 [2023-12-21 17:39:27,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:39:27,536 INFO L225 Difference]: With dead ends: 106 [2023-12-21 17:39:27,536 INFO L226 Difference]: Without dead ends: 104 [2023-12-21 17:39:27,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=189, Invalid=1533, Unknown=0, NotChecked=0, Total=1722 [2023-12-21 17:39:27,537 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 46 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 582 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 17:39:27,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 326 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 582 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 17:39:27,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2023-12-21 17:39:27,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 72. [2023-12-21 17:39:27,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.1971830985915493) internal successors, (85), 71 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:39:27,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 85 transitions. [2023-12-21 17:39:27,544 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 85 transitions. Word has length 36 [2023-12-21 17:39:27,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:39:27,544 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 85 transitions. [2023-12-21 17:39:27,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.6153846153846154) internal successors, (68), 26 states have internal predecessors, (68), 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) [2023-12-21 17:39:27,544 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 85 transitions. [2023-12-21 17:39:27,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-21 17:39:27,545 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:39:27,545 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:39:27,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-12-21 17:39:27,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 17:39:27,748 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:39:27,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:39:27,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1026503057, now seen corresponding path program 9 times [2023-12-21 17:39:27,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:39:27,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1568770891] [2023-12-21 17:39:27,748 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 17:39:27,748 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 [2023-12-21 17:39:27,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:39:27,749 INFO L229 MonitoredProcess]: Starting monitored process 15 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) [2023-12-21 17:39:27,750 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 (15)] Waiting until timeout for monitored process [2023-12-21 17:39:27,821 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-12-21 17:39:27,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:39:27,824 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-21 17:39:27,825 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:39:28,174 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 5 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:39:28,174 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:39:28,908 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 5 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:39:28,908 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:39:28,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1568770891] [2023-12-21 17:39:28,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1568770891] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:39:28,908 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:39:28,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17] total 34 [2023-12-21 17:39:28,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411696090] [2023-12-21 17:39:28,908 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:39:28,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-21 17:39:28,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:39:28,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-21 17:39:28,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=876, Unknown=0, NotChecked=0, Total=1122 [2023-12-21 17:39:28,910 INFO L87 Difference]: Start difference. First operand 72 states and 85 transitions. Second operand has 34 states, 34 states have (on average 2.2058823529411766) internal successors, (75), 34 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:39:30,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:39:30,916 INFO L93 Difference]: Finished difference Result 164 states and 186 transitions. [2023-12-21 17:39:30,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-12-21 17:39:30,916 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.2058823529411766) internal successors, (75), 34 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2023-12-21 17:39:30,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:39:30,917 INFO L225 Difference]: With dead ends: 164 [2023-12-21 17:39:30,917 INFO L226 Difference]: Without dead ends: 142 [2023-12-21 17:39:30,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 749 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=717, Invalid=2253, Unknown=0, NotChecked=0, Total=2970 [2023-12-21 17:39:30,918 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 155 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 17:39:30,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 413 Invalid, 661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 618 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 17:39:30,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2023-12-21 17:39:30,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 101. [2023-12-21 17:39:30,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.26) internal successors, (126), 100 states have internal predecessors, (126), 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) [2023-12-21 17:39:30,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 126 transitions. [2023-12-21 17:39:30,929 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 126 transitions. Word has length 39 [2023-12-21 17:39:30,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:39:30,929 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 126 transitions. [2023-12-21 17:39:30,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.2058823529411766) internal successors, (75), 34 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:39:30,930 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 126 transitions. [2023-12-21 17:39:30,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-21 17:39:30,930 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:39:30,930 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:39:30,935 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 (15)] Ended with exit code 0 [2023-12-21 17:39:31,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /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 [2023-12-21 17:39:31,133 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:39:31,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:39:31,134 INFO L85 PathProgramCache]: Analyzing trace with hash 57812111, now seen corresponding path program 10 times [2023-12-21 17:39:31,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:39:31,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [928058080] [2023-12-21 17:39:31,134 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 17:39:31,134 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 [2023-12-21 17:39:31,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:39:31,135 INFO L229 MonitoredProcess]: Starting monitored process 16 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) [2023-12-21 17:39:31,135 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 (16)] Waiting until timeout for monitored process [2023-12-21 17:39:31,186 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 17:39:31,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:39:31,188 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-21 17:39:31,190 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:39:31,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-21 17:39:31,425 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:39:31,425 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:39:31,655 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2023-12-21 17:39:31,656 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-12-21 17:39:31,804 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:39:31,804 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:39:31,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [928058080] [2023-12-21 17:39:31,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [928058080] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:39:31,804 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:39:31,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 29 [2023-12-21 17:39:31,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790996515] [2023-12-21 17:39:31,805 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:39:31,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-21 17:39:31,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:39:31,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-21 17:39:31,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=726, Unknown=0, NotChecked=0, Total=812 [2023-12-21 17:39:31,806 INFO L87 Difference]: Start difference. First operand 101 states and 126 transitions. Second operand has 29 states, 29 states have (on average 2.689655172413793) internal successors, (78), 29 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:39:32,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:39:32,649 INFO L93 Difference]: Finished difference Result 142 states and 167 transitions. [2023-12-21 17:39:32,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-12-21 17:39:32,649 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.689655172413793) internal successors, (78), 29 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2023-12-21 17:39:32,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:39:32,650 INFO L225 Difference]: With dead ends: 142 [2023-12-21 17:39:32,650 INFO L226 Difference]: Without dead ends: 140 [2023-12-21 17:39:32,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 455 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=212, Invalid=2044, Unknown=0, NotChecked=0, Total=2256 [2023-12-21 17:39:32,651 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 54 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 17:39:32,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 339 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 602 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 17:39:32,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2023-12-21 17:39:32,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 104. [2023-12-21 17:39:32,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.2524271844660195) internal successors, (129), 103 states have internal predecessors, (129), 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) [2023-12-21 17:39:32,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 129 transitions. [2023-12-21 17:39:32,663 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 129 transitions. Word has length 42 [2023-12-21 17:39:32,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:39:32,663 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 129 transitions. [2023-12-21 17:39:32,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.689655172413793) internal successors, (78), 29 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 17:39:32,663 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 129 transitions. [2023-12-21 17:39:32,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-21 17:39:32,664 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:39:32,664 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:39:32,668 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 (16)] Forceful destruction successful, exit code 0 [2023-12-21 17:39:32,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /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 [2023-12-21 17:39:32,867 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:39:32,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:39:32,868 INFO L85 PathProgramCache]: Analyzing trace with hash 3818386, now seen corresponding path program 11 times [2023-12-21 17:39:32,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:39:32,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1715040437] [2023-12-21 17:39:32,868 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 17:39:32,868 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 [2023-12-21 17:39:32,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:39:32,884 INFO L229 MonitoredProcess]: Starting monitored process 17 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) [2023-12-21 17:39:32,900 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 (17)] Waiting until timeout for monitored process [2023-12-21 17:39:32,971 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2023-12-21 17:39:32,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:39:32,974 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-21 17:39:32,975 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:39:33,372 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 6 proven. 102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:39:33,373 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:39:34,420 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 15 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:39:34,421 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:39:34,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1715040437] [2023-12-21 17:39:34,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1715040437] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:39:34,421 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:39:34,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19] total 38 [2023-12-21 17:39:34,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894168393] [2023-12-21 17:39:34,421 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:39:34,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-12-21 17:39:34,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:39:34,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-12-21 17:39:34,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=293, Invalid=1113, Unknown=0, NotChecked=0, Total=1406 [2023-12-21 17:39:34,422 INFO L87 Difference]: Start difference. First operand 104 states and 129 transitions. Second operand has 38 states, 38 states have (on average 2.289473684210526) internal successors, (87), 38 states have internal predecessors, (87), 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) [2023-12-21 17:39:34,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:39:34,998 INFO L93 Difference]: Finished difference Result 164 states and 189 transitions. [2023-12-21 17:39:34,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-21 17:39:34,998 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.289473684210526) internal successors, (87), 38 states have internal predecessors, (87), 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 45 [2023-12-21 17:39:34,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:39:34,999 INFO L225 Difference]: With dead ends: 164 [2023-12-21 17:39:34,999 INFO L226 Difference]: Without dead ends: 139 [2023-12-21 17:39:35,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=330, Invalid=1310, Unknown=0, NotChecked=0, Total=1640 [2023-12-21 17:39:35,000 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 73 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 812 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 17:39:35,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 403 Invalid, 838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 812 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 17:39:35,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2023-12-21 17:39:35,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 104. [2023-12-21 17:39:35,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.2427184466019416) internal successors, (128), 103 states have internal predecessors, (128), 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) [2023-12-21 17:39:35,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 128 transitions. [2023-12-21 17:39:35,035 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 128 transitions. Word has length 45 [2023-12-21 17:39:35,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:39:35,035 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 128 transitions. [2023-12-21 17:39:35,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.289473684210526) internal successors, (87), 38 states have internal predecessors, (87), 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) [2023-12-21 17:39:35,035 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 128 transitions. [2023-12-21 17:39:35,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-12-21 17:39:35,035 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:39:35,036 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:39:35,048 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 (17)] Forceful destruction successful, exit code 0 [2023-12-21 17:39:35,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /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 [2023-12-21 17:39:35,248 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:39:35,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:39:35,249 INFO L85 PathProgramCache]: Analyzing trace with hash 2026537394, now seen corresponding path program 12 times [2023-12-21 17:39:35,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:39:35,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [738641487] [2023-12-21 17:39:35,249 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 17:39:35,249 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 [2023-12-21 17:39:35,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:39:35,250 INFO L229 MonitoredProcess]: Starting monitored process 18 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) [2023-12-21 17:39:35,250 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 (18)] Waiting until timeout for monitored process [2023-12-21 17:39:35,334 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2023-12-21 17:39:35,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:39:35,337 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-21 17:39:35,339 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:39:35,384 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-21 17:39:35,603 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 0 proven. 127 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:39:35,603 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:39:35,879 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2023-12-21 17:39:35,880 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-12-21 17:39:36,063 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 0 proven. 127 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:39:36,064 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:39:36,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [738641487] [2023-12-21 17:39:36,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [738641487] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:39:36,064 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:39:36,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 33 [2023-12-21 17:39:36,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227281165] [2023-12-21 17:39:36,064 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:39:36,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-21 17:39:36,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:39:36,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-21 17:39:36,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=957, Unknown=0, NotChecked=0, Total=1056 [2023-12-21 17:39:36,065 INFO L87 Difference]: Start difference. First operand 104 states and 128 transitions. Second operand has 33 states, 33 states have (on average 2.727272727272727) internal successors, (90), 33 states have internal predecessors, (90), 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) [2023-12-21 17:39:37,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:39:37,085 INFO L93 Difference]: Finished difference Result 150 states and 174 transitions. [2023-12-21 17:39:37,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-12-21 17:39:37,085 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.727272727272727) internal successors, (90), 33 states have internal predecessors, (90), 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 48 [2023-12-21 17:39:37,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:39:37,086 INFO L225 Difference]: With dead ends: 150 [2023-12-21 17:39:37,086 INFO L226 Difference]: Without dead ends: 148 [2023-12-21 17:39:37,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 615 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=245, Invalid=2725, Unknown=0, NotChecked=0, Total=2970 [2023-12-21 17:39:37,087 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 59 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 850 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 17:39:37,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 478 Invalid, 887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 850 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 17:39:37,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2023-12-21 17:39:37,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 107. [2023-12-21 17:39:37,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 1.2358490566037736) internal successors, (131), 106 states have internal predecessors, (131), 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) [2023-12-21 17:39:37,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 131 transitions. [2023-12-21 17:39:37,101 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 131 transitions. Word has length 48 [2023-12-21 17:39:37,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:39:37,101 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 131 transitions. [2023-12-21 17:39:37,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.727272727272727) internal successors, (90), 33 states have internal predecessors, (90), 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) [2023-12-21 17:39:37,101 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 131 transitions. [2023-12-21 17:39:37,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-21 17:39:37,101 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:39:37,101 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:39:37,104 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 (18)] Forceful destruction successful, exit code 0 [2023-12-21 17:39:37,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /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 [2023-12-21 17:39:37,302 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:39:37,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:39:37,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1774669937, now seen corresponding path program 13 times [2023-12-21 17:39:37,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:39:37,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1395793410] [2023-12-21 17:39:37,303 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 17:39:37,303 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 17:39:37,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:39:37,304 INFO L229 MonitoredProcess]: Starting monitored process 19 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) [2023-12-21 17:39:37,321 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 (19)] Waiting until timeout for monitored process [2023-12-21 17:39:37,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 17:39:37,371 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-21 17:39:37,372 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:39:37,809 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 7 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:39:37,810 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:39:38,941 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 7 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:39:38,942 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:39:38,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1395793410] [2023-12-21 17:39:38,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1395793410] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:39:38,942 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:39:38,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 20] total 42 [2023-12-21 17:39:38,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670007246] [2023-12-21 17:39:38,942 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:39:38,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-12-21 17:39:38,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:39:38,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-12-21 17:39:38,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=342, Invalid=1380, Unknown=0, NotChecked=0, Total=1722 [2023-12-21 17:39:38,943 INFO L87 Difference]: Start difference. First operand 107 states and 131 transitions. Second operand has 42 states, 42 states have (on average 2.357142857142857) internal successors, (99), 42 states have internal predecessors, (99), 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) [2023-12-21 17:39:39,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:39:39,589 INFO L93 Difference]: Finished difference Result 175 states and 199 transitions. [2023-12-21 17:39:39,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-21 17:39:39,590 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.357142857142857) internal successors, (99), 42 states have internal predecessors, (99), 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 51 [2023-12-21 17:39:39,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:39:39,590 INFO L225 Difference]: With dead ends: 175 [2023-12-21 17:39:39,590 INFO L226 Difference]: Without dead ends: 147 [2023-12-21 17:39:39,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 595 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=382, Invalid=1598, Unknown=0, NotChecked=0, Total=1980 [2023-12-21 17:39:39,591 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 125 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 812 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 17:39:39,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 413 Invalid, 853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 812 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 17:39:39,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2023-12-21 17:39:39,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 107. [2023-12-21 17:39:39,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 1.2264150943396226) internal successors, (130), 106 states have internal predecessors, (130), 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) [2023-12-21 17:39:39,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 130 transitions. [2023-12-21 17:39:39,605 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 130 transitions. Word has length 51 [2023-12-21 17:39:39,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:39:39,605 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 130 transitions. [2023-12-21 17:39:39,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.357142857142857) internal successors, (99), 42 states have internal predecessors, (99), 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) [2023-12-21 17:39:39,605 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 130 transitions. [2023-12-21 17:39:39,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-21 17:39:39,605 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:39:39,605 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:39:39,610 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 (19)] Ended with exit code 0 [2023-12-21 17:39:39,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /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 [2023-12-21 17:39:39,806 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:39:39,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:39:39,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1041640017, now seen corresponding path program 14 times [2023-12-21 17:39:39,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:39:39,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [766557652] [2023-12-21 17:39:39,806 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 17:39:39,807 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 [2023-12-21 17:39:39,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:39:39,807 INFO L229 MonitoredProcess]: Starting monitored process 20 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) [2023-12-21 17:39:39,809 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 (20)] Waiting until timeout for monitored process [2023-12-21 17:39:39,873 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 17:39:39,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:39:39,877 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-21 17:39:39,878 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:39:39,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-21 17:39:40,267 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:39:40,267 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:39:40,618 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2023-12-21 17:39:40,620 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-12-21 17:39:40,830 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:39:40,831 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:39:40,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [766557652] [2023-12-21 17:39:40,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [766557652] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:39:40,831 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:39:40,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 37 [2023-12-21 17:39:40,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832621582] [2023-12-21 17:39:40,831 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:39:40,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-12-21 17:39:40,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:39:40,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-12-21 17:39:40,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1220, Unknown=0, NotChecked=0, Total=1332 [2023-12-21 17:39:40,832 INFO L87 Difference]: Start difference. First operand 107 states and 130 transitions. Second operand has 37 states, 37 states have (on average 2.7567567567567566) internal successors, (102), 37 states have internal predecessors, (102), 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) [2023-12-21 17:39:42,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:39:42,109 INFO L93 Difference]: Finished difference Result 158 states and 181 transitions. [2023-12-21 17:39:42,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-12-21 17:39:42,109 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.7567567567567566) internal successors, (102), 37 states have internal predecessors, (102), 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 54 [2023-12-21 17:39:42,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:39:42,110 INFO L225 Difference]: With dead ends: 158 [2023-12-21 17:39:42,110 INFO L226 Difference]: Without dead ends: 156 [2023-12-21 17:39:42,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 799 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=278, Invalid=3504, Unknown=0, NotChecked=0, Total=3782 [2023-12-21 17:39:42,112 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 68 mSDsluCounter, 588 mSDsCounter, 0 mSdLazyCounter, 1107 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 1148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 17:39:42,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 619 Invalid, 1148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1107 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 17:39:42,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2023-12-21 17:39:42,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 110. [2023-12-21 17:39:42,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 1.2201834862385321) internal successors, (133), 109 states have internal predecessors, (133), 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) [2023-12-21 17:39:42,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 133 transitions. [2023-12-21 17:39:42,129 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 133 transitions. Word has length 54 [2023-12-21 17:39:42,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:39:42,129 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 133 transitions. [2023-12-21 17:39:42,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.7567567567567566) internal successors, (102), 37 states have internal predecessors, (102), 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) [2023-12-21 17:39:42,129 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 133 transitions. [2023-12-21 17:39:42,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-21 17:39:42,129 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:39:42,129 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:39:42,135 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 (20)] Forceful destruction successful, exit code 0 [2023-12-21 17:39:42,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /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 [2023-12-21 17:39:42,330 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:39:42,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:39:42,330 INFO L85 PathProgramCache]: Analyzing trace with hash -2136021360, now seen corresponding path program 3 times [2023-12-21 17:39:42,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:39:42,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [369571152] [2023-12-21 17:39:42,331 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 17:39:42,331 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 [2023-12-21 17:39:42,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:39:42,332 INFO L229 MonitoredProcess]: Starting monitored process 21 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) [2023-12-21 17:39:42,332 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 (21)] Waiting until timeout for monitored process [2023-12-21 17:39:42,429 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2023-12-21 17:39:42,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:39:42,431 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-21 17:39:42,432 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:39:42,789 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 29 proven. 301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:39:42,789 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:39:43,904 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 29 proven. 301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:39:43,904 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:39:43,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [369571152] [2023-12-21 17:39:43,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [369571152] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:39:43,904 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:39:43,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18] total 36 [2023-12-21 17:39:43,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835103519] [2023-12-21 17:39:43,904 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:39:43,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-21 17:39:43,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:39:43,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-21 17:39:43,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=342, Invalid=918, Unknown=0, NotChecked=0, Total=1260 [2023-12-21 17:39:43,905 INFO L87 Difference]: Start difference. First operand 110 states and 133 transitions. Second operand has 36 states, 36 states have (on average 2.8055555555555554) internal successors, (101), 36 states have internal predecessors, (101), 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) [2023-12-21 17:39:51,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:39:51,761 INFO L93 Difference]: Finished difference Result 354 states and 424 transitions. [2023-12-21 17:39:51,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-12-21 17:39:51,761 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.8055555555555554) internal successors, (101), 36 states have internal predecessors, (101), 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 54 [2023-12-21 17:39:51,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:39:51,763 INFO L225 Difference]: With dead ends: 354 [2023-12-21 17:39:51,763 INFO L226 Difference]: Without dead ends: 316 [2023-12-21 17:39:51,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 823 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=1471, Invalid=2951, Unknown=0, NotChecked=0, Total=4422 [2023-12-21 17:39:51,764 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 1188 mSDsluCounter, 732 mSDsCounter, 0 mSdLazyCounter, 1595 mSolverCounterSat, 470 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1188 SdHoareTripleChecker+Valid, 786 SdHoareTripleChecker+Invalid, 2065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 470 IncrementalHoareTripleChecker+Valid, 1595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-21 17:39:51,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1188 Valid, 786 Invalid, 2065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [470 Valid, 1595 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-21 17:39:51,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2023-12-21 17:39:51,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 158. [2023-12-21 17:39:51,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 1.2547770700636942) internal successors, (197), 157 states have internal predecessors, (197), 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) [2023-12-21 17:39:51,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 197 transitions. [2023-12-21 17:39:51,793 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 197 transitions. Word has length 54 [2023-12-21 17:39:51,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:39:51,793 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 197 transitions. [2023-12-21 17:39:51,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.8055555555555554) internal successors, (101), 36 states have internal predecessors, (101), 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) [2023-12-21 17:39:51,794 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 197 transitions. [2023-12-21 17:39:51,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-21 17:39:51,794 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:39:51,794 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:39:51,799 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 (21)] Forceful destruction successful, exit code 0 [2023-12-21 17:39:51,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /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 [2023-12-21 17:39:51,997 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:39:51,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:39:51,997 INFO L85 PathProgramCache]: Analyzing trace with hash -353927566, now seen corresponding path program 15 times [2023-12-21 17:39:51,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:39:51,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [423171147] [2023-12-21 17:39:51,998 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 17:39:51,998 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 [2023-12-21 17:39:51,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:39:51,999 INFO L229 MonitoredProcess]: Starting monitored process 22 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) [2023-12-21 17:39:51,999 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 (22)] Waiting until timeout for monitored process [2023-12-21 17:39:52,114 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2023-12-21 17:39:52,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:39:52,118 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-21 17:39:52,119 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:39:52,619 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 8 proven. 184 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:39:52,619 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:39:54,233 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 11 proven. 181 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:39:54,233 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:39:54,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [423171147] [2023-12-21 17:39:54,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [423171147] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:39:54,233 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:39:54,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 22] total 44 [2023-12-21 17:39:54,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219722430] [2023-12-21 17:39:54,233 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:39:54,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-12-21 17:39:54,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:39:54,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-12-21 17:39:54,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=349, Invalid=1543, Unknown=0, NotChecked=0, Total=1892 [2023-12-21 17:39:54,235 INFO L87 Difference]: Start difference. First operand 158 states and 197 transitions. Second operand has 44 states, 44 states have (on average 2.522727272727273) internal successors, (111), 44 states have internal predecessors, (111), 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) [2023-12-21 17:39:55,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:39:55,249 INFO L93 Difference]: Finished difference Result 234 states and 273 transitions. [2023-12-21 17:39:55,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-21 17:39:55,250 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.522727272727273) internal successors, (111), 44 states have internal predecessors, (111), 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 57 [2023-12-21 17:39:55,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:39:55,251 INFO L225 Difference]: With dead ends: 234 [2023-12-21 17:39:55,251 INFO L226 Difference]: Without dead ends: 203 [2023-12-21 17:39:55,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 678 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=411, Invalid=1845, Unknown=0, NotChecked=0, Total=2256 [2023-12-21 17:39:55,251 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 107 mSDsluCounter, 613 mSDsCounter, 0 mSdLazyCounter, 1263 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 1298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 17:39:55,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 642 Invalid, 1298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1263 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 17:39:55,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2023-12-21 17:39:55,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 158. [2023-12-21 17:39:55,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 1.2484076433121019) internal successors, (196), 157 states have internal predecessors, (196), 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) [2023-12-21 17:39:55,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 196 transitions. [2023-12-21 17:39:55,273 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 196 transitions. Word has length 57 [2023-12-21 17:39:55,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:39:55,273 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 196 transitions. [2023-12-21 17:39:55,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.522727272727273) internal successors, (111), 44 states have internal predecessors, (111), 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) [2023-12-21 17:39:55,273 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 196 transitions. [2023-12-21 17:39:55,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-21 17:39:55,273 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:39:55,273 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:39:55,279 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 (22)] Forceful destruction successful, exit code 0 [2023-12-21 17:39:55,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /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 [2023-12-21 17:39:55,479 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:39:55,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:39:55,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1754559342, now seen corresponding path program 16 times [2023-12-21 17:39:55,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:39:55,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [833893104] [2023-12-21 17:39:55,480 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 17:39:55,480 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 [2023-12-21 17:39:55,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:39:55,481 INFO L229 MonitoredProcess]: Starting monitored process 23 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) [2023-12-21 17:39:55,482 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 (23)] Waiting until timeout for monitored process [2023-12-21 17:39:55,547 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 17:39:55,547 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:39:55,551 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-21 17:39:55,552 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:39:55,623 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-21 17:39:55,901 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 0 proven. 217 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:39:55,901 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:39:56,299 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2023-12-21 17:39:56,302 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-12-21 17:39:56,554 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 0 proven. 217 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:39:56,555 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:39:56,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [833893104] [2023-12-21 17:39:56,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [833893104] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:39:56,555 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:39:56,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 41 [2023-12-21 17:39:56,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270041111] [2023-12-21 17:39:56,555 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:39:56,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-12-21 17:39:56,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:39:56,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-12-21 17:39:56,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=1515, Unknown=0, NotChecked=0, Total=1640 [2023-12-21 17:39:56,556 INFO L87 Difference]: Start difference. First operand 158 states and 196 transitions. Second operand has 41 states, 41 states have (on average 2.7804878048780486) internal successors, (114), 41 states have internal predecessors, (114), 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) [2023-12-21 17:39:58,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:39:58,030 INFO L93 Difference]: Finished difference Result 214 states and 252 transitions. [2023-12-21 17:39:58,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-12-21 17:39:58,032 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.7804878048780486) internal successors, (114), 41 states have internal predecessors, (114), 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 60 [2023-12-21 17:39:58,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:39:58,033 INFO L225 Difference]: With dead ends: 214 [2023-12-21 17:39:58,033 INFO L226 Difference]: Without dead ends: 212 [2023-12-21 17:39:58,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1007 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=311, Invalid=4381, Unknown=0, NotChecked=0, Total=4692 [2023-12-21 17:39:58,034 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 82 mSDsluCounter, 685 mSDsCounter, 0 mSdLazyCounter, 1275 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 1323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 17:39:58,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 719 Invalid, 1323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1275 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 17:39:58,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2023-12-21 17:39:58,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 161. [2023-12-21 17:39:58,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 160 states have (on average 1.24375) internal successors, (199), 160 states have internal predecessors, (199), 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) [2023-12-21 17:39:58,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 199 transitions. [2023-12-21 17:39:58,058 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 199 transitions. Word has length 60 [2023-12-21 17:39:58,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:39:58,058 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 199 transitions. [2023-12-21 17:39:58,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.7804878048780486) internal successors, (114), 41 states have internal predecessors, (114), 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) [2023-12-21 17:39:58,058 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 199 transitions. [2023-12-21 17:39:58,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-21 17:39:58,058 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:39:58,058 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:39:58,061 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 (23)] Forceful destruction successful, exit code 0 [2023-12-21 17:39:58,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /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 [2023-12-21 17:39:58,262 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:39:58,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:39:58,262 INFO L85 PathProgramCache]: Analyzing trace with hash -320259921, now seen corresponding path program 17 times [2023-12-21 17:39:58,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:39:58,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1822988871] [2023-12-21 17:39:58,262 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 17:39:58,262 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 [2023-12-21 17:39:58,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:39:58,264 INFO L229 MonitoredProcess]: Starting monitored process 24 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) [2023-12-21 17:39:58,271 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 (24)] Waiting until timeout for monitored process [2023-12-21 17:39:58,372 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2023-12-21 17:39:58,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:39:58,376 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-21 17:39:58,377 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:39:58,868 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 9 proven. 234 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:39:58,868 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:40:00,970 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 13 proven. 230 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:40:00,971 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:40:00,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1822988871] [2023-12-21 17:40:00,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1822988871] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:40:00,971 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:40:00,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 25] total 50 [2023-12-21 17:40:00,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503896929] [2023-12-21 17:40:00,971 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:40:00,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-12-21 17:40:00,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:40:00,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-12-21 17:40:00,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=439, Invalid=2011, Unknown=0, NotChecked=0, Total=2450 [2023-12-21 17:40:00,973 INFO L87 Difference]: Start difference. First operand 161 states and 199 transitions. Second operand has 50 states, 50 states have (on average 2.46) internal successors, (123), 50 states have internal predecessors, (123), 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) [2023-12-21 17:40:02,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:40:02,117 INFO L93 Difference]: Finished difference Result 245 states and 283 transitions. [2023-12-21 17:40:02,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-21 17:40:02,121 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.46) internal successors, (123), 50 states have internal predecessors, (123), 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 63 [2023-12-21 17:40:02,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:40:02,121 INFO L225 Difference]: With dead ends: 245 [2023-12-21 17:40:02,121 INFO L226 Difference]: Without dead ends: 211 [2023-12-21 17:40:02,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 899 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=508, Invalid=2354, Unknown=0, NotChecked=0, Total=2862 [2023-12-21 17:40:02,122 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 168 mSDsluCounter, 715 mSDsCounter, 0 mSdLazyCounter, 1445 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 747 SdHoareTripleChecker+Invalid, 1494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-21 17:40:02,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 747 Invalid, 1494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1445 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-21 17:40:02,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2023-12-21 17:40:02,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 161. [2023-12-21 17:40:02,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 160 states have (on average 1.2375) internal successors, (198), 160 states have internal predecessors, (198), 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) [2023-12-21 17:40:02,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 198 transitions. [2023-12-21 17:40:02,146 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 198 transitions. Word has length 63 [2023-12-21 17:40:02,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:40:02,146 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 198 transitions. [2023-12-21 17:40:02,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.46) internal successors, (123), 50 states have internal predecessors, (123), 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) [2023-12-21 17:40:02,146 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 198 transitions. [2023-12-21 17:40:02,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-21 17:40:02,146 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:40:02,146 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:40:02,150 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 (24)] Forceful destruction successful, exit code 0 [2023-12-21 17:40:02,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /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 [2023-12-21 17:40:02,350 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:40:02,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:40:02,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1517432527, now seen corresponding path program 18 times [2023-12-21 17:40:02,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:40:02,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2010745154] [2023-12-21 17:40:02,351 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 17:40:02,351 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 [2023-12-21 17:40:02,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:40:02,352 INFO L229 MonitoredProcess]: Starting monitored process 25 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) [2023-12-21 17:40:02,353 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 (25)] Waiting until timeout for monitored process [2023-12-21 17:40:02,472 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2023-12-21 17:40:02,473 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:40:02,476 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-21 17:40:02,478 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:40:02,547 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-21 17:40:02,875 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 0 proven. 271 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:40:02,875 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:40:03,372 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2023-12-21 17:40:03,374 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-12-21 17:40:03,703 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 0 proven. 271 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:40:03,704 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:40:03,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2010745154] [2023-12-21 17:40:03,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2010745154] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:40:03,704 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:40:03,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 45 [2023-12-21 17:40:03,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480240754] [2023-12-21 17:40:03,704 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:40:03,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-12-21 17:40:03,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:40:03,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-12-21 17:40:03,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1842, Unknown=0, NotChecked=0, Total=1980 [2023-12-21 17:40:03,705 INFO L87 Difference]: Start difference. First operand 161 states and 198 transitions. Second operand has 45 states, 45 states have (on average 2.8) internal successors, (126), 45 states have internal predecessors, (126), 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) [2023-12-21 17:40:05,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:40:05,561 INFO L93 Difference]: Finished difference Result 222 states and 259 transitions. [2023-12-21 17:40:05,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-12-21 17:40:05,561 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.8) internal successors, (126), 45 states have internal predecessors, (126), 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 66 [2023-12-21 17:40:05,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:40:05,562 INFO L225 Difference]: With dead ends: 222 [2023-12-21 17:40:05,562 INFO L226 Difference]: Without dead ends: 220 [2023-12-21 17:40:05,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1239 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=344, Invalid=5356, Unknown=0, NotChecked=0, Total=5700 [2023-12-21 17:40:05,564 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 77 mSDsluCounter, 869 mSDsCounter, 0 mSdLazyCounter, 1633 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 906 SdHoareTripleChecker+Invalid, 1683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-21 17:40:05,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 906 Invalid, 1683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1633 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-21 17:40:05,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2023-12-21 17:40:05,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 164. [2023-12-21 17:40:05,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 163 states have (on average 1.2331288343558282) internal successors, (201), 163 states have internal predecessors, (201), 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) [2023-12-21 17:40:05,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 201 transitions. [2023-12-21 17:40:05,591 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 201 transitions. Word has length 66 [2023-12-21 17:40:05,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:40:05,591 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 201 transitions. [2023-12-21 17:40:05,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.8) internal successors, (126), 45 states have internal predecessors, (126), 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) [2023-12-21 17:40:05,591 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 201 transitions. [2023-12-21 17:40:05,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-21 17:40:05,592 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:40:05,592 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:40:05,598 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 (25)] Ended with exit code 0 [2023-12-21 17:40:05,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /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 [2023-12-21 17:40:05,792 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:40:05,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:40:05,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1306726738, now seen corresponding path program 19 times [2023-12-21 17:40:05,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:40:05,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [153264308] [2023-12-21 17:40:05,793 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 17:40:05,793 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 [2023-12-21 17:40:05,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:40:05,794 INFO L229 MonitoredProcess]: Starting monitored process 26 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) [2023-12-21 17:40:05,795 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 (26)] Waiting until timeout for monitored process [2023-12-21 17:40:05,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 17:40:05,879 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-21 17:40:05,882 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:40:06,499 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 10 proven. 290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:40:06,499 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:40:08,537 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 10 proven. 290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:40:08,538 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:40:08,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [153264308] [2023-12-21 17:40:08,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [153264308] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:40:08,538 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:40:08,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 26] total 53 [2023-12-21 17:40:08,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111445069] [2023-12-21 17:40:08,538 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:40:08,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-12-21 17:40:08,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:40:08,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-12-21 17:40:08,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=527, Invalid=2229, Unknown=0, NotChecked=0, Total=2756 [2023-12-21 17:40:08,540 INFO L87 Difference]: Start difference. First operand 164 states and 201 transitions. Second operand has 53 states, 53 states have (on average 2.547169811320755) internal successors, (135), 53 states have internal predecessors, (135), 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) [2023-12-21 17:40:09,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:40:09,650 INFO L93 Difference]: Finished difference Result 256 states and 293 transitions. [2023-12-21 17:40:09,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-21 17:40:09,652 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.547169811320755) internal successors, (135), 53 states have internal predecessors, (135), 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 69 [2023-12-21 17:40:09,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:40:09,653 INFO L225 Difference]: With dead ends: 256 [2023-12-21 17:40:09,653 INFO L226 Difference]: Without dead ends: 219 [2023-12-21 17:40:09,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 951 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=575, Invalid=2505, Unknown=0, NotChecked=0, Total=3080 [2023-12-21 17:40:09,653 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 210 mSDsluCounter, 859 mSDsCounter, 0 mSdLazyCounter, 1690 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 894 SdHoareTripleChecker+Invalid, 1741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-21 17:40:09,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 894 Invalid, 1741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1690 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-21 17:40:09,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2023-12-21 17:40:09,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 164. [2023-12-21 17:40:09,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 163 states have (on average 1.2269938650306749) internal successors, (200), 163 states have internal predecessors, (200), 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) [2023-12-21 17:40:09,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 200 transitions. [2023-12-21 17:40:09,687 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 200 transitions. Word has length 69 [2023-12-21 17:40:09,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:40:09,688 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 200 transitions. [2023-12-21 17:40:09,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.547169811320755) internal successors, (135), 53 states have internal predecessors, (135), 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) [2023-12-21 17:40:09,688 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 200 transitions. [2023-12-21 17:40:09,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-21 17:40:09,688 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:40:09,688 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:40:09,696 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 (26)] Forceful destruction successful, exit code 0 [2023-12-21 17:40:09,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /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 [2023-12-21 17:40:09,892 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:40:09,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:40:09,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1327689586, now seen corresponding path program 20 times [2023-12-21 17:40:09,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:40:09,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [725005359] [2023-12-21 17:40:09,893 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 17:40:09,893 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 [2023-12-21 17:40:09,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:40:09,894 INFO L229 MonitoredProcess]: Starting monitored process 27 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) [2023-12-21 17:40:09,894 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 (27)] Waiting until timeout for monitored process [2023-12-21 17:40:09,980 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 17:40:09,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:40:09,985 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-21 17:40:09,986 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:40:10,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-21 17:40:10,451 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 0 proven. 331 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:40:10,451 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:40:11,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2023-12-21 17:40:11,080 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-12-21 17:40:11,457 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 0 proven. 331 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:40:11,457 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:40:11,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [725005359] [2023-12-21 17:40:11,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [725005359] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:40:11,457 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:40:11,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 49 [2023-12-21 17:40:11,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598033206] [2023-12-21 17:40:11,458 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:40:11,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-12-21 17:40:11,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:40:11,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-12-21 17:40:11,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=2201, Unknown=0, NotChecked=0, Total=2352 [2023-12-21 17:40:11,459 INFO L87 Difference]: Start difference. First operand 164 states and 200 transitions. Second operand has 49 states, 49 states have (on average 2.816326530612245) internal successors, (138), 49 states have internal predecessors, (138), 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) [2023-12-21 17:40:13,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:40:13,731 INFO L93 Difference]: Finished difference Result 230 states and 266 transitions. [2023-12-21 17:40:13,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-12-21 17:40:13,731 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.816326530612245) internal successors, (138), 49 states have internal predecessors, (138), 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 [2023-12-21 17:40:13,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:40:13,732 INFO L225 Difference]: With dead ends: 230 [2023-12-21 17:40:13,732 INFO L226 Difference]: Without dead ends: 228 [2023-12-21 17:40:13,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1495 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=377, Invalid=6429, Unknown=0, NotChecked=0, Total=6806 [2023-12-21 17:40:13,732 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 79 mSDsluCounter, 1149 mSDsCounter, 0 mSdLazyCounter, 2135 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 1189 SdHoareTripleChecker+Invalid, 2189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 2135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-21 17:40:13,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 1189 Invalid, 2189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 2135 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-21 17:40:13,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2023-12-21 17:40:13,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 167. [2023-12-21 17:40:13,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 1.2228915662650603) internal successors, (203), 166 states have internal predecessors, (203), 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) [2023-12-21 17:40:13,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 203 transitions. [2023-12-21 17:40:13,761 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 203 transitions. Word has length 72 [2023-12-21 17:40:13,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:40:13,762 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 203 transitions. [2023-12-21 17:40:13,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.816326530612245) internal successors, (138), 49 states have internal predecessors, (138), 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) [2023-12-21 17:40:13,762 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 203 transitions. [2023-12-21 17:40:13,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-21 17:40:13,762 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:40:13,762 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:40:13,768 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 (27)] Forceful destruction successful, exit code 0 [2023-12-21 17:40:13,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /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 [2023-12-21 17:40:13,966 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:40:13,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:40:13,966 INFO L85 PathProgramCache]: Analyzing trace with hash 851732943, now seen corresponding path program 21 times [2023-12-21 17:40:13,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:40:13,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [589539004] [2023-12-21 17:40:13,967 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 17:40:13,967 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 [2023-12-21 17:40:13,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:40:13,968 INFO L229 MonitoredProcess]: Starting monitored process 28 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) [2023-12-21 17:40:13,968 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 (28)] Waiting until timeout for monitored process [2023-12-21 17:40:14,121 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2023-12-21 17:40:14,121 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:40:14,125 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-21 17:40:14,128 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:40:14,772 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 11 proven. 352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:40:14,772 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:40:17,550 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 21 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:40:17,550 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:40:17,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [589539004] [2023-12-21 17:40:17,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [589539004] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:40:17,550 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:40:17,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 58 [2023-12-21 17:40:17,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420796767] [2023-12-21 17:40:17,550 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:40:17,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-12-21 17:40:17,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:40:17,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-12-21 17:40:17,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=642, Invalid=2664, Unknown=0, NotChecked=0, Total=3306 [2023-12-21 17:40:17,552 INFO L87 Difference]: Start difference. First operand 167 states and 203 transitions. Second operand has 58 states, 58 states have (on average 2.5344827586206895) internal successors, (147), 58 states have internal predecessors, (147), 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) [2023-12-21 17:40:29,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:40:29,029 INFO L93 Difference]: Finished difference Result 341 states and 389 transitions. [2023-12-21 17:40:29,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2023-12-21 17:40:29,030 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 2.5344827586206895) internal successors, (147), 58 states have internal predecessors, (147), 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 75 [2023-12-21 17:40:29,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:40:29,030 INFO L225 Difference]: With dead ends: 341 [2023-12-21 17:40:29,030 INFO L226 Difference]: Without dead ends: 301 [2023-12-21 17:40:29,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2579 ImplicationChecksByTransitivity, 12.7s TimeCoverageRelationStatistics Valid=2156, Invalid=6964, Unknown=0, NotChecked=0, Total=9120 [2023-12-21 17:40:29,031 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 508 mSDsluCounter, 1176 mSDsCounter, 0 mSdLazyCounter, 1548 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 508 SdHoareTripleChecker+Valid, 1236 SdHoareTripleChecker+Invalid, 1663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-21 17:40:29,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [508 Valid, 1236 Invalid, 1663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1548 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-21 17:40:29,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2023-12-21 17:40:29,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 204. [2023-12-21 17:40:29,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 203 states have (on average 1.2660098522167487) internal successors, (257), 203 states have internal predecessors, (257), 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) [2023-12-21 17:40:29,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 257 transitions. [2023-12-21 17:40:29,082 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 257 transitions. Word has length 75 [2023-12-21 17:40:29,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:40:29,082 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 257 transitions. [2023-12-21 17:40:29,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 2.5344827586206895) internal successors, (147), 58 states have internal predecessors, (147), 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) [2023-12-21 17:40:29,082 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 257 transitions. [2023-12-21 17:40:29,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-21 17:40:29,083 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:40:29,083 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:40:29,089 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 (28)] Forceful destruction successful, exit code 0 [2023-12-21 17:40:29,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /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 [2023-12-21 17:40:29,289 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:40:29,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:40:29,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1290612719, now seen corresponding path program 22 times [2023-12-21 17:40:29,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:40:29,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [662683822] [2023-12-21 17:40:29,290 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 17:40:29,290 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 [2023-12-21 17:40:29,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:40:29,291 INFO L229 MonitoredProcess]: Starting monitored process 29 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) [2023-12-21 17:40:29,296 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 (29)] Waiting until timeout for monitored process [2023-12-21 17:40:29,391 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 17:40:29,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:40:29,396 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-21 17:40:29,404 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:40:29,498 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-21 17:40:29,886 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 0 proven. 397 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:40:29,886 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:40:30,526 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2023-12-21 17:40:30,527 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-12-21 17:40:30,952 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 0 proven. 397 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:40:30,952 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:40:30,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [662683822] [2023-12-21 17:40:30,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [662683822] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:40:30,953 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:40:30,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 53 [2023-12-21 17:40:30,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766319131] [2023-12-21 17:40:30,953 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:40:30,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-12-21 17:40:30,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:40:30,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-12-21 17:40:30,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=2592, Unknown=0, NotChecked=0, Total=2756 [2023-12-21 17:40:30,954 INFO L87 Difference]: Start difference. First operand 204 states and 257 transitions. Second operand has 53 states, 53 states have (on average 2.830188679245283) internal successors, (150), 53 states have internal predecessors, (150), 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) [2023-12-21 17:40:33,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:40:33,579 INFO L93 Difference]: Finished difference Result 289 states and 346 transitions. [2023-12-21 17:40:33,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2023-12-21 17:40:33,579 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.830188679245283) internal successors, (150), 53 states have internal predecessors, (150), 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 78 [2023-12-21 17:40:33,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:40:33,580 INFO L225 Difference]: With dead ends: 289 [2023-12-21 17:40:33,580 INFO L226 Difference]: Without dead ends: 287 [2023-12-21 17:40:33,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1775 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=410, Invalid=7600, Unknown=0, NotChecked=0, Total=8010 [2023-12-21 17:40:33,581 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 78 mSDsluCounter, 1360 mSDsCounter, 0 mSdLazyCounter, 2503 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 1403 SdHoareTripleChecker+Invalid, 2560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-21 17:40:33,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 1403 Invalid, 2560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 2503 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-21 17:40:33,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2023-12-21 17:40:33,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 207. [2023-12-21 17:40:33,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.2621359223300972) internal successors, (260), 206 states have internal predecessors, (260), 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) [2023-12-21 17:40:33,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 260 transitions. [2023-12-21 17:40:33,639 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 260 transitions. Word has length 78 [2023-12-21 17:40:33,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:40:33,640 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 260 transitions. [2023-12-21 17:40:33,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.830188679245283) internal successors, (150), 53 states have internal predecessors, (150), 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) [2023-12-21 17:40:33,640 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 260 transitions. [2023-12-21 17:40:33,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-21 17:40:33,640 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:40:33,640 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:40:33,646 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 (29)] Forceful destruction successful, exit code 0 [2023-12-21 17:40:33,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /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 [2023-12-21 17:40:33,844 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:40:33,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:40:33,844 INFO L85 PathProgramCache]: Analyzing trace with hash 101383218, now seen corresponding path program 23 times [2023-12-21 17:40:33,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:40:33,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [929132209] [2023-12-21 17:40:33,845 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 17:40:33,845 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 [2023-12-21 17:40:33,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:40:33,846 INFO L229 MonitoredProcess]: Starting monitored process 30 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) [2023-12-21 17:40:33,846 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 (30)] Waiting until timeout for monitored process [2023-12-21 17:40:34,009 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2023-12-21 17:40:34,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:40:34,014 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-21 17:40:34,016 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:40:34,747 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 12 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:40:34,747 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:40:36,930 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 24 proven. 408 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:40:36,931 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:40:36,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [929132209] [2023-12-21 17:40:36,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [929132209] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:40:36,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:40:36,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 30] total 60 [2023-12-21 17:40:36,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615930299] [2023-12-21 17:40:36,931 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:40:36,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2023-12-21 17:40:36,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:40:36,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2023-12-21 17:40:36,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=600, Invalid=2940, Unknown=0, NotChecked=0, Total=3540 [2023-12-21 17:40:36,932 INFO L87 Difference]: Start difference. First operand 207 states and 260 transitions. Second operand has 60 states, 60 states have (on average 2.65) internal successors, (159), 60 states have internal predecessors, (159), 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) [2023-12-21 17:40:38,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:40:38,381 INFO L93 Difference]: Finished difference Result 329 states and 386 transitions. [2023-12-21 17:40:38,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-21 17:40:38,382 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 2.65) internal successors, (159), 60 states have internal predecessors, (159), 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 81 [2023-12-21 17:40:38,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:40:38,383 INFO L225 Difference]: With dead ends: 329 [2023-12-21 17:40:38,383 INFO L226 Difference]: Without dead ends: 286 [2023-12-21 17:40:38,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1334 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=678, Invalid=3354, Unknown=0, NotChecked=0, Total=4032 [2023-12-21 17:40:38,384 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 269 mSDsluCounter, 1133 mSDsCounter, 0 mSdLazyCounter, 2211 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 1174 SdHoareTripleChecker+Invalid, 2290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 2211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-21 17:40:38,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 1174 Invalid, 2290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 2211 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-21 17:40:38,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2023-12-21 17:40:38,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 207. [2023-12-21 17:40:38,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.2572815533980584) internal successors, (259), 206 states have internal predecessors, (259), 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) [2023-12-21 17:40:38,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 259 transitions. [2023-12-21 17:40:38,442 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 259 transitions. Word has length 81 [2023-12-21 17:40:38,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:40:38,442 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 259 transitions. [2023-12-21 17:40:38,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 2.65) internal successors, (159), 60 states have internal predecessors, (159), 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) [2023-12-21 17:40:38,442 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 259 transitions. [2023-12-21 17:40:38,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-21 17:40:38,442 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:40:38,442 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:40:38,446 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 (30)] Forceful destruction successful, exit code 0 [2023-12-21 17:40:38,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /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 [2023-12-21 17:40:38,646 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:40:38,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:40:38,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1865504174, now seen corresponding path program 24 times [2023-12-21 17:40:38,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:40:38,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [646024701] [2023-12-21 17:40:38,647 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 17:40:38,647 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 [2023-12-21 17:40:38,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:40:38,648 INFO L229 MonitoredProcess]: Starting monitored process 31 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) [2023-12-21 17:40:38,652 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 (31)] Waiting until timeout for monitored process [2023-12-21 17:40:38,839 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2023-12-21 17:40:38,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:40:38,844 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-21 17:40:38,852 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:40:39,033 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-21 17:40:39,471 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:40:39,471 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:40:40,150 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2023-12-21 17:40:40,151 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-12-21 17:40:40,628 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:40:40,628 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:40:40,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [646024701] [2023-12-21 17:40:40,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [646024701] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:40:40,628 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:40:40,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 58 [2023-12-21 17:40:40,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766159659] [2023-12-21 17:40:40,628 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:40:40,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-12-21 17:40:40,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:40:40,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-12-21 17:40:40,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=3113, Unknown=0, NotChecked=0, Total=3306 [2023-12-21 17:40:40,630 INFO L87 Difference]: Start difference. First operand 207 states and 259 transitions. Second operand has 58 states, 58 states have (on average 2.8275862068965516) internal successors, (164), 58 states have internal predecessors, (164), 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) [2023-12-21 17:40:43,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:40:43,019 INFO L93 Difference]: Finished difference Result 297 states and 353 transitions. [2023-12-21 17:40:43,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2023-12-21 17:40:43,019 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 2.8275862068965516) internal successors, (164), 58 states have internal predecessors, (164), 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 84 [2023-12-21 17:40:43,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:40:43,020 INFO L225 Difference]: With dead ends: 297 [2023-12-21 17:40:43,020 INFO L226 Difference]: Without dead ends: 295 [2023-12-21 17:40:43,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2119 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=461, Invalid=9045, Unknown=0, NotChecked=0, Total=9506 [2023-12-21 17:40:43,021 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 77 mSDsluCounter, 1456 mSDsCounter, 0 mSdLazyCounter, 2611 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 1502 SdHoareTripleChecker+Invalid, 2668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-21 17:40:43,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 1502 Invalid, 2668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 2611 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-21 17:40:43,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2023-12-21 17:40:43,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 210. [2023-12-21 17:40:43,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 209 states have (on average 1.2535885167464116) internal successors, (262), 209 states have internal predecessors, (262), 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) [2023-12-21 17:40:43,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 262 transitions. [2023-12-21 17:40:43,084 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 262 transitions. Word has length 84 [2023-12-21 17:40:43,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:40:43,085 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 262 transitions. [2023-12-21 17:40:43,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 2.8275862068965516) internal successors, (164), 58 states have internal predecessors, (164), 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) [2023-12-21 17:40:43,085 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 262 transitions. [2023-12-21 17:40:43,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-21 17:40:43,085 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:40:43,085 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:40:43,089 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 (31)] Forceful destruction successful, exit code 0 [2023-12-21 17:40:43,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /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 [2023-12-21 17:40:43,289 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:40:43,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:40:43,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1647067887, now seen corresponding path program 25 times [2023-12-21 17:40:43,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:40:43,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1751996596] [2023-12-21 17:40:43,290 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 17:40:43,290 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 [2023-12-21 17:40:43,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:40:43,291 INFO L229 MonitoredProcess]: Starting monitored process 32 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) [2023-12-21 17:40:43,291 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 (32)] Waiting until timeout for monitored process [2023-12-21 17:40:43,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 17:40:43,399 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-21 17:40:43,400 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:40:44,255 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 13 proven. 494 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:40:44,255 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:40:47,468 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 13 proven. 494 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:40:47,469 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:40:47,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1751996596] [2023-12-21 17:40:47,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1751996596] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:40:47,469 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:40:47,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 32] total 65 [2023-12-21 17:40:47,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117439681] [2023-12-21 17:40:47,469 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:40:47,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2023-12-21 17:40:47,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:40:47,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2023-12-21 17:40:47,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=770, Invalid=3390, Unknown=0, NotChecked=0, Total=4160 [2023-12-21 17:40:47,470 INFO L87 Difference]: Start difference. First operand 210 states and 262 transitions. Second operand has 65 states, 65 states have (on average 2.6307692307692307) internal successors, (171), 65 states have internal predecessors, (171), 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) [2023-12-21 17:40:48,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:40:48,944 INFO L93 Difference]: Finished difference Result 340 states and 396 transitions. [2023-12-21 17:40:48,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-12-21 17:40:48,946 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 2.6307692307692307) internal successors, (171), 65 states have internal predecessors, (171), 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 87 [2023-12-21 17:40:48,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:40:48,946 INFO L225 Difference]: With dead ends: 340 [2023-12-21 17:40:48,947 INFO L226 Difference]: Without dead ends: 294 [2023-12-21 17:40:48,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1461 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=827, Invalid=3729, Unknown=0, NotChecked=0, Total=4556 [2023-12-21 17:40:48,947 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 328 mSDsluCounter, 1085 mSDsCounter, 0 mSdLazyCounter, 2138 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 1129 SdHoareTripleChecker+Invalid, 2220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 2138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-21 17:40:48,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 1129 Invalid, 2220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 2138 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-21 17:40:48,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2023-12-21 17:40:49,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 210. [2023-12-21 17:40:49,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 209 states have (on average 1.2488038277511961) internal successors, (261), 209 states have internal predecessors, (261), 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) [2023-12-21 17:40:49,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 261 transitions. [2023-12-21 17:40:49,007 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 261 transitions. Word has length 87 [2023-12-21 17:40:49,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:40:49,007 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 261 transitions. [2023-12-21 17:40:49,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 2.6307692307692307) internal successors, (171), 65 states have internal predecessors, (171), 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) [2023-12-21 17:40:49,007 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 261 transitions. [2023-12-21 17:40:49,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-21 17:40:49,008 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:40:49,008 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:40:49,012 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 (32)] Forceful destruction successful, exit code 0 [2023-12-21 17:40:49,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /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 [2023-12-21 17:40:49,212 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:40:49,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:40:49,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1480795889, now seen corresponding path program 26 times [2023-12-21 17:40:49,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:40:49,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1849329528] [2023-12-21 17:40:49,212 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 17:40:49,212 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 [2023-12-21 17:40:49,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:40:49,213 INFO L229 MonitoredProcess]: Starting monitored process 33 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) [2023-12-21 17:40:49,214 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 (33)] Waiting until timeout for monitored process [2023-12-21 17:40:49,328 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 17:40:49,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:40:49,334 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-21 17:40:49,336 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:40:49,448 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-21 17:40:49,957 INFO L134 CoverageAnalysis]: Checked inductivity of 547 backedges. 0 proven. 547 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:40:49,957 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:40:50,794 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2023-12-21 17:40:50,796 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-12-21 17:40:51,395 INFO L134 CoverageAnalysis]: Checked inductivity of 547 backedges. 0 proven. 547 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:40:51,396 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:40:51,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1849329528] [2023-12-21 17:40:51,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1849329528] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:40:51,396 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:40:51,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 61 [2023-12-21 17:40:51,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125674050] [2023-12-21 17:40:51,396 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:40:51,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2023-12-21 17:40:51,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:40:51,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2023-12-21 17:40:51,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=3470, Unknown=0, NotChecked=0, Total=3660 [2023-12-21 17:40:51,397 INFO L87 Difference]: Start difference. First operand 210 states and 261 transitions. Second operand has 61 states, 61 states have (on average 2.8524590163934427) internal successors, (174), 61 states have internal predecessors, (174), 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) [2023-12-21 17:40:54,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:40:54,870 INFO L93 Difference]: Finished difference Result 305 states and 360 transitions. [2023-12-21 17:40:54,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2023-12-21 17:40:54,870 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 2.8524590163934427) internal successors, (174), 61 states have internal predecessors, (174), 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 90 [2023-12-21 17:40:54,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:40:54,871 INFO L225 Difference]: With dead ends: 305 [2023-12-21 17:40:54,871 INFO L226 Difference]: Without dead ends: 303 [2023-12-21 17:40:54,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2407 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=476, Invalid=10236, Unknown=0, NotChecked=0, Total=10712 [2023-12-21 17:40:54,872 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 96 mSDsluCounter, 1747 mSDsCounter, 0 mSdLazyCounter, 3205 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 1796 SdHoareTripleChecker+Invalid, 3273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 3205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-21 17:40:54,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 1796 Invalid, 3273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 3205 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-21 17:40:54,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2023-12-21 17:40:54,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 213. [2023-12-21 17:40:54,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 212 states have (on average 1.2452830188679245) internal successors, (264), 212 states have internal predecessors, (264), 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) [2023-12-21 17:40:54,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 264 transitions. [2023-12-21 17:40:54,935 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 264 transitions. Word has length 90 [2023-12-21 17:40:54,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:40:54,936 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 264 transitions. [2023-12-21 17:40:54,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 2.8524590163934427) internal successors, (174), 61 states have internal predecessors, (174), 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) [2023-12-21 17:40:54,936 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 264 transitions. [2023-12-21 17:40:54,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-21 17:40:54,936 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:40:54,936 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:40:54,947 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 (33)] Forceful destruction successful, exit code 0 [2023-12-21 17:40:55,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /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 [2023-12-21 17:40:55,141 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:40:55,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:40:55,141 INFO L85 PathProgramCache]: Analyzing trace with hash -776126702, now seen corresponding path program 27 times [2023-12-21 17:40:55,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:40:55,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [863932979] [2023-12-21 17:40:55,141 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 17:40:55,142 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 [2023-12-21 17:40:55,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:40:55,142 INFO L229 MonitoredProcess]: Starting monitored process 34 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) [2023-12-21 17:40:55,143 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 (34)] Waiting until timeout for monitored process [2023-12-21 17:40:55,391 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2023-12-21 17:40:55,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:40:55,397 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 39 conjunts are in the unsatisfiable core [2023-12-21 17:40:55,399 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:40:56,316 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 14 proven. 574 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:40:56,316 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:40:59,981 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 14 proven. 574 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:40:59,981 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:40:59,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [863932979] [2023-12-21 17:40:59,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [863932979] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:40:59,982 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:40:59,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 35] total 69 [2023-12-21 17:40:59,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663765664] [2023-12-21 17:40:59,982 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:40:59,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2023-12-21 17:40:59,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:40:59,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2023-12-21 17:40:59,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=884, Invalid=3808, Unknown=0, NotChecked=0, Total=4692 [2023-12-21 17:40:59,983 INFO L87 Difference]: Start difference. First operand 213 states and 264 transitions. Second operand has 69 states, 69 states have (on average 2.652173913043478) internal successors, (183), 69 states have internal predecessors, (183), 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) [2023-12-21 17:41:21,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:41:21,288 INFO L93 Difference]: Finished difference Result 431 states and 492 transitions. [2023-12-21 17:41:21,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2023-12-21 17:41:21,288 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 2.652173913043478) internal successors, (183), 69 states have internal predecessors, (183), 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 93 [2023-12-21 17:41:21,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:41:21,289 INFO L225 Difference]: With dead ends: 431 [2023-12-21 17:41:21,289 INFO L226 Difference]: Without dead ends: 382 [2023-12-21 17:41:21,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3864 ImplicationChecksByTransitivity, 22.7s TimeCoverageRelationStatistics Valid=3164, Invalid=10176, Unknown=0, NotChecked=0, Total=13340 [2023-12-21 17:41:21,291 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 685 mSDsluCounter, 2221 mSDsCounter, 0 mSdLazyCounter, 2701 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 685 SdHoareTripleChecker+Valid, 2296 SdHoareTripleChecker+Invalid, 2848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 2701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-21 17:41:21,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [685 Valid, 2296 Invalid, 2848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 2701 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-21 17:41:21,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2023-12-21 17:41:21,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 232. [2023-12-21 17:41:21,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 231 states have (on average 1.2597402597402598) internal successors, (291), 231 states have internal predecessors, (291), 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) [2023-12-21 17:41:21,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 291 transitions. [2023-12-21 17:41:21,373 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 291 transitions. Word has length 93 [2023-12-21 17:41:21,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:41:21,373 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 291 transitions. [2023-12-21 17:41:21,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 2.652173913043478) internal successors, (183), 69 states have internal predecessors, (183), 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) [2023-12-21 17:41:21,373 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 291 transitions. [2023-12-21 17:41:21,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-21 17:41:21,374 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:41:21,374 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:41:21,379 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 (34)] Forceful destruction successful, exit code 0 [2023-12-21 17:41:21,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /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 [2023-12-21 17:41:21,579 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:41:21,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:41:21,579 INFO L85 PathProgramCache]: Analyzing trace with hash 785169714, now seen corresponding path program 28 times [2023-12-21 17:41:21,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:41:21,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [927587918] [2023-12-21 17:41:21,579 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 17:41:21,579 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 [2023-12-21 17:41:21,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:41:21,580 INFO L229 MonitoredProcess]: Starting monitored process 35 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) [2023-12-21 17:41:21,581 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 (35)] Waiting until timeout for monitored process [2023-12-21 17:41:21,723 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 17:41:21,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:41:21,730 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-21 17:41:21,733 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:41:21,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-21 17:41:22,432 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 0 proven. 631 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:41:22,432 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:41:23,353 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2023-12-21 17:41:23,354 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-12-21 17:41:24,007 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 0 proven. 631 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:41:24,008 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:41:24,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [927587918] [2023-12-21 17:41:24,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [927587918] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:41:24,008 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:41:24,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 65 [2023-12-21 17:41:24,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016128] [2023-12-21 17:41:24,008 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:41:24,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2023-12-21 17:41:24,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:41:24,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2023-12-21 17:41:24,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=3957, Unknown=0, NotChecked=0, Total=4160 [2023-12-21 17:41:24,009 INFO L87 Difference]: Start difference. First operand 232 states and 291 transitions. Second operand has 65 states, 65 states have (on average 2.8615384615384616) internal successors, (186), 65 states have internal predecessors, (186), 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) [2023-12-21 17:41:27,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:41:27,995 INFO L93 Difference]: Finished difference Result 364 states and 437 transitions. [2023-12-21 17:41:27,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2023-12-21 17:41:27,996 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 2.8615384615384616) internal successors, (186), 65 states have internal predecessors, (186), 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 96 [2023-12-21 17:41:27,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:41:28,003 INFO L225 Difference]: With dead ends: 364 [2023-12-21 17:41:28,003 INFO L226 Difference]: Without dead ends: 362 [2023-12-21 17:41:28,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2759 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=509, Invalid=11701, Unknown=0, NotChecked=0, Total=12210 [2023-12-21 17:41:28,004 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 94 mSDsluCounter, 1994 mSDsCounter, 0 mSdLazyCounter, 3588 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 2046 SdHoareTripleChecker+Invalid, 3657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-21 17:41:28,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 2046 Invalid, 3657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 3588 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-21 17:41:28,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2023-12-21 17:41:28,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 235. [2023-12-21 17:41:28,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 234 states have (on average 1.2564102564102564) internal successors, (294), 234 states have internal predecessors, (294), 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) [2023-12-21 17:41:28,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 294 transitions. [2023-12-21 17:41:28,100 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 294 transitions. Word has length 96 [2023-12-21 17:41:28,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:41:28,100 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 294 transitions. [2023-12-21 17:41:28,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 2.8615384615384616) internal successors, (186), 65 states have internal predecessors, (186), 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) [2023-12-21 17:41:28,100 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 294 transitions. [2023-12-21 17:41:28,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-21 17:41:28,100 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:41:28,100 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:41:28,106 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 (35)] Forceful destruction successful, exit code 0 [2023-12-21 17:41:28,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /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 [2023-12-21 17:41:28,303 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:41:28,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:41:28,303 INFO L85 PathProgramCache]: Analyzing trace with hash 604161039, now seen corresponding path program 29 times [2023-12-21 17:41:28,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:41:28,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2080482072] [2023-12-21 17:41:28,303 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 17:41:28,303 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 17:41:28,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:41:28,304 INFO L229 MonitoredProcess]: Starting monitored process 36 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) [2023-12-21 17:41:28,305 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 (36)] Waiting until timeout for monitored process [2023-12-21 17:41:28,562 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2023-12-21 17:41:28,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:41:28,570 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-21 17:41:28,571 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:41:29,586 INFO L134 CoverageAnalysis]: Checked inductivity of 675 backedges. 15 proven. 660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:41:29,586 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:41:32,334 INFO L134 CoverageAnalysis]: Checked inductivity of 675 backedges. 15 proven. 660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:41:32,334 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:41:32,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2080482072] [2023-12-21 17:41:32,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2080482072] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:41:32,334 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:41:32,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 35] total 70 [2023-12-21 17:41:32,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897671130] [2023-12-21 17:41:32,334 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:41:32,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2023-12-21 17:41:32,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:41:32,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2023-12-21 17:41:32,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=779, Invalid=4051, Unknown=0, NotChecked=0, Total=4830 [2023-12-21 17:41:32,336 INFO L87 Difference]: Start difference. First operand 235 states and 294 transitions. Second operand has 70 states, 70 states have (on average 2.7857142857142856) internal successors, (195), 70 states have internal predecessors, (195), 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) [2023-12-21 17:41:34,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:41:34,388 INFO L93 Difference]: Finished difference Result 413 states and 486 transitions. [2023-12-21 17:41:34,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-12-21 17:41:34,389 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 2.7857142857142856) internal successors, (195), 70 states have internal predecessors, (195), 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 99 [2023-12-21 17:41:34,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:41:34,390 INFO L225 Difference]: With dead ends: 413 [2023-12-21 17:41:34,390 INFO L226 Difference]: Without dead ends: 361 [2023-12-21 17:41:34,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1668 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=825, Invalid=4431, Unknown=0, NotChecked=0, Total=5256 [2023-12-21 17:41:34,390 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 520 mSDsluCounter, 1729 mSDsCounter, 0 mSdLazyCounter, 3304 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 520 SdHoareTripleChecker+Valid, 1779 SdHoareTripleChecker+Invalid, 3431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 3304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-21 17:41:34,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [520 Valid, 1779 Invalid, 3431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 3304 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-21 17:41:34,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2023-12-21 17:41:34,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 235. [2023-12-21 17:41:34,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 234 states have (on average 1.2521367521367521) internal successors, (293), 234 states have internal predecessors, (293), 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) [2023-12-21 17:41:34,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 293 transitions. [2023-12-21 17:41:34,476 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 293 transitions. Word has length 99 [2023-12-21 17:41:34,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:41:34,476 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 293 transitions. [2023-12-21 17:41:34,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 2.7857142857142856) internal successors, (195), 70 states have internal predecessors, (195), 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) [2023-12-21 17:41:34,477 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 293 transitions. [2023-12-21 17:41:34,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-21 17:41:34,477 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:41:34,477 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:41:34,500 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 (36)] Forceful destruction successful, exit code 0 [2023-12-21 17:41:34,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /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 [2023-12-21 17:41:34,682 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:41:34,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:41:34,683 INFO L85 PathProgramCache]: Analyzing trace with hash 667101743, now seen corresponding path program 30 times [2023-12-21 17:41:34,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:41:34,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [242373137] [2023-12-21 17:41:34,683 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 17:41:34,683 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 [2023-12-21 17:41:34,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:41:34,684 INFO L229 MonitoredProcess]: Starting monitored process 37 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) [2023-12-21 17:41:34,685 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 (37)] Waiting until timeout for monitored process [2023-12-21 17:41:35,022 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2023-12-21 17:41:35,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:41:35,029 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-21 17:41:35,031 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:41:35,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-21 17:41:35,821 INFO L134 CoverageAnalysis]: Checked inductivity of 721 backedges. 0 proven. 721 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:41:35,822 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:41:36,925 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2023-12-21 17:41:36,927 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-12-21 17:41:37,679 INFO L134 CoverageAnalysis]: Checked inductivity of 721 backedges. 0 proven. 721 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:41:37,679 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:41:37,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [242373137] [2023-12-21 17:41:37,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [242373137] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:41:37,679 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:41:37,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 69 [2023-12-21 17:41:37,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196417203] [2023-12-21 17:41:37,679 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:41:37,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2023-12-21 17:41:37,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:41:37,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2023-12-21 17:41:37,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=4476, Unknown=0, NotChecked=0, Total=4692 [2023-12-21 17:41:37,681 INFO L87 Difference]: Start difference. First operand 235 states and 293 transitions. Second operand has 69 states, 69 states have (on average 2.869565217391304) internal successors, (198), 69 states have internal predecessors, (198), 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) [2023-12-21 17:41:42,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:41:42,095 INFO L93 Difference]: Finished difference Result 372 states and 444 transitions. [2023-12-21 17:41:42,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2023-12-21 17:41:42,095 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 2.869565217391304) internal successors, (198), 69 states have internal predecessors, (198), 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 102 [2023-12-21 17:41:42,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:41:42,096 INFO L225 Difference]: With dead ends: 372 [2023-12-21 17:41:42,097 INFO L226 Difference]: Without dead ends: 370 [2023-12-21 17:41:42,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3135 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=542, Invalid=13264, Unknown=0, NotChecked=0, Total=13806 [2023-12-21 17:41:42,097 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 122 mSDsluCounter, 2211 mSDsCounter, 0 mSdLazyCounter, 3944 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 2266 SdHoareTripleChecker+Invalid, 4023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 3944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-21 17:41:42,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 2266 Invalid, 4023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 3944 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-21 17:41:42,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2023-12-21 17:41:42,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 238. [2023-12-21 17:41:42,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 237 states have (on average 1.248945147679325) internal successors, (296), 237 states have internal predecessors, (296), 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) [2023-12-21 17:41:42,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 296 transitions. [2023-12-21 17:41:42,188 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 296 transitions. Word has length 102 [2023-12-21 17:41:42,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:41:42,188 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 296 transitions. [2023-12-21 17:41:42,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 2.869565217391304) internal successors, (198), 69 states have internal predecessors, (198), 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) [2023-12-21 17:41:42,188 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 296 transitions. [2023-12-21 17:41:42,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-21 17:41:42,189 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:41:42,189 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:41:42,194 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 (37)] Forceful destruction successful, exit code 0 [2023-12-21 17:41:42,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /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 [2023-12-21 17:41:42,394 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:41:42,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:41:42,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1771534704, now seen corresponding path program 4 times [2023-12-21 17:41:42,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:41:42,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [694634526] [2023-12-21 17:41:42,395 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 17:41:42,395 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 [2023-12-21 17:41:42,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:41:42,396 INFO L229 MonitoredProcess]: Starting monitored process 38 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) [2023-12-21 17:41:42,397 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 (38)] Waiting until timeout for monitored process [2023-12-21 17:41:42,499 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 17:41:42,499 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:41:42,503 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-21 17:41:42,504 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:41:42,930 INFO L134 CoverageAnalysis]: Checked inductivity of 1426 backedges. 61 proven. 1365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:41:42,930 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:41:44,624 INFO L134 CoverageAnalysis]: Checked inductivity of 1426 backedges. 61 proven. 1365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:41:44,624 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:41:44,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [694634526] [2023-12-21 17:41:44,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [694634526] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:41:44,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:41:44,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 64 [2023-12-21 17:41:44,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662172035] [2023-12-21 17:41:44,625 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:41:44,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2023-12-21 17:41:44,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:41:44,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2023-12-21 17:41:44,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1086, Invalid=2946, Unknown=0, NotChecked=0, Total=4032 [2023-12-21 17:41:44,626 INFO L87 Difference]: Start difference. First operand 238 states and 296 transitions. Second operand has 64 states, 64 states have (on average 3.046875) internal successors, (195), 64 states have internal predecessors, (195), 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) [2023-12-21 17:42:00,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:42:00,796 INFO L93 Difference]: Finished difference Result 830 states and 1008 transitions. [2023-12-21 17:42:00,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2023-12-21 17:42:00,797 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 3.046875) internal successors, (195), 64 states have internal predecessors, (195), 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 102 [2023-12-21 17:42:00,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:42:00,798 INFO L225 Difference]: With dead ends: 830 [2023-12-21 17:42:00,798 INFO L226 Difference]: Without dead ends: 736 [2023-12-21 17:42:00,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 14.0s TimeCoverageRelationStatistics Valid=3006, Invalid=5736, Unknown=0, NotChecked=0, Total=8742 [2023-12-21 17:42:00,799 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 4535 mSDsluCounter, 2945 mSDsCounter, 0 mSdLazyCounter, 6000 mSolverCounterSat, 1701 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4535 SdHoareTripleChecker+Valid, 3057 SdHoareTripleChecker+Invalid, 7701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1701 IncrementalHoareTripleChecker+Valid, 6000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-21 17:42:00,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4535 Valid, 3057 Invalid, 7701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1701 Valid, 6000 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-21 17:42:00,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2023-12-21 17:42:00,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 334. [2023-12-21 17:42:00,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 333 states have (on average 1.2732732732732732) internal successors, (424), 333 states have internal predecessors, (424), 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) [2023-12-21 17:42:00,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 424 transitions. [2023-12-21 17:42:00,901 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 424 transitions. Word has length 102 [2023-12-21 17:42:00,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:42:00,901 INFO L495 AbstractCegarLoop]: Abstraction has 334 states and 424 transitions. [2023-12-21 17:42:00,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 3.046875) internal successors, (195), 64 states have internal predecessors, (195), 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) [2023-12-21 17:42:00,901 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 424 transitions. [2023-12-21 17:42:00,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-21 17:42:00,902 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:42:00,902 INFO L195 NwaCegarLoop]: trace histogram [17, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:42:00,905 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 (38)] Forceful destruction successful, exit code 0 [2023-12-21 17:42:01,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /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 [2023-12-21 17:42:01,102 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:42:01,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:42:01,103 INFO L85 PathProgramCache]: Analyzing trace with hash 819452402, now seen corresponding path program 31 times [2023-12-21 17:42:01,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:42:01,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [173856715] [2023-12-21 17:42:01,103 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 17:42:01,103 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 [2023-12-21 17:42:01,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:42:01,104 INFO L229 MonitoredProcess]: Starting monitored process 39 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) [2023-12-21 17:42:01,105 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 (39)] Waiting until timeout for monitored process [2023-12-21 17:42:01,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 17:42:01,255 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 40 conjunts are in the unsatisfiable core [2023-12-21 17:42:01,256 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:42:02,290 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 16 proven. 752 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:42:02,290 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:42:05,276 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 16 proven. 752 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:42:05,276 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:42:05,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [173856715] [2023-12-21 17:42:05,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [173856715] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:42:05,276 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:42:05,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 37] total 74 [2023-12-21 17:42:05,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447956362] [2023-12-21 17:42:05,276 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:42:05,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2023-12-21 17:42:05,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:42:05,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2023-12-21 17:42:05,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=4541, Unknown=0, NotChecked=0, Total=5402 [2023-12-21 17:42:05,278 INFO L87 Difference]: Start difference. First operand 334 states and 424 transitions. Second operand has 74 states, 74 states have (on average 2.7972972972972974) internal successors, (207), 74 states have internal predecessors, (207), 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) [2023-12-21 17:42:07,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:42:07,708 INFO L93 Difference]: Finished difference Result 520 states and 624 transitions. [2023-12-21 17:42:07,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-12-21 17:42:07,710 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 2.7972972972972974) internal successors, (207), 74 states have internal predecessors, (207), 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 105 [2023-12-21 17:42:07,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:42:07,711 INFO L225 Difference]: With dead ends: 520 [2023-12-21 17:42:07,711 INFO L226 Difference]: Without dead ends: 465 [2023-12-21 17:42:07,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1874 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=909, Invalid=4943, Unknown=0, NotChecked=0, Total=5852 [2023-12-21 17:42:07,712 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 371 mSDsluCounter, 2217 mSDsCounter, 0 mSdLazyCounter, 4109 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 2270 SdHoareTripleChecker+Invalid, 4206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 4109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-21 17:42:07,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 2270 Invalid, 4206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 4109 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-21 17:42:07,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2023-12-21 17:42:07,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 334. [2023-12-21 17:42:07,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 333 states have (on average 1.2702702702702702) internal successors, (423), 333 states have internal predecessors, (423), 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) [2023-12-21 17:42:07,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 423 transitions. [2023-12-21 17:42:07,815 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 423 transitions. Word has length 105 [2023-12-21 17:42:07,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:42:07,815 INFO L495 AbstractCegarLoop]: Abstraction has 334 states and 423 transitions. [2023-12-21 17:42:07,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 2.7972972972972974) internal successors, (207), 74 states have internal predecessors, (207), 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) [2023-12-21 17:42:07,816 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 423 transitions. [2023-12-21 17:42:07,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-21 17:42:07,816 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:42:07,816 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:42:07,821 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 (39)] Forceful destruction successful, exit code 0 [2023-12-21 17:42:08,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /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 [2023-12-21 17:42:08,017 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:42:08,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:42:08,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1124390894, now seen corresponding path program 32 times [2023-12-21 17:42:08,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:42:08,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1329925851] [2023-12-21 17:42:08,017 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 17:42:08,017 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 [2023-12-21 17:42:08,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:42:08,018 INFO L229 MonitoredProcess]: Starting monitored process 40 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) [2023-12-21 17:42:08,019 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 (40)] Waiting until timeout for monitored process [2023-12-21 17:42:08,184 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 17:42:08,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:42:08,191 INFO L262 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 40 conjunts are in the unsatisfiable core [2023-12-21 17:42:08,209 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:42:08,362 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-21 17:42:09,045 INFO L134 CoverageAnalysis]: Checked inductivity of 817 backedges. 0 proven. 817 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:42:09,045 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:42:10,187 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2023-12-21 17:42:10,189 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-12-21 17:42:11,002 INFO L134 CoverageAnalysis]: Checked inductivity of 817 backedges. 0 proven. 817 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:42:11,003 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:42:11,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1329925851] [2023-12-21 17:42:11,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1329925851] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:42:11,003 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:42:11,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 73 [2023-12-21 17:42:11,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393534999] [2023-12-21 17:42:11,003 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:42:11,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2023-12-21 17:42:11,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:42:11,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2023-12-21 17:42:11,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=5027, Unknown=0, NotChecked=0, Total=5256 [2023-12-21 17:42:11,004 INFO L87 Difference]: Start difference. First operand 334 states and 423 transitions. Second operand has 73 states, 73 states have (on average 2.8767123287671232) internal successors, (210), 73 states have internal predecessors, (210), 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) [2023-12-21 17:42:15,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:42:15,866 INFO L93 Difference]: Finished difference Result 476 states and 579 transitions. [2023-12-21 17:42:15,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2023-12-21 17:42:15,866 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 2.8767123287671232) internal successors, (210), 73 states have internal predecessors, (210), 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 108 [2023-12-21 17:42:15,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:42:15,868 INFO L225 Difference]: With dead ends: 476 [2023-12-21 17:42:15,868 INFO L226 Difference]: Without dead ends: 474 [2023-12-21 17:42:15,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3535 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=575, Invalid=14925, Unknown=0, NotChecked=0, Total=15500 [2023-12-21 17:42:15,869 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 122 mSDsluCounter, 2416 mSDsCounter, 0 mSdLazyCounter, 4323 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 2474 SdHoareTripleChecker+Invalid, 4405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 4323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-21 17:42:15,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 2474 Invalid, 4405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 4323 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-21 17:42:15,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2023-12-21 17:42:15,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 337. [2023-12-21 17:42:15,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 336 states have (on average 1.2678571428571428) internal successors, (426), 336 states have internal predecessors, (426), 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) [2023-12-21 17:42:15,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 426 transitions. [2023-12-21 17:42:15,977 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 426 transitions. Word has length 108 [2023-12-21 17:42:15,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:42:15,977 INFO L495 AbstractCegarLoop]: Abstraction has 337 states and 426 transitions. [2023-12-21 17:42:15,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 2.8767123287671232) internal successors, (210), 73 states have internal predecessors, (210), 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) [2023-12-21 17:42:15,977 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 426 transitions. [2023-12-21 17:42:15,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-21 17:42:15,978 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:42:15,978 INFO L195 NwaCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:42:15,982 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 (40)] Forceful destruction successful, exit code 0 [2023-12-21 17:42:16,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /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 [2023-12-21 17:42:16,180 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:42:16,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:42:16,181 INFO L85 PathProgramCache]: Analyzing trace with hash -274076369, now seen corresponding path program 33 times [2023-12-21 17:42:16,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:42:16,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1671643655] [2023-12-21 17:42:16,181 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 17:42:16,181 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 [2023-12-21 17:42:16,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:42:16,182 INFO L229 MonitoredProcess]: Starting monitored process 41 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) [2023-12-21 17:42:16,183 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 (41)] Waiting until timeout for monitored process [2023-12-21 17:42:16,479 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2023-12-21 17:42:16,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:42:16,487 INFO L262 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 43 conjunts are in the unsatisfiable core [2023-12-21 17:42:16,489 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:42:17,659 INFO L134 CoverageAnalysis]: Checked inductivity of 867 backedges. 17 proven. 850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:42:17,660 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:42:22,806 INFO L134 CoverageAnalysis]: Checked inductivity of 867 backedges. 17 proven. 850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:42:22,806 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:42:22,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1671643655] [2023-12-21 17:42:22,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1671643655] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:42:22,807 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:42:22,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 40] total 80 [2023-12-21 17:42:22,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763626410] [2023-12-21 17:42:22,807 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:42:22,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2023-12-21 17:42:22,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:42:22,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2023-12-21 17:42:22,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1148, Invalid=5172, Unknown=0, NotChecked=0, Total=6320 [2023-12-21 17:42:22,808 INFO L87 Difference]: Start difference. First operand 337 states and 426 transitions. Second operand has 80 states, 80 states have (on average 2.7375) internal successors, (219), 80 states have internal predecessors, (219), 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) [2023-12-21 17:42:25,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:42:25,295 INFO L93 Difference]: Finished difference Result 531 states and 634 transitions. [2023-12-21 17:42:25,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-12-21 17:42:25,296 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 2.7375) internal successors, (219), 80 states have internal predecessors, (219), 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 111 [2023-12-21 17:42:25,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:42:25,297 INFO L225 Difference]: With dead ends: 531 [2023-12-21 17:42:25,298 INFO L226 Difference]: Without dead ends: 473 [2023-12-21 17:42:25,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2228 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=1216, Invalid=5590, Unknown=0, NotChecked=0, Total=6806 [2023-12-21 17:42:25,298 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 434 mSDsluCounter, 2064 mSDsCounter, 0 mSdLazyCounter, 3857 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 2120 SdHoareTripleChecker+Invalid, 3972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 3857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-21 17:42:25,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 2120 Invalid, 3972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 3857 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-21 17:42:25,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2023-12-21 17:42:25,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 337. [2023-12-21 17:42:25,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 336 states have (on average 1.2648809523809523) internal successors, (425), 336 states have internal predecessors, (425), 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) [2023-12-21 17:42:25,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 425 transitions. [2023-12-21 17:42:25,408 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 425 transitions. Word has length 111 [2023-12-21 17:42:25,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:42:25,408 INFO L495 AbstractCegarLoop]: Abstraction has 337 states and 425 transitions. [2023-12-21 17:42:25,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 2.7375) internal successors, (219), 80 states have internal predecessors, (219), 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) [2023-12-21 17:42:25,408 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 425 transitions. [2023-12-21 17:42:25,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-21 17:42:25,408 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:42:25,409 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:42:25,416 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 (41)] Forceful destruction successful, exit code 0 [2023-12-21 17:42:25,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /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 [2023-12-21 17:42:25,614 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:42:25,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:42:25,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1482826575, now seen corresponding path program 34 times [2023-12-21 17:42:25,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:42:25,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1800076175] [2023-12-21 17:42:25,615 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 17:42:25,615 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 [2023-12-21 17:42:25,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:42:25,616 INFO L229 MonitoredProcess]: Starting monitored process 42 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) [2023-12-21 17:42:25,616 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 (42)] Waiting until timeout for monitored process [2023-12-21 17:42:25,768 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 17:42:25,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:42:25,775 INFO L262 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-21 17:42:25,777 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:42:25,973 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-21 17:42:26,715 INFO L134 CoverageAnalysis]: Checked inductivity of 919 backedges. 0 proven. 919 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:42:26,715 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:42:28,020 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2023-12-21 17:42:28,022 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-12-21 17:42:28,945 INFO L134 CoverageAnalysis]: Checked inductivity of 919 backedges. 0 proven. 919 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:42:28,945 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:42:28,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1800076175] [2023-12-21 17:42:28,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1800076175] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:42:28,945 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:42:28,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 77 [2023-12-21 17:42:28,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726458050] [2023-12-21 17:42:28,945 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:42:28,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2023-12-21 17:42:28,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:42:28,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2023-12-21 17:42:28,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=5610, Unknown=0, NotChecked=0, Total=5852 [2023-12-21 17:42:28,947 INFO L87 Difference]: Start difference. First operand 337 states and 425 transitions. Second operand has 77 states, 77 states have (on average 2.883116883116883) internal successors, (222), 77 states have internal predecessors, (222), 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) [2023-12-21 17:42:34,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:42:34,406 INFO L93 Difference]: Finished difference Result 484 states and 586 transitions. [2023-12-21 17:42:34,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2023-12-21 17:42:34,407 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 2.883116883116883) internal successors, (222), 77 states have internal predecessors, (222), 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 114 [2023-12-21 17:42:34,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:42:34,408 INFO L225 Difference]: With dead ends: 484 [2023-12-21 17:42:34,408 INFO L226 Difference]: Without dead ends: 482 [2023-12-21 17:42:34,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3959 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=608, Invalid=16684, Unknown=0, NotChecked=0, Total=17292 [2023-12-21 17:42:34,409 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 126 mSDsluCounter, 2771 mSDsCounter, 0 mSdLazyCounter, 4985 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 2832 SdHoareTripleChecker+Invalid, 5071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 4985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-21 17:42:34,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 2832 Invalid, 5071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 4985 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-21 17:42:34,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2023-12-21 17:42:34,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 340. [2023-12-21 17:42:34,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 339 states have (on average 1.2625368731563422) internal successors, (428), 339 states have internal predecessors, (428), 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) [2023-12-21 17:42:34,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 428 transitions. [2023-12-21 17:42:34,525 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 428 transitions. Word has length 114 [2023-12-21 17:42:34,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:42:34,525 INFO L495 AbstractCegarLoop]: Abstraction has 340 states and 428 transitions. [2023-12-21 17:42:34,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 2.883116883116883) internal successors, (222), 77 states have internal predecessors, (222), 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) [2023-12-21 17:42:34,526 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 428 transitions. [2023-12-21 17:42:34,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-21 17:42:34,526 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:42:34,526 INFO L195 NwaCegarLoop]: trace histogram [19, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:42:34,533 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 (42)] Forceful destruction successful, exit code 0 [2023-12-21 17:42:34,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /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 [2023-12-21 17:42:34,731 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:42:34,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:42:34,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1152961746, now seen corresponding path program 35 times [2023-12-21 17:42:34,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:42:34,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1866059028] [2023-12-21 17:42:34,731 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 17:42:34,731 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 [2023-12-21 17:42:34,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:42:34,735 INFO L229 MonitoredProcess]: Starting monitored process 43 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) [2023-12-21 17:42:34,735 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 (43)] Waiting until timeout for monitored process [2023-12-21 17:42:35,019 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2023-12-21 17:42:35,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:42:35,027 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 46 conjunts are in the unsatisfiable core [2023-12-21 17:42:35,029 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:42:36,388 INFO L134 CoverageAnalysis]: Checked inductivity of 972 backedges. 18 proven. 954 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:42:36,388 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:42:42,018 INFO L134 CoverageAnalysis]: Checked inductivity of 972 backedges. 18 proven. 954 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:42:42,018 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:42:42,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1866059028] [2023-12-21 17:42:42,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1866059028] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:42:42,019 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:42:42,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 42] total 85 [2023-12-21 17:42:42,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081906937] [2023-12-21 17:42:42,019 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:42:42,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2023-12-21 17:42:42,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:42:42,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2023-12-21 17:42:42,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1267, Invalid=5873, Unknown=0, NotChecked=0, Total=7140 [2023-12-21 17:42:42,020 INFO L87 Difference]: Start difference. First operand 340 states and 428 transitions. Second operand has 85 states, 85 states have (on average 2.7176470588235295) internal successors, (231), 85 states have internal predecessors, (231), 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) [2023-12-21 17:42:44,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:42:44,515 INFO L93 Difference]: Finished difference Result 542 states and 644 transitions. [2023-12-21 17:42:44,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-12-21 17:42:44,517 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 2.7176470588235295) internal successors, (231), 85 states have internal predecessors, (231), 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 117 [2023-12-21 17:42:44,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:42:44,518 INFO L225 Difference]: With dead ends: 542 [2023-12-21 17:42:44,518 INFO L226 Difference]: Without dead ends: 481 [2023-12-21 17:42:44,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2535 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=1339, Invalid=6317, Unknown=0, NotChecked=0, Total=7656 [2023-12-21 17:42:44,519 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 595 mSDsluCounter, 1974 mSDsCounter, 0 mSdLazyCounter, 3725 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 595 SdHoareTripleChecker+Valid, 2033 SdHoareTripleChecker+Invalid, 3885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 3725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-21 17:42:44,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [595 Valid, 2033 Invalid, 3885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 3725 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-21 17:42:44,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2023-12-21 17:42:44,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 340. [2023-12-21 17:42:44,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 339 states have (on average 1.2595870206489677) internal successors, (427), 339 states have internal predecessors, (427), 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) [2023-12-21 17:42:44,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 427 transitions. [2023-12-21 17:42:44,635 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 427 transitions. Word has length 117 [2023-12-21 17:42:44,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:42:44,635 INFO L495 AbstractCegarLoop]: Abstraction has 340 states and 427 transitions. [2023-12-21 17:42:44,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 2.7176470588235295) internal successors, (231), 85 states have internal predecessors, (231), 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) [2023-12-21 17:42:44,635 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 427 transitions. [2023-12-21 17:42:44,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-21 17:42:44,636 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:42:44,636 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 19, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:42:44,640 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 (43)] Forceful destruction successful, exit code 0 [2023-12-21 17:42:44,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /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 [2023-12-21 17:42:44,836 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:42:44,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:42:44,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1891101426, now seen corresponding path program 36 times [2023-12-21 17:42:44,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:42:44,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1597765416] [2023-12-21 17:42:44,837 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 17:42:44,837 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 [2023-12-21 17:42:44,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:42:44,838 INFO L229 MonitoredProcess]: Starting monitored process 44 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) [2023-12-21 17:42:44,839 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 (44)] Waiting until timeout for monitored process [2023-12-21 17:42:45,225 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 20 check-sat command(s) [2023-12-21 17:42:45,225 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:42:45,234 INFO L262 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 44 conjunts are in the unsatisfiable core [2023-12-21 17:42:45,236 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:42:45,414 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-21 17:42:46,210 INFO L134 CoverageAnalysis]: Checked inductivity of 1027 backedges. 0 proven. 1027 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:42:46,211 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:42:47,630 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2023-12-21 17:42:47,631 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-12-21 17:42:48,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1027 backedges. 0 proven. 1027 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:42:48,634 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:42:48,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1597765416] [2023-12-21 17:42:48,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1597765416] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:42:48,635 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:42:48,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 81 [2023-12-21 17:42:48,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89189803] [2023-12-21 17:42:48,635 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:42:48,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2023-12-21 17:42:48,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:42:48,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2023-12-21 17:42:48,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=6225, Unknown=0, NotChecked=0, Total=6480 [2023-12-21 17:42:48,637 INFO L87 Difference]: Start difference. First operand 340 states and 427 transitions. Second operand has 81 states, 81 states have (on average 2.888888888888889) internal successors, (234), 81 states have internal predecessors, (234), 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) [2023-12-21 17:42:54,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:42:54,800 INFO L93 Difference]: Finished difference Result 492 states and 593 transitions. [2023-12-21 17:42:54,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2023-12-21 17:42:54,800 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 2.888888888888889) internal successors, (234), 81 states have internal predecessors, (234), 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 [2023-12-21 17:42:54,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:42:54,802 INFO L225 Difference]: With dead ends: 492 [2023-12-21 17:42:54,802 INFO L226 Difference]: Without dead ends: 490 [2023-12-21 17:42:54,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4407 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=641, Invalid=18541, Unknown=0, NotChecked=0, Total=19182 [2023-12-21 17:42:54,803 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 110 mSDsluCounter, 3360 mSDsCounter, 0 mSdLazyCounter, 5926 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 3424 SdHoareTripleChecker+Invalid, 6011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 5926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-21 17:42:54,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 3424 Invalid, 6011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 5926 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-21 17:42:54,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2023-12-21 17:42:54,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 343. [2023-12-21 17:42:54,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 342 states have (on average 1.2573099415204678) internal successors, (430), 342 states have internal predecessors, (430), 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) [2023-12-21 17:42:54,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 430 transitions. [2023-12-21 17:42:54,927 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 430 transitions. Word has length 120 [2023-12-21 17:42:54,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:42:54,927 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 430 transitions. [2023-12-21 17:42:54,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 2.888888888888889) internal successors, (234), 81 states have internal predecessors, (234), 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) [2023-12-21 17:42:54,927 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 430 transitions. [2023-12-21 17:42:54,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-21 17:42:54,927 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:42:54,928 INFO L195 NwaCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:42:54,932 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 (44)] Forceful destruction successful, exit code 0 [2023-12-21 17:42:55,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /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 [2023-12-21 17:42:55,132 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:42:55,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:42:55,132 INFO L85 PathProgramCache]: Analyzing trace with hash 721665615, now seen corresponding path program 37 times [2023-12-21 17:42:55,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:42:55,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [185592114] [2023-12-21 17:42:55,133 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 17:42:55,133 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 [2023-12-21 17:42:55,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:42:55,134 INFO L229 MonitoredProcess]: Starting monitored process 45 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) [2023-12-21 17:42:55,137 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 (45)] Waiting until timeout for monitored process [2023-12-21 17:42:55,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 17:42:55,383 INFO L262 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 49 conjunts are in the unsatisfiable core [2023-12-21 17:42:55,387 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:42:56,906 INFO L134 CoverageAnalysis]: Checked inductivity of 1083 backedges. 19 proven. 1064 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:42:56,906 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:43:03,353 INFO L134 CoverageAnalysis]: Checked inductivity of 1083 backedges. 19 proven. 1064 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:43:03,354 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:43:03,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [185592114] [2023-12-21 17:43:03,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [185592114] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:43:03,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:43:03,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 44] total 90 [2023-12-21 17:43:03,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840609635] [2023-12-21 17:43:03,354 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:43:03,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2023-12-21 17:43:03,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:43:03,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2023-12-21 17:43:03,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1392, Invalid=6618, Unknown=0, NotChecked=0, Total=8010 [2023-12-21 17:43:03,356 INFO L87 Difference]: Start difference. First operand 343 states and 430 transitions. Second operand has 90 states, 90 states have (on average 2.7) internal successors, (243), 90 states have internal predecessors, (243), 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) [2023-12-21 17:43:06,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:43:06,084 INFO L93 Difference]: Finished difference Result 553 states and 654 transitions. [2023-12-21 17:43:06,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-12-21 17:43:06,086 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 2.7) internal successors, (243), 90 states have internal predecessors, (243), 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 123 [2023-12-21 17:43:06,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:43:06,087 INFO L225 Difference]: With dead ends: 553 [2023-12-21 17:43:06,087 INFO L226 Difference]: Without dead ends: 489 [2023-12-21 17:43:06,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2863 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=1468, Invalid=7088, Unknown=0, NotChecked=0, Total=8556 [2023-12-21 17:43:06,088 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 666 mSDsluCounter, 2104 mSDsCounter, 0 mSdLazyCounter, 4004 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 666 SdHoareTripleChecker+Valid, 2166 SdHoareTripleChecker+Invalid, 4178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 4004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-21 17:43:06,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [666 Valid, 2166 Invalid, 4178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 4004 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-21 17:43:06,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2023-12-21 17:43:06,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 343. [2023-12-21 17:43:06,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 342 states have (on average 1.2543859649122806) internal successors, (429), 342 states have internal predecessors, (429), 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) [2023-12-21 17:43:06,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 429 transitions. [2023-12-21 17:43:06,231 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 429 transitions. Word has length 123 [2023-12-21 17:43:06,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:43:06,231 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 429 transitions. [2023-12-21 17:43:06,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 90 states have (on average 2.7) internal successors, (243), 90 states have internal predecessors, (243), 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) [2023-12-21 17:43:06,232 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 429 transitions. [2023-12-21 17:43:06,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-21 17:43:06,232 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:43:06,232 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:43:06,239 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 (45)] Forceful destruction successful, exit code 0 [2023-12-21 17:43:06,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /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 [2023-12-21 17:43:06,440 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:43:06,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:43:06,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1283734417, now seen corresponding path program 38 times [2023-12-21 17:43:06,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:43:06,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [29195466] [2023-12-21 17:43:06,441 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 17:43:06,441 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 [2023-12-21 17:43:06,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:43:06,442 INFO L229 MonitoredProcess]: Starting monitored process 46 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) [2023-12-21 17:43:06,443 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 (46)] Waiting until timeout for monitored process [2023-12-21 17:43:06,634 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 17:43:06,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:43:06,642 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 46 conjunts are in the unsatisfiable core [2023-12-21 17:43:06,644 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:43:06,838 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-21 17:43:07,709 INFO L134 CoverageAnalysis]: Checked inductivity of 1141 backedges. 0 proven. 1141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:43:07,709 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:43:09,246 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2023-12-21 17:43:09,247 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-12-21 17:43:10,362 INFO L134 CoverageAnalysis]: Checked inductivity of 1141 backedges. 0 proven. 1141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:43:10,362 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:43:10,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [29195466] [2023-12-21 17:43:10,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [29195466] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:43:10,363 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:43:10,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 85 [2023-12-21 17:43:10,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601938230] [2023-12-21 17:43:10,363 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:43:10,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2023-12-21 17:43:10,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:43:10,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2023-12-21 17:43:10,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=6872, Unknown=0, NotChecked=0, Total=7140 [2023-12-21 17:43:10,364 INFO L87 Difference]: Start difference. First operand 343 states and 429 transitions. Second operand has 85 states, 85 states have (on average 2.8941176470588235) internal successors, (246), 85 states have internal predecessors, (246), 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) [2023-12-21 17:43:16,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:43:16,937 INFO L93 Difference]: Finished difference Result 500 states and 600 transitions. [2023-12-21 17:43:16,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2023-12-21 17:43:16,938 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 2.8941176470588235) internal successors, (246), 85 states have internal predecessors, (246), 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 126 [2023-12-21 17:43:16,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:43:16,939 INFO L225 Difference]: With dead ends: 500 [2023-12-21 17:43:16,939 INFO L226 Difference]: Without dead ends: 498 [2023-12-21 17:43:16,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4879 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=674, Invalid=20496, Unknown=0, NotChecked=0, Total=21170 [2023-12-21 17:43:16,940 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 153 mSDsluCounter, 3288 mSDsCounter, 0 mSdLazyCounter, 5807 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 3355 SdHoareTripleChecker+Invalid, 5905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 5807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-21 17:43:16,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 3355 Invalid, 5905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 5807 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-21 17:43:16,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2023-12-21 17:43:17,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 346. [2023-12-21 17:43:17,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 345 states have (on average 1.2521739130434784) internal successors, (432), 345 states have internal predecessors, (432), 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) [2023-12-21 17:43:17,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 432 transitions. [2023-12-21 17:43:17,070 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 432 transitions. Word has length 126 [2023-12-21 17:43:17,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:43:17,070 INFO L495 AbstractCegarLoop]: Abstraction has 346 states and 432 transitions. [2023-12-21 17:43:17,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 2.8941176470588235) internal successors, (246), 85 states have internal predecessors, (246), 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) [2023-12-21 17:43:17,070 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 432 transitions. [2023-12-21 17:43:17,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-21 17:43:17,071 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:43:17,071 INFO L195 NwaCegarLoop]: trace histogram [21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:43:17,076 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 (46)] Ended with exit code 0 [2023-12-21 17:43:17,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /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 [2023-12-21 17:43:17,271 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:43:17,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:43:17,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1338107982, now seen corresponding path program 39 times [2023-12-21 17:43:17,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:43:17,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1472014734] [2023-12-21 17:43:17,272 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 17:43:17,272 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 [2023-12-21 17:43:17,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:43:17,273 INFO L229 MonitoredProcess]: Starting monitored process 47 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) [2023-12-21 17:43:17,274 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 (47)] Waiting until timeout for monitored process [2023-12-21 17:43:17,699 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2023-12-21 17:43:17,700 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:43:17,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 50 conjunts are in the unsatisfiable core [2023-12-21 17:43:17,711 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:43:19,193 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 20 proven. 1180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:43:19,194 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:43:26,083 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 20 proven. 1180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:43:26,083 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:43:26,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1472014734] [2023-12-21 17:43:26,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1472014734] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:43:26,083 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:43:26,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 46] total 93 [2023-12-21 17:43:26,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001811494] [2023-12-21 17:43:26,083 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:43:26,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2023-12-21 17:43:26,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:43:26,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2023-12-21 17:43:26,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1505, Invalid=7051, Unknown=0, NotChecked=0, Total=8556 [2023-12-21 17:43:26,086 INFO L87 Difference]: Start difference. First operand 346 states and 432 transitions. Second operand has 93 states, 93 states have (on average 2.7419354838709675) internal successors, (255), 93 states have internal predecessors, (255), 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) [2023-12-21 17:43:29,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:43:29,015 INFO L93 Difference]: Finished difference Result 564 states and 664 transitions. [2023-12-21 17:43:29,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-12-21 17:43:29,016 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 93 states have (on average 2.7419354838709675) internal successors, (255), 93 states have internal predecessors, (255), 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 129 [2023-12-21 17:43:29,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:43:29,017 INFO L225 Difference]: With dead ends: 564 [2023-12-21 17:43:29,017 INFO L226 Difference]: Without dead ends: 497 [2023-12-21 17:43:29,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3057 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=1583, Invalid=7537, Unknown=0, NotChecked=0, Total=9120 [2023-12-21 17:43:29,018 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 397 mSDsluCounter, 2413 mSDsCounter, 0 mSdLazyCounter, 4494 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 2478 SdHoareTripleChecker+Invalid, 4622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 4494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-21 17:43:29,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [397 Valid, 2478 Invalid, 4622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 4494 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-21 17:43:29,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2023-12-21 17:43:29,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 346. [2023-12-21 17:43:29,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 345 states have (on average 1.2492753623188406) internal successors, (431), 345 states have internal predecessors, (431), 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) [2023-12-21 17:43:29,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 431 transitions. [2023-12-21 17:43:29,145 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 431 transitions. Word has length 129 [2023-12-21 17:43:29,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:43:29,145 INFO L495 AbstractCegarLoop]: Abstraction has 346 states and 431 transitions. [2023-12-21 17:43:29,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 93 states have (on average 2.7419354838709675) internal successors, (255), 93 states have internal predecessors, (255), 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) [2023-12-21 17:43:29,146 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 431 transitions. [2023-12-21 17:43:29,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-21 17:43:29,146 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:43:29,146 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 21, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:43:29,156 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 (47)] Forceful destruction successful, exit code 0 [2023-12-21 17:43:29,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /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 [2023-12-21 17:43:29,347 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:43:29,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:43:29,347 INFO L85 PathProgramCache]: Analyzing trace with hash 14747090, now seen corresponding path program 40 times [2023-12-21 17:43:29,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:43:29,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1574868123] [2023-12-21 17:43:29,347 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 17:43:29,347 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 [2023-12-21 17:43:29,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:43:29,348 INFO L229 MonitoredProcess]: Starting monitored process 48 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) [2023-12-21 17:43:29,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2023-12-21 17:43:29,529 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 17:43:29,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:43:29,538 INFO L262 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-21 17:43:29,540 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:43:29,760 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-21 17:43:30,699 INFO L134 CoverageAnalysis]: Checked inductivity of 1261 backedges. 0 proven. 1261 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:43:30,699 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:43:32,361 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2023-12-21 17:43:32,362 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-12-21 17:43:33,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1261 backedges. 0 proven. 1261 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:43:33,537 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:43:33,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1574868123] [2023-12-21 17:43:33,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1574868123] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:43:33,537 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:43:33,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 89 [2023-12-21 17:43:33,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615732858] [2023-12-21 17:43:33,538 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:43:33,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2023-12-21 17:43:33,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:43:33,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2023-12-21 17:43:33,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=7551, Unknown=0, NotChecked=0, Total=7832 [2023-12-21 17:43:33,539 INFO L87 Difference]: Start difference. First operand 346 states and 431 transitions. Second operand has 89 states, 89 states have (on average 2.898876404494382) internal successors, (258), 89 states have internal predecessors, (258), 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) [2023-12-21 17:43:40,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:43:40,697 INFO L93 Difference]: Finished difference Result 508 states and 607 transitions. [2023-12-21 17:43:40,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2023-12-21 17:43:40,698 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 2.898876404494382) internal successors, (258), 89 states have internal predecessors, (258), 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 132 [2023-12-21 17:43:40,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:43:40,699 INFO L225 Difference]: With dead ends: 508 [2023-12-21 17:43:40,699 INFO L226 Difference]: Without dead ends: 506 [2023-12-21 17:43:40,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5375 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=707, Invalid=22549, Unknown=0, NotChecked=0, Total=23256 [2023-12-21 17:43:40,700 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 142 mSDsluCounter, 3857 mSDsCounter, 0 mSdLazyCounter, 6792 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 3927 SdHoareTripleChecker+Invalid, 6891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 6792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-12-21 17:43:40,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 3927 Invalid, 6891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 6792 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-12-21 17:43:40,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2023-12-21 17:43:40,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 349. [2023-12-21 17:43:40,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 348 states have (on average 1.2471264367816093) internal successors, (434), 348 states have internal predecessors, (434), 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) [2023-12-21 17:43:40,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 434 transitions. [2023-12-21 17:43:40,844 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 434 transitions. Word has length 132 [2023-12-21 17:43:40,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:43:40,844 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 434 transitions. [2023-12-21 17:43:40,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 2.898876404494382) internal successors, (258), 89 states have internal predecessors, (258), 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) [2023-12-21 17:43:40,844 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 434 transitions. [2023-12-21 17:43:40,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-21 17:43:40,845 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:43:40,845 INFO L195 NwaCegarLoop]: trace histogram [22, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:43:40,850 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 (48)] Forceful destruction successful, exit code 0 [2023-12-21 17:43:41,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /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 [2023-12-21 17:43:41,045 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:43:41,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:43:41,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1248999279, now seen corresponding path program 41 times [2023-12-21 17:43:41,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:43:41,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [482636383] [2023-12-21 17:43:41,046 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 17:43:41,046 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 [2023-12-21 17:43:41,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:43:41,047 INFO L229 MonitoredProcess]: Starting monitored process 49 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) [2023-12-21 17:43:41,048 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 (49)] Waiting until timeout for monitored process [2023-12-21 17:43:41,367 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2023-12-21 17:43:41,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:43:41,376 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 52 conjunts are in the unsatisfiable core [2023-12-21 17:43:41,378 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:43:42,920 INFO L134 CoverageAnalysis]: Checked inductivity of 1323 backedges. 21 proven. 1302 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:43:42,920 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:43:50,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1323 backedges. 21 proven. 1302 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:43:50,192 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:43:50,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [482636383] [2023-12-21 17:43:50,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [482636383] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:43:50,192 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:43:50,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 48] total 97 [2023-12-21 17:43:50,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824776698] [2023-12-21 17:43:50,193 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:43:50,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2023-12-21 17:43:50,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:43:50,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2023-12-21 17:43:50,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1630, Invalid=7682, Unknown=0, NotChecked=0, Total=9312 [2023-12-21 17:43:50,194 INFO L87 Difference]: Start difference. First operand 349 states and 434 transitions. Second operand has 97 states, 97 states have (on average 2.752577319587629) internal successors, (267), 97 states have internal predecessors, (267), 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) [2023-12-21 17:43:53,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:43:53,388 INFO L93 Difference]: Finished difference Result 575 states and 674 transitions. [2023-12-21 17:43:53,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-12-21 17:43:53,389 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 2.752577319587629) internal successors, (267), 97 states have internal predecessors, (267), 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 135 [2023-12-21 17:43:53,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:43:53,391 INFO L225 Difference]: With dead ends: 575 [2023-12-21 17:43:53,391 INFO L226 Difference]: Without dead ends: 505 [2023-12-21 17:43:53,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3333 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=1711, Invalid=8189, Unknown=0, NotChecked=0, Total=9900 [2023-12-21 17:43:53,392 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 660 mSDsluCounter, 2650 mSDsCounter, 0 mSdLazyCounter, 4985 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 660 SdHoareTripleChecker+Valid, 2718 SdHoareTripleChecker+Invalid, 5170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 4985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-21 17:43:53,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [660 Valid, 2718 Invalid, 5170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 4985 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-21 17:43:53,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2023-12-21 17:43:53,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 349. [2023-12-21 17:43:53,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 348 states have (on average 1.2442528735632183) internal successors, (433), 348 states have internal predecessors, (433), 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) [2023-12-21 17:43:53,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 433 transitions. [2023-12-21 17:43:53,525 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 433 transitions. Word has length 135 [2023-12-21 17:43:53,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:43:53,526 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 433 transitions. [2023-12-21 17:43:53,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 2.752577319587629) internal successors, (267), 97 states have internal predecessors, (267), 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) [2023-12-21 17:43:53,526 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 433 transitions. [2023-12-21 17:43:53,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-21 17:43:53,526 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:43:53,526 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:43:53,534 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 (49)] Forceful destruction successful, exit code 0 [2023-12-21 17:43:53,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /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 [2023-12-21 17:43:53,727 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:43:53,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:43:53,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1049490033, now seen corresponding path program 42 times [2023-12-21 17:43:53,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:43:53,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [100438165] [2023-12-21 17:43:53,728 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 17:43:53,728 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 [2023-12-21 17:43:53,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:43:53,729 INFO L229 MonitoredProcess]: Starting monitored process 50 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) [2023-12-21 17:43:53,729 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 (50)] Waiting until timeout for monitored process [2023-12-21 17:43:54,201 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 23 check-sat command(s) [2023-12-21 17:43:54,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:43:54,212 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 50 conjunts are in the unsatisfiable core [2023-12-21 17:43:54,214 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:43:54,443 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-21 17:43:55,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1387 backedges. 0 proven. 1387 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:43:55,451 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:43:57,269 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2023-12-21 17:43:57,271 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-12-21 17:43:58,536 INFO L134 CoverageAnalysis]: Checked inductivity of 1387 backedges. 0 proven. 1387 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:43:58,536 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:43:58,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [100438165] [2023-12-21 17:43:58,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [100438165] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:43:58,536 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:43:58,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 93 [2023-12-21 17:43:58,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689815275] [2023-12-21 17:43:58,536 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:43:58,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2023-12-21 17:43:58,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:43:58,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2023-12-21 17:43:58,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=294, Invalid=8262, Unknown=0, NotChecked=0, Total=8556 [2023-12-21 17:43:58,538 INFO L87 Difference]: Start difference. First operand 349 states and 433 transitions. Second operand has 93 states, 93 states have (on average 2.903225806451613) internal successors, (270), 93 states have internal predecessors, (270), 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) [2023-12-21 17:44:06,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:44:06,272 INFO L93 Difference]: Finished difference Result 516 states and 614 transitions. [2023-12-21 17:44:06,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2023-12-21 17:44:06,272 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 93 states have (on average 2.903225806451613) internal successors, (270), 93 states have internal predecessors, (270), 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 138 [2023-12-21 17:44:06,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:44:06,273 INFO L225 Difference]: With dead ends: 516 [2023-12-21 17:44:06,273 INFO L226 Difference]: Without dead ends: 514 [2023-12-21 17:44:06,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5895 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=740, Invalid=24700, Unknown=0, NotChecked=0, Total=25440 [2023-12-21 17:44:06,275 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 150 mSDsluCounter, 4208 mSDsCounter, 0 mSdLazyCounter, 7467 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 4281 SdHoareTripleChecker+Invalid, 7572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 7467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-12-21 17:44:06,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 4281 Invalid, 7572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 7467 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-12-21 17:44:06,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2023-12-21 17:44:06,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 352. [2023-12-21 17:44:06,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 351 states have (on average 1.2421652421652423) internal successors, (436), 351 states have internal predecessors, (436), 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) [2023-12-21 17:44:06,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 436 transitions. [2023-12-21 17:44:06,421 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 436 transitions. Word has length 138 [2023-12-21 17:44:06,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:44:06,421 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 436 transitions. [2023-12-21 17:44:06,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 93 states have (on average 2.903225806451613) internal successors, (270), 93 states have internal predecessors, (270), 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) [2023-12-21 17:44:06,421 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 436 transitions. [2023-12-21 17:44:06,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 17:44:06,422 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:44:06,422 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:44:06,428 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 (50)] Forceful destruction successful, exit code 0 [2023-12-21 17:44:06,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /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 [2023-12-21 17:44:06,623 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:44:06,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:44:06,623 INFO L85 PathProgramCache]: Analyzing trace with hash 2009447058, now seen corresponding path program 43 times [2023-12-21 17:44:06,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:44:06,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1875023939] [2023-12-21 17:44:06,623 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 17:44:06,623 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 [2023-12-21 17:44:06,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:44:06,624 INFO L229 MonitoredProcess]: Starting monitored process 51 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) [2023-12-21 17:44:06,625 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 (51)] Waiting until timeout for monitored process [2023-12-21 17:44:06,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 17:44:06,832 INFO L262 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 55 conjunts are in the unsatisfiable core [2023-12-21 17:44:06,834 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:44:08,565 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 22 proven. 1430 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:44:08,565 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:44:16,566 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 22 proven. 1430 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:44:16,566 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:44:16,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1875023939] [2023-12-21 17:44:16,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1875023939] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:44:16,566 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:44:16,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 50] total 102 [2023-12-21 17:44:16,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051437073] [2023-12-21 17:44:16,566 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:44:16,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2023-12-21 17:44:16,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:44:16,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2023-12-21 17:44:16,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1770, Invalid=8532, Unknown=0, NotChecked=0, Total=10302 [2023-12-21 17:44:16,568 INFO L87 Difference]: Start difference. First operand 352 states and 436 transitions. Second operand has 102 states, 102 states have (on average 2.735294117647059) internal successors, (279), 102 states have internal predecessors, (279), 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) [2023-12-21 17:44:19,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:44:19,801 INFO L93 Difference]: Finished difference Result 586 states and 684 transitions. [2023-12-21 17:44:19,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-12-21 17:44:19,802 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 2.735294117647059) internal successors, (279), 102 states have internal predecessors, (279), 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 141 [2023-12-21 17:44:19,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:44:19,803 INFO L225 Difference]: With dead ends: 586 [2023-12-21 17:44:19,803 INFO L226 Difference]: Without dead ends: 513 [2023-12-21 17:44:19,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3706 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=1855, Invalid=9065, Unknown=0, NotChecked=0, Total=10920 [2023-12-21 17:44:19,804 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 781 mSDsluCounter, 2584 mSDsCounter, 0 mSdLazyCounter, 4871 mSolverCounterSat, 232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 2655 SdHoareTripleChecker+Invalid, 5103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 4871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-21 17:44:19,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [781 Valid, 2655 Invalid, 5103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [232 Valid, 4871 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-21 17:44:19,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2023-12-21 17:44:19,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 352. [2023-12-21 17:44:19,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 351 states have (on average 1.2393162393162394) internal successors, (435), 351 states have internal predecessors, (435), 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) [2023-12-21 17:44:19,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 435 transitions. [2023-12-21 17:44:19,945 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 435 transitions. Word has length 141 [2023-12-21 17:44:19,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:44:19,945 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 435 transitions. [2023-12-21 17:44:19,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 102 states have (on average 2.735294117647059) internal successors, (279), 102 states have internal predecessors, (279), 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) [2023-12-21 17:44:19,945 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 435 transitions. [2023-12-21 17:44:19,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-21 17:44:19,946 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:44:19,946 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 23, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:44:19,951 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 (51)] Forceful destruction successful, exit code 0 [2023-12-21 17:44:20,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /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 [2023-12-21 17:44:20,151 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:44:20,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:44:20,152 INFO L85 PathProgramCache]: Analyzing trace with hash -2049673038, now seen corresponding path program 44 times [2023-12-21 17:44:20,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:44:20,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2076715987] [2023-12-21 17:44:20,152 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 17:44:20,152 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 [2023-12-21 17:44:20,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:44:20,153 INFO L229 MonitoredProcess]: Starting monitored process 52 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) [2023-12-21 17:44:20,154 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 (52)] Waiting until timeout for monitored process [2023-12-21 17:44:20,360 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 17:44:20,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:44:20,369 INFO L262 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 52 conjunts are in the unsatisfiable core [2023-12-21 17:44:20,372 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:44:20,613 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-21 17:44:21,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1519 backedges. 0 proven. 1519 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:44:21,693 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:44:23,623 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2023-12-21 17:44:23,625 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-12-21 17:44:25,005 INFO L134 CoverageAnalysis]: Checked inductivity of 1519 backedges. 0 proven. 1519 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:44:25,006 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:44:25,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2076715987] [2023-12-21 17:44:25,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2076715987] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:44:25,006 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:44:25,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 97 [2023-12-21 17:44:25,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620777581] [2023-12-21 17:44:25,006 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:44:25,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2023-12-21 17:44:25,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:44:25,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2023-12-21 17:44:25,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=307, Invalid=9005, Unknown=0, NotChecked=0, Total=9312 [2023-12-21 17:44:25,008 INFO L87 Difference]: Start difference. First operand 352 states and 435 transitions. Second operand has 97 states, 97 states have (on average 2.9072164948453607) internal successors, (282), 97 states have internal predecessors, (282), 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) [2023-12-21 17:44:32,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:44:32,921 INFO L93 Difference]: Finished difference Result 524 states and 621 transitions. [2023-12-21 17:44:32,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2023-12-21 17:44:32,921 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 2.9072164948453607) internal successors, (282), 97 states have internal predecessors, (282), 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 144 [2023-12-21 17:44:32,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:44:32,922 INFO L225 Difference]: With dead ends: 524 [2023-12-21 17:44:32,922 INFO L226 Difference]: Without dead ends: 522 [2023-12-21 17:44:32,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6439 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=773, Invalid=26949, Unknown=0, NotChecked=0, Total=27722 [2023-12-21 17:44:32,924 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 165 mSDsluCounter, 3997 mSDsCounter, 0 mSdLazyCounter, 7032 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 4073 SdHoareTripleChecker+Invalid, 7143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 7032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-12-21 17:44:32,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 4073 Invalid, 7143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 7032 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-12-21 17:44:32,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2023-12-21 17:44:33,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 355. [2023-12-21 17:44:33,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 354 states have (on average 1.2372881355932204) internal successors, (438), 354 states have internal predecessors, (438), 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) [2023-12-21 17:44:33,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 438 transitions. [2023-12-21 17:44:33,074 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 438 transitions. Word has length 144 [2023-12-21 17:44:33,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:44:33,074 INFO L495 AbstractCegarLoop]: Abstraction has 355 states and 438 transitions. [2023-12-21 17:44:33,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 2.9072164948453607) internal successors, (282), 97 states have internal predecessors, (282), 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) [2023-12-21 17:44:33,074 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 438 transitions. [2023-12-21 17:44:33,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-21 17:44:33,075 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:44:33,075 INFO L195 NwaCegarLoop]: trace histogram [24, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:44:33,093 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 (52)] Forceful destruction successful, exit code 0 [2023-12-21 17:44:33,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /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 [2023-12-21 17:44:33,280 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:44:33,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:44:33,281 INFO L85 PathProgramCache]: Analyzing trace with hash -254322545, now seen corresponding path program 45 times [2023-12-21 17:44:33,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:44:33,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1375416181] [2023-12-21 17:44:33,281 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 17:44:33,281 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 [2023-12-21 17:44:33,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:44:33,282 INFO L229 MonitoredProcess]: Starting monitored process 53 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) [2023-12-21 17:44:33,282 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 (53)] Waiting until timeout for monitored process [2023-12-21 17:44:33,722 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2023-12-21 17:44:33,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:44:33,732 INFO L262 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 56 conjunts are in the unsatisfiable core [2023-12-21 17:44:33,734 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:44:35,477 INFO L134 CoverageAnalysis]: Checked inductivity of 1587 backedges. 23 proven. 1564 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:44:35,477 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:44:46,710 INFO L134 CoverageAnalysis]: Checked inductivity of 1587 backedges. 26 proven. 1561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:44:46,711 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:44:46,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1375416181] [2023-12-21 17:44:46,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1375416181] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:44:46,711 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:44:46,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 53] total 105 [2023-12-21 17:44:46,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296726114] [2023-12-21 17:44:46,711 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:44:46,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2023-12-21 17:44:46,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:44:46,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2023-12-21 17:44:46,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1662, Invalid=9258, Unknown=0, NotChecked=0, Total=10920 [2023-12-21 17:44:46,713 INFO L87 Difference]: Start difference. First operand 355 states and 438 transitions. Second operand has 105 states, 105 states have (on average 2.7714285714285714) internal successors, (291), 105 states have internal predecessors, (291), 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) [2023-12-21 17:45:33,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:45:33,004 INFO L93 Difference]: Finished difference Result 740 states and 855 transitions. [2023-12-21 17:45:33,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2023-12-21 17:45:33,005 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 105 states have (on average 2.7714285714285714) internal successors, (291), 105 states have internal predecessors, (291), 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 147 [2023-12-21 17:45:33,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:45:33,006 INFO L225 Difference]: With dead ends: 740 [2023-12-21 17:45:33,006 INFO L226 Difference]: Without dead ends: 664 [2023-12-21 17:45:33,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7957 ImplicationChecksByTransitivity, 52.4s TimeCoverageRelationStatistics Valid=5236, Invalid=19256, Unknown=0, NotChecked=0, Total=24492 [2023-12-21 17:45:33,007 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 1188 mSDsluCounter, 6143 mSDsCounter, 0 mSdLazyCounter, 7667 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1188 SdHoareTripleChecker+Valid, 6263 SdHoareTripleChecker+Invalid, 7900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 7667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-12-21 17:45:33,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1188 Valid, 6263 Invalid, 7900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 7667 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-12-21 17:45:33,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2023-12-21 17:45:33,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 410. [2023-12-21 17:45:33,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 409 states have (on average 1.2689486552567237) internal successors, (519), 409 states have internal predecessors, (519), 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) [2023-12-21 17:45:33,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 519 transitions. [2023-12-21 17:45:33,266 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 519 transitions. Word has length 147 [2023-12-21 17:45:33,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:45:33,266 INFO L495 AbstractCegarLoop]: Abstraction has 410 states and 519 transitions. [2023-12-21 17:45:33,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 105 states have (on average 2.7714285714285714) internal successors, (291), 105 states have internal predecessors, (291), 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) [2023-12-21 17:45:33,266 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 519 transitions. [2023-12-21 17:45:33,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-21 17:45:33,267 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:45:33,267 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:45:33,274 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 (53)] Forceful destruction successful, exit code 0 [2023-12-21 17:45:33,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /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 [2023-12-21 17:45:33,468 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:45:33,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:45:33,468 INFO L85 PathProgramCache]: Analyzing trace with hash 958856879, now seen corresponding path program 46 times [2023-12-21 17:45:33,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:45:33,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1400811724] [2023-12-21 17:45:33,468 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 17:45:33,469 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 [2023-12-21 17:45:33,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:45:33,469 INFO L229 MonitoredProcess]: Starting monitored process 54 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) [2023-12-21 17:45:33,470 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 (54)] Waiting until timeout for monitored process [2023-12-21 17:45:33,704 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 17:45:33,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:45:33,713 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 54 conjunts are in the unsatisfiable core [2023-12-21 17:45:33,716 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:45:33,977 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-21 17:45:35,139 INFO L134 CoverageAnalysis]: Checked inductivity of 1657 backedges. 0 proven. 1657 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:45:35,139 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:45:37,291 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2023-12-21 17:45:37,293 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-12-21 17:45:38,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1657 backedges. 0 proven. 1657 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:45:38,861 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:45:38,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1400811724] [2023-12-21 17:45:38,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1400811724] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:45:38,861 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:45:38,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 101 [2023-12-21 17:45:38,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122149065] [2023-12-21 17:45:38,861 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:45:38,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2023-12-21 17:45:38,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:45:38,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2023-12-21 17:45:38,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=320, Invalid=9780, Unknown=0, NotChecked=0, Total=10100 [2023-12-21 17:45:38,863 INFO L87 Difference]: Start difference. First operand 410 states and 519 transitions. Second operand has 101 states, 101 states have (on average 2.910891089108911) internal successors, (294), 101 states have internal predecessors, (294), 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) [2023-12-21 17:45:48,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:45:48,441 INFO L93 Difference]: Finished difference Result 628 states and 764 transitions. [2023-12-21 17:45:48,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2023-12-21 17:45:48,442 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 2.910891089108911) internal successors, (294), 101 states have internal predecessors, (294), 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 150 [2023-12-21 17:45:48,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:45:48,443 INFO L225 Difference]: With dead ends: 628 [2023-12-21 17:45:48,443 INFO L226 Difference]: Without dead ends: 626 [2023-12-21 17:45:48,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7007 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=806, Invalid=29296, Unknown=0, NotChecked=0, Total=30102 [2023-12-21 17:45:48,444 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 163 mSDsluCounter, 4960 mSDsCounter, 0 mSdLazyCounter, 8673 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 5039 SdHoareTripleChecker+Invalid, 8786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 8673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-12-21 17:45:48,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 5039 Invalid, 8786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 8673 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-12-21 17:45:48,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2023-12-21 17:45:48,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 413. [2023-12-21 17:45:48,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 412 states have (on average 1.266990291262136) internal successors, (522), 412 states have internal predecessors, (522), 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) [2023-12-21 17:45:48,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 522 transitions. [2023-12-21 17:45:48,708 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 522 transitions. Word has length 150 [2023-12-21 17:45:48,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:45:48,708 INFO L495 AbstractCegarLoop]: Abstraction has 413 states and 522 transitions. [2023-12-21 17:45:48,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 2.910891089108911) internal successors, (294), 101 states have internal predecessors, (294), 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) [2023-12-21 17:45:48,708 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 522 transitions. [2023-12-21 17:45:48,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-21 17:45:48,709 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:45:48,709 INFO L195 NwaCegarLoop]: trace histogram [25, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:45:48,715 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 (54)] Forceful destruction successful, exit code 0 [2023-12-21 17:45:48,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /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 [2023-12-21 17:45:48,915 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:45:48,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:45:48,915 INFO L85 PathProgramCache]: Analyzing trace with hash -517098126, now seen corresponding path program 47 times [2023-12-21 17:45:48,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:45:48,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [132403241] [2023-12-21 17:45:48,917 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 17:45:48,917 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 [2023-12-21 17:45:48,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:45:48,918 INFO L229 MonitoredProcess]: Starting monitored process 55 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) [2023-12-21 17:45:48,948 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 (55)] Waiting until timeout for monitored process [2023-12-21 17:45:49,464 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2023-12-21 17:45:49,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:45:49,477 INFO L262 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 58 conjunts are in the unsatisfiable core [2023-12-21 17:45:49,485 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:45:51,431 INFO L134 CoverageAnalysis]: Checked inductivity of 1728 backedges. 24 proven. 1704 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:45:51,431 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:45:58,971 INFO L134 CoverageAnalysis]: Checked inductivity of 1728 backedges. 24 proven. 1704 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:45:58,971 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:45:58,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [132403241] [2023-12-21 17:45:58,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [132403241] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:45:58,971 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:45:58,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 54] total 109 [2023-12-21 17:45:58,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123188466] [2023-12-21 17:45:58,972 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:45:58,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 109 states [2023-12-21 17:45:58,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:45:58,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2023-12-21 17:45:58,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1892, Invalid=9880, Unknown=0, NotChecked=0, Total=11772 [2023-12-21 17:45:58,973 INFO L87 Difference]: Start difference. First operand 413 states and 522 transitions. Second operand has 109 states, 109 states have (on average 2.779816513761468) internal successors, (303), 109 states have internal predecessors, (303), 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) [2023-12-21 17:46:03,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:46:03,317 INFO L93 Difference]: Finished difference Result 704 states and 840 transitions. [2023-12-21 17:46:03,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2023-12-21 17:46:03,318 INFO L78 Accepts]: Start accepts. Automaton has has 109 states, 109 states have (on average 2.779816513761468) internal successors, (303), 109 states have internal predecessors, (303), 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 153 [2023-12-21 17:46:03,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:46:03,320 INFO L225 Difference]: With dead ends: 704 [2023-12-21 17:46:03,320 INFO L226 Difference]: Without dead ends: 625 [2023-12-21 17:46:03,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4255 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=1975, Invalid=10457, Unknown=0, NotChecked=0, Total=12432 [2023-12-21 17:46:03,321 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 880 mSDsluCounter, 3559 mSDsCounter, 0 mSdLazyCounter, 6573 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 880 SdHoareTripleChecker+Valid, 3636 SdHoareTripleChecker+Invalid, 6812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 6573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-21 17:46:03,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [880 Valid, 3636 Invalid, 6812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 6573 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-21 17:46:03,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2023-12-21 17:46:03,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 413. [2023-12-21 17:46:03,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 412 states have (on average 1.2645631067961165) internal successors, (521), 412 states have internal predecessors, (521), 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) [2023-12-21 17:46:03,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 521 transitions. [2023-12-21 17:46:03,582 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 521 transitions. Word has length 153 [2023-12-21 17:46:03,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:46:03,583 INFO L495 AbstractCegarLoop]: Abstraction has 413 states and 521 transitions. [2023-12-21 17:46:03,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 109 states, 109 states have (on average 2.779816513761468) internal successors, (303), 109 states have internal predecessors, (303), 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) [2023-12-21 17:46:03,583 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 521 transitions. [2023-12-21 17:46:03,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-12-21 17:46:03,583 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:46:03,583 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 25, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:46:03,589 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 (55)] Ended with exit code 0 [2023-12-21 17:46:03,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /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 [2023-12-21 17:46:03,784 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:46:03,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:46:03,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1500529554, now seen corresponding path program 48 times [2023-12-21 17:46:03,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:46:03,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [731720607] [2023-12-21 17:46:03,785 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 17:46:03,785 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 [2023-12-21 17:46:03,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:46:03,786 INFO L229 MonitoredProcess]: Starting monitored process 56 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) [2023-12-21 17:46:03,787 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 (56)] Waiting until timeout for monitored process [2023-12-21 17:46:04,413 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 26 check-sat command(s) [2023-12-21 17:46:04,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:46:04,426 INFO L262 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 56 conjunts are in the unsatisfiable core [2023-12-21 17:46:04,428 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:46:04,717 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-21 17:46:05,978 INFO L134 CoverageAnalysis]: Checked inductivity of 1801 backedges. 0 proven. 1801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:46:05,978 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:46:08,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2023-12-21 17:46:08,298 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-12-21 17:46:09,960 INFO L134 CoverageAnalysis]: Checked inductivity of 1801 backedges. 0 proven. 1801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:46:09,961 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:46:09,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [731720607] [2023-12-21 17:46:09,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [731720607] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:46:09,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:46:09,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 105 [2023-12-21 17:46:09,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697240442] [2023-12-21 17:46:09,961 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:46:09,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2023-12-21 17:46:09,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:46:09,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2023-12-21 17:46:09,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=333, Invalid=10587, Unknown=0, NotChecked=0, Total=10920 [2023-12-21 17:46:09,963 INFO L87 Difference]: Start difference. First operand 413 states and 521 transitions. Second operand has 105 states, 105 states have (on average 2.914285714285714) internal successors, (306), 105 states have internal predecessors, (306), 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) [2023-12-21 17:46:20,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:46:20,334 INFO L93 Difference]: Finished difference Result 636 states and 771 transitions. [2023-12-21 17:46:20,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2023-12-21 17:46:20,334 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 105 states have (on average 2.914285714285714) internal successors, (306), 105 states have internal predecessors, (306), 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 156 [2023-12-21 17:46:20,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:46:20,336 INFO L225 Difference]: With dead ends: 636 [2023-12-21 17:46:20,336 INFO L226 Difference]: Without dead ends: 634 [2023-12-21 17:46:20,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7599 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=839, Invalid=31741, Unknown=0, NotChecked=0, Total=32580 [2023-12-21 17:46:20,337 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 164 mSDsluCounter, 5590 mSDsCounter, 0 mSdLazyCounter, 9848 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 5672 SdHoareTripleChecker+Invalid, 9964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 9848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-12-21 17:46:20,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 5672 Invalid, 9964 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 9848 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2023-12-21 17:46:20,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2023-12-21 17:46:20,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 416. [2023-12-21 17:46:20,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 415 states have (on average 1.2626506024096384) internal successors, (524), 415 states have internal predecessors, (524), 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) [2023-12-21 17:46:20,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 524 transitions. [2023-12-21 17:46:20,618 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 524 transitions. Word has length 156 [2023-12-21 17:46:20,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:46:20,618 INFO L495 AbstractCegarLoop]: Abstraction has 416 states and 524 transitions. [2023-12-21 17:46:20,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 105 states have (on average 2.914285714285714) internal successors, (306), 105 states have internal predecessors, (306), 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) [2023-12-21 17:46:20,618 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 524 transitions. [2023-12-21 17:46:20,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-12-21 17:46:20,619 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:46:20,619 INFO L195 NwaCegarLoop]: trace histogram [26, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:46:20,625 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 (56)] Ended with exit code 0 [2023-12-21 17:46:20,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /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 [2023-12-21 17:46:20,825 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:46:20,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:46:20,826 INFO L85 PathProgramCache]: Analyzing trace with hash 261431727, now seen corresponding path program 49 times [2023-12-21 17:46:20,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:46:20,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2097344573] [2023-12-21 17:46:20,826 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 17:46:20,826 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 [2023-12-21 17:46:20,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:46:20,827 INFO L229 MonitoredProcess]: Starting monitored process 57 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) [2023-12-21 17:46:20,828 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 (57)] Waiting until timeout for monitored process [2023-12-21 17:46:21,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 17:46:21,091 INFO L262 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 60 conjunts are in the unsatisfiable core [2023-12-21 17:46:21,093 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:46:23,100 INFO L134 CoverageAnalysis]: Checked inductivity of 1875 backedges. 25 proven. 1850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:46:23,100 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:46:33,233 INFO L134 CoverageAnalysis]: Checked inductivity of 1875 backedges. 25 proven. 1850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:46:33,233 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:46:33,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2097344573] [2023-12-21 17:46:33,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2097344573] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:46:33,233 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:46:33,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 56] total 113 [2023-12-21 17:46:33,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114550779] [2023-12-21 17:46:33,234 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:46:33,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 113 states [2023-12-21 17:46:33,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:46:33,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2023-12-21 17:46:33,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2184, Invalid=10472, Unknown=0, NotChecked=0, Total=12656 [2023-12-21 17:46:33,236 INFO L87 Difference]: Start difference. First operand 416 states and 524 transitions. Second operand has 113 states, 113 states have (on average 2.7876106194690267) internal successors, (315), 113 states have internal predecessors, (315), 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) [2023-12-21 17:46:37,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:46:37,718 INFO L93 Difference]: Finished difference Result 715 states and 850 transitions. [2023-12-21 17:46:37,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-12-21 17:46:37,719 INFO L78 Accepts]: Start accepts. Automaton has has 113 states, 113 states have (on average 2.7876106194690267) internal successors, (315), 113 states have internal predecessors, (315), 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 159 [2023-12-21 17:46:37,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:46:37,720 INFO L225 Difference]: With dead ends: 715 [2023-12-21 17:46:37,720 INFO L226 Difference]: Without dead ends: 633 [2023-12-21 17:46:37,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4565 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=2277, Invalid=11063, Unknown=0, NotChecked=0, Total=13340 [2023-12-21 17:46:37,721 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 1018 mSDsluCounter, 3507 mSDsCounter, 0 mSdLazyCounter, 6517 mSolverCounterSat, 271 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1018 SdHoareTripleChecker+Valid, 3587 SdHoareTripleChecker+Invalid, 6788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 271 IncrementalHoareTripleChecker+Valid, 6517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-21 17:46:37,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1018 Valid, 3587 Invalid, 6788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [271 Valid, 6517 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-21 17:46:37,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2023-12-21 17:46:37,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 416. [2023-12-21 17:46:37,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 415 states have (on average 1.2602409638554217) internal successors, (523), 415 states have internal predecessors, (523), 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) [2023-12-21 17:46:37,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 523 transitions. [2023-12-21 17:46:37,995 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 523 transitions. Word has length 159 [2023-12-21 17:46:37,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:46:37,995 INFO L495 AbstractCegarLoop]: Abstraction has 416 states and 523 transitions. [2023-12-21 17:46:37,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 113 states, 113 states have (on average 2.7876106194690267) internal successors, (315), 113 states have internal predecessors, (315), 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) [2023-12-21 17:46:37,996 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 523 transitions. [2023-12-21 17:46:37,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-21 17:46:37,996 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:46:37,996 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 26, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:46:38,005 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 (57)] Forceful destruction successful, exit code 0 [2023-12-21 17:46:38,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /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 [2023-12-21 17:46:38,197 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:46:38,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:46:38,197 INFO L85 PathProgramCache]: Analyzing trace with hash 536647631, now seen corresponding path program 50 times [2023-12-21 17:46:38,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:46:38,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [466872617] [2023-12-21 17:46:38,198 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 17:46:38,198 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 [2023-12-21 17:46:38,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:46:38,199 INFO L229 MonitoredProcess]: Starting monitored process 58 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) [2023-12-21 17:46:38,199 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 (58)] Waiting until timeout for monitored process [2023-12-21 17:46:38,534 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 17:46:38,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:46:38,547 INFO L262 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 58 conjunts are in the unsatisfiable core [2023-12-21 17:46:38,549 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:46:38,875 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-21 17:46:40,240 INFO L134 CoverageAnalysis]: Checked inductivity of 1951 backedges. 0 proven. 1951 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:46:40,240 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:46:42,793 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2023-12-21 17:46:42,794 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-12-21 17:46:44,598 INFO L134 CoverageAnalysis]: Checked inductivity of 1951 backedges. 0 proven. 1951 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:46:44,599 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:46:44,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [466872617] [2023-12-21 17:46:44,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [466872617] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:46:44,599 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:46:44,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 109 [2023-12-21 17:46:44,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304773435] [2023-12-21 17:46:44,599 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:46:44,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 109 states [2023-12-21 17:46:44,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:46:44,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2023-12-21 17:46:44,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=346, Invalid=11426, Unknown=0, NotChecked=0, Total=11772 [2023-12-21 17:46:44,601 INFO L87 Difference]: Start difference. First operand 416 states and 523 transitions. Second operand has 109 states, 109 states have (on average 2.9174311926605503) internal successors, (318), 109 states have internal predecessors, (318), 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) [2023-12-21 17:46:55,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:46:55,157 INFO L93 Difference]: Finished difference Result 644 states and 778 transitions. [2023-12-21 17:46:55,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2023-12-21 17:46:55,158 INFO L78 Accepts]: Start accepts. Automaton has has 109 states, 109 states have (on average 2.9174311926605503) internal successors, (318), 109 states have internal predecessors, (318), 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 162 [2023-12-21 17:46:55,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:46:55,159 INFO L225 Difference]: With dead ends: 644 [2023-12-21 17:46:55,159 INFO L226 Difference]: Without dead ends: 642 [2023-12-21 17:46:55,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8215 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=872, Invalid=34284, Unknown=0, NotChecked=0, Total=35156 [2023-12-21 17:46:55,161 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 179 mSDsluCounter, 5455 mSDsCounter, 0 mSdLazyCounter, 9516 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 5540 SdHoareTripleChecker+Invalid, 9640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 9516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-12-21 17:46:55,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 5540 Invalid, 9640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 9516 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2023-12-21 17:46:55,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2023-12-21 17:46:55,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 419. [2023-12-21 17:46:55,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 418 states have (on average 1.2583732057416268) internal successors, (526), 418 states have internal predecessors, (526), 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) [2023-12-21 17:46:55,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 526 transitions. [2023-12-21 17:46:55,447 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 526 transitions. Word has length 162 [2023-12-21 17:46:55,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:46:55,447 INFO L495 AbstractCegarLoop]: Abstraction has 419 states and 526 transitions. [2023-12-21 17:46:55,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 109 states, 109 states have (on average 2.9174311926605503) internal successors, (318), 109 states have internal predecessors, (318), 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) [2023-12-21 17:46:55,448 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 526 transitions. [2023-12-21 17:46:55,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-12-21 17:46:55,448 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:46:55,448 INFO L195 NwaCegarLoop]: trace histogram [27, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:46:55,457 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 (58)] Forceful destruction successful, exit code 0 [2023-12-21 17:46:55,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /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 [2023-12-21 17:46:55,660 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:46:55,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:46:55,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1406404690, now seen corresponding path program 51 times [2023-12-21 17:46:55,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:46:55,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [803000042] [2023-12-21 17:46:55,660 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 17:46:55,661 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 [2023-12-21 17:46:55,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:46:55,661 INFO L229 MonitoredProcess]: Starting monitored process 59 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) [2023-12-21 17:46:55,688 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 (59)] Waiting until timeout for monitored process [2023-12-21 17:46:56,305 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2023-12-21 17:46:56,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:46:56,317 INFO L262 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 62 conjunts are in the unsatisfiable core [2023-12-21 17:46:56,319 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:46:58,490 INFO L134 CoverageAnalysis]: Checked inductivity of 2028 backedges. 26 proven. 2002 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:46:58,490 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:47:09,770 INFO L134 CoverageAnalysis]: Checked inductivity of 2028 backedges. 26 proven. 2002 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:47:09,771 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:47:09,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [803000042] [2023-12-21 17:47:09,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [803000042] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:47:09,771 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:47:09,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 58] total 117 [2023-12-21 17:47:09,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409917844] [2023-12-21 17:47:09,771 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:47:09,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 117 states [2023-12-21 17:47:09,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:47:09,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2023-12-21 17:47:09,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2328, Invalid=11244, Unknown=0, NotChecked=0, Total=13572 [2023-12-21 17:47:09,773 INFO L87 Difference]: Start difference. First operand 419 states and 526 transitions. Second operand has 117 states, 117 states have (on average 2.7948717948717947) internal successors, (327), 117 states have internal predecessors, (327), 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) [2023-12-21 17:47:14,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:47:14,471 INFO L93 Difference]: Finished difference Result 726 states and 860 transitions. [2023-12-21 17:47:14,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2023-12-21 17:47:14,472 INFO L78 Accepts]: Start accepts. Automaton has has 117 states, 117 states have (on average 2.7948717948717947) internal successors, (327), 117 states have internal predecessors, (327), 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 165 [2023-12-21 17:47:14,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:47:14,474 INFO L225 Difference]: With dead ends: 726 [2023-12-21 17:47:14,474 INFO L226 Difference]: Without dead ends: 641 [2023-12-21 17:47:14,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4889 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=2424, Invalid=11856, Unknown=0, NotChecked=0, Total=14280 [2023-12-21 17:47:14,475 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 822 mSDsluCounter, 3453 mSDsCounter, 0 mSdLazyCounter, 6444 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 822 SdHoareTripleChecker+Valid, 3536 SdHoareTripleChecker+Invalid, 6685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 6444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-21 17:47:14,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [822 Valid, 3536 Invalid, 6685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 6444 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-21 17:47:14,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2023-12-21 17:47:14,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 419. [2023-12-21 17:47:14,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 418 states have (on average 1.255980861244019) internal successors, (525), 418 states have internal predecessors, (525), 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) [2023-12-21 17:47:14,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 525 transitions. [2023-12-21 17:47:14,755 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 525 transitions. Word has length 165 [2023-12-21 17:47:14,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:47:14,755 INFO L495 AbstractCegarLoop]: Abstraction has 419 states and 525 transitions. [2023-12-21 17:47:14,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 117 states, 117 states have (on average 2.7948717948717947) internal successors, (327), 117 states have internal predecessors, (327), 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) [2023-12-21 17:47:14,755 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 525 transitions. [2023-12-21 17:47:14,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-12-21 17:47:14,756 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:47:14,756 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 27, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:47:14,762 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 (59)] Forceful destruction successful, exit code 0 [2023-12-21 17:47:14,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /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 [2023-12-21 17:47:14,956 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:47:14,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:47:14,956 INFO L85 PathProgramCache]: Analyzing trace with hash -149789070, now seen corresponding path program 52 times [2023-12-21 17:47:14,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:47:14,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [721872025] [2023-12-21 17:47:14,957 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 17:47:14,957 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 [2023-12-21 17:47:14,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:47:14,958 INFO L229 MonitoredProcess]: Starting monitored process 60 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) [2023-12-21 17:47:14,958 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 (60)] Waiting until timeout for monitored process [2023-12-21 17:47:15,265 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 17:47:15,265 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:47:15,277 INFO L262 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 60 conjunts are in the unsatisfiable core [2023-12-21 17:47:15,279 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:47:15,607 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-21 17:47:17,022 INFO L134 CoverageAnalysis]: Checked inductivity of 2107 backedges. 0 proven. 2107 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:47:17,023 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:47:19,667 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2023-12-21 17:47:19,668 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-12-21 17:47:21,588 INFO L134 CoverageAnalysis]: Checked inductivity of 2107 backedges. 0 proven. 2107 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:47:21,588 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:47:21,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [721872025] [2023-12-21 17:47:21,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [721872025] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:47:21,589 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:47:21,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 113 [2023-12-21 17:47:21,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919872243] [2023-12-21 17:47:21,589 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:47:21,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 113 states [2023-12-21 17:47:21,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:47:21,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2023-12-21 17:47:21,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=359, Invalid=12297, Unknown=0, NotChecked=0, Total=12656 [2023-12-21 17:47:21,590 INFO L87 Difference]: Start difference. First operand 419 states and 525 transitions. Second operand has 113 states, 113 states have (on average 2.920353982300885) internal successors, (330), 113 states have internal predecessors, (330), 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) [2023-12-21 17:47:33,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:47:33,414 INFO L93 Difference]: Finished difference Result 652 states and 785 transitions. [2023-12-21 17:47:33,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2023-12-21 17:47:33,414 INFO L78 Accepts]: Start accepts. Automaton has has 113 states, 113 states have (on average 2.920353982300885) internal successors, (330), 113 states have internal predecessors, (330), 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 168 [2023-12-21 17:47:33,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:47:33,415 INFO L225 Difference]: With dead ends: 652 [2023-12-21 17:47:33,415 INFO L226 Difference]: Without dead ends: 650 [2023-12-21 17:47:33,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8855 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=905, Invalid=36925, Unknown=0, NotChecked=0, Total=37830 [2023-12-21 17:47:33,417 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 177 mSDsluCounter, 6512 mSDsCounter, 0 mSdLazyCounter, 11429 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 6600 SdHoareTripleChecker+Invalid, 11555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 11429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-12-21 17:47:33,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 6600 Invalid, 11555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 11429 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2023-12-21 17:47:33,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2023-12-21 17:47:33,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 422. [2023-12-21 17:47:33,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 421 states have (on average 1.2541567695961995) internal successors, (528), 421 states have internal predecessors, (528), 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) [2023-12-21 17:47:33,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 528 transitions. [2023-12-21 17:47:33,702 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 528 transitions. Word has length 168 [2023-12-21 17:47:33,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:47:33,703 INFO L495 AbstractCegarLoop]: Abstraction has 422 states and 528 transitions. [2023-12-21 17:47:33,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 113 states, 113 states have (on average 2.920353982300885) internal successors, (330), 113 states have internal predecessors, (330), 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) [2023-12-21 17:47:33,703 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 528 transitions. [2023-12-21 17:47:33,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-21 17:47:33,703 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:47:33,703 INFO L195 NwaCegarLoop]: trace histogram [28, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:47:33,720 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 (60)] Forceful destruction successful, exit code 0 [2023-12-21 17:47:33,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /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 [2023-12-21 17:47:33,909 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:47:33,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:47:33,910 INFO L85 PathProgramCache]: Analyzing trace with hash 109941455, now seen corresponding path program 53 times [2023-12-21 17:47:33,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:47:33,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [486665804] [2023-12-21 17:47:33,910 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 17:47:33,910 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 [2023-12-21 17:47:33,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:47:33,911 INFO L229 MonitoredProcess]: Starting monitored process 61 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) [2023-12-21 17:47:33,912 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 (61)] Waiting until timeout for monitored process [2023-12-21 17:47:34,389 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2023-12-21 17:47:34,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:47:34,400 INFO L262 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 65 conjunts are in the unsatisfiable core [2023-12-21 17:47:34,402 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:47:36,703 INFO L134 CoverageAnalysis]: Checked inductivity of 2187 backedges. 27 proven. 2160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:47:36,703 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:47:47,489 INFO L134 CoverageAnalysis]: Checked inductivity of 2187 backedges. 27 proven. 2160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:47:47,490 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:47:47,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [486665804] [2023-12-21 17:47:47,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [486665804] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:47:47,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:47:47,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 60] total 122 [2023-12-21 17:47:47,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640824870] [2023-12-21 17:47:47,490 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:47:47,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 122 states [2023-12-21 17:47:47,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:47:47,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2023-12-21 17:47:47,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2460, Invalid=12302, Unknown=0, NotChecked=0, Total=14762 [2023-12-21 17:47:47,492 INFO L87 Difference]: Start difference. First operand 422 states and 528 transitions. Second operand has 122 states, 122 states have (on average 2.778688524590164) internal successors, (339), 122 states have internal predecessors, (339), 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) [2023-12-21 17:47:52,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:47:52,661 INFO L93 Difference]: Finished difference Result 737 states and 870 transitions. [2023-12-21 17:47:52,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2023-12-21 17:47:52,662 INFO L78 Accepts]: Start accepts. Automaton has has 122 states, 122 states have (on average 2.778688524590164) internal successors, (339), 122 states have internal predecessors, (339), 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 171 [2023-12-21 17:47:52,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:47:52,664 INFO L225 Difference]: With dead ends: 737 [2023-12-21 17:47:52,664 INFO L226 Difference]: Without dead ends: 649 [2023-12-21 17:47:52,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5381 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=2558, Invalid=12942, Unknown=0, NotChecked=0, Total=15500 [2023-12-21 17:47:52,665 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 1051 mSDsluCounter, 4243 mSDsCounter, 0 mSdLazyCounter, 7849 mSolverCounterSat, 307 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1051 SdHoareTripleChecker+Valid, 4329 SdHoareTripleChecker+Invalid, 8156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 307 IncrementalHoareTripleChecker+Valid, 7849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-12-21 17:47:52,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1051 Valid, 4329 Invalid, 8156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [307 Valid, 7849 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-12-21 17:47:52,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2023-12-21 17:47:52,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 422. [2023-12-21 17:47:52,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 421 states have (on average 1.2517814726840855) internal successors, (527), 421 states have internal predecessors, (527), 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) [2023-12-21 17:47:52,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 527 transitions. [2023-12-21 17:47:52,952 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 527 transitions. Word has length 171 [2023-12-21 17:47:52,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:47:52,952 INFO L495 AbstractCegarLoop]: Abstraction has 422 states and 527 transitions. [2023-12-21 17:47:52,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 122 states, 122 states have (on average 2.778688524590164) internal successors, (339), 122 states have internal predecessors, (339), 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) [2023-12-21 17:47:52,953 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 527 transitions. [2023-12-21 17:47:52,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-12-21 17:47:52,953 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:47:52,953 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 28, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:47:52,961 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 (61)] Forceful destruction successful, exit code 0 [2023-12-21 17:47:53,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /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 [2023-12-21 17:47:53,154 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:47:53,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:47:53,154 INFO L85 PathProgramCache]: Analyzing trace with hash -371926801, now seen corresponding path program 54 times [2023-12-21 17:47:53,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:47:53,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [229090752] [2023-12-21 17:47:53,155 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 17:47:53,155 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 [2023-12-21 17:47:53,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:47:53,156 INFO L229 MonitoredProcess]: Starting monitored process 62 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) [2023-12-21 17:47:53,162 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 (62)] Waiting until timeout for monitored process [2023-12-21 17:47:53,935 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 29 check-sat command(s) [2023-12-21 17:47:53,935 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:47:53,949 INFO L262 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 62 conjunts are in the unsatisfiable core [2023-12-21 17:47:53,951 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:47:54,291 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-21 17:47:55,783 INFO L134 CoverageAnalysis]: Checked inductivity of 2269 backedges. 0 proven. 2269 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:47:55,784 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:47:58,620 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2023-12-21 17:47:58,621 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-12-21 17:48:00,667 INFO L134 CoverageAnalysis]: Checked inductivity of 2269 backedges. 0 proven. 2269 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:48:00,668 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:48:00,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [229090752] [2023-12-21 17:48:00,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [229090752] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:48:00,668 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:48:00,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 117 [2023-12-21 17:48:00,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391441548] [2023-12-21 17:48:00,668 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:48:00,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 117 states [2023-12-21 17:48:00,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:48:00,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2023-12-21 17:48:00,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=372, Invalid=13200, Unknown=0, NotChecked=0, Total=13572 [2023-12-21 17:48:00,670 INFO L87 Difference]: Start difference. First operand 422 states and 527 transitions. Second operand has 117 states, 117 states have (on average 2.923076923076923) internal successors, (342), 117 states have internal predecessors, (342), 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) [2023-12-21 17:48:13,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:48:13,195 INFO L93 Difference]: Finished difference Result 660 states and 792 transitions. [2023-12-21 17:48:13,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2023-12-21 17:48:13,195 INFO L78 Accepts]: Start accepts. Automaton has has 117 states, 117 states have (on average 2.923076923076923) internal successors, (342), 117 states have internal predecessors, (342), 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 174 [2023-12-21 17:48:13,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:48:13,197 INFO L225 Difference]: With dead ends: 660 [2023-12-21 17:48:13,197 INFO L226 Difference]: Without dead ends: 658 [2023-12-21 17:48:13,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9519 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=938, Invalid=39664, Unknown=0, NotChecked=0, Total=40602 [2023-12-21 17:48:13,198 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 167 mSDsluCounter, 6801 mSDsCounter, 0 mSdLazyCounter, 11811 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 6892 SdHoareTripleChecker+Invalid, 11938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 11811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2023-12-21 17:48:13,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 6892 Invalid, 11938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 11811 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2023-12-21 17:48:13,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2023-12-21 17:48:13,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 425. [2023-12-21 17:48:13,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 424 states have (on average 1.25) internal successors, (530), 424 states have internal predecessors, (530), 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) [2023-12-21 17:48:13,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 530 transitions. [2023-12-21 17:48:13,505 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 530 transitions. Word has length 174 [2023-12-21 17:48:13,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:48:13,505 INFO L495 AbstractCegarLoop]: Abstraction has 425 states and 530 transitions. [2023-12-21 17:48:13,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 117 states, 117 states have (on average 2.923076923076923) internal successors, (342), 117 states have internal predecessors, (342), 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) [2023-12-21 17:48:13,505 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 530 transitions. [2023-12-21 17:48:13,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-12-21 17:48:13,506 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:48:13,506 INFO L195 NwaCegarLoop]: trace histogram [29, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:48:13,513 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 (62)] Forceful destruction successful, exit code 0 [2023-12-21 17:48:13,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /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 [2023-12-21 17:48:13,713 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:48:13,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:48:13,713 INFO L85 PathProgramCache]: Analyzing trace with hash 949400370, now seen corresponding path program 55 times [2023-12-21 17:48:13,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:48:13,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [838918273] [2023-12-21 17:48:13,714 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 17:48:13,714 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 [2023-12-21 17:48:13,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:48:13,715 INFO L229 MonitoredProcess]: Starting monitored process 63 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) [2023-12-21 17:48:13,744 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 (63)] Waiting until timeout for monitored process [2023-12-21 17:48:14,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 17:48:14,034 INFO L262 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 66 conjunts are in the unsatisfiable core [2023-12-21 17:48:14,036 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:48:16,499 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 28 proven. 2324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:48:16,499 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:48:27,765 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 28 proven. 2324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:48:27,765 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:48:27,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [838918273] [2023-12-21 17:48:27,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [838918273] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:48:27,766 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:48:27,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 62] total 125 [2023-12-21 17:48:27,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792091146] [2023-12-21 17:48:27,766 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:48:27,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 125 states [2023-12-21 17:48:27,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:48:27,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2023-12-21 17:48:27,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2571, Invalid=12929, Unknown=0, NotChecked=0, Total=15500 [2023-12-21 17:48:27,768 INFO L87 Difference]: Start difference. First operand 425 states and 530 transitions. Second operand has 125 states, 125 states have (on average 2.808) internal successors, (351), 125 states have internal predecessors, (351), 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) [2023-12-21 17:48:33,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:48:33,226 INFO L93 Difference]: Finished difference Result 748 states and 880 transitions. [2023-12-21 17:48:33,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2023-12-21 17:48:33,228 INFO L78 Accepts]: Start accepts. Automaton has has 125 states, 125 states have (on average 2.808) internal successors, (351), 125 states have internal predecessors, (351), 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 177 [2023-12-21 17:48:33,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:48:33,229 INFO L225 Difference]: With dead ends: 748 [2023-12-21 17:48:33,229 INFO L226 Difference]: Without dead ends: 657 [2023-12-21 17:48:33,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5621 ImplicationChecksByTransitivity, 12.7s TimeCoverageRelationStatistics Valid=2670, Invalid=13586, Unknown=0, NotChecked=0, Total=16256 [2023-12-21 17:48:33,230 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 970 mSDsluCounter, 4509 mSDsCounter, 0 mSdLazyCounter, 8303 mSolverCounterSat, 266 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 970 SdHoareTripleChecker+Valid, 4598 SdHoareTripleChecker+Invalid, 8569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 266 IncrementalHoareTripleChecker+Valid, 8303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-12-21 17:48:33,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [970 Valid, 4598 Invalid, 8569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [266 Valid, 8303 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-12-21 17:48:33,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2023-12-21 17:48:33,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 425. [2023-12-21 17:48:33,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 424 states have (on average 1.2476415094339623) internal successors, (529), 424 states have internal predecessors, (529), 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) [2023-12-21 17:48:33,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 529 transitions. [2023-12-21 17:48:33,532 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 529 transitions. Word has length 177 [2023-12-21 17:48:33,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:48:33,532 INFO L495 AbstractCegarLoop]: Abstraction has 425 states and 529 transitions. [2023-12-21 17:48:33,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 125 states, 125 states have (on average 2.808) internal successors, (351), 125 states have internal predecessors, (351), 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) [2023-12-21 17:48:33,532 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 529 transitions. [2023-12-21 17:48:33,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2023-12-21 17:48:33,532 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:48:33,533 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 29, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:48:33,539 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 (63)] Ended with exit code 0 [2023-12-21 17:48:33,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /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 [2023-12-21 17:48:33,739 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:48:33,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:48:33,739 INFO L85 PathProgramCache]: Analyzing trace with hash -610737838, now seen corresponding path program 56 times [2023-12-21 17:48:33,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:48:33,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1554821921] [2023-12-21 17:48:33,739 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 17:48:33,739 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 [2023-12-21 17:48:33,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:48:33,740 INFO L229 MonitoredProcess]: Starting monitored process 64 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) [2023-12-21 17:48:33,741 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 (64)] Waiting until timeout for monitored process [2023-12-21 17:48:34,057 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 17:48:34,058 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:48:34,070 INFO L262 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 65 conjunts are in the unsatisfiable core [2023-12-21 17:48:34,073 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:48:34,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-21 17:48:36,097 INFO L134 CoverageAnalysis]: Checked inductivity of 2437 backedges. 0 proven. 2437 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:48:36,097 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:48:38,904 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2023-12-21 17:48:38,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-12-21 17:48:41,050 INFO L134 CoverageAnalysis]: Checked inductivity of 2437 backedges. 0 proven. 2437 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:48:41,050 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:48:41,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1554821921] [2023-12-21 17:48:41,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1554821921] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:48:41,050 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:48:41,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 122 [2023-12-21 17:48:41,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579839064] [2023-12-21 17:48:41,050 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:48:41,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 122 states [2023-12-21 17:48:41,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:48:41,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2023-12-21 17:48:41,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=417, Invalid=14345, Unknown=0, NotChecked=0, Total=14762 [2023-12-21 17:48:41,052 INFO L87 Difference]: Start difference. First operand 425 states and 529 transitions. Second operand has 122 states, 122 states have (on average 2.918032786885246) internal successors, (356), 122 states have internal predecessors, (356), 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) [2023-12-21 17:48:52,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:48:52,009 INFO L93 Difference]: Finished difference Result 668 states and 799 transitions. [2023-12-21 17:48:52,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 180 states. [2023-12-21 17:48:52,010 INFO L78 Accepts]: Start accepts. Automaton has has 122 states, 122 states have (on average 2.918032786885246) internal successors, (356), 122 states have internal predecessors, (356), 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 180 [2023-12-21 17:48:52,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:48:52,011 INFO L225 Difference]: With dead ends: 668 [2023-12-21 17:48:52,011 INFO L226 Difference]: Without dead ends: 666 [2023-12-21 17:48:52,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10295 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=1005, Invalid=42885, Unknown=0, NotChecked=0, Total=43890 [2023-12-21 17:48:52,013 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 133 mSDsluCounter, 6703 mSDsCounter, 0 mSdLazyCounter, 11723 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 6797 SdHoareTripleChecker+Invalid, 11844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 11723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-12-21 17:48:52,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 6797 Invalid, 11844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 11723 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2023-12-21 17:48:52,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2023-12-21 17:48:52,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 428. [2023-12-21 17:48:52,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 427 states have (on average 1.2459016393442623) internal successors, (532), 427 states have internal predecessors, (532), 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) [2023-12-21 17:48:52,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 532 transitions. [2023-12-21 17:48:52,329 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 532 transitions. Word has length 180 [2023-12-21 17:48:52,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:48:52,329 INFO L495 AbstractCegarLoop]: Abstraction has 428 states and 532 transitions. [2023-12-21 17:48:52,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 122 states, 122 states have (on average 2.918032786885246) internal successors, (356), 122 states have internal predecessors, (356), 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) [2023-12-21 17:48:52,330 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 532 transitions. [2023-12-21 17:48:52,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-12-21 17:48:52,330 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:48:52,330 INFO L195 NwaCegarLoop]: trace histogram [30, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:48:52,340 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 (64)] Forceful destruction successful, exit code 0 [2023-12-21 17:48:52,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /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 [2023-12-21 17:48:52,531 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:48:52,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:48:52,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1004360721, now seen corresponding path program 57 times [2023-12-21 17:48:52,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:48:52,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1180249254] [2023-12-21 17:48:52,532 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 17:48:52,532 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 [2023-12-21 17:48:52,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:48:52,533 INFO L229 MonitoredProcess]: Starting monitored process 65 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) [2023-12-21 17:48:52,533 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 (65)] Waiting until timeout for monitored process [2023-12-21 17:48:53,464 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2023-12-21 17:48:53,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:48:53,477 INFO L262 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 69 conjunts are in the unsatisfiable core [2023-12-21 17:48:53,479 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:48:56,156 INFO L134 CoverageAnalysis]: Checked inductivity of 2523 backedges. 29 proven. 2494 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:48:56,156 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:49:09,611 INFO L134 CoverageAnalysis]: Checked inductivity of 2523 backedges. 29 proven. 2494 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:49:09,612 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:49:09,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1180249254] [2023-12-21 17:49:09,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1180249254] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:49:09,612 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:49:09,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 65] total 130 [2023-12-21 17:49:09,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008114513] [2023-12-21 17:49:09,612 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:49:09,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 130 states [2023-12-21 17:49:09,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:49:09,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2023-12-21 17:49:09,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2874, Invalid=13896, Unknown=0, NotChecked=0, Total=16770 [2023-12-21 17:49:09,614 INFO L87 Difference]: Start difference. First operand 428 states and 532 transitions. Second operand has 130 states, 130 states have (on average 2.792307692307692) internal successors, (363), 130 states have internal predecessors, (363), 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) [2023-12-21 17:49:21,737 WARN L293 SmtUtils]: Spent 5.37s on a formula simplification. DAG size of input: 215 DAG size of output: 187 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 17:49:27,887 WARN L293 SmtUtils]: Spent 5.11s on a formula simplification. DAG size of input: 207 DAG size of output: 180 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 17:49:45,881 WARN L293 SmtUtils]: Spent 5.03s on a formula simplification. DAG size of input: 202 DAG size of output: 176 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 17:51:48,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:51:48,364 INFO L93 Difference]: Finished difference Result 923 states and 1066 transitions. [2023-12-21 17:51:48,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2023-12-21 17:51:48,364 INFO L78 Accepts]: Start accepts. Automaton has has 130 states, 130 states have (on average 2.792307692307692) internal successors, (363), 130 states have internal predecessors, (363), 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 183 [2023-12-21 17:51:48,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:51:48,366 INFO L225 Difference]: With dead ends: 923 [2023-12-21 17:51:48,366 INFO L226 Difference]: Without dead ends: 829 [2023-12-21 17:51:48,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15267 ImplicationChecksByTransitivity, 164.2s TimeCoverageRelationStatistics Valid=11601, Invalid=37905, Unknown=0, NotChecked=0, Total=49506 [2023-12-21 17:51:48,369 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 2224 mSDsluCounter, 8352 mSDsCounter, 0 mSdLazyCounter, 9719 mSolverCounterSat, 416 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2224 SdHoareTripleChecker+Valid, 8502 SdHoareTripleChecker+Invalid, 10135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 416 IncrementalHoareTripleChecker+Valid, 9719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2023-12-21 17:51:48,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2224 Valid, 8502 Invalid, 10135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [416 Valid, 9719 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2023-12-21 17:51:48,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2023-12-21 17:51:48,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 465. [2023-12-21 17:51:48,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 464 states have (on average 1.2629310344827587) internal successors, (586), 464 states have internal predecessors, (586), 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) [2023-12-21 17:51:48,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 586 transitions. [2023-12-21 17:51:48,812 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 586 transitions. Word has length 183 [2023-12-21 17:51:48,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:51:48,812 INFO L495 AbstractCegarLoop]: Abstraction has 465 states and 586 transitions. [2023-12-21 17:51:48,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 130 states, 130 states have (on average 2.792307692307692) internal successors, (363), 130 states have internal predecessors, (363), 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) [2023-12-21 17:51:48,813 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 586 transitions. [2023-12-21 17:51:48,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2023-12-21 17:51:48,813 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:51:48,813 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:51:48,823 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 (65)] Forceful destruction successful, exit code 0 [2023-12-21 17:51:49,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /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 [2023-12-21 17:51:49,014 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:51:49,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:51:49,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1726889457, now seen corresponding path program 58 times [2023-12-21 17:51:49,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:51:49,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [541352010] [2023-12-21 17:51:49,015 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 17:51:49,015 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 [2023-12-21 17:51:49,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:51:49,016 INFO L229 MonitoredProcess]: Starting monitored process 66 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) [2023-12-21 17:51:49,019 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 (66)] Waiting until timeout for monitored process [2023-12-21 17:51:49,395 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 17:51:49,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:51:49,410 INFO L262 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 66 conjunts are in the unsatisfiable core [2023-12-21 17:51:49,412 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:51:49,811 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-21 17:51:51,606 INFO L134 CoverageAnalysis]: Checked inductivity of 2611 backedges. 0 proven. 2611 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:51:51,606 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:51:54,958 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2023-12-21 17:51:54,960 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-12-21 17:51:57,392 INFO L134 CoverageAnalysis]: Checked inductivity of 2611 backedges. 0 proven. 2611 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:51:57,392 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:51:57,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [541352010] [2023-12-21 17:51:57,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [541352010] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:51:57,392 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:51:57,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 125 [2023-12-21 17:51:57,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275366270] [2023-12-21 17:51:57,393 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:51:57,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 125 states [2023-12-21 17:51:57,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:51:57,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2023-12-21 17:51:57,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=398, Invalid=15102, Unknown=0, NotChecked=0, Total=15500 [2023-12-21 17:51:57,397 INFO L87 Difference]: Start difference. First operand 465 states and 586 transitions. Second operand has 125 states, 125 states have (on average 2.928) internal successors, (366), 125 states have internal predecessors, (366), 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) [2023-12-21 17:52:12,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:52:12,716 INFO L93 Difference]: Finished difference Result 781 states and 951 transitions. [2023-12-21 17:52:12,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2023-12-21 17:52:12,717 INFO L78 Accepts]: Start accepts. Automaton has has 125 states, 125 states have (on average 2.928) internal successors, (366), 125 states have internal predecessors, (366), 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 186 [2023-12-21 17:52:12,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:52:12,718 INFO L225 Difference]: With dead ends: 781 [2023-12-21 17:52:12,718 INFO L226 Difference]: Without dead ends: 779 [2023-12-21 17:52:12,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 461 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10919 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=1004, Invalid=45436, Unknown=0, NotChecked=0, Total=46440 [2023-12-21 17:52:12,720 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 187 mSDsluCounter, 7524 mSDsCounter, 0 mSdLazyCounter, 13278 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 7621 SdHoareTripleChecker+Invalid, 13415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 13278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2023-12-21 17:52:12,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 7621 Invalid, 13415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 13278 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2023-12-21 17:52:12,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2023-12-21 17:52:13,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 468. [2023-12-21 17:52:13,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 467 states have (on average 1.2612419700214133) internal successors, (589), 467 states have internal predecessors, (589), 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) [2023-12-21 17:52:13,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 589 transitions. [2023-12-21 17:52:13,175 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 589 transitions. Word has length 186 [2023-12-21 17:52:13,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:52:13,175 INFO L495 AbstractCegarLoop]: Abstraction has 468 states and 589 transitions. [2023-12-21 17:52:13,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 125 states, 125 states have (on average 2.928) internal successors, (366), 125 states have internal predecessors, (366), 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) [2023-12-21 17:52:13,175 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 589 transitions. [2023-12-21 17:52:13,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-12-21 17:52:13,176 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:52:13,176 INFO L195 NwaCegarLoop]: trace histogram [31, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:52:13,182 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 (66)] Forceful destruction successful, exit code 0 [2023-12-21 17:52:13,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /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 [2023-12-21 17:52:13,376 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:52:13,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:52:13,377 INFO L85 PathProgramCache]: Analyzing trace with hash -640436718, now seen corresponding path program 59 times [2023-12-21 17:52:13,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:52:13,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1533777424] [2023-12-21 17:52:13,377 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 17:52:13,377 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 [2023-12-21 17:52:13,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:52:13,378 INFO L229 MonitoredProcess]: Starting monitored process 67 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) [2023-12-21 17:52:13,381 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 (67)] Waiting until timeout for monitored process [2023-12-21 17:52:14,065 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2023-12-21 17:52:14,065 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:52:14,079 INFO L262 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 73 conjunts are in the unsatisfiable core [2023-12-21 17:52:14,082 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:52:17,054 INFO L134 CoverageAnalysis]: Checked inductivity of 2700 backedges. 30 proven. 2670 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:52:17,055 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:53:09,278 INFO L134 CoverageAnalysis]: Checked inductivity of 2700 backedges. 48 proven. 2652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:53:09,278 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:53:09,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1533777424] [2023-12-21 17:53:09,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1533777424] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:53:09,279 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:53:09,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 70] total 140 [2023-12-21 17:53:09,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674783203] [2023-12-21 17:53:09,279 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:53:09,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 140 states [2023-12-21 17:53:09,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:53:09,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2023-12-21 17:53:09,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2822, Invalid=16638, Unknown=0, NotChecked=0, Total=19460 [2023-12-21 17:53:09,281 INFO L87 Difference]: Start difference. First operand 468 states and 589 transitions. Second operand has 140 states, 140 states have (on average 2.6785714285714284) internal successors, (375), 140 states have internal predecessors, (375), 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) [2023-12-21 17:53:20,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:53:20,744 INFO L93 Difference]: Finished difference Result 875 states and 1045 transitions. [2023-12-21 17:53:20,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2023-12-21 17:53:20,745 INFO L78 Accepts]: Start accepts. Automaton has has 140 states, 140 states have (on average 2.6785714285714284) internal successors, (375), 140 states have internal predecessors, (375), 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 189 [2023-12-21 17:53:20,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:53:20,747 INFO L225 Difference]: With dead ends: 875 [2023-12-21 17:53:20,747 INFO L226 Difference]: Without dead ends: 778 [2023-12-21 17:53:20,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7755 ImplicationChecksByTransitivity, 49.5s TimeCoverageRelationStatistics Valid=2984, Invalid=17608, Unknown=0, NotChecked=0, Total=20592 [2023-12-21 17:53:20,748 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 1271 mSDsluCounter, 6570 mSDsCounter, 0 mSdLazyCounter, 11834 mSolverCounterSat, 342 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1271 SdHoareTripleChecker+Valid, 6665 SdHoareTripleChecker+Invalid, 12176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 342 IncrementalHoareTripleChecker+Valid, 11834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2023-12-21 17:53:20,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1271 Valid, 6665 Invalid, 12176 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [342 Valid, 11834 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time] [2023-12-21 17:53:20,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2023-12-21 17:53:21,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 468. [2023-12-21 17:53:21,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 467 states have (on average 1.259100642398287) internal successors, (588), 467 states have internal predecessors, (588), 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) [2023-12-21 17:53:21,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 588 transitions. [2023-12-21 17:53:21,208 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 588 transitions. Word has length 189 [2023-12-21 17:53:21,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:53:21,208 INFO L495 AbstractCegarLoop]: Abstraction has 468 states and 588 transitions. [2023-12-21 17:53:21,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 140 states, 140 states have (on average 2.6785714285714284) internal successors, (375), 140 states have internal predecessors, (375), 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) [2023-12-21 17:53:21,209 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 588 transitions. [2023-12-21 17:53:21,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-12-21 17:53:21,209 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:53:21,209 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 31, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 17:53:21,220 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 (67)] Forceful destruction successful, exit code 0 [2023-12-21 17:53:21,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /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 [2023-12-21 17:53:21,410 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:53:21,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:53:21,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1700901938, now seen corresponding path program 60 times [2023-12-21 17:53:21,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:53:21,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [59884581] [2023-12-21 17:53:21,411 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 17:53:21,411 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 [2023-12-21 17:53:21,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:53:21,412 INFO L229 MonitoredProcess]: Starting monitored process 68 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) [2023-12-21 17:53:21,412 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 (68)] Waiting until timeout for monitored process [2023-12-21 17:53:22,475 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 32 check-sat command(s) [2023-12-21 17:53:22,475 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 17:53:22,490 INFO L262 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 68 conjunts are in the unsatisfiable core [2023-12-21 17:53:22,492 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:53:22,929 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-21 17:53:24,775 INFO L134 CoverageAnalysis]: Checked inductivity of 2791 backedges. 0 proven. 2791 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:53:24,775 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:53:28,258 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2023-12-21 17:53:28,259 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-12-21 17:53:30,779 INFO L134 CoverageAnalysis]: Checked inductivity of 2791 backedges. 0 proven. 2791 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:53:30,780 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:53:30,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [59884581] [2023-12-21 17:53:30,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [59884581] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:53:30,780 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:53:30,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 129 [2023-12-21 17:53:30,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643416187] [2023-12-21 17:53:30,780 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:53:30,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 129 states [2023-12-21 17:53:30,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:53:30,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2023-12-21 17:53:30,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=411, Invalid=16101, Unknown=0, NotChecked=0, Total=16512 [2023-12-21 17:53:30,782 INFO L87 Difference]: Start difference. First operand 468 states and 588 transitions. Second operand has 129 states, 129 states have (on average 2.9302325581395348) internal successors, (378), 129 states have internal predecessors, (378), 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) Received shutdown request... [2023-12-21 17:53:37,061 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 [2023-12-21 17:53:37,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-12-21 17:53:37,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5707 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=556, Invalid=24250, Unknown=0, NotChecked=0, Total=24806 [2023-12-21 17:53:37,080 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 7673 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 7702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 7673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-12-21 17:53:37,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 179 Invalid, 7702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 7673 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-12-21 17:53:37,081 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 17:53:37,082 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 (68)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 17:53:37,089 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 (68)] Forceful destruction successful, exit code 0 [2023-12-21 17:53:37,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /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 [2023-12-21 17:53:37,283 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (468states) and FLOYD_HOARE automaton (currently 61 states, 129 states before enhancement),while ReachableStatesComputation was computing reachable states (91 states constructed, input type IntersectNwa). [2023-12-21 17:53:37,286 INFO L445 BasicCegarLoop]: Path program histogram: [60, 4, 1, 1, 1] [2023-12-21 17:53:37,287 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 17:53:37,290 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 05:53:37 BoogieIcfgContainer [2023-12-21 17:53:37,290 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 17:53:37,290 INFO L158 Benchmark]: Toolchain (without parser) took 860699.62ms. Allocated memory was 187.7MB in the beginning and 407.9MB in the end (delta: 220.2MB). Free memory was 146.4MB in the beginning and 113.6MB in the end (delta: 32.8MB). Peak memory consumption was 254.4MB. Max. memory is 8.0GB. [2023-12-21 17:53:37,290 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 187.7MB. Free memory is still 142.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 17:53:37,290 INFO L158 Benchmark]: CACSL2BoogieTranslator took 170.77ms. Allocated memory is still 187.7MB. Free memory was 146.4MB in the beginning and 134.9MB in the end (delta: 11.6MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-21 17:53:37,290 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.28ms. Allocated memory is still 187.7MB. Free memory was 134.9MB in the beginning and 133.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 17:53:37,291 INFO L158 Benchmark]: Boogie Preprocessor took 27.39ms. Allocated memory is still 187.7MB. Free memory was 133.2MB in the beginning and 131.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 17:53:37,291 INFO L158 Benchmark]: RCFGBuilder took 253.73ms. Allocated memory is still 187.7MB. Free memory was 131.2MB in the beginning and 117.5MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-21 17:53:37,291 INFO L158 Benchmark]: TraceAbstraction took 860222.56ms. Allocated memory was 187.7MB in the beginning and 407.9MB in the end (delta: 220.2MB). Free memory was 116.9MB in the beginning and 113.6MB in the end (delta: 3.3MB). Peak memory consumption was 225.0MB. Max. memory is 8.0GB. [2023-12-21 17:53:37,293 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 187.7MB. Free memory is still 142.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 170.77ms. Allocated memory is still 187.7MB. Free memory was 146.4MB in the beginning and 134.9MB in the end (delta: 11.6MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 20.28ms. Allocated memory is still 187.7MB. Free memory was 134.9MB in the beginning and 133.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 27.39ms. Allocated memory is still 187.7MB. Free memory was 133.2MB in the beginning and 131.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 253.73ms. Allocated memory is still 187.7MB. Free memory was 131.2MB in the beginning and 117.5MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 860222.56ms. Allocated memory was 187.7MB in the beginning and 407.9MB in the end (delta: 220.2MB). Free memory was 116.9MB in the beginning and 113.6MB in the end (delta: 3.3MB). Peak memory consumption was 225.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 8]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 8). Cancelled while NwaCegarLoop was constructing difference of abstraction (468states) and FLOYD_HOARE automaton (currently 61 states, 129 states before enhancement),while ReachableStatesComputation was computing reachable states (91 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 860.2s, OverallIterations: 67, TraceHistogramMax: 31, PathProgramHistogramMax: 60, EmptinessCheckTime: 0.0s, AutomataDifference: 491.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 25999 SdHoareTripleChecker+Valid, 157.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 25999 mSDsluCounter, 156028 SdHoareTripleChecker+Invalid, 134.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 152481 mSDsCounter, 8766 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 273722 IncrementalHoareTripleChecker+Invalid, 282488 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8766 mSolverCounterUnsat, 3547 mSDtfsCounter, 273722 mSolverCounterSat, 0.9s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14592 GetRequests, 8352 SyntacticMatches, 0 SemanticMatches, 6240 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213457 ImplicationChecksByTransitivity, 596.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=468occurred in iteration=65, InterpolantAutomatonStates: 4188, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 7.7s AutomataMinimizationTime, 66 MinimizatonAttempts, 8260 StatesRemovedByMinimization, 65 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.8s SsaConstructionTime, 12.0s SatisfiabilityAnalysisTime, 331.7s InterpolantComputationTime, 6444 NumberOfCodeBlocks, 6444 NumberOfCodeBlocksAsserted, 588 NumberOfCheckSat, 12738 ConstructedInterpolants, 0 QuantifiedInterpolants, 118805 SizeOfPredicates, 407 NumberOfNonLiveVariables, 14429 ConjunctsInSsa, 2482 ConjunctsInUnsatCore, 132 InterpolantComputations, 2 PerfectInterpolantSequences, 1205/119988 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