/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/seq-mthreaded/pals_lcr.6.1.ufo.BOUNDED-12.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-25 07:50:32,374 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-25 07:50:32,411 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-25 07:50:32,414 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-25 07:50:32,414 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-25 07:50:32,427 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-25 07:50:32,428 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-25 07:50:32,428 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-25 07:50:32,428 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-25 07:50:32,428 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-25 07:50:32,429 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-25 07:50:32,429 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-25 07:50:32,429 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-25 07:50:32,430 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-25 07:50:32,430 INFO L153 SettingsManager]: * Use SBE=true [2023-12-25 07:50:32,430 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-25 07:50:32,430 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-25 07:50:32,431 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-25 07:50:32,431 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-25 07:50:32,431 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-25 07:50:32,431 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-25 07:50:32,432 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-25 07:50:32,432 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-25 07:50:32,432 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-25 07:50:32,432 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-25 07:50:32,433 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-25 07:50:32,433 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-25 07:50:32,433 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-25 07:50:32,433 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-25 07:50:32,434 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-25 07:50:32,434 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-25 07:50:32,434 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-25 07:50:32,434 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-25 07:50:32,434 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-25 07:50:32,435 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 07:50:32,435 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-25 07:50:32,435 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-25 07:50:32,435 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-25 07:50:32,435 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-25 07:50:32,436 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-25 07:50:32,436 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-25 07:50:32,436 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-25 07:50:32,436 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-25 07:50:32,436 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-25 07:50:32,436 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-25 07:50:32,437 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-25 07:50:32,437 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-25 07:50:32,615 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-25 07:50:32,628 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-25 07:50:32,629 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-25 07:50:32,630 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-25 07:50:32,631 INFO L274 PluginConnector]: CDTParser initialized [2023-12-25 07:50:32,632 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr.6.1.ufo.BOUNDED-12.pals.c [2023-12-25 07:50:33,662 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-25 07:50:33,818 INFO L384 CDTParser]: Found 1 translation units. [2023-12-25 07:50:33,819 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr.6.1.ufo.BOUNDED-12.pals.c [2023-12-25 07:50:33,825 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/deb3d8af6/87163c284b2f4da983daa2f23bd59082/FLAG851b6425a [2023-12-25 07:50:33,838 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/deb3d8af6/87163c284b2f4da983daa2f23bd59082 [2023-12-25 07:50:33,840 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-25 07:50:33,840 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-25 07:50:33,843 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-25 07:50:33,843 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-25 07:50:33,846 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-25 07:50:33,847 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 07:50:33" (1/1) ... [2023-12-25 07:50:33,847 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e0899e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:50:33, skipping insertion in model container [2023-12-25 07:50:33,848 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 07:50:33" (1/1) ... [2023-12-25 07:50:33,885 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-25 07:50:34,039 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr.6.1.ufo.BOUNDED-12.pals.c[15112,15125] [2023-12-25 07:50:34,042 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 07:50:34,051 INFO L202 MainTranslator]: Completed pre-run [2023-12-25 07:50:34,094 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr.6.1.ufo.BOUNDED-12.pals.c[15112,15125] [2023-12-25 07:50:34,095 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 07:50:34,106 INFO L206 MainTranslator]: Completed translation [2023-12-25 07:50:34,106 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:50:34 WrapperNode [2023-12-25 07:50:34,106 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-25 07:50:34,107 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-25 07:50:34,107 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-25 07:50:34,107 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-25 07:50:34,111 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:50:34" (1/1) ... [2023-12-25 07:50:34,124 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:50:34" (1/1) ... [2023-12-25 07:50:34,150 INFO L138 Inliner]: procedures = 25, calls = 17, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 372 [2023-12-25 07:50:34,151 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-25 07:50:34,151 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-25 07:50:34,151 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-25 07:50:34,151 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-25 07:50:34,159 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:50:34" (1/1) ... [2023-12-25 07:50:34,159 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:50:34" (1/1) ... [2023-12-25 07:50:34,163 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:50:34" (1/1) ... [2023-12-25 07:50:34,173 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-25 07:50:34,173 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:50:34" (1/1) ... [2023-12-25 07:50:34,173 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:50:34" (1/1) ... [2023-12-25 07:50:34,180 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:50:34" (1/1) ... [2023-12-25 07:50:34,190 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:50:34" (1/1) ... [2023-12-25 07:50:34,192 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:50:34" (1/1) ... [2023-12-25 07:50:34,194 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:50:34" (1/1) ... [2023-12-25 07:50:34,196 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-25 07:50:34,198 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-25 07:50:34,198 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-25 07:50:34,198 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-25 07:50:34,199 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:50:34" (1/1) ... [2023-12-25 07:50:34,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 07:50:34,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 07:50:34,261 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) [2023-12-25 07:50:34,295 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 [2023-12-25 07:50:34,302 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-25 07:50:34,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-25 07:50:34,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-25 07:50:34,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-25 07:50:34,399 INFO L241 CfgBuilder]: Building ICFG [2023-12-25 07:50:34,403 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-25 07:50:34,760 INFO L282 CfgBuilder]: Performing block encoding [2023-12-25 07:50:34,781 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-25 07:50:34,781 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-25 07:50:34,781 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 07:50:34 BoogieIcfgContainer [2023-12-25 07:50:34,781 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-25 07:50:34,782 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-25 07:50:34,783 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-25 07:50:34,785 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-25 07:50:34,785 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.12 07:50:33" (1/3) ... [2023-12-25 07:50:34,785 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d2067dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 07:50:34, skipping insertion in model container [2023-12-25 07:50:34,785 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:50:34" (2/3) ... [2023-12-25 07:50:34,785 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d2067dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 07:50:34, skipping insertion in model container [2023-12-25 07:50:34,785 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 07:50:34" (3/3) ... [2023-12-25 07:50:34,786 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.1.ufo.BOUNDED-12.pals.c [2023-12-25 07:50:34,797 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-25 07:50:34,797 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-25 07:50:34,827 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-25 07:50:34,831 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;@4489f13, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-25 07:50:34,831 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-25 07:50:34,834 INFO L276 IsEmpty]: Start isEmpty. Operand has 93 states, 91 states have (on average 1.8131868131868132) internal successors, (165), 92 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:50:34,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-25 07:50:34,839 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:50:34,839 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:50:34,839 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:50:34,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:50:34,843 INFO L85 PathProgramCache]: Analyzing trace with hash -644629225, now seen corresponding path program 1 times [2023-12-25 07:50:34,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:50:34,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [243026678] [2023-12-25 07:50:34,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:50:34,851 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 [2023-12-25 07:50:34,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:50:34,856 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) [2023-12-25 07:50:34,857 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 [2023-12-25 07:50:34,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:50:34,956 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-25 07:50:34,959 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:50:34,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:50:34,977 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:50:34,977 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:50:34,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [243026678] [2023-12-25 07:50:34,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [243026678] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:50:34,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:50:34,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-25 07:50:34,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104294050] [2023-12-25 07:50:34,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:50:34,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-25 07:50:34,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:50:35,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-25 07:50:35,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-25 07:50:35,017 INFO L87 Difference]: Start difference. First operand has 93 states, 91 states have (on average 1.8131868131868132) internal successors, (165), 92 states have internal predecessors, (165), 0 states have call successors, (0), 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 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:50:35,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:50:35,051 INFO L93 Difference]: Finished difference Result 143 states and 246 transitions. [2023-12-25 07:50:35,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-25 07:50:35,053 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-12-25 07:50:35,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:50:35,060 INFO L225 Difference]: With dead ends: 143 [2023-12-25 07:50:35,060 INFO L226 Difference]: Without dead ends: 91 [2023-12-25 07:50:35,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-25 07:50:35,066 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:50:35,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 158 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:50:35,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-12-25 07:50:35,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2023-12-25 07:50:35,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.7777777777777777) internal successors, (160), 90 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:50:35,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 160 transitions. [2023-12-25 07:50:35,108 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 160 transitions. Word has length 22 [2023-12-25 07:50:35,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:50:35,109 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 160 transitions. [2023-12-25 07:50:35,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:50:35,109 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 160 transitions. [2023-12-25 07:50:35,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-25 07:50:35,111 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:50:35,112 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:50:35,130 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 [2023-12-25 07:50:35,314 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 [2023-12-25 07:50:35,315 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:50:35,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:50:35,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1961394329, now seen corresponding path program 1 times [2023-12-25 07:50:35,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:50:35,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1536009837] [2023-12-25 07:50:35,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:50:35,317 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 [2023-12-25 07:50:35,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:50:35,318 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) [2023-12-25 07:50:35,322 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 [2023-12-25 07:50:35,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:50:35,378 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 07:50:35,379 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:50:35,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:50:35,416 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:50:35,416 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:50:35,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1536009837] [2023-12-25 07:50:35,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1536009837] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:50:35,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:50:35,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 07:50:35,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023940952] [2023-12-25 07:50:35,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:50:35,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 07:50:35,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:50:35,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 07:50:35,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 07:50:35,419 INFO L87 Difference]: Start difference. First operand 91 states and 160 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:50:35,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:50:35,496 INFO L93 Difference]: Finished difference Result 141 states and 239 transitions. [2023-12-25 07:50:35,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 07:50:35,497 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-12-25 07:50:35,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:50:35,498 INFO L225 Difference]: With dead ends: 141 [2023-12-25 07:50:35,498 INFO L226 Difference]: Without dead ends: 91 [2023-12-25 07:50:35,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 07:50:35,500 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 0 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 07:50:35,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 428 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 07:50:35,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-12-25 07:50:35,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2023-12-25 07:50:35,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.3333333333333333) internal successors, (120), 90 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:50:35,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 120 transitions. [2023-12-25 07:50:35,505 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 120 transitions. Word has length 22 [2023-12-25 07:50:35,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:50:35,505 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 120 transitions. [2023-12-25 07:50:35,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:50:35,505 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 120 transitions. [2023-12-25 07:50:35,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-25 07:50:35,508 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:50:35,509 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:50:35,513 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 (3)] Forceful destruction successful, exit code 0 [2023-12-25 07:50:35,711 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 [2023-12-25 07:50:35,711 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:50:35,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:50:35,712 INFO L85 PathProgramCache]: Analyzing trace with hash 551736366, now seen corresponding path program 1 times [2023-12-25 07:50:35,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:50:35,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [139463120] [2023-12-25 07:50:35,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:50:35,713 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 [2023-12-25 07:50:35,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:50:35,714 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) [2023-12-25 07:50:35,722 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 [2023-12-25 07:50:35,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:50:35,788 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-25 07:50:35,791 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:50:36,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:50:36,631 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:50:36,632 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:50:36,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [139463120] [2023-12-25 07:50:36,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [139463120] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:50:36,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:50:36,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-25 07:50:36,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082504912] [2023-12-25 07:50:36,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:50:36,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-25 07:50:36,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:50:36,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-25 07:50:36,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-12-25 07:50:36,643 INFO L87 Difference]: Start difference. First operand 91 states and 120 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:50:36,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:50:36,866 INFO L93 Difference]: Finished difference Result 420 states and 652 transitions. [2023-12-25 07:50:36,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 07:50:36,867 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-12-25 07:50:36,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:50:36,869 INFO L225 Difference]: With dead ends: 420 [2023-12-25 07:50:36,869 INFO L226 Difference]: Without dead ends: 373 [2023-12-25 07:50:36,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-12-25 07:50:36,870 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 547 mSDsluCounter, 682 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 547 SdHoareTripleChecker+Valid, 796 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 07:50:36,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [547 Valid, 796 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 07:50:36,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2023-12-25 07:50:36,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 181. [2023-12-25 07:50:36,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 1.4833333333333334) internal successors, (267), 180 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) [2023-12-25 07:50:36,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 267 transitions. [2023-12-25 07:50:36,881 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 267 transitions. Word has length 61 [2023-12-25 07:50:36,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:50:36,881 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 267 transitions. [2023-12-25 07:50:36,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:50:36,882 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 267 transitions. [2023-12-25 07:50:36,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-25 07:50:36,882 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:50:36,882 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:50:36,885 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 [2023-12-25 07:50:37,085 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 [2023-12-25 07:50:37,085 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:50:37,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:50:37,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1177047518, now seen corresponding path program 1 times [2023-12-25 07:50:37,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:50:37,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1382022384] [2023-12-25 07:50:37,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:50:37,086 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 [2023-12-25 07:50:37,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:50:37,100 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) [2023-12-25 07:50:37,103 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 [2023-12-25 07:50:37,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:50:37,163 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:50:37,166 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:50:37,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:50:37,237 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:50:37,237 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:50:37,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1382022384] [2023-12-25 07:50:37,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1382022384] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:50:37,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:50:37,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:50:37,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874895918] [2023-12-25 07:50:37,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:50:37,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:50:37,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:50:37,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:50:37,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:50:37,238 INFO L87 Difference]: Start difference. First operand 181 states and 267 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 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) [2023-12-25 07:50:37,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:50:37,256 INFO L93 Difference]: Finished difference Result 439 states and 685 transitions. [2023-12-25 07:50:37,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:50:37,256 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 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 63 [2023-12-25 07:50:37,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:50:37,257 INFO L225 Difference]: With dead ends: 439 [2023-12-25 07:50:37,257 INFO L226 Difference]: Without dead ends: 302 [2023-12-25 07:50:37,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:50:37,258 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 50 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:50:37,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 186 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:50:37,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2023-12-25 07:50:37,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 300. [2023-12-25 07:50:37,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 299 states have (on average 1.5250836120401339) internal successors, (456), 299 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:50:37,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 456 transitions. [2023-12-25 07:50:37,268 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 456 transitions. Word has length 63 [2023-12-25 07:50:37,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:50:37,268 INFO L495 AbstractCegarLoop]: Abstraction has 300 states and 456 transitions. [2023-12-25 07:50:37,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 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) [2023-12-25 07:50:37,268 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 456 transitions. [2023-12-25 07:50:37,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-25 07:50:37,269 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:50:37,269 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:50:37,286 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-12-25 07:50:37,487 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 [2023-12-25 07:50:37,487 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:50:37,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:50:37,488 INFO L85 PathProgramCache]: Analyzing trace with hash -2113811586, now seen corresponding path program 1 times [2023-12-25 07:50:37,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:50:37,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [265370604] [2023-12-25 07:50:37,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:50:37,488 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 [2023-12-25 07:50:37,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:50:37,489 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) [2023-12-25 07:50:37,492 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 [2023-12-25 07:50:37,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:50:37,552 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 07:50:37,553 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:50:37,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:50:37,568 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:50:37,568 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:50:37,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [265370604] [2023-12-25 07:50:37,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [265370604] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:50:37,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:50:37,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 07:50:37,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511401837] [2023-12-25 07:50:37,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:50:37,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 07:50:37,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:50:37,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 07:50:37,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 07:50:37,569 INFO L87 Difference]: Start difference. First operand 300 states and 456 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:50:37,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:50:37,594 INFO L93 Difference]: Finished difference Result 314 states and 473 transitions. [2023-12-25 07:50:37,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 07:50:37,595 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-12-25 07:50:37,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:50:37,596 INFO L225 Difference]: With dead ends: 314 [2023-12-25 07:50:37,596 INFO L226 Difference]: Without dead ends: 312 [2023-12-25 07:50:37,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 07:50:37,597 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 1 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:50:37,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 340 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:50:37,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2023-12-25 07:50:37,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 308. [2023-12-25 07:50:37,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 307 states have (on average 1.50814332247557) internal successors, (463), 307 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:50:37,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 463 transitions. [2023-12-25 07:50:37,603 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 463 transitions. Word has length 64 [2023-12-25 07:50:37,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:50:37,604 INFO L495 AbstractCegarLoop]: Abstraction has 308 states and 463 transitions. [2023-12-25 07:50:37,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:50:37,604 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 463 transitions. [2023-12-25 07:50:37,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-25 07:50:37,605 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:50:37,605 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:50:37,629 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 [2023-12-25 07:50:37,811 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 [2023-12-25 07:50:37,811 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:50:37,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:50:37,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1651742026, now seen corresponding path program 1 times [2023-12-25 07:50:37,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:50:37,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [276524235] [2023-12-25 07:50:37,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:50:37,812 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 [2023-12-25 07:50:37,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:50:37,814 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) [2023-12-25 07:50:37,816 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 [2023-12-25 07:50:37,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:50:37,875 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:50:37,876 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:50:37,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:50:37,932 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:50:37,932 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:50:37,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [276524235] [2023-12-25 07:50:37,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [276524235] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:50:37,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:50:37,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:50:37,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992315149] [2023-12-25 07:50:37,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:50:37,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:50:37,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:50:37,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:50:37,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:50:37,934 INFO L87 Difference]: Start difference. First operand 308 states and 463 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:50:37,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:50:37,946 INFO L93 Difference]: Finished difference Result 584 states and 903 transitions. [2023-12-25 07:50:37,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:50:37,946 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2023-12-25 07:50:37,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:50:37,948 INFO L225 Difference]: With dead ends: 584 [2023-12-25 07:50:37,948 INFO L226 Difference]: Without dead ends: 441 [2023-12-25 07:50:37,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:50:37,949 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 66 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:50:37,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 253 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:50:37,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2023-12-25 07:50:37,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 439. [2023-12-25 07:50:37,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 438 states have (on average 1.5273972602739727) internal successors, (669), 438 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:50:37,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 669 transitions. [2023-12-25 07:50:37,956 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 669 transitions. Word has length 65 [2023-12-25 07:50:37,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:50:37,956 INFO L495 AbstractCegarLoop]: Abstraction has 439 states and 669 transitions. [2023-12-25 07:50:37,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:50:37,957 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 669 transitions. [2023-12-25 07:50:37,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-25 07:50:37,957 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:50:37,957 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:50:37,962 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 [2023-12-25 07:50:38,162 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 [2023-12-25 07:50:38,162 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:50:38,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:50:38,163 INFO L85 PathProgramCache]: Analyzing trace with hash -2062128714, now seen corresponding path program 1 times [2023-12-25 07:50:38,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:50:38,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [791457787] [2023-12-25 07:50:38,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:50:38,163 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 [2023-12-25 07:50:38,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:50:38,165 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) [2023-12-25 07:50:38,165 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 [2023-12-25 07:50:38,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:50:38,219 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:50:38,221 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:50:38,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:50:38,259 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:50:38,259 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:50:38,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [791457787] [2023-12-25 07:50:38,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [791457787] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:50:38,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:50:38,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:50:38,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684977811] [2023-12-25 07:50:38,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:50:38,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:50:38,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:50:38,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:50:38,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:50:38,261 INFO L87 Difference]: Start difference. First operand 439 states and 669 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:50:38,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:50:38,275 INFO L93 Difference]: Finished difference Result 1189 states and 1852 transitions. [2023-12-25 07:50:38,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:50:38,276 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2023-12-25 07:50:38,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:50:38,278 INFO L225 Difference]: With dead ends: 1189 [2023-12-25 07:50:38,278 INFO L226 Difference]: Without dead ends: 796 [2023-12-25 07:50:38,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:50:38,279 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 64 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:50:38,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 259 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:50:38,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2023-12-25 07:50:38,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 794. [2023-12-25 07:50:38,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 794 states, 793 states have (on average 1.5372005044136192) internal successors, (1219), 793 states have internal predecessors, (1219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:50:38,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1219 transitions. [2023-12-25 07:50:38,292 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1219 transitions. Word has length 65 [2023-12-25 07:50:38,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:50:38,292 INFO L495 AbstractCegarLoop]: Abstraction has 794 states and 1219 transitions. [2023-12-25 07:50:38,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:50:38,292 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1219 transitions. [2023-12-25 07:50:38,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-25 07:50:38,292 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:50:38,293 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:50:38,298 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 [2023-12-25 07:50:38,499 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 [2023-12-25 07:50:38,499 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:50:38,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:50:38,499 INFO L85 PathProgramCache]: Analyzing trace with hash 2004199350, now seen corresponding path program 1 times [2023-12-25 07:50:38,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:50:38,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1614824082] [2023-12-25 07:50:38,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:50:38,500 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 [2023-12-25 07:50:38,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:50:38,501 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) [2023-12-25 07:50:38,520 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 [2023-12-25 07:50:38,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:50:38,556 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:50:38,557 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:50:38,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:50:38,601 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:50:38,601 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:50:38,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1614824082] [2023-12-25 07:50:38,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1614824082] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:50:38,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:50:38,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:50:38,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783536739] [2023-12-25 07:50:38,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:50:38,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:50:38,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:50:38,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:50:38,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:50:38,603 INFO L87 Difference]: Start difference. First operand 794 states and 1219 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:50:38,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:50:38,625 INFO L93 Difference]: Finished difference Result 2218 states and 3439 transitions. [2023-12-25 07:50:38,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:50:38,626 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2023-12-25 07:50:38,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:50:38,630 INFO L225 Difference]: With dead ends: 2218 [2023-12-25 07:50:38,630 INFO L226 Difference]: Without dead ends: 1470 [2023-12-25 07:50:38,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:50:38,634 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 60 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:50:38,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 255 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:50:38,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1470 states. [2023-12-25 07:50:38,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1470 to 1468. [2023-12-25 07:50:38,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1468 states, 1467 states have (on average 1.5316973415132924) internal successors, (2247), 1467 states have internal predecessors, (2247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:50:38,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1468 states to 1468 states and 2247 transitions. [2023-12-25 07:50:38,657 INFO L78 Accepts]: Start accepts. Automaton has 1468 states and 2247 transitions. Word has length 65 [2023-12-25 07:50:38,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:50:38,657 INFO L495 AbstractCegarLoop]: Abstraction has 1468 states and 2247 transitions. [2023-12-25 07:50:38,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:50:38,657 INFO L276 IsEmpty]: Start isEmpty. Operand 1468 states and 2247 transitions. [2023-12-25 07:50:38,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-25 07:50:38,658 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:50:38,658 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:50:38,676 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-25 07:50:38,861 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 [2023-12-25 07:50:38,861 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:50:38,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:50:38,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1378543286, now seen corresponding path program 1 times [2023-12-25 07:50:38,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:50:38,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [832944907] [2023-12-25 07:50:38,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:50:38,863 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 [2023-12-25 07:50:38,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:50:38,864 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) [2023-12-25 07:50:38,892 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 [2023-12-25 07:50:38,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:50:38,961 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:50:38,962 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:50:38,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:50:38,993 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:50:38,993 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:50:38,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [832944907] [2023-12-25 07:50:38,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [832944907] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:50:38,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:50:38,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:50:38,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127590114] [2023-12-25 07:50:38,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:50:38,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:50:38,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:50:38,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:50:38,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:50:38,994 INFO L87 Difference]: Start difference. First operand 1468 states and 2247 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:50:39,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:50:39,025 INFO L93 Difference]: Finished difference Result 4168 states and 6397 transitions. [2023-12-25 07:50:39,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:50:39,026 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2023-12-25 07:50:39,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:50:39,032 INFO L225 Difference]: With dead ends: 4168 [2023-12-25 07:50:39,032 INFO L226 Difference]: Without dead ends: 2746 [2023-12-25 07:50:39,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:50:39,034 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 58 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:50:39,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 257 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:50:39,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2746 states. [2023-12-25 07:50:39,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2746 to 2744. [2023-12-25 07:50:39,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2744 states, 2743 states have (on average 1.5162231133795114) internal successors, (4159), 2743 states have internal predecessors, (4159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:50:39,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2744 states to 2744 states and 4159 transitions. [2023-12-25 07:50:39,083 INFO L78 Accepts]: Start accepts. Automaton has 2744 states and 4159 transitions. Word has length 65 [2023-12-25 07:50:39,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:50:39,083 INFO L495 AbstractCegarLoop]: Abstraction has 2744 states and 4159 transitions. [2023-12-25 07:50:39,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:50:39,083 INFO L276 IsEmpty]: Start isEmpty. Operand 2744 states and 4159 transitions. [2023-12-25 07:50:39,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-25 07:50:39,083 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:50:39,084 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:50:39,090 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 (10)] Ended with exit code 0 [2023-12-25 07:50:39,286 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 [2023-12-25 07:50:39,287 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:50:39,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:50:39,287 INFO L85 PathProgramCache]: Analyzing trace with hash -2027690570, now seen corresponding path program 1 times [2023-12-25 07:50:39,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:50:39,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1458948793] [2023-12-25 07:50:39,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:50:39,288 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 [2023-12-25 07:50:39,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:50:39,292 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) [2023-12-25 07:50:39,322 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 [2023-12-25 07:50:39,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:50:39,352 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:50:39,353 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:50:39,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:50:39,388 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:50:39,388 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:50:39,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1458948793] [2023-12-25 07:50:39,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1458948793] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:50:39,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:50:39,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:50:39,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724970048] [2023-12-25 07:50:39,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:50:39,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:50:39,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:50:39,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:50:39,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:50:39,390 INFO L87 Difference]: Start difference. First operand 2744 states and 4159 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:50:39,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:50:39,476 INFO L93 Difference]: Finished difference Result 7852 states and 11881 transitions. [2023-12-25 07:50:39,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:50:39,476 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2023-12-25 07:50:39,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:50:39,489 INFO L225 Difference]: With dead ends: 7852 [2023-12-25 07:50:39,489 INFO L226 Difference]: Without dead ends: 5154 [2023-12-25 07:50:39,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:50:39,494 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 56 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:50:39,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 259 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:50:39,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5154 states. [2023-12-25 07:50:39,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5154 to 5152. [2023-12-25 07:50:39,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5152 states, 5151 states have (on average 1.4938846825859056) internal successors, (7695), 5151 states have internal predecessors, (7695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:50:39,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5152 states to 5152 states and 7695 transitions. [2023-12-25 07:50:39,616 INFO L78 Accepts]: Start accepts. Automaton has 5152 states and 7695 transitions. Word has length 65 [2023-12-25 07:50:39,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:50:39,616 INFO L495 AbstractCegarLoop]: Abstraction has 5152 states and 7695 transitions. [2023-12-25 07:50:39,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:50:39,616 INFO L276 IsEmpty]: Start isEmpty. Operand 5152 states and 7695 transitions. [2023-12-25 07:50:39,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-25 07:50:39,616 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:50:39,616 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:50:39,619 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 [2023-12-25 07:50:39,819 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 [2023-12-25 07:50:39,820 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:50:39,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:50:39,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1964255414, now seen corresponding path program 1 times [2023-12-25 07:50:39,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:50:39,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1589708778] [2023-12-25 07:50:39,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:50:39,821 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 [2023-12-25 07:50:39,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:50:39,822 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) [2023-12-25 07:50:39,830 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 [2023-12-25 07:50:39,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:50:39,880 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:50:39,881 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:50:39,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:50:39,919 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:50:39,919 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:50:39,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1589708778] [2023-12-25 07:50:39,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1589708778] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:50:39,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:50:39,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:50:39,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130021333] [2023-12-25 07:50:39,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:50:39,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:50:39,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:50:39,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:50:39,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:50:39,921 INFO L87 Difference]: Start difference. First operand 5152 states and 7695 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:50:40,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:50:40,010 INFO L93 Difference]: Finished difference Result 14788 states and 21985 transitions. [2023-12-25 07:50:40,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:50:40,011 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2023-12-25 07:50:40,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:50:40,036 INFO L225 Difference]: With dead ends: 14788 [2023-12-25 07:50:40,037 INFO L226 Difference]: Without dead ends: 9682 [2023-12-25 07:50:40,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:50:40,044 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 62 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:50:40,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 261 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:50:40,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9682 states. [2023-12-25 07:50:40,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9682 to 9680. [2023-12-25 07:50:40,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9680 states, 9679 states have (on average 1.4661638599028826) internal successors, (14191), 9679 states have internal predecessors, (14191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:50:40,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9680 states to 9680 states and 14191 transitions. [2023-12-25 07:50:40,322 INFO L78 Accepts]: Start accepts. Automaton has 9680 states and 14191 transitions. Word has length 65 [2023-12-25 07:50:40,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:50:40,322 INFO L495 AbstractCegarLoop]: Abstraction has 9680 states and 14191 transitions. [2023-12-25 07:50:40,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:50:40,322 INFO L276 IsEmpty]: Start isEmpty. Operand 9680 states and 14191 transitions. [2023-12-25 07:50:40,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-25 07:50:40,324 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:50:40,324 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:50:40,329 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 (12)] Ended with exit code 0 [2023-12-25 07:50:40,527 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 [2023-12-25 07:50:40,527 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:50:40,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:50:40,527 INFO L85 PathProgramCache]: Analyzing trace with hash 252495101, now seen corresponding path program 1 times [2023-12-25 07:50:40,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:50:40,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [746970626] [2023-12-25 07:50:40,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:50:40,528 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 [2023-12-25 07:50:40,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:50:40,545 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) [2023-12-25 07:50:40,574 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 [2023-12-25 07:50:40,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:50:40,617 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-25 07:50:40,619 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:50:41,178 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:50:41,179 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 07:50:41,418 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:50:41,418 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:50:41,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [746970626] [2023-12-25 07:50:41,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [746970626] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 07:50:41,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 07:50:41,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-25 07:50:41,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573253869] [2023-12-25 07:50:41,418 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 07:50:41,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-25 07:50:41,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:50:41,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-25 07:50:41,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-25 07:50:41,420 INFO L87 Difference]: Start difference. First operand 9680 states and 14191 transitions. Second operand has 16 states, 16 states have (on average 9.625) internal successors, (154), 16 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:50:43,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:50:43,071 INFO L93 Difference]: Finished difference Result 30842 states and 44948 transitions. [2023-12-25 07:50:43,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-25 07:50:43,072 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 9.625) internal successors, (154), 16 states have internal predecessors, (154), 0 states have call successors, (0), 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 85 [2023-12-25 07:50:43,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:50:43,118 INFO L225 Difference]: With dead ends: 30842 [2023-12-25 07:50:43,118 INFO L226 Difference]: Without dead ends: 24120 [2023-12-25 07:50:43,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=249, Invalid=743, Unknown=0, NotChecked=0, Total=992 [2023-12-25 07:50:43,127 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 823 mSDsluCounter, 1079 mSDsCounter, 0 mSdLazyCounter, 1071 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 823 SdHoareTripleChecker+Valid, 1206 SdHoareTripleChecker+Invalid, 1083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1071 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-25 07:50:43,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [823 Valid, 1206 Invalid, 1083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1071 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-25 07:50:43,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24120 states. [2023-12-25 07:50:43,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24120 to 19312. [2023-12-25 07:50:43,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19312 states, 19311 states have (on average 1.462327171042411) internal successors, (28239), 19311 states have internal predecessors, (28239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:50:43,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19312 states to 19312 states and 28239 transitions. [2023-12-25 07:50:43,620 INFO L78 Accepts]: Start accepts. Automaton has 19312 states and 28239 transitions. Word has length 85 [2023-12-25 07:50:43,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:50:43,620 INFO L495 AbstractCegarLoop]: Abstraction has 19312 states and 28239 transitions. [2023-12-25 07:50:43,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 9.625) internal successors, (154), 16 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:50:43,621 INFO L276 IsEmpty]: Start isEmpty. Operand 19312 states and 28239 transitions. [2023-12-25 07:50:43,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-25 07:50:43,623 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:50:43,623 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:50:43,628 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 [2023-12-25 07:50:43,826 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 [2023-12-25 07:50:43,826 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:50:43,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:50:43,826 INFO L85 PathProgramCache]: Analyzing trace with hash -157891587, now seen corresponding path program 1 times [2023-12-25 07:50:43,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:50:43,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [161136052] [2023-12-25 07:50:43,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:50:43,827 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 [2023-12-25 07:50:43,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:50:43,828 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) [2023-12-25 07:50:43,829 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 [2023-12-25 07:50:43,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:50:43,902 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:50:43,903 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:50:43,926 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:50:43,926 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:50:43,926 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:50:43,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [161136052] [2023-12-25 07:50:43,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [161136052] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:50:43,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:50:43,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:50:43,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343246125] [2023-12-25 07:50:43,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:50:43,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:50:43,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:50:43,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:50:43,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:50:43,928 INFO L87 Difference]: Start difference. First operand 19312 states and 28239 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 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) [2023-12-25 07:50:44,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:50:44,148 INFO L93 Difference]: Finished difference Result 32776 states and 48134 transitions. [2023-12-25 07:50:44,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:50:44,149 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 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) Word has length 85 [2023-12-25 07:50:44,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:50:44,174 INFO L225 Difference]: With dead ends: 32776 [2023-12-25 07:50:44,175 INFO L226 Difference]: Without dead ends: 13510 [2023-12-25 07:50:44,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:50:44,195 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 55 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:50:44,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 272 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:50:44,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13510 states. [2023-12-25 07:50:44,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13510 to 13503. [2023-12-25 07:50:44,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13503 states, 13502 states have (on average 1.4621537549992594) internal successors, (19742), 13502 states have internal predecessors, (19742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:50:44,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13503 states to 13503 states and 19742 transitions. [2023-12-25 07:50:44,539 INFO L78 Accepts]: Start accepts. Automaton has 13503 states and 19742 transitions. Word has length 85 [2023-12-25 07:50:44,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:50:44,540 INFO L495 AbstractCegarLoop]: Abstraction has 13503 states and 19742 transitions. [2023-12-25 07:50:44,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 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) [2023-12-25 07:50:44,540 INFO L276 IsEmpty]: Start isEmpty. Operand 13503 states and 19742 transitions. [2023-12-25 07:50:44,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-25 07:50:44,541 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:50:44,541 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:50:44,556 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-12-25 07:50:44,744 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 [2023-12-25 07:50:44,744 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:50:44,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:50:44,745 INFO L85 PathProgramCache]: Analyzing trace with hash -2053374375, now seen corresponding path program 1 times [2023-12-25 07:50:44,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:50:44,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [717024069] [2023-12-25 07:50:44,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:50:44,745 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 [2023-12-25 07:50:44,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:50:44,746 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) [2023-12-25 07:50:44,753 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 [2023-12-25 07:50:44,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:50:44,822 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:50:44,823 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:50:44,847 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:50:44,847 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:50:44,847 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:50:44,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [717024069] [2023-12-25 07:50:44,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [717024069] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:50:44,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:50:44,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:50:44,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421988372] [2023-12-25 07:50:44,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:50:44,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:50:44,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:50:44,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:50:44,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:50:44,848 INFO L87 Difference]: Start difference. First operand 13503 states and 19742 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 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) [2023-12-25 07:50:44,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:50:44,937 INFO L93 Difference]: Finished difference Result 20227 states and 29584 transitions. [2023-12-25 07:50:44,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:50:44,938 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 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 87 [2023-12-25 07:50:44,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:50:44,947 INFO L225 Difference]: With dead ends: 20227 [2023-12-25 07:50:44,947 INFO L226 Difference]: Without dead ends: 6785 [2023-12-25 07:50:44,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:50:44,956 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 51 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:50:44,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 257 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:50:44,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6785 states. [2023-12-25 07:50:45,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6785 to 6783. [2023-12-25 07:50:45,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6783 states, 6782 states have (on average 1.4458861692716014) internal successors, (9806), 6782 states have internal predecessors, (9806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:50:45,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6783 states to 6783 states and 9806 transitions. [2023-12-25 07:50:45,059 INFO L78 Accepts]: Start accepts. Automaton has 6783 states and 9806 transitions. Word has length 87 [2023-12-25 07:50:45,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:50:45,059 INFO L495 AbstractCegarLoop]: Abstraction has 6783 states and 9806 transitions. [2023-12-25 07:50:45,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 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) [2023-12-25 07:50:45,059 INFO L276 IsEmpty]: Start isEmpty. Operand 6783 states and 9806 transitions. [2023-12-25 07:50:45,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-25 07:50:45,060 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:50:45,060 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:50:45,063 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 (15)] Forceful destruction successful, exit code 0 [2023-12-25 07:50:45,262 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 [2023-12-25 07:50:45,263 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:50:45,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:50:45,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1408192636, now seen corresponding path program 1 times [2023-12-25 07:50:45,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:50:45,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1467006887] [2023-12-25 07:50:45,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:50:45,264 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 [2023-12-25 07:50:45,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:50:45,265 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) [2023-12-25 07:50:45,295 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 [2023-12-25 07:50:45,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:50:45,341 INFO L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-25 07:50:45,343 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:50:45,913 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:50:45,913 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 07:50:46,132 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:50:46,133 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:50:46,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1467006887] [2023-12-25 07:50:46,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1467006887] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 07:50:46,133 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 07:50:46,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-25 07:50:46,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744822778] [2023-12-25 07:50:46,133 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 07:50:46,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-25 07:50:46,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:50:46,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-25 07:50:46,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-25 07:50:46,134 INFO L87 Difference]: Start difference. First operand 6783 states and 9806 transitions. Second operand has 16 states, 16 states have (on average 10.125) internal successors, (162), 16 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:50:46,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:50:46,688 INFO L93 Difference]: Finished difference Result 13713 states and 19763 transitions. [2023-12-25 07:50:46,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-25 07:50:46,691 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 10.125) internal successors, (162), 16 states have internal predecessors, (162), 0 states have call successors, (0), 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 88 [2023-12-25 07:50:46,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:50:46,700 INFO L225 Difference]: With dead ends: 13713 [2023-12-25 07:50:46,700 INFO L226 Difference]: Without dead ends: 6991 [2023-12-25 07:50:46,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2023-12-25 07:50:46,708 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 316 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 07:50:46,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 550 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 07:50:46,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6991 states. [2023-12-25 07:50:46,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6991 to 6797. [2023-12-25 07:50:46,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6797 states, 6796 states have (on average 1.4452619187757505) internal successors, (9822), 6796 states have internal predecessors, (9822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:50:46,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6797 states to 6797 states and 9822 transitions. [2023-12-25 07:50:46,840 INFO L78 Accepts]: Start accepts. Automaton has 6797 states and 9822 transitions. Word has length 88 [2023-12-25 07:50:46,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:50:46,840 INFO L495 AbstractCegarLoop]: Abstraction has 6797 states and 9822 transitions. [2023-12-25 07:50:46,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 10.125) internal successors, (162), 16 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:50:46,841 INFO L276 IsEmpty]: Start isEmpty. Operand 6797 states and 9822 transitions. [2023-12-25 07:50:46,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-25 07:50:46,841 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:50:46,841 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:50:46,844 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 [2023-12-25 07:50:47,044 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 [2023-12-25 07:50:47,044 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:50:47,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:50:47,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1540533404, now seen corresponding path program 1 times [2023-12-25 07:50:47,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:50:47,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1818763225] [2023-12-25 07:50:47,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:50:47,045 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 [2023-12-25 07:50:47,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:50:47,046 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) [2023-12-25 07:50:47,048 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 (17)] Waiting until timeout for monitored process [2023-12-25 07:50:47,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:50:47,124 INFO L262 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:50:47,125 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:50:47,151 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:50:47,151 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:50:47,152 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:50:47,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1818763225] [2023-12-25 07:50:47,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1818763225] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:50:47,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:50:47,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:50:47,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368791373] [2023-12-25 07:50:47,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:50:47,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:50:47,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:50:47,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:50:47,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:50:47,153 INFO L87 Difference]: Start difference. First operand 6797 states and 9822 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 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) [2023-12-25 07:50:47,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:50:47,203 INFO L93 Difference]: Finished difference Result 10161 states and 14696 transitions. [2023-12-25 07:50:47,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:50:47,203 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 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 90 [2023-12-25 07:50:47,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:50:47,208 INFO L225 Difference]: With dead ends: 10161 [2023-12-25 07:50:47,208 INFO L226 Difference]: Without dead ends: 3439 [2023-12-25 07:50:47,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:50:47,213 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 47 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:50:47,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 242 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:50:47,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3439 states. [2023-12-25 07:50:47,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3439 to 3437. [2023-12-25 07:50:47,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3437 states, 3436 states have (on average 1.4266589057043073) internal successors, (4902), 3436 states have internal predecessors, (4902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:50:47,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3437 states to 3437 states and 4902 transitions. [2023-12-25 07:50:47,264 INFO L78 Accepts]: Start accepts. Automaton has 3437 states and 4902 transitions. Word has length 90 [2023-12-25 07:50:47,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:50:47,264 INFO L495 AbstractCegarLoop]: Abstraction has 3437 states and 4902 transitions. [2023-12-25 07:50:47,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 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) [2023-12-25 07:50:47,264 INFO L276 IsEmpty]: Start isEmpty. Operand 3437 states and 4902 transitions. [2023-12-25 07:50:47,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-25 07:50:47,265 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:50:47,265 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:50:47,282 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 [2023-12-25 07:50:47,482 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 [2023-12-25 07:50:47,483 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:50:47,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:50:47,483 INFO L85 PathProgramCache]: Analyzing trace with hash -142189615, now seen corresponding path program 1 times [2023-12-25 07:50:47,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:50:47,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [392771950] [2023-12-25 07:50:47,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:50:47,484 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 [2023-12-25 07:50:47,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:50:47,495 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) [2023-12-25 07:50:47,523 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 [2023-12-25 07:50:47,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:50:47,563 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-25 07:50:47,565 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:50:48,076 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:50:48,076 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 07:50:48,322 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:50:48,322 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:50:48,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [392771950] [2023-12-25 07:50:48,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [392771950] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 07:50:48,322 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 07:50:48,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-25 07:50:48,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626056556] [2023-12-25 07:50:48,322 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 07:50:48,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-25 07:50:48,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:50:48,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-25 07:50:48,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-25 07:50:48,323 INFO L87 Difference]: Start difference. First operand 3437 states and 4902 transitions. Second operand has 16 states, 16 states have (on average 10.625) internal successors, (170), 16 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:50:49,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:50:49,155 INFO L93 Difference]: Finished difference Result 12709 states and 18058 transitions. [2023-12-25 07:50:49,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-25 07:50:49,156 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 10.625) internal successors, (170), 16 states have internal predecessors, (170), 0 states have call successors, (0), 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 91 [2023-12-25 07:50:49,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:50:49,166 INFO L225 Difference]: With dead ends: 12709 [2023-12-25 07:50:49,166 INFO L226 Difference]: Without dead ends: 9347 [2023-12-25 07:50:49,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=183, Invalid=573, Unknown=0, NotChecked=0, Total=756 [2023-12-25 07:50:49,170 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 799 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 669 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 799 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 07:50:49,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [799 Valid, 813 Invalid, 677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 669 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 07:50:49,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9347 states. [2023-12-25 07:50:49,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9347 to 7085. [2023-12-25 07:50:49,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7085 states, 7084 states have (on average 1.406832298136646) internal successors, (9966), 7084 states have internal predecessors, (9966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:50:49,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7085 states to 7085 states and 9966 transitions. [2023-12-25 07:50:49,300 INFO L78 Accepts]: Start accepts. Automaton has 7085 states and 9966 transitions. Word has length 91 [2023-12-25 07:50:49,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:50:49,300 INFO L495 AbstractCegarLoop]: Abstraction has 7085 states and 9966 transitions. [2023-12-25 07:50:49,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 10.625) internal successors, (170), 16 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:50:49,301 INFO L276 IsEmpty]: Start isEmpty. Operand 7085 states and 9966 transitions. [2023-12-25 07:50:49,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-25 07:50:49,301 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:50:49,301 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:50:49,304 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 [2023-12-25 07:50:49,504 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 [2023-12-25 07:50:49,505 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:50:49,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:50:49,505 INFO L85 PathProgramCache]: Analyzing trace with hash 229993925, now seen corresponding path program 1 times [2023-12-25 07:50:49,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:50:49,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1312198049] [2023-12-25 07:50:49,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:50:49,506 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 [2023-12-25 07:50:49,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:50:49,507 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) [2023-12-25 07:50:49,536 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 [2023-12-25 07:50:49,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:50:49,577 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:50:49,578 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:50:49,601 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:50:49,601 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:50:49,601 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:50:49,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1312198049] [2023-12-25 07:50:49,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1312198049] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:50:49,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:50:49,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:50:49,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217928396] [2023-12-25 07:50:49,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:50:49,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:50:49,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:50:49,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:50:49,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:50:49,605 INFO L87 Difference]: Start difference. First operand 7085 states and 9966 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:50:49,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:50:49,686 INFO L93 Difference]: Finished difference Result 10593 states and 14912 transitions. [2023-12-25 07:50:49,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:50:49,686 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 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 [2023-12-25 07:50:49,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:50:49,690 INFO L225 Difference]: With dead ends: 10593 [2023-12-25 07:50:49,690 INFO L226 Difference]: Without dead ends: 3583 [2023-12-25 07:50:49,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:50:49,694 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 43 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:50:49,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 227 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:50:49,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3583 states. [2023-12-25 07:50:49,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3583 to 3581. [2023-12-25 07:50:49,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3581 states, 3580 states have (on average 1.3893854748603351) internal successors, (4974), 3580 states have internal predecessors, (4974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:50:49,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3581 states to 3581 states and 4974 transitions. [2023-12-25 07:50:49,753 INFO L78 Accepts]: Start accepts. Automaton has 3581 states and 4974 transitions. Word has length 93 [2023-12-25 07:50:49,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:50:49,753 INFO L495 AbstractCegarLoop]: Abstraction has 3581 states and 4974 transitions. [2023-12-25 07:50:49,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:50:49,753 INFO L276 IsEmpty]: Start isEmpty. Operand 3581 states and 4974 transitions. [2023-12-25 07:50:49,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-25 07:50:49,753 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:50:49,754 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:50:49,758 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 (19)] Forceful destruction successful, exit code 0 [2023-12-25 07:50:49,956 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 [2023-12-25 07:50:49,956 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:50:49,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:50:49,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1050473328, now seen corresponding path program 1 times [2023-12-25 07:50:49,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:50:49,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [687843846] [2023-12-25 07:50:49,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:50:49,957 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 [2023-12-25 07:50:49,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:50:49,958 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) [2023-12-25 07:50:49,960 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 [2023-12-25 07:50:50,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:50:50,031 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-25 07:50:50,032 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:50:50,516 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:50:50,516 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 07:50:50,754 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:50:50,755 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:50:50,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [687843846] [2023-12-25 07:50:50,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [687843846] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 07:50:50,755 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 07:50:50,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-25 07:50:50,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804080895] [2023-12-25 07:50:50,755 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 07:50:50,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-25 07:50:50,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:50:50,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-25 07:50:50,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-25 07:50:50,756 INFO L87 Difference]: Start difference. First operand 3581 states and 4974 transitions. Second operand has 16 states, 16 states have (on average 11.125) internal successors, (178), 16 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:50:51,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:50:51,823 INFO L93 Difference]: Finished difference Result 12853 states and 17794 transitions. [2023-12-25 07:50:51,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-25 07:50:51,836 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 11.125) internal successors, (178), 16 states have internal predecessors, (178), 0 states have call successors, (0), 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 94 [2023-12-25 07:50:51,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:50:51,847 INFO L225 Difference]: With dead ends: 12853 [2023-12-25 07:50:51,848 INFO L226 Difference]: Without dead ends: 9347 [2023-12-25 07:50:51,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=183, Invalid=573, Unknown=0, NotChecked=0, Total=756 [2023-12-25 07:50:51,853 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 695 mSDsluCounter, 708 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 695 SdHoareTripleChecker+Valid, 853 SdHoareTripleChecker+Invalid, 701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-25 07:50:51,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [695 Valid, 853 Invalid, 701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 691 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-25 07:50:51,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9347 states. [2023-12-25 07:50:51,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9347 to 7373. [2023-12-25 07:50:51,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7373 states, 7372 states have (on average 1.3714053174172545) internal successors, (10110), 7372 states have internal predecessors, (10110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:50:52,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7373 states to 7373 states and 10110 transitions. [2023-12-25 07:50:52,007 INFO L78 Accepts]: Start accepts. Automaton has 7373 states and 10110 transitions. Word has length 94 [2023-12-25 07:50:52,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:50:52,007 INFO L495 AbstractCegarLoop]: Abstraction has 7373 states and 10110 transitions. [2023-12-25 07:50:52,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.125) internal successors, (178), 16 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:50:52,007 INFO L276 IsEmpty]: Start isEmpty. Operand 7373 states and 10110 transitions. [2023-12-25 07:50:52,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-25 07:50:52,008 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:50:52,008 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:50:52,023 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 [2023-12-25 07:50:52,220 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 [2023-12-25 07:50:52,220 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:50:52,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:50:52,221 INFO L85 PathProgramCache]: Analyzing trace with hash 460267024, now seen corresponding path program 1 times [2023-12-25 07:50:52,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:50:52,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1764391348] [2023-12-25 07:50:52,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:50:52,221 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 [2023-12-25 07:50:52,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:50:52,222 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) [2023-12-25 07:50:52,226 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 [2023-12-25 07:50:52,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:50:52,294 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:50:52,295 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:50:52,321 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:50:52,322 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:50:52,322 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:50:52,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1764391348] [2023-12-25 07:50:52,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1764391348] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:50:52,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:50:52,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:50:52,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118622314] [2023-12-25 07:50:52,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:50:52,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:50:52,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:50:52,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:50:52,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:50:52,323 INFO L87 Difference]: Start difference. First operand 7373 states and 10110 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:50:52,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:50:52,390 INFO L93 Difference]: Finished difference Result 11025 states and 15128 transitions. [2023-12-25 07:50:52,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:50:52,391 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 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 [2023-12-25 07:50:52,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:50:52,394 INFO L225 Difference]: With dead ends: 11025 [2023-12-25 07:50:52,395 INFO L226 Difference]: Without dead ends: 3727 [2023-12-25 07:50:52,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:50:52,400 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 39 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:50:52,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 212 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:50:52,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3727 states. [2023-12-25 07:50:52,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3727 to 3725. [2023-12-25 07:50:52,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3725 states, 3724 states have (on average 1.3549946294307196) internal successors, (5046), 3724 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:50:52,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3725 states to 3725 states and 5046 transitions. [2023-12-25 07:50:52,533 INFO L78 Accepts]: Start accepts. Automaton has 3725 states and 5046 transitions. Word has length 96 [2023-12-25 07:50:52,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:50:52,533 INFO L495 AbstractCegarLoop]: Abstraction has 3725 states and 5046 transitions. [2023-12-25 07:50:52,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:50:52,533 INFO L276 IsEmpty]: Start isEmpty. Operand 3725 states and 5046 transitions. [2023-12-25 07:50:52,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-25 07:50:52,534 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:50:52,534 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:50:52,537 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-12-25 07:50:52,737 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 [2023-12-25 07:50:52,738 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:50:52,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:50:52,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1167369381, now seen corresponding path program 1 times [2023-12-25 07:50:52,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:50:52,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1022050342] [2023-12-25 07:50:52,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:50:52,739 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 [2023-12-25 07:50:52,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:50:52,740 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) [2023-12-25 07:50:52,741 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 (22)] Waiting until timeout for monitored process [2023-12-25 07:50:52,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:50:52,808 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-25 07:50:52,809 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:50:53,363 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:50:53,364 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 07:50:53,612 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:50:53,612 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:50:53,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1022050342] [2023-12-25 07:50:53,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1022050342] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 07:50:53,613 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 07:50:53,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-25 07:50:53,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165413759] [2023-12-25 07:50:53,613 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 07:50:53,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-25 07:50:53,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:50:53,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-25 07:50:53,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-25 07:50:53,614 INFO L87 Difference]: Start difference. First operand 3725 states and 5046 transitions. Second operand has 16 states, 16 states have (on average 11.625) internal successors, (186), 16 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) [2023-12-25 07:50:54,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:50:54,530 INFO L93 Difference]: Finished difference Result 12997 states and 17530 transitions. [2023-12-25 07:50:54,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-25 07:50:54,531 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 11.625) internal successors, (186), 16 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 97 [2023-12-25 07:50:54,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:50:54,537 INFO L225 Difference]: With dead ends: 12997 [2023-12-25 07:50:54,538 INFO L226 Difference]: Without dead ends: 9347 [2023-12-25 07:50:54,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=183, Invalid=573, Unknown=0, NotChecked=0, Total=756 [2023-12-25 07:50:54,540 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 646 mSDsluCounter, 652 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 646 SdHoareTripleChecker+Valid, 779 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 07:50:54,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [646 Valid, 779 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 637 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 07:50:54,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9347 states. [2023-12-25 07:50:54,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9347 to 7661. [2023-12-25 07:50:54,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7661 states, 7660 states have (on average 1.3386422976501307) internal successors, (10254), 7660 states have internal predecessors, (10254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:50:54,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7661 states to 7661 states and 10254 transitions. [2023-12-25 07:50:54,702 INFO L78 Accepts]: Start accepts. Automaton has 7661 states and 10254 transitions. Word has length 97 [2023-12-25 07:50:54,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:50:54,703 INFO L495 AbstractCegarLoop]: Abstraction has 7661 states and 10254 transitions. [2023-12-25 07:50:54,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.625) internal successors, (186), 16 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) [2023-12-25 07:50:54,703 INFO L276 IsEmpty]: Start isEmpty. Operand 7661 states and 10254 transitions. [2023-12-25 07:50:54,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-25 07:50:54,703 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:50:54,704 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:50:54,708 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 [2023-12-25 07:50:54,906 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 [2023-12-25 07:50:54,906 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:50:54,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:50:54,907 INFO L85 PathProgramCache]: Analyzing trace with hash -64120015, now seen corresponding path program 1 times [2023-12-25 07:50:54,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:50:54,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1307767970] [2023-12-25 07:50:54,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:50:54,907 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 [2023-12-25 07:50:54,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:50:54,908 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) [2023-12-25 07:50:54,909 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 [2023-12-25 07:50:54,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:50:54,979 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:50:54,981 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:50:55,012 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:50:55,012 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:50:55,012 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:50:55,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1307767970] [2023-12-25 07:50:55,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1307767970] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:50:55,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:50:55,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:50:55,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363413851] [2023-12-25 07:50:55,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:50:55,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:50:55,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:50:55,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:50:55,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:50:55,013 INFO L87 Difference]: Start difference. First operand 7661 states and 10254 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 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) [2023-12-25 07:50:55,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:50:55,091 INFO L93 Difference]: Finished difference Result 11457 states and 15320 transitions. [2023-12-25 07:50:55,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:50:55,092 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 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 99 [2023-12-25 07:50:55,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:50:55,095 INFO L225 Difference]: With dead ends: 11457 [2023-12-25 07:50:55,095 INFO L226 Difference]: Without dead ends: 3871 [2023-12-25 07:50:55,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:50:55,099 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 35 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:50:55,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 197 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:50:55,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3871 states. [2023-12-25 07:50:55,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3871 to 3869. [2023-12-25 07:50:55,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3869 states, 3868 states have (on average 1.3169596690796277) internal successors, (5094), 3868 states have internal predecessors, (5094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:50:55,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3869 states to 3869 states and 5094 transitions. [2023-12-25 07:50:55,175 INFO L78 Accepts]: Start accepts. Automaton has 3869 states and 5094 transitions. Word has length 99 [2023-12-25 07:50:55,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:50:55,175 INFO L495 AbstractCegarLoop]: Abstraction has 3869 states and 5094 transitions. [2023-12-25 07:50:55,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 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) [2023-12-25 07:50:55,175 INFO L276 IsEmpty]: Start isEmpty. Operand 3869 states and 5094 transitions. [2023-12-25 07:50:55,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-25 07:50:55,176 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:50:55,176 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:50:55,178 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 (23)] Ended with exit code 0 [2023-12-25 07:50:55,378 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 [2023-12-25 07:50:55,379 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:50:55,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:50:55,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1314993500, now seen corresponding path program 1 times [2023-12-25 07:50:55,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:50:55,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1905275615] [2023-12-25 07:50:55,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:50:55,379 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 [2023-12-25 07:50:55,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:50:55,380 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) [2023-12-25 07:50:55,388 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 [2023-12-25 07:50:55,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:50:55,452 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-25 07:50:55,453 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:50:56,038 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:50:56,038 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 07:50:56,291 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:50:56,292 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:50:56,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1905275615] [2023-12-25 07:50:56,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1905275615] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 07:50:56,292 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 07:50:56,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-25 07:50:56,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566514089] [2023-12-25 07:50:56,292 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 07:50:56,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-25 07:50:56,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:50:56,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-25 07:50:56,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-25 07:50:56,293 INFO L87 Difference]: Start difference. First operand 3869 states and 5094 transitions. Second operand has 16 states, 16 states have (on average 12.125) internal successors, (194), 16 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:50:57,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:50:57,184 INFO L93 Difference]: Finished difference Result 10949 states and 14346 transitions. [2023-12-25 07:50:57,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-25 07:50:57,185 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 12.125) internal successors, (194), 16 states have internal predecessors, (194), 0 states have call successors, (0), 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 100 [2023-12-25 07:50:57,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:50:57,191 INFO L225 Difference]: With dead ends: 10949 [2023-12-25 07:50:57,191 INFO L226 Difference]: Without dead ends: 7155 [2023-12-25 07:50:57,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=168, Invalid=534, Unknown=0, NotChecked=0, Total=702 [2023-12-25 07:50:57,195 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 483 mSDsluCounter, 718 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 483 SdHoareTripleChecker+Valid, 827 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-25 07:50:57,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [483 Valid, 827 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 660 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-25 07:50:57,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7155 states. [2023-12-25 07:50:57,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7155 to 6589. [2023-12-25 07:50:57,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6589 states, 6588 states have (on average 1.3002428658166363) internal successors, (8566), 6588 states have internal predecessors, (8566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:50:57,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6589 states to 6589 states and 8566 transitions. [2023-12-25 07:50:57,370 INFO L78 Accepts]: Start accepts. Automaton has 6589 states and 8566 transitions. Word has length 100 [2023-12-25 07:50:57,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:50:57,370 INFO L495 AbstractCegarLoop]: Abstraction has 6589 states and 8566 transitions. [2023-12-25 07:50:57,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 12.125) internal successors, (194), 16 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:50:57,370 INFO L276 IsEmpty]: Start isEmpty. Operand 6589 states and 8566 transitions. [2023-12-25 07:50:57,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-25 07:50:57,374 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:50:57,374 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:50:57,377 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 [2023-12-25 07:50:57,577 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 [2023-12-25 07:50:57,577 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:50:57,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:50:57,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1759639228, now seen corresponding path program 1 times [2023-12-25 07:50:57,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:50:57,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1336552643] [2023-12-25 07:50:57,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:50:57,578 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 [2023-12-25 07:50:57,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:50:57,592 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) [2023-12-25 07:50:57,658 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 [2023-12-25 07:50:57,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:50:57,720 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 07:50:57,721 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:50:57,815 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-25 07:50:57,815 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 07:50:57,917 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-25 07:50:57,917 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:50:57,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1336552643] [2023-12-25 07:50:57,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1336552643] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 07:50:57,918 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 07:50:57,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-12-25 07:50:57,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848667194] [2023-12-25 07:50:57,918 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 07:50:57,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 07:50:57,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:50:57,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 07:50:57,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-25 07:50:57,919 INFO L87 Difference]: Start difference. First operand 6589 states and 8566 transitions. Second operand has 6 states, 6 states have (on average 32.666666666666664) internal successors, (196), 6 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) [2023-12-25 07:50:58,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:50:58,349 INFO L93 Difference]: Finished difference Result 25399 states and 32611 transitions. [2023-12-25 07:50:58,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 07:50:58,349 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 32.666666666666664) internal successors, (196), 6 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) Word has length 102 [2023-12-25 07:50:58,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:50:58,366 INFO L225 Difference]: With dead ends: 25399 [2023-12-25 07:50:58,366 INFO L226 Difference]: Without dead ends: 18885 [2023-12-25 07:50:58,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-12-25 07:50:58,371 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 170 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:50:58,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 446 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:50:58,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18885 states. [2023-12-25 07:50:58,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18885 to 18449. [2023-12-25 07:50:58,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18449 states, 18448 states have (on average 1.243278404163053) internal successors, (22936), 18448 states have internal predecessors, (22936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:50:58,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18449 states to 18449 states and 22936 transitions. [2023-12-25 07:50:58,840 INFO L78 Accepts]: Start accepts. Automaton has 18449 states and 22936 transitions. Word has length 102 [2023-12-25 07:50:58,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:50:58,840 INFO L495 AbstractCegarLoop]: Abstraction has 18449 states and 22936 transitions. [2023-12-25 07:50:58,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 32.666666666666664) internal successors, (196), 6 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) [2023-12-25 07:50:58,840 INFO L276 IsEmpty]: Start isEmpty. Operand 18449 states and 22936 transitions. [2023-12-25 07:50:58,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-25 07:50:58,846 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:50:58,846 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:50:58,852 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 [2023-12-25 07:50:59,049 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 [2023-12-25 07:50:59,049 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:50:59,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:50:59,050 INFO L85 PathProgramCache]: Analyzing trace with hash -716910111, now seen corresponding path program 1 times [2023-12-25 07:50:59,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:50:59,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1469244827] [2023-12-25 07:50:59,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:50:59,050 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 [2023-12-25 07:50:59,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:50:59,051 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) [2023-12-25 07:50:59,053 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 [2023-12-25 07:50:59,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:50:59,164 INFO L262 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-25 07:50:59,166 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:51:00,089 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 54 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:51:00,089 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 07:51:00,541 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 54 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:51:00,542 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:51:00,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1469244827] [2023-12-25 07:51:00,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1469244827] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 07:51:00,542 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 07:51:00,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-25 07:51:00,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911811538] [2023-12-25 07:51:00,542 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 07:51:00,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-25 07:51:00,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:51:00,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-25 07:51:00,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-12-25 07:51:00,543 INFO L87 Difference]: Start difference. First operand 18449 states and 22936 transitions. Second operand has 26 states, 26 states have (on average 10.692307692307692) internal successors, (278), 25 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:51:02,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:51:02,222 INFO L93 Difference]: Finished difference Result 30833 states and 38480 transitions. [2023-12-25 07:51:02,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-25 07:51:02,223 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 10.692307692307692) internal successors, (278), 25 states have internal predecessors, (278), 0 states have call successors, (0), 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 [2023-12-25 07:51:02,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:51:02,240 INFO L225 Difference]: With dead ends: 30833 [2023-12-25 07:51:02,240 INFO L226 Difference]: Without dead ends: 18679 [2023-12-25 07:51:02,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=358, Invalid=1364, Unknown=0, NotChecked=0, Total=1722 [2023-12-25 07:51:02,249 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 1069 mSDsluCounter, 841 mSDsCounter, 0 mSdLazyCounter, 963 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1069 SdHoareTripleChecker+Valid, 943 SdHoareTripleChecker+Invalid, 980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-25 07:51:02,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1069 Valid, 943 Invalid, 980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 963 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-25 07:51:02,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18679 states. [2023-12-25 07:51:02,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18679 to 18449. [2023-12-25 07:51:02,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18449 states, 18448 states have (on average 1.2311361665221163) internal successors, (22712), 18448 states have internal predecessors, (22712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:51:02,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18449 states to 18449 states and 22712 transitions. [2023-12-25 07:51:02,793 INFO L78 Accepts]: Start accepts. Automaton has 18449 states and 22712 transitions. Word has length 153 [2023-12-25 07:51:02,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:51:02,793 INFO L495 AbstractCegarLoop]: Abstraction has 18449 states and 22712 transitions. [2023-12-25 07:51:02,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 10.692307692307692) internal successors, (278), 25 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:51:02,793 INFO L276 IsEmpty]: Start isEmpty. Operand 18449 states and 22712 transitions. [2023-12-25 07:51:02,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-25 07:51:02,799 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:51:02,799 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:51:02,806 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 [2023-12-25 07:51:03,002 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 [2023-12-25 07:51:03,002 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:51:03,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:51:03,003 INFO L85 PathProgramCache]: Analyzing trace with hash 292988638, now seen corresponding path program 1 times [2023-12-25 07:51:03,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:51:03,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [801443539] [2023-12-25 07:51:03,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:51:03,003 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 [2023-12-25 07:51:03,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:51:03,004 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) [2023-12-25 07:51:03,005 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 [2023-12-25 07:51:03,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:51:03,111 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-25 07:51:03,113 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:51:04,184 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 54 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:51:04,184 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 07:51:04,605 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 54 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:51:04,605 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:51:04,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [801443539] [2023-12-25 07:51:04,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [801443539] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 07:51:04,605 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 07:51:04,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-25 07:51:04,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738020879] [2023-12-25 07:51:04,607 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 07:51:04,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-25 07:51:04,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:51:04,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-25 07:51:04,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-25 07:51:04,608 INFO L87 Difference]: Start difference. First operand 18449 states and 22712 transitions. Second operand has 26 states, 26 states have (on average 10.807692307692308) internal successors, (281), 26 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:51:09,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:51:09,874 INFO L93 Difference]: Finished difference Result 35943 states and 43999 transitions. [2023-12-25 07:51:09,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-12-25 07:51:09,874 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 10.807692307692308) internal successors, (281), 26 states have internal predecessors, (281), 0 states have call successors, (0), 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 154 [2023-12-25 07:51:09,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:51:09,904 INFO L225 Difference]: With dead ends: 35943 [2023-12-25 07:51:09,905 INFO L226 Difference]: Without dead ends: 32261 [2023-12-25 07:51:09,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1366 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1011, Invalid=4995, Unknown=0, NotChecked=0, Total=6006 [2023-12-25 07:51:09,916 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 1162 mSDsluCounter, 2233 mSDsCounter, 0 mSdLazyCounter, 2467 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1162 SdHoareTripleChecker+Valid, 2464 SdHoareTripleChecker+Invalid, 2487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 2467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-25 07:51:09,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1162 Valid, 2464 Invalid, 2487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 2467 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-25 07:51:09,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32261 states. [2023-12-25 07:51:10,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32261 to 12953. [2023-12-25 07:51:10,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12953 states, 12952 states have (on average 1.230697961704756) internal successors, (15940), 12952 states have internal predecessors, (15940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:51:10,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12953 states to 12953 states and 15940 transitions. [2023-12-25 07:51:10,492 INFO L78 Accepts]: Start accepts. Automaton has 12953 states and 15940 transitions. Word has length 154 [2023-12-25 07:51:10,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:51:10,492 INFO L495 AbstractCegarLoop]: Abstraction has 12953 states and 15940 transitions. [2023-12-25 07:51:10,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 10.807692307692308) internal successors, (281), 26 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:51:10,493 INFO L276 IsEmpty]: Start isEmpty. Operand 12953 states and 15940 transitions. [2023-12-25 07:51:10,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-25 07:51:10,495 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:51:10,495 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:51:10,507 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 [2023-12-25 07:51:10,698 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 [2023-12-25 07:51:10,698 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:51:10,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:51:10,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1666905082, now seen corresponding path program 1 times [2023-12-25 07:51:10,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:51:10,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1610276867] [2023-12-25 07:51:10,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:51:10,699 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 [2023-12-25 07:51:10,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:51:10,700 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) [2023-12-25 07:51:10,702 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 [2023-12-25 07:51:10,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:51:10,810 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-25 07:51:10,812 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:51:11,590 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 46 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:51:11,590 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 07:51:11,946 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 46 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:51:11,946 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:51:11,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1610276867] [2023-12-25 07:51:11,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1610276867] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 07:51:11,947 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 07:51:11,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-25 07:51:11,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928368096] [2023-12-25 07:51:11,947 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 07:51:11,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-25 07:51:11,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:51:11,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-25 07:51:11,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-12-25 07:51:11,948 INFO L87 Difference]: Start difference. First operand 12953 states and 15940 transitions. Second operand has 26 states, 26 states have (on average 10.923076923076923) internal successors, (284), 25 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:51:13,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:51:13,538 INFO L93 Difference]: Finished difference Result 24563 states and 30329 transitions. [2023-12-25 07:51:13,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-25 07:51:13,538 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 10.923076923076923) internal successors, (284), 25 states have internal predecessors, (284), 0 states have call successors, (0), 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 154 [2023-12-25 07:51:13,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:51:13,551 INFO L225 Difference]: With dead ends: 24563 [2023-12-25 07:51:13,552 INFO L226 Difference]: Without dead ends: 12955 [2023-12-25 07:51:13,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=378, Invalid=1428, Unknown=0, NotChecked=0, Total=1806 [2023-12-25 07:51:13,556 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 855 mSDsluCounter, 792 mSDsCounter, 0 mSdLazyCounter, 938 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 855 SdHoareTripleChecker+Valid, 894 SdHoareTripleChecker+Invalid, 954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-25 07:51:13,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [855 Valid, 894 Invalid, 954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 938 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-25 07:51:13,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12955 states. [2023-12-25 07:51:13,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12955 to 12953. [2023-12-25 07:51:14,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12953 states, 12952 states have (on average 1.2201976528721432) internal successors, (15804), 12952 states have internal predecessors, (15804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:51:14,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12953 states to 12953 states and 15804 transitions. [2023-12-25 07:51:14,017 INFO L78 Accepts]: Start accepts. Automaton has 12953 states and 15804 transitions. Word has length 154 [2023-12-25 07:51:14,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:51:14,018 INFO L495 AbstractCegarLoop]: Abstraction has 12953 states and 15804 transitions. [2023-12-25 07:51:14,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 10.923076923076923) internal successors, (284), 25 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:51:14,018 INFO L276 IsEmpty]: Start isEmpty. Operand 12953 states and 15804 transitions. [2023-12-25 07:51:14,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-25 07:51:14,020 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:51:14,020 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:51:14,027 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 [2023-12-25 07:51:14,223 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 [2023-12-25 07:51:14,223 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:51:14,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:51:14,224 INFO L85 PathProgramCache]: Analyzing trace with hash -868364143, now seen corresponding path program 1 times [2023-12-25 07:51:14,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:51:14,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [72790717] [2023-12-25 07:51:14,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:51:14,224 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 [2023-12-25 07:51:14,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:51:14,225 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) [2023-12-25 07:51:14,227 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 [2023-12-25 07:51:14,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:51:14,319 INFO L262 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-25 07:51:14,321 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:51:15,211 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 38 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:51:15,211 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 07:51:15,515 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 38 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:51:15,516 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:51:15,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [72790717] [2023-12-25 07:51:15,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [72790717] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 07:51:15,516 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 07:51:15,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-25 07:51:15,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53027312] [2023-12-25 07:51:15,516 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 07:51:15,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-25 07:51:15,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:51:15,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-25 07:51:15,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-12-25 07:51:15,519 INFO L87 Difference]: Start difference. First operand 12953 states and 15804 transitions. Second operand has 26 states, 26 states have (on average 11.153846153846153) internal successors, (290), 25 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:51:20,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:51:20,059 INFO L93 Difference]: Finished difference Result 59725 states and 74186 transitions. [2023-12-25 07:51:20,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2023-12-25 07:51:20,060 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 11.153846153846153) internal successors, (290), 25 states have internal predecessors, (290), 0 states have call successors, (0), 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 155 [2023-12-25 07:51:20,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:51:20,110 INFO L225 Difference]: With dead ends: 59725 [2023-12-25 07:51:20,110 INFO L226 Difference]: Without dead ends: 54043 [2023-12-25 07:51:20,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2618 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1444, Invalid=7486, Unknown=0, NotChecked=0, Total=8930 [2023-12-25 07:51:20,118 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 1660 mSDsluCounter, 1276 mSDsCounter, 0 mSdLazyCounter, 1445 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1660 SdHoareTripleChecker+Valid, 1378 SdHoareTripleChecker+Invalid, 1470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-25 07:51:20,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1660 Valid, 1378 Invalid, 1470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1445 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-25 07:51:20,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54043 states. [2023-12-25 07:51:20,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54043 to 12953. [2023-12-25 07:51:20,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12953 states, 12952 states have (on average 1.2143298332303891) internal successors, (15728), 12952 states have internal predecessors, (15728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:51:20,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12953 states to 12953 states and 15728 transitions. [2023-12-25 07:51:20,905 INFO L78 Accepts]: Start accepts. Automaton has 12953 states and 15728 transitions. Word has length 155 [2023-12-25 07:51:20,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:51:20,905 INFO L495 AbstractCegarLoop]: Abstraction has 12953 states and 15728 transitions. [2023-12-25 07:51:20,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 11.153846153846153) internal successors, (290), 25 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:51:20,905 INFO L276 IsEmpty]: Start isEmpty. Operand 12953 states and 15728 transitions. [2023-12-25 07:51:20,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-12-25 07:51:20,907 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:51:20,908 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:51:20,912 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 [2023-12-25 07:51:21,112 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 [2023-12-25 07:51:21,112 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:51:21,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:51:21,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1439200662, now seen corresponding path program 1 times [2023-12-25 07:51:21,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:51:21,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1125696217] [2023-12-25 07:51:21,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:51:21,113 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 [2023-12-25 07:51:21,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:51:21,115 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) [2023-12-25 07:51:21,141 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 [2023-12-25 07:51:21,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:51:21,225 INFO L262 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-25 07:51:21,227 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:51:22,235 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 30 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:51:22,235 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 07:51:22,704 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 30 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:51:22,705 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:51:22,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1125696217] [2023-12-25 07:51:22,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1125696217] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 07:51:22,705 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 07:51:22,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-25 07:51:22,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386803482] [2023-12-25 07:51:22,705 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 07:51:22,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-25 07:51:22,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:51:22,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-25 07:51:22,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-12-25 07:51:22,707 INFO L87 Difference]: Start difference. First operand 12953 states and 15728 transitions. Second operand has 26 states, 26 states have (on average 11.384615384615385) internal successors, (296), 25 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) [2023-12-25 07:51:24,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:51:24,364 INFO L93 Difference]: Finished difference Result 19965 states and 24380 transitions. [2023-12-25 07:51:24,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-25 07:51:24,365 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 11.384615384615385) internal successors, (296), 25 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) Word has length 156 [2023-12-25 07:51:24,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:51:24,380 INFO L225 Difference]: With dead ends: 19965 [2023-12-25 07:51:24,380 INFO L226 Difference]: Without dead ends: 14427 [2023-12-25 07:51:24,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=391, Invalid=1501, Unknown=0, NotChecked=0, Total=1892 [2023-12-25 07:51:24,386 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 964 mSDsluCounter, 797 mSDsCounter, 0 mSdLazyCounter, 892 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 964 SdHoareTripleChecker+Valid, 899 SdHoareTripleChecker+Invalid, 908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-25 07:51:24,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [964 Valid, 899 Invalid, 908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 892 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-25 07:51:24,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14427 states. [2023-12-25 07:51:24,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14427 to 12953. [2023-12-25 07:51:24,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12953 states, 12952 states have (on average 1.208462013588635) internal successors, (15652), 12952 states have internal predecessors, (15652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:51:25,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12953 states to 12953 states and 15652 transitions. [2023-12-25 07:51:25,011 INFO L78 Accepts]: Start accepts. Automaton has 12953 states and 15652 transitions. Word has length 156 [2023-12-25 07:51:25,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:51:25,011 INFO L495 AbstractCegarLoop]: Abstraction has 12953 states and 15652 transitions. [2023-12-25 07:51:25,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 11.384615384615385) internal successors, (296), 25 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) [2023-12-25 07:51:25,012 INFO L276 IsEmpty]: Start isEmpty. Operand 12953 states and 15652 transitions. [2023-12-25 07:51:25,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-25 07:51:25,014 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:51:25,014 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:51:25,017 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2023-12-25 07:51:25,217 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 [2023-12-25 07:51:25,217 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:51:25,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:51:25,218 INFO L85 PathProgramCache]: Analyzing trace with hash 229005121, now seen corresponding path program 1 times [2023-12-25 07:51:25,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:51:25,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [665414065] [2023-12-25 07:51:25,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:51:25,218 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 [2023-12-25 07:51:25,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:51:25,219 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) [2023-12-25 07:51:25,224 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 [2023-12-25 07:51:25,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:51:25,326 INFO L262 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-25 07:51:25,328 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:51:26,454 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 22 proven. 103 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:51:26,454 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 07:51:26,830 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 22 proven. 103 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:51:26,830 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:51:26,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [665414065] [2023-12-25 07:51:26,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [665414065] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 07:51:26,830 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 07:51:26,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-25 07:51:26,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82704670] [2023-12-25 07:51:26,830 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 07:51:26,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-25 07:51:26,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:51:26,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-25 07:51:26,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-12-25 07:51:26,831 INFO L87 Difference]: Start difference. First operand 12953 states and 15652 transitions. Second operand has 26 states, 26 states have (on average 11.615384615384615) internal successors, (302), 25 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:51:28,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:51:28,622 INFO L93 Difference]: Finished difference Result 19137 states and 23216 transitions. [2023-12-25 07:51:28,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-25 07:51:28,623 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 11.615384615384615) internal successors, (302), 25 states have internal predecessors, (302), 0 states have call successors, (0), 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 157 [2023-12-25 07:51:28,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:51:28,635 INFO L225 Difference]: With dead ends: 19137 [2023-12-25 07:51:28,636 INFO L226 Difference]: Without dead ends: 13743 [2023-12-25 07:51:28,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=391, Invalid=1501, Unknown=0, NotChecked=0, Total=1892 [2023-12-25 07:51:28,640 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 897 mSDsluCounter, 783 mSDsCounter, 0 mSdLazyCounter, 914 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 897 SdHoareTripleChecker+Valid, 885 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-25 07:51:28,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [897 Valid, 885 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 914 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-25 07:51:28,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13743 states. [2023-12-25 07:51:29,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13743 to 12953. [2023-12-25 07:51:29,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12953 states, 12952 states have (on average 1.2025941939468807) internal successors, (15576), 12952 states have internal predecessors, (15576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:51:29,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12953 states to 12953 states and 15576 transitions. [2023-12-25 07:51:29,388 INFO L78 Accepts]: Start accepts. Automaton has 12953 states and 15576 transitions. Word has length 157 [2023-12-25 07:51:29,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:51:29,388 INFO L495 AbstractCegarLoop]: Abstraction has 12953 states and 15576 transitions. [2023-12-25 07:51:29,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 11.615384615384615) internal successors, (302), 25 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:51:29,388 INFO L276 IsEmpty]: Start isEmpty. Operand 12953 states and 15576 transitions. [2023-12-25 07:51:29,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-25 07:51:29,391 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:51:29,391 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:51:29,396 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 [2023-12-25 07:51:29,594 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 [2023-12-25 07:51:29,594 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:51:29,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:51:29,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1521043238, now seen corresponding path program 1 times [2023-12-25 07:51:29,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:51:29,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1736167667] [2023-12-25 07:51:29,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:51:29,595 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 [2023-12-25 07:51:29,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:51:29,596 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) [2023-12-25 07:51:29,603 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 [2023-12-25 07:51:29,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:51:29,715 INFO L262 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-25 07:51:29,717 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:51:30,970 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 13 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:51:30,970 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 07:51:31,487 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 13 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:51:31,488 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:51:31,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1736167667] [2023-12-25 07:51:31,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1736167667] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 07:51:31,488 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 07:51:31,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-25 07:51:31,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668891078] [2023-12-25 07:51:31,488 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 07:51:31,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-25 07:51:31,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:51:31,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-25 07:51:31,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-25 07:51:31,489 INFO L87 Difference]: Start difference. First operand 12953 states and 15576 transitions. Second operand has 26 states, 26 states have (on average 11.923076923076923) internal successors, (310), 26 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:51:35,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:51:35,857 INFO L93 Difference]: Finished difference Result 23459 states and 28101 transitions. [2023-12-25 07:51:35,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-12-25 07:51:35,858 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 11.923076923076923) internal successors, (310), 26 states have internal predecessors, (310), 0 states have call successors, (0), 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 158 [2023-12-25 07:51:35,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:51:35,874 INFO L225 Difference]: With dead ends: 23459 [2023-12-25 07:51:35,875 INFO L226 Difference]: Without dead ends: 16785 [2023-12-25 07:51:35,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 939 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=760, Invalid=3796, Unknown=0, NotChecked=0, Total=4556 [2023-12-25 07:51:35,880 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 838 mSDsluCounter, 2031 mSDsCounter, 0 mSdLazyCounter, 2277 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 838 SdHoareTripleChecker+Valid, 2224 SdHoareTripleChecker+Invalid, 2292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-25 07:51:35,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [838 Valid, 2224 Invalid, 2292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 2277 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-25 07:51:35,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16785 states. [2023-12-25 07:51:36,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16785 to 14601. [2023-12-25 07:51:36,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14601 states, 14600 states have (on average 1.194794520547945) internal successors, (17444), 14600 states have internal predecessors, (17444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:51:36,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14601 states to 14601 states and 17444 transitions. [2023-12-25 07:51:36,665 INFO L78 Accepts]: Start accepts. Automaton has 14601 states and 17444 transitions. Word has length 158 [2023-12-25 07:51:36,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:51:36,665 INFO L495 AbstractCegarLoop]: Abstraction has 14601 states and 17444 transitions. [2023-12-25 07:51:36,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 11.923076923076923) internal successors, (310), 26 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:51:36,666 INFO L276 IsEmpty]: Start isEmpty. Operand 14601 states and 17444 transitions. [2023-12-25 07:51:36,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-25 07:51:36,668 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:51:36,669 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:51:36,674 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 [2023-12-25 07:51:36,872 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 [2023-12-25 07:51:36,872 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:51:36,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:51:36,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1166337666, now seen corresponding path program 1 times [2023-12-25 07:51:36,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:51:36,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [992337358] [2023-12-25 07:51:36,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:51:36,873 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 [2023-12-25 07:51:36,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:51:36,874 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) [2023-12-25 07:51:36,875 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 [2023-12-25 07:51:36,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:51:36,978 INFO L262 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-25 07:51:36,981 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:51:38,185 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 22 proven. 104 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:51:38,185 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 07:51:38,677 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 22 proven. 104 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:51:38,678 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:51:38,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [992337358] [2023-12-25 07:51:38,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [992337358] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 07:51:38,678 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 07:51:38,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-25 07:51:38,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771976675] [2023-12-25 07:51:38,678 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 07:51:38,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-25 07:51:38,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:51:38,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-25 07:51:38,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-25 07:51:38,679 INFO L87 Difference]: Start difference. First operand 14601 states and 17444 transitions. Second operand has 26 states, 26 states have (on average 11.73076923076923) internal successors, (305), 26 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:51:43,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:51:43,473 INFO L93 Difference]: Finished difference Result 26031 states and 31085 transitions. [2023-12-25 07:51:43,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-25 07:51:43,474 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 11.73076923076923) internal successors, (305), 26 states have internal predecessors, (305), 0 states have call successors, (0), 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 158 [2023-12-25 07:51:43,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:51:43,493 INFO L225 Difference]: With dead ends: 26031 [2023-12-25 07:51:43,494 INFO L226 Difference]: Without dead ends: 22869 [2023-12-25 07:51:43,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1010 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=804, Invalid=4026, Unknown=0, NotChecked=0, Total=4830 [2023-12-25 07:51:43,500 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 848 mSDsluCounter, 2207 mSDsCounter, 0 mSdLazyCounter, 2389 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 2414 SdHoareTripleChecker+Invalid, 2407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 2389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-25 07:51:43,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [848 Valid, 2414 Invalid, 2407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 2389 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-25 07:51:43,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22869 states. [2023-12-25 07:51:44,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22869 to 19005. [2023-12-25 07:51:44,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19005 states, 19004 states have (on average 1.1938539254893707) internal successors, (22688), 19004 states have internal predecessors, (22688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:51:44,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19005 states to 19005 states and 22688 transitions. [2023-12-25 07:51:44,454 INFO L78 Accepts]: Start accepts. Automaton has 19005 states and 22688 transitions. Word has length 158 [2023-12-25 07:51:44,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:51:44,454 INFO L495 AbstractCegarLoop]: Abstraction has 19005 states and 22688 transitions. [2023-12-25 07:51:44,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 11.73076923076923) internal successors, (305), 26 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:51:44,454 INFO L276 IsEmpty]: Start isEmpty. Operand 19005 states and 22688 transitions. [2023-12-25 07:51:44,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-25 07:51:44,457 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:51:44,457 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:51:44,460 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 (33)] Ended with exit code 0 [2023-12-25 07:51:44,658 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 [2023-12-25 07:51:44,659 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:51:44,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:51:44,659 INFO L85 PathProgramCache]: Analyzing trace with hash 619544410, now seen corresponding path program 1 times [2023-12-25 07:51:44,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:51:44,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1595978145] [2023-12-25 07:51:44,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:51:44,660 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 [2023-12-25 07:51:44,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:51:44,662 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) [2023-12-25 07:51:44,663 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 [2023-12-25 07:51:44,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:51:44,762 INFO L262 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-25 07:51:44,764 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:51:45,948 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 31 proven. 95 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:51:45,948 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 07:51:46,387 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 31 proven. 95 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:51:46,387 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:51:46,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1595978145] [2023-12-25 07:51:46,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1595978145] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 07:51:46,387 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 07:51:46,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-25 07:51:46,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346163342] [2023-12-25 07:51:46,388 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 07:51:46,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-25 07:51:46,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:51:46,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-25 07:51:46,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-25 07:51:46,389 INFO L87 Difference]: Start difference. First operand 19005 states and 22688 transitions. Second operand has 26 states, 26 states have (on average 11.538461538461538) internal successors, (300), 26 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:51:52,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:51:52,264 INFO L93 Difference]: Finished difference Result 34780 states and 41517 transitions. [2023-12-25 07:51:52,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-25 07:51:52,264 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 11.538461538461538) internal successors, (300), 26 states have internal predecessors, (300), 0 states have call successors, (0), 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 158 [2023-12-25 07:51:52,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:51:52,295 INFO L225 Difference]: With dead ends: 34780 [2023-12-25 07:51:52,295 INFO L226 Difference]: Without dead ends: 30464 [2023-12-25 07:51:52,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1010 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=804, Invalid=4026, Unknown=0, NotChecked=0, Total=4830 [2023-12-25 07:51:52,302 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 1231 mSDsluCounter, 2765 mSDsCounter, 0 mSdLazyCounter, 2869 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1231 SdHoareTripleChecker+Valid, 2986 SdHoareTripleChecker+Invalid, 2887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 2869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-25 07:51:52,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1231 Valid, 2986 Invalid, 2887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 2869 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-25 07:51:52,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30464 states. [2023-12-25 07:51:53,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30464 to 24722. [2023-12-25 07:51:53,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24722 states, 24721 states have (on average 1.192629747987541) internal successors, (29483), 24721 states have internal predecessors, (29483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:51:53,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24722 states to 24722 states and 29483 transitions. [2023-12-25 07:51:53,666 INFO L78 Accepts]: Start accepts. Automaton has 24722 states and 29483 transitions. Word has length 158 [2023-12-25 07:51:53,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:51:53,666 INFO L495 AbstractCegarLoop]: Abstraction has 24722 states and 29483 transitions. [2023-12-25 07:51:53,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 11.538461538461538) internal successors, (300), 26 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:51:53,666 INFO L276 IsEmpty]: Start isEmpty. Operand 24722 states and 29483 transitions. [2023-12-25 07:51:53,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-25 07:51:53,670 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:51:53,670 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:51:53,673 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 (34)] Ended with exit code 0 [2023-12-25 07:51:53,872 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 [2023-12-25 07:51:53,873 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:51:53,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:51:53,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1117545214, now seen corresponding path program 1 times [2023-12-25 07:51:53,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:51:53,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2035169892] [2023-12-25 07:51:53,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:51:53,874 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 [2023-12-25 07:51:53,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:51:53,875 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) [2023-12-25 07:51:53,901 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 [2023-12-25 07:51:53,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:51:53,978 INFO L262 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-25 07:51:53,980 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:51:55,059 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 40 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:51:55,059 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 07:51:55,508 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 40 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:51:55,508 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:51:55,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2035169892] [2023-12-25 07:51:55,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2035169892] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 07:51:55,509 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 07:51:55,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-25 07:51:55,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996240454] [2023-12-25 07:51:55,509 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 07:51:55,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-25 07:51:55,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:51:55,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-25 07:51:55,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-25 07:51:55,511 INFO L87 Difference]: Start difference. First operand 24722 states and 29483 transitions. Second operand has 26 states, 26 states have (on average 11.346153846153847) internal successors, (295), 26 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:51:59,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:51:59,209 INFO L93 Difference]: Finished difference Result 47227 states and 56666 transitions. [2023-12-25 07:51:59,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-25 07:51:59,210 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 11.346153846153847) internal successors, (295), 26 states have internal predecessors, (295), 0 states have call successors, (0), 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 158 [2023-12-25 07:51:59,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:51:59,246 INFO L225 Difference]: With dead ends: 47227 [2023-12-25 07:51:59,246 INFO L226 Difference]: Without dead ends: 41342 [2023-12-25 07:51:59,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 438 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=321, Invalid=2031, Unknown=0, NotChecked=0, Total=2352 [2023-12-25 07:51:59,252 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 523 mSDsluCounter, 1860 mSDsCounter, 0 mSdLazyCounter, 1836 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 2002 SdHoareTripleChecker+Invalid, 1847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-25 07:51:59,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [523 Valid, 2002 Invalid, 1847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1836 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-25 07:51:59,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41342 states. [2023-12-25 07:52:01,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41342 to 37854. [2023-12-25 07:52:01,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37854 states, 37853 states have (on average 1.1914511399360685) internal successors, (45100), 37853 states have internal predecessors, (45100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:52:01,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37854 states to 37854 states and 45100 transitions. [2023-12-25 07:52:01,210 INFO L78 Accepts]: Start accepts. Automaton has 37854 states and 45100 transitions. Word has length 158 [2023-12-25 07:52:01,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:52:01,210 INFO L495 AbstractCegarLoop]: Abstraction has 37854 states and 45100 transitions. [2023-12-25 07:52:01,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 11.346153846153847) internal successors, (295), 26 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:52:01,210 INFO L276 IsEmpty]: Start isEmpty. Operand 37854 states and 45100 transitions. [2023-12-25 07:52:01,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-25 07:52:01,214 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:52:01,214 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:52:01,217 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 (35)] Ended with exit code 0 [2023-12-25 07:52:01,417 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 [2023-12-25 07:52:01,417 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:52:01,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:52:01,417 INFO L85 PathProgramCache]: Analyzing trace with hash -174184998, now seen corresponding path program 1 times [2023-12-25 07:52:01,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:52:01,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [694915772] [2023-12-25 07:52:01,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:52:01,418 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 [2023-12-25 07:52:01,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:52:01,419 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) [2023-12-25 07:52:01,421 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 [2023-12-25 07:52:01,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:52:01,538 INFO L262 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-25 07:52:01,540 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:52:02,479 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 49 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:52:02,480 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 07:52:02,919 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 49 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:52:02,919 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:52:02,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [694915772] [2023-12-25 07:52:02,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [694915772] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 07:52:02,919 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 07:52:02,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-25 07:52:02,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376163957] [2023-12-25 07:52:02,919 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 07:52:02,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-25 07:52:02,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:52:02,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-25 07:52:02,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-25 07:52:02,920 INFO L87 Difference]: Start difference. First operand 37854 states and 45100 transitions. Second operand has 26 states, 26 states have (on average 11.153846153846153) internal successors, (290), 26 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:52:11,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:52:11,283 INFO L93 Difference]: Finished difference Result 98256 states and 116648 transitions. [2023-12-25 07:52:11,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-25 07:52:11,284 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 11.153846153846153) internal successors, (290), 26 states have internal predecessors, (290), 0 states have call successors, (0), 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 158 [2023-12-25 07:52:11,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:52:11,365 INFO L225 Difference]: With dead ends: 98256 [2023-12-25 07:52:11,365 INFO L226 Difference]: Without dead ends: 81816 [2023-12-25 07:52:11,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1047 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=863, Invalid=3967, Unknown=0, NotChecked=0, Total=4830 [2023-12-25 07:52:11,378 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 992 mSDsluCounter, 2437 mSDsCounter, 0 mSdLazyCounter, 2292 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 992 SdHoareTripleChecker+Valid, 2644 SdHoareTripleChecker+Invalid, 2314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 2292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-25 07:52:11,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [992 Valid, 2644 Invalid, 2314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 2292 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-25 07:52:11,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81816 states. [2023-12-25 07:52:16,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81816 to 70513. [2023-12-25 07:52:16,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70513 states, 70512 states have (on average 1.1773031540730656) internal successors, (83014), 70512 states have internal predecessors, (83014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:52:16,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70513 states to 70513 states and 83014 transitions. [2023-12-25 07:52:16,374 INFO L78 Accepts]: Start accepts. Automaton has 70513 states and 83014 transitions. Word has length 158 [2023-12-25 07:52:16,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:52:16,374 INFO L495 AbstractCegarLoop]: Abstraction has 70513 states and 83014 transitions. [2023-12-25 07:52:16,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 11.153846153846153) internal successors, (290), 26 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:52:16,374 INFO L276 IsEmpty]: Start isEmpty. Operand 70513 states and 83014 transitions. [2023-12-25 07:52:16,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2023-12-25 07:52:16,409 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:52:16,410 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:52:16,412 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 [2023-12-25 07:52:16,612 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 [2023-12-25 07:52:16,613 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:52:16,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:52:16,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1703187660, now seen corresponding path program 1 times [2023-12-25 07:52:16,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:52:16,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1321145177] [2023-12-25 07:52:16,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:52:16,614 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:52:16,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:52:16,616 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) [2023-12-25 07:52:16,617 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 [2023-12-25 07:52:16,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:52:16,788 INFO L262 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-25 07:52:16,790 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:52:18,631 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 102 proven. 232 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:52:18,631 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 07:52:19,276 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 102 proven. 232 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:52:19,276 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:52:19,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1321145177] [2023-12-25 07:52:19,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1321145177] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 07:52:19,276 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 07:52:19,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 36 [2023-12-25 07:52:19,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110956459] [2023-12-25 07:52:19,276 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 07:52:19,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-25 07:52:19,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:52:19,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-25 07:52:19,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1152, Unknown=0, NotChecked=0, Total=1260 [2023-12-25 07:52:19,278 INFO L87 Difference]: Start difference. First operand 70513 states and 83014 transitions. Second operand has 36 states, 36 states have (on average 11.13888888888889) internal successors, (401), 36 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:52:40,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:52:40,781 INFO L93 Difference]: Finished difference Result 99921 states and 117777 transitions. [2023-12-25 07:52:40,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2023-12-25 07:52:40,781 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 11.13888888888889) internal successors, (401), 36 states have internal predecessors, (401), 0 states have call successors, (0), 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 216 [2023-12-25 07:52:40,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:52:40,871 INFO L225 Difference]: With dead ends: 99921 [2023-12-25 07:52:40,871 INFO L226 Difference]: Without dead ends: 89403 [2023-12-25 07:52:40,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 551 GetRequests, 396 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7002 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=3125, Invalid=21367, Unknown=0, NotChecked=0, Total=24492 [2023-12-25 07:52:40,888 INFO L413 NwaCegarLoop]: 384 mSDtfsCounter, 1276 mSDsluCounter, 6223 mSDsCounter, 0 mSdLazyCounter, 7512 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1276 SdHoareTripleChecker+Valid, 6607 SdHoareTripleChecker+Invalid, 7539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 7512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-12-25 07:52:40,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1276 Valid, 6607 Invalid, 7539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 7512 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2023-12-25 07:52:40,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89403 states. [2023-12-25 07:52:44,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89403 to 37058. [2023-12-25 07:52:44,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37058 states, 37057 states have (on average 1.1822597619882884) internal successors, (43811), 37057 states have internal predecessors, (43811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:52:44,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37058 states to 37058 states and 43811 transitions. [2023-12-25 07:52:44,321 INFO L78 Accepts]: Start accepts. Automaton has 37058 states and 43811 transitions. Word has length 216 [2023-12-25 07:52:44,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:52:44,321 INFO L495 AbstractCegarLoop]: Abstraction has 37058 states and 43811 transitions. [2023-12-25 07:52:44,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 11.13888888888889) internal successors, (401), 36 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:52:44,321 INFO L276 IsEmpty]: Start isEmpty. Operand 37058 states and 43811 transitions. [2023-12-25 07:52:44,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2023-12-25 07:52:44,330 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:52:44,330 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:52:44,335 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 [2023-12-25 07:52:44,531 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 [2023-12-25 07:52:44,531 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:52:44,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:52:44,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1056811120, now seen corresponding path program 2 times [2023-12-25 07:52:44,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:52:44,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [743345403] [2023-12-25 07:52:44,532 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 07:52:44,532 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 [2023-12-25 07:52:44,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:52:44,533 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) [2023-12-25 07:52:44,538 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 [2023-12-25 07:52:44,599 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-25 07:52:44,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 07:52:44,600 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-25 07:52:44,616 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:52:46,512 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-25 07:52:46,512 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:52:46,512 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:52:46,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [743345403] [2023-12-25 07:52:46,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [743345403] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:52:46,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:52:46,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-25 07:52:46,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994689506] [2023-12-25 07:52:46,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:52:46,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-25 07:52:46,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:52:46,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-25 07:52:46,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-12-25 07:52:46,513 INFO L87 Difference]: Start difference. First operand 37058 states and 43811 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:52:50,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:52:50,123 INFO L93 Difference]: Finished difference Result 60927 states and 73174 transitions. [2023-12-25 07:52:50,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 07:52:50,124 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 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 216 [2023-12-25 07:52:50,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:52:50,165 INFO L225 Difference]: With dead ends: 60927 [2023-12-25 07:52:50,165 INFO L226 Difference]: Without dead ends: 46664 [2023-12-25 07:52:50,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-12-25 07:52:50,176 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 548 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 548 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 07:52:50,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [548 Valid, 592 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 07:52:50,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46664 states. [2023-12-25 07:52:53,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46664 to 36954. [2023-12-25 07:52:53,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36954 states, 36953 states have (on average 1.1708115714556329) internal successors, (43265), 36953 states have internal predecessors, (43265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:52:53,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36954 states to 36954 states and 43265 transitions. [2023-12-25 07:52:53,267 INFO L78 Accepts]: Start accepts. Automaton has 36954 states and 43265 transitions. Word has length 216 [2023-12-25 07:52:53,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:52:53,268 INFO L495 AbstractCegarLoop]: Abstraction has 36954 states and 43265 transitions. [2023-12-25 07:52:53,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:52:53,268 INFO L276 IsEmpty]: Start isEmpty. Operand 36954 states and 43265 transitions. [2023-12-25 07:52:53,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2023-12-25 07:52:53,277 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:52:53,277 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:52:53,279 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 (38)] Ended with exit code 0 [2023-12-25 07:52:53,479 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 [2023-12-25 07:52:53,479 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:52:53,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:52:53,480 INFO L85 PathProgramCache]: Analyzing trace with hash -702105548, now seen corresponding path program 2 times [2023-12-25 07:52:53,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:52:53,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [771424168] [2023-12-25 07:52:53,480 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 07:52:53,480 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 [2023-12-25 07:52:53,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:52:53,483 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) [2023-12-25 07:52:53,489 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 [2023-12-25 07:52:53,556 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-25 07:52:53,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 07:52:53,558 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-25 07:52:53,573 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:52:55,434 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2023-12-25 07:52:55,434 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:52:55,434 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:52:55,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [771424168] [2023-12-25 07:52:55,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [771424168] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:52:55,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:52:55,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-25 07:52:55,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153318271] [2023-12-25 07:52:55,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:52:55,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-25 07:52:55,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:52:55,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-25 07:52:55,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-12-25 07:52:55,435 INFO L87 Difference]: Start difference. First operand 36954 states and 43265 transitions. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 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) [2023-12-25 07:52:59,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:52:59,070 INFO L93 Difference]: Finished difference Result 52057 states and 62090 transitions. [2023-12-25 07:52:59,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 07:52:59,071 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 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 216 [2023-12-25 07:52:59,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:52:59,119 INFO L225 Difference]: With dead ends: 52057 [2023-12-25 07:52:59,119 INFO L226 Difference]: Without dead ends: 48351 [2023-12-25 07:52:59,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-12-25 07:52:59,126 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 556 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 556 SdHoareTripleChecker+Valid, 644 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 07:52:59,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [556 Valid, 644 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 07:52:59,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48351 states. [2023-12-25 07:53:02,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48351 to 40046. [2023-12-25 07:53:02,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40046 states, 40045 states have (on average 1.1687851167436634) internal successors, (46804), 40045 states have internal predecessors, (46804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:53:02,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40046 states to 40046 states and 46804 transitions. [2023-12-25 07:53:02,858 INFO L78 Accepts]: Start accepts. Automaton has 40046 states and 46804 transitions. Word has length 216 [2023-12-25 07:53:02,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:53:02,859 INFO L495 AbstractCegarLoop]: Abstraction has 40046 states and 46804 transitions. [2023-12-25 07:53:02,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 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) [2023-12-25 07:53:02,859 INFO L276 IsEmpty]: Start isEmpty. Operand 40046 states and 46804 transitions. [2023-12-25 07:53:02,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2023-12-25 07:53:02,867 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:53:02,867 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:53:02,882 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 [2023-12-25 07:53:03,070 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 [2023-12-25 07:53:03,070 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:53:03,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:53:03,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1083776528, now seen corresponding path program 2 times [2023-12-25 07:53:03,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:53:03,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1646122895] [2023-12-25 07:53:03,071 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 07:53:03,071 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 [2023-12-25 07:53:03,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:53:03,072 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) [2023-12-25 07:53:03,074 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 [2023-12-25 07:53:03,152 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-25 07:53:03,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 07:53:03,154 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-25 07:53:03,157 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:53:04,695 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2023-12-25 07:53:04,695 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:53:04,695 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:53:04,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1646122895] [2023-12-25 07:53:04,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1646122895] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:53:04,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:53:04,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-25 07:53:04,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436199949] [2023-12-25 07:53:04,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:53:04,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-25 07:53:04,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:53:04,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-25 07:53:04,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-12-25 07:53:04,697 INFO L87 Difference]: Start difference. First operand 40046 states and 46804 transitions. Second operand has 8 states, 8 states have (on average 13.25) internal successors, (106), 8 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:53:08,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:53:08,529 INFO L93 Difference]: Finished difference Result 53949 states and 64139 transitions. [2023-12-25 07:53:08,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 07:53:08,530 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.25) internal successors, (106), 8 states have internal predecessors, (106), 0 states have call successors, (0), 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 216 [2023-12-25 07:53:08,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:53:08,584 INFO L225 Difference]: With dead ends: 53949 [2023-12-25 07:53:08,584 INFO L226 Difference]: Without dead ends: 50443 [2023-12-25 07:53:08,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-12-25 07:53:08,593 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 415 mSDsluCounter, 621 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 798 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 07:53:08,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [415 Valid, 798 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 07:53:08,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50443 states. [2023-12-25 07:53:12,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50443 to 43189. [2023-12-25 07:53:12,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43189 states, 43188 states have (on average 1.1672223765860887) internal successors, (50410), 43188 states have internal predecessors, (50410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:53:12,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43189 states to 43189 states and 50410 transitions. [2023-12-25 07:53:12,257 INFO L78 Accepts]: Start accepts. Automaton has 43189 states and 50410 transitions. Word has length 216 [2023-12-25 07:53:12,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:53:12,257 INFO L495 AbstractCegarLoop]: Abstraction has 43189 states and 50410 transitions. [2023-12-25 07:53:12,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.25) internal successors, (106), 8 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:53:12,257 INFO L276 IsEmpty]: Start isEmpty. Operand 43189 states and 50410 transitions. [2023-12-25 07:53:12,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2023-12-25 07:53:12,266 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:53:12,266 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:53:12,269 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 [2023-12-25 07:53:12,468 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 [2023-12-25 07:53:12,469 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:53:12,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:53:12,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1581777332, now seen corresponding path program 2 times [2023-12-25 07:53:12,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:53:12,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1643232216] [2023-12-25 07:53:12,470 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 07:53:12,470 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 [2023-12-25 07:53:12,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:53:12,471 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) [2023-12-25 07:53:12,472 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 [2023-12-25 07:53:12,537 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-25 07:53:12,537 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 07:53:12,540 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-25 07:53:12,542 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:53:14,377 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-25 07:53:14,377 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:53:14,377 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:53:14,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1643232216] [2023-12-25 07:53:14,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1643232216] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:53:14,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:53:14,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-25 07:53:14,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357059896] [2023-12-25 07:53:14,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:53:14,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-25 07:53:14,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:53:14,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-25 07:53:14,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-12-25 07:53:14,378 INFO L87 Difference]: Start difference. First operand 43189 states and 50410 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 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) [2023-12-25 07:53:18,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:53:18,296 INFO L93 Difference]: Finished difference Result 58148 states and 69057 transitions. [2023-12-25 07:53:18,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 07:53:18,298 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 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 216 [2023-12-25 07:53:18,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:53:18,354 INFO L225 Difference]: With dead ends: 58148 [2023-12-25 07:53:18,355 INFO L226 Difference]: Without dead ends: 53624 [2023-12-25 07:53:18,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-12-25 07:53:18,364 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 440 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 07:53:18,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [440 Valid, 588 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 07:53:18,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53624 states. [2023-12-25 07:53:22,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53624 to 47036. [2023-12-25 07:53:22,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47036 states, 47035 states have (on average 1.1650260444349951) internal successors, (54797), 47035 states have internal predecessors, (54797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:53:22,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47036 states to 47036 states and 54797 transitions. [2023-12-25 07:53:22,815 INFO L78 Accepts]: Start accepts. Automaton has 47036 states and 54797 transitions. Word has length 216 [2023-12-25 07:53:22,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:53:22,815 INFO L495 AbstractCegarLoop]: Abstraction has 47036 states and 54797 transitions. [2023-12-25 07:53:22,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 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) [2023-12-25 07:53:22,815 INFO L276 IsEmpty]: Start isEmpty. Operand 47036 states and 54797 transitions. [2023-12-25 07:53:22,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2023-12-25 07:53:22,824 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:53:22,824 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:53:22,826 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Ended with exit code 0 [2023-12-25 07:53:23,026 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 [2023-12-25 07:53:23,026 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:53:23,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:53:23,026 INFO L85 PathProgramCache]: Analyzing trace with hash 290047120, now seen corresponding path program 2 times [2023-12-25 07:53:23,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:53:23,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [923762200] [2023-12-25 07:53:23,027 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 07:53:23,027 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 [2023-12-25 07:53:23,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:53:23,028 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) [2023-12-25 07:53:23,053 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 [2023-12-25 07:53:23,093 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-25 07:53:23,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 07:53:23,095 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-25 07:53:23,097 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:53:24,984 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2023-12-25 07:53:24,984 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:53:24,984 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:53:24,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [923762200] [2023-12-25 07:53:24,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [923762200] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:53:24,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:53:24,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-25 07:53:24,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737667487] [2023-12-25 07:53:24,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:53:24,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-25 07:53:24,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:53:24,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-25 07:53:24,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-12-25 07:53:24,985 INFO L87 Difference]: Start difference. First operand 47036 states and 54797 transitions. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:53:29,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:53:29,483 INFO L93 Difference]: Finished difference Result 62842 states and 74486 transitions. [2023-12-25 07:53:29,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 07:53:29,484 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 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 216 [2023-12-25 07:53:29,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:53:29,549 INFO L225 Difference]: With dead ends: 62842 [2023-12-25 07:53:29,550 INFO L226 Difference]: Without dead ends: 57961 [2023-12-25 07:53:29,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-12-25 07:53:29,557 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 416 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 07:53:29,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [416 Valid, 641 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 07:53:29,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57961 states. [2023-12-25 07:53:33,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57961 to 51373. [2023-12-25 07:53:33,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51373 states, 51372 states have (on average 1.1642139686989021) internal successors, (59808), 51372 states have internal predecessors, (59808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:53:33,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51373 states to 51373 states and 59808 transitions. [2023-12-25 07:53:33,988 INFO L78 Accepts]: Start accepts. Automaton has 51373 states and 59808 transitions. Word has length 216 [2023-12-25 07:53:33,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:53:33,988 INFO L495 AbstractCegarLoop]: Abstraction has 51373 states and 59808 transitions. [2023-12-25 07:53:33,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:53:33,988 INFO L276 IsEmpty]: Start isEmpty. Operand 51373 states and 59808 transitions. [2023-12-25 07:53:34,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2023-12-25 07:53:34,000 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:53:34,000 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:53:34,002 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 (42)] Ended with exit code 0 [2023-12-25 07:53:34,202 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 [2023-12-25 07:53:34,202 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:53:34,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:53:34,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1107866433, now seen corresponding path program 1 times [2023-12-25 07:53:34,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:53:34,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1132115453] [2023-12-25 07:53:34,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:53:34,203 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 [2023-12-25 07:53:34,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:53:34,204 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) [2023-12-25 07:53:34,230 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 [2023-12-25 07:53:34,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:53:34,356 INFO L262 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-25 07:53:34,359 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:53:36,259 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 38 proven. 296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:53:36,259 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 07:53:37,097 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 38 proven. 296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:53:37,098 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:53:37,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1132115453] [2023-12-25 07:53:37,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1132115453] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 07:53:37,106 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 07:53:37,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 36 [2023-12-25 07:53:37,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705122889] [2023-12-25 07:53:37,107 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 07:53:37,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-25 07:53:37,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:53:37,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-25 07:53:37,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1152, Unknown=0, NotChecked=0, Total=1260 [2023-12-25 07:53:37,108 INFO L87 Difference]: Start difference. First operand 51373 states and 59808 transitions. Second operand has 36 states, 36 states have (on average 11.722222222222221) internal successors, (422), 36 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:53:54,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:53:54,914 INFO L93 Difference]: Finished difference Result 70755 states and 82393 transitions. [2023-12-25 07:53:54,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2023-12-25 07:53:54,914 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 11.722222222222221) internal successors, (422), 36 states have internal predecessors, (422), 0 states have call successors, (0), 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 217 [2023-12-25 07:53:54,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:53:54,981 INFO L225 Difference]: With dead ends: 70755 [2023-12-25 07:53:54,981 INFO L226 Difference]: Without dead ends: 63697 [2023-12-25 07:53:54,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 527 GetRequests, 398 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4412 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=2186, Invalid=14844, Unknown=0, NotChecked=0, Total=17030 [2023-12-25 07:53:54,991 INFO L413 NwaCegarLoop]: 335 mSDtfsCounter, 1316 mSDsluCounter, 5904 mSDsCounter, 0 mSdLazyCounter, 7292 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1316 SdHoareTripleChecker+Valid, 6239 SdHoareTripleChecker+Invalid, 7313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 7292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-12-25 07:53:54,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1316 Valid, 6239 Invalid, 7313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 7292 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2023-12-25 07:53:55,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63697 states. [2023-12-25 07:53:57,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63697 to 28387. [2023-12-25 07:53:58,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28387 states, 28386 states have (on average 1.1659268653561614) internal successors, (33096), 28386 states have internal predecessors, (33096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:53:58,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28387 states to 28387 states and 33096 transitions. [2023-12-25 07:53:58,033 INFO L78 Accepts]: Start accepts. Automaton has 28387 states and 33096 transitions. Word has length 217 [2023-12-25 07:53:58,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:53:58,034 INFO L495 AbstractCegarLoop]: Abstraction has 28387 states and 33096 transitions. [2023-12-25 07:53:58,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 11.722222222222221) internal successors, (422), 36 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:53:58,034 INFO L276 IsEmpty]: Start isEmpty. Operand 28387 states and 33096 transitions. [2023-12-25 07:53:58,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2023-12-25 07:53:58,038 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:53:58,039 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:53:58,042 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 (43)] Ended with exit code 0 [2023-12-25 07:53:58,242 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 [2023-12-25 07:53:58,242 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:53:58,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:53:58,242 INFO L85 PathProgramCache]: Analyzing trace with hash 635635941, now seen corresponding path program 1 times [2023-12-25 07:53:58,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:53:58,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [754337287] [2023-12-25 07:53:58,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:53:58,243 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 [2023-12-25 07:53:58,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:53:58,244 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) [2023-12-25 07:53:58,246 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 [2023-12-25 07:53:58,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:53:58,405 INFO L262 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-25 07:53:58,408 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:54:00,332 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 54 proven. 280 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:54:00,332 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 07:54:01,094 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 54 proven. 280 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:54:01,094 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:54:01,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [754337287] [2023-12-25 07:54:01,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [754337287] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 07:54:01,094 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 07:54:01,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 36 [2023-12-25 07:54:01,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095223358] [2023-12-25 07:54:01,094 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 07:54:01,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-25 07:54:01,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:54:01,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-25 07:54:01,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1152, Unknown=0, NotChecked=0, Total=1260 [2023-12-25 07:54:01,099 INFO L87 Difference]: Start difference. First operand 28387 states and 33096 transitions. Second operand has 36 states, 36 states have (on average 11.583333333333334) internal successors, (417), 36 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:54:12,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:54:12,952 INFO L93 Difference]: Finished difference Result 46294 states and 54029 transitions. [2023-12-25 07:54:12,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-12-25 07:54:12,953 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 11.583333333333334) internal successors, (417), 36 states have internal predecessors, (417), 0 states have call successors, (0), 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 217 [2023-12-25 07:54:12,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:54:12,994 INFO L225 Difference]: With dead ends: 46294 [2023-12-25 07:54:12,994 INFO L226 Difference]: Without dead ends: 39551 [2023-12-25 07:54:13,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 398 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1854 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=960, Invalid=7412, Unknown=0, NotChecked=0, Total=8372 [2023-12-25 07:54:13,004 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 941 mSDsluCounter, 5169 mSDsCounter, 0 mSdLazyCounter, 5755 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 941 SdHoareTripleChecker+Valid, 5417 SdHoareTripleChecker+Invalid, 5771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 5755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-12-25 07:54:13,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [941 Valid, 5417 Invalid, 5771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 5755 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-12-25 07:54:13,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39551 states. [2023-12-25 07:54:15,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39551 to 33035. [2023-12-25 07:54:15,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33035 states, 33034 states have (on average 1.1658896894109099) internal successors, (38514), 33034 states have internal predecessors, (38514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:54:16,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33035 states to 33035 states and 38514 transitions. [2023-12-25 07:54:16,031 INFO L78 Accepts]: Start accepts. Automaton has 33035 states and 38514 transitions. Word has length 217 [2023-12-25 07:54:16,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:54:16,031 INFO L495 AbstractCegarLoop]: Abstraction has 33035 states and 38514 transitions. [2023-12-25 07:54:16,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 11.583333333333334) internal successors, (417), 36 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:54:16,031 INFO L276 IsEmpty]: Start isEmpty. Operand 33035 states and 38514 transitions. [2023-12-25 07:54:16,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2023-12-25 07:54:16,037 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:54:16,037 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:54:16,043 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 (44)] Ended with exit code 0 [2023-12-25 07:54:16,241 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 [2023-12-25 07:54:16,241 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:54:16,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:54:16,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1106208319, now seen corresponding path program 1 times [2023-12-25 07:54:16,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:54:16,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [978963898] [2023-12-25 07:54:16,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:54:16,250 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 [2023-12-25 07:54:16,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:54:16,251 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) [2023-12-25 07:54:16,252 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 [2023-12-25 07:54:16,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:54:16,411 INFO L262 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-25 07:54:16,413 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:54:18,309 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 70 proven. 264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:54:18,310 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 07:54:19,019 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 70 proven. 264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:54:19,020 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:54:19,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [978963898] [2023-12-25 07:54:19,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [978963898] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 07:54:19,020 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 07:54:19,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 36 [2023-12-25 07:54:19,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832873745] [2023-12-25 07:54:19,020 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 07:54:19,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-25 07:54:19,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:54:19,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-25 07:54:19,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1152, Unknown=0, NotChecked=0, Total=1260 [2023-12-25 07:54:19,021 INFO L87 Difference]: Start difference. First operand 33035 states and 38514 transitions. Second operand has 36 states, 36 states have (on average 11.444444444444445) internal successors, (412), 36 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:54:35,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:54:35,784 INFO L93 Difference]: Finished difference Result 54289 states and 63444 transitions. [2023-12-25 07:54:35,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2023-12-25 07:54:35,784 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 11.444444444444445) internal successors, (412), 36 states have internal predecessors, (412), 0 states have call successors, (0), 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 217 [2023-12-25 07:54:35,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:54:35,827 INFO L225 Difference]: With dead ends: 54289 [2023-12-25 07:54:35,827 INFO L226 Difference]: Without dead ends: 45793 [2023-12-25 07:54:35,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 527 GetRequests, 398 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4467 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=2311, Invalid=14719, Unknown=0, NotChecked=0, Total=17030 [2023-12-25 07:54:35,837 INFO L413 NwaCegarLoop]: 304 mSDtfsCounter, 1290 mSDsluCounter, 5124 mSDsCounter, 0 mSdLazyCounter, 6073 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1290 SdHoareTripleChecker+Valid, 5428 SdHoareTripleChecker+Invalid, 6098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 6073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-12-25 07:54:35,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1290 Valid, 5428 Invalid, 6098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 6073 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-12-25 07:54:35,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45793 states. [2023-12-25 07:54:39,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45793 to 37126. [2023-12-25 07:54:39,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37126 states, 37125 states have (on average 1.168053872053872) internal successors, (43364), 37125 states have internal predecessors, (43364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:54:39,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37126 states to 37126 states and 43364 transitions. [2023-12-25 07:54:39,410 INFO L78 Accepts]: Start accepts. Automaton has 37126 states and 43364 transitions. Word has length 217 [2023-12-25 07:54:39,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:54:39,410 INFO L495 AbstractCegarLoop]: Abstraction has 37126 states and 43364 transitions. [2023-12-25 07:54:39,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 11.444444444444445) internal successors, (412), 36 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:54:39,411 INFO L276 IsEmpty]: Start isEmpty. Operand 37126 states and 43364 transitions. [2023-12-25 07:54:39,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2023-12-25 07:54:39,417 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:54:39,417 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:54:39,421 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 [2023-12-25 07:54:39,620 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 [2023-12-25 07:54:39,621 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:54:39,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:54:39,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1799828069, now seen corresponding path program 1 times [2023-12-25 07:54:39,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:54:39,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1386808713] [2023-12-25 07:54:39,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:54:39,622 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:54:39,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:54:39,623 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) [2023-12-25 07:54:39,624 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 [2023-12-25 07:54:39,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:54:39,783 INFO L262 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-25 07:54:39,785 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:54:41,616 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 86 proven. 248 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:54:41,616 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 07:54:42,383 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 86 proven. 248 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:54:42,383 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:54:42,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1386808713] [2023-12-25 07:54:42,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1386808713] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 07:54:42,387 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 07:54:42,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 36 [2023-12-25 07:54:42,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120852024] [2023-12-25 07:54:42,388 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 07:54:42,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-25 07:54:42,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:54:42,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-25 07:54:42,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1152, Unknown=0, NotChecked=0, Total=1260 [2023-12-25 07:54:42,389 INFO L87 Difference]: Start difference. First operand 37126 states and 43364 transitions. Second operand has 36 states, 36 states have (on average 11.305555555555555) internal successors, (407), 36 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:55:07,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:55:07,254 INFO L93 Difference]: Finished difference Result 103613 states and 119843 transitions. [2023-12-25 07:55:07,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2023-12-25 07:55:07,254 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 11.305555555555555) internal successors, (407), 36 states have internal predecessors, (407), 0 states have call successors, (0), 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 217 [2023-12-25 07:55:07,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:55:07,350 INFO L225 Difference]: With dead ends: 103613 [2023-12-25 07:55:07,351 INFO L226 Difference]: Without dead ends: 93579 [2023-12-25 07:55:07,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 539 GetRequests, 398 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5751 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=2694, Invalid=17612, Unknown=0, NotChecked=0, Total=20306 [2023-12-25 07:55:07,367 INFO L413 NwaCegarLoop]: 324 mSDtfsCounter, 1491 mSDsluCounter, 5796 mSDsCounter, 0 mSdLazyCounter, 7169 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1491 SdHoareTripleChecker+Valid, 6120 SdHoareTripleChecker+Invalid, 7205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 7169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-12-25 07:55:07,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1491 Valid, 6120 Invalid, 7205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 7169 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2023-12-25 07:55:07,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93579 states. [2023-12-25 07:55:15,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93579 to 72435. [2023-12-25 07:55:15,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72435 states, 72434 states have (on average 1.1590965568655605) internal successors, (83958), 72434 states have internal predecessors, (83958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:55:15,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72435 states to 72435 states and 83958 transitions. [2023-12-25 07:55:15,734 INFO L78 Accepts]: Start accepts. Automaton has 72435 states and 83958 transitions. Word has length 217 [2023-12-25 07:55:15,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:55:15,734 INFO L495 AbstractCegarLoop]: Abstraction has 72435 states and 83958 transitions. [2023-12-25 07:55:15,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 11.305555555555555) internal successors, (407), 36 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:55:15,734 INFO L276 IsEmpty]: Start isEmpty. Operand 72435 states and 83958 transitions. [2023-12-25 07:55:15,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2023-12-25 07:55:15,744 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:55:15,744 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:55:15,747 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 (46)] Forceful destruction successful, exit code 0 [2023-12-25 07:55:15,947 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 [2023-12-25 07:55:15,948 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:55:15,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:55:15,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1553284984, now seen corresponding path program 1 times [2023-12-25 07:55:15,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:55:15,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1185027464] [2023-12-25 07:55:15,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:55:15,948 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 [2023-12-25 07:55:15,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:55:15,949 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) [2023-12-25 07:55:15,951 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 [2023-12-25 07:55:16,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:55:16,115 INFO L262 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-25 07:55:16,118 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:55:18,077 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 32 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:55:18,078 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 07:55:19,207 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 32 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:55:19,207 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:55:19,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1185027464] [2023-12-25 07:55:19,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1185027464] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 07:55:19,208 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 07:55:19,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 36 [2023-12-25 07:55:19,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065813954] [2023-12-25 07:55:19,208 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 07:55:19,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-25 07:55:19,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:55:19,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-25 07:55:19,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1152, Unknown=0, NotChecked=0, Total=1260 [2023-12-25 07:55:19,209 INFO L87 Difference]: Start difference. First operand 72435 states and 83958 transitions. Second operand has 36 states, 36 states have (on average 11.88888888888889) internal successors, (428), 36 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) [2023-12-25 07:55:49,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:55:49,198 INFO L93 Difference]: Finished difference Result 175396 states and 202951 transitions. [2023-12-25 07:55:49,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2023-12-25 07:55:49,198 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 11.88888888888889) internal successors, (428), 36 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) Word has length 218 [2023-12-25 07:55:49,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:55:49,391 INFO L225 Difference]: With dead ends: 175396 [2023-12-25 07:55:49,391 INFO L226 Difference]: Without dead ends: 162273 [2023-12-25 07:55:49,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 526 GetRequests, 400 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4172 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=2091, Invalid=14165, Unknown=0, NotChecked=0, Total=16256 [2023-12-25 07:55:49,414 INFO L413 NwaCegarLoop]: 319 mSDtfsCounter, 964 mSDsluCounter, 5993 mSDsCounter, 0 mSdLazyCounter, 7522 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 964 SdHoareTripleChecker+Valid, 6312 SdHoareTripleChecker+Invalid, 7541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 7522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:55:49,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [964 Valid, 6312 Invalid, 7541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 7522 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-12-25 07:55:49,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162273 states. [2023-12-25 07:56:05,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162273 to 145769. [2023-12-25 07:56:05,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145769 states, 145768 states have (on average 1.1578261346797651) internal successors, (168774), 145768 states have internal predecessors, (168774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:05,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145769 states to 145769 states and 168774 transitions. [2023-12-25 07:56:05,388 INFO L78 Accepts]: Start accepts. Automaton has 145769 states and 168774 transitions. Word has length 218 [2023-12-25 07:56:05,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:56:05,388 INFO L495 AbstractCegarLoop]: Abstraction has 145769 states and 168774 transitions. [2023-12-25 07:56:05,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 11.88888888888889) internal successors, (428), 36 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) [2023-12-25 07:56:05,389 INFO L276 IsEmpty]: Start isEmpty. Operand 145769 states and 168774 transitions. [2023-12-25 07:56:05,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2023-12-25 07:56:05,471 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:56:05,471 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:56:05,478 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 [2023-12-25 07:56:05,675 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 [2023-12-25 07:56:05,676 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:56:05,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:56:05,676 INFO L85 PathProgramCache]: Analyzing trace with hash -804971926, now seen corresponding path program 2 times [2023-12-25 07:56:05,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:56:05,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1356424132] [2023-12-25 07:56:05,677 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 07:56:05,677 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 [2023-12-25 07:56:05,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:56:05,677 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) [2023-12-25 07:56:05,703 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 [2023-12-25 07:56:05,750 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-25 07:56:05,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 07:56:05,754 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-25 07:56:05,757 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:56:08,180 INFO L134 CoverageAnalysis]: Checked inductivity of 640 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 494 trivial. 0 not checked. [2023-12-25 07:56:08,180 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:56:08,180 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:56:08,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1356424132] [2023-12-25 07:56:08,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1356424132] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:56:08,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:56:08,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-25 07:56:08,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91161484] [2023-12-25 07:56:08,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:56:08,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-25 07:56:08,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:56:08,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-25 07:56:08,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-12-25 07:56:08,182 INFO L87 Difference]: Start difference. First operand 145769 states and 168774 transitions. Second operand has 8 states, 8 states have (on average 15.125) internal successors, (121), 8 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:25,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:56:25,028 INFO L93 Difference]: Finished difference Result 177204 states and 207796 transitions. [2023-12-25 07:56:25,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 07:56:25,029 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.125) internal successors, (121), 8 states have internal predecessors, (121), 0 states have call successors, (0), 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 274 [2023-12-25 07:56:25,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:56:25,209 INFO L225 Difference]: With dead ends: 177204 [2023-12-25 07:56:25,209 INFO L226 Difference]: Without dead ends: 165382 [2023-12-25 07:56:25,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-12-25 07:56:25,236 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 653 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 653 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 07:56:25,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [653 Valid, 572 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 07:56:25,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165382 states. [2023-12-25 07:56:42,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165382 to 154145. [2023-12-25 07:56:42,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154145 states, 154144 states have (on average 1.1572879904504878) internal successors, (178389), 154144 states have internal predecessors, (178389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:42,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154145 states to 154145 states and 178389 transitions. [2023-12-25 07:56:42,994 INFO L78 Accepts]: Start accepts. Automaton has 154145 states and 178389 transitions. Word has length 274 [2023-12-25 07:56:42,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:56:42,994 INFO L495 AbstractCegarLoop]: Abstraction has 154145 states and 178389 transitions. [2023-12-25 07:56:42,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.125) internal successors, (121), 8 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:42,994 INFO L276 IsEmpty]: Start isEmpty. Operand 154145 states and 178389 transitions. [2023-12-25 07:56:43,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2023-12-25 07:56:43,072 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:56:43,072 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:56:43,075 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 (48)] Ended with exit code 0 [2023-12-25 07:56:43,275 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 [2023-12-25 07:56:43,275 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:56:43,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:56:43,276 INFO L85 PathProgramCache]: Analyzing trace with hash -2080991285, now seen corresponding path program 1 times [2023-12-25 07:56:43,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:56:43,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [371953265] [2023-12-25 07:56:43,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:56:43,276 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 [2023-12-25 07:56:43,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:56:43,277 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) [2023-12-25 07:56:43,281 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 [2023-12-25 07:56:43,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:56:43,487 INFO L262 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-25 07:56:43,500 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:56:46,235 INFO L134 CoverageAnalysis]: Checked inductivity of 640 backedges. 146 proven. 494 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:56:46,235 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 07:56:47,343 INFO L134 CoverageAnalysis]: Checked inductivity of 640 backedges. 146 proven. 494 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:56:47,344 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:56:47,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [371953265] [2023-12-25 07:56:47,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [371953265] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 07:56:47,344 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 07:56:47,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23] total 46 [2023-12-25 07:56:47,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350471595] [2023-12-25 07:56:47,344 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 07:56:47,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-12-25 07:56:47,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:56:47,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-12-25 07:56:47,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=1929, Unknown=0, NotChecked=0, Total=2070 [2023-12-25 07:56:47,346 INFO L87 Difference]: Start difference. First operand 154145 states and 178389 transitions. Second operand has 46 states, 46 states have (on average 11.26086956521739) internal successors, (518), 46 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:57:50,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:57:50,942 INFO L93 Difference]: Finished difference Result 199683 states and 230861 transitions. [2023-12-25 07:57:50,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 227 states. [2023-12-25 07:57:50,942 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 11.26086956521739) internal successors, (518), 46 states have internal predecessors, (518), 0 states have call successors, (0), 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 275 [2023-12-25 07:57:50,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:57:51,214 INFO L225 Difference]: With dead ends: 199683 [2023-12-25 07:57:51,214 INFO L226 Difference]: Without dead ends: 179485 [2023-12-25 07:57:51,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 770 GetRequests, 504 SyntacticMatches, 0 SemanticMatches, 266 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23299 ImplicationChecksByTransitivity, 31.3s TimeCoverageRelationStatistics Valid=7432, Invalid=64124, Unknown=0, NotChecked=0, Total=71556 [2023-12-25 07:57:51,265 INFO L413 NwaCegarLoop]: 546 mSDtfsCounter, 1737 mSDsluCounter, 12394 mSDsCounter, 0 mSdLazyCounter, 17904 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1737 SdHoareTripleChecker+Valid, 12940 SdHoareTripleChecker+Invalid, 17938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 17904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.2s IncrementalHoareTripleChecker+Time [2023-12-25 07:57:51,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1737 Valid, 12940 Invalid, 17938 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [34 Valid, 17904 Invalid, 0 Unknown, 0 Unchecked, 15.2s Time] [2023-12-25 07:57:51,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179485 states. [2023-12-25 07:58:03,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179485 to 79383. [2023-12-25 07:58:03,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79383 states, 79382 states have (on average 1.1592552467813861) internal successors, (92024), 79382 states have internal predecessors, (92024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:58:03,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79383 states to 79383 states and 92024 transitions. [2023-12-25 07:58:03,552 INFO L78 Accepts]: Start accepts. Automaton has 79383 states and 92024 transitions. Word has length 275 [2023-12-25 07:58:03,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:58:03,553 INFO L495 AbstractCegarLoop]: Abstraction has 79383 states and 92024 transitions. [2023-12-25 07:58:03,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 11.26086956521739) internal successors, (518), 46 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:58:03,553 INFO L276 IsEmpty]: Start isEmpty. Operand 79383 states and 92024 transitions. [2023-12-25 07:58:03,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2023-12-25 07:58:03,586 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:58:03,587 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:58:03,590 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 (49)] Ended with exit code 0 [2023-12-25 07:58:03,790 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 [2023-12-25 07:58:03,790 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:58:03,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:58:03,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1112216885, now seen corresponding path program 2 times [2023-12-25 07:58:03,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:58:03,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1374485735] [2023-12-25 07:58:03,791 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 07:58:03,791 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 [2023-12-25 07:58:03,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:58:03,792 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) [2023-12-25 07:58:03,816 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 [2023-12-25 07:58:04,083 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 07:58:04,083 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 07:58:04,089 INFO L262 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-25 07:58:04,093 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:58:06,782 INFO L134 CoverageAnalysis]: Checked inductivity of 640 backedges. 31 proven. 609 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:58:06,783 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 07:58:07,753 INFO L134 CoverageAnalysis]: Checked inductivity of 640 backedges. 31 proven. 609 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:58:07,753 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:58:07,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1374485735] [2023-12-25 07:58:07,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1374485735] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 07:58:07,753 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 07:58:07,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23] total 46 [2023-12-25 07:58:07,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098274045] [2023-12-25 07:58:07,753 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 07:58:07,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-12-25 07:58:07,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:58:07,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-12-25 07:58:07,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=1929, Unknown=0, NotChecked=0, Total=2070 [2023-12-25 07:58:07,755 INFO L87 Difference]: Start difference. First operand 79383 states and 92024 transitions. Second operand has 46 states, 46 states have (on average 11.826086956521738) internal successors, (544), 46 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:58:50,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:58:50,858 INFO L93 Difference]: Finished difference Result 109030 states and 126371 transitions. [2023-12-25 07:58:50,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2023-12-25 07:58:50,859 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 11.826086956521738) internal successors, (544), 46 states have internal predecessors, (544), 0 states have call successors, (0), 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 275 [2023-12-25 07:58:50,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:58:50,969 INFO L225 Difference]: With dead ends: 109030 [2023-12-25 07:58:50,969 INFO L226 Difference]: Without dead ends: 96055 [2023-12-25 07:58:50,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 713 GetRequests, 504 SyntacticMatches, 0 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13082 ImplicationChecksByTransitivity, 20.8s TimeCoverageRelationStatistics Valid=4703, Invalid=39607, Unknown=0, NotChecked=0, Total=44310 [2023-12-25 07:58:50,994 INFO L413 NwaCegarLoop]: 451 mSDtfsCounter, 1706 mSDsluCounter, 9852 mSDsCounter, 0 mSdLazyCounter, 14242 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1706 SdHoareTripleChecker+Valid, 10303 SdHoareTripleChecker+Invalid, 14269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 14242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2023-12-25 07:58:50,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1706 Valid, 10303 Invalid, 14269 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [27 Valid, 14242 Invalid, 0 Unknown, 0 Unchecked, 10.8s Time] [2023-12-25 07:58:51,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96055 states. [2023-12-25 07:59:03,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96055 to 85265. [2023-12-25 07:59:03,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85265 states, 85264 states have (on average 1.1589181835241134) internal successors, (98814), 85264 states have internal predecessors, (98814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:59:03,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85265 states to 85265 states and 98814 transitions. [2023-12-25 07:59:03,267 INFO L78 Accepts]: Start accepts. Automaton has 85265 states and 98814 transitions. Word has length 275 [2023-12-25 07:59:03,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:59:03,267 INFO L495 AbstractCegarLoop]: Abstraction has 85265 states and 98814 transitions. [2023-12-25 07:59:03,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 11.826086956521738) internal successors, (544), 46 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:59:03,267 INFO L276 IsEmpty]: Start isEmpty. Operand 85265 states and 98814 transitions. [2023-12-25 07:59:03,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2023-12-25 07:59:03,298 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:59:03,298 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:59:03,305 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 [2023-12-25 07:59:03,502 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 [2023-12-25 07:59:03,502 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:59:03,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:59:03,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1229741805, now seen corresponding path program 1 times [2023-12-25 07:59:03,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:59:03,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1156249092] [2023-12-25 07:59:03,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:59:03,503 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 [2023-12-25 07:59:03,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:59:03,505 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) [2023-12-25 07:59:03,661 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 [2023-12-25 07:59:03,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:59:03,857 INFO L262 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-25 07:59:03,861 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:59:06,403 INFO L134 CoverageAnalysis]: Checked inductivity of 640 backedges. 77 proven. 563 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:59:06,404 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 07:59:07,452 INFO L134 CoverageAnalysis]: Checked inductivity of 640 backedges. 77 proven. 563 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:59:07,452 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:59:07,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1156249092] [2023-12-25 07:59:07,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1156249092] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 07:59:07,452 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 07:59:07,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23] total 46 [2023-12-25 07:59:07,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036974139] [2023-12-25 07:59:07,452 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 07:59:07,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-12-25 07:59:07,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:59:07,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-12-25 07:59:07,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=1929, Unknown=0, NotChecked=0, Total=2070 [2023-12-25 07:59:07,457 INFO L87 Difference]: Start difference. First operand 85265 states and 98814 transitions. Second operand has 46 states, 46 states have (on average 11.58695652173913) internal successors, (533), 46 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:59:55,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:59:55,666 INFO L93 Difference]: Finished difference Result 117262 states and 136047 transitions. [2023-12-25 07:59:55,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 174 states. [2023-12-25 07:59:55,666 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 11.58695652173913) internal successors, (533), 46 states have internal predecessors, (533), 0 states have call successors, (0), 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 275 [2023-12-25 07:59:55,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:59:55,824 INFO L225 Difference]: With dead ends: 117262 [2023-12-25 07:59:55,825 INFO L226 Difference]: Without dead ends: 105398 [2023-12-25 07:59:55,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 717 GetRequests, 504 SyntacticMatches, 0 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13756 ImplicationChecksByTransitivity, 23.7s TimeCoverageRelationStatistics Valid=5081, Invalid=40929, Unknown=0, NotChecked=0, Total=46010 [2023-12-25 07:59:55,859 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 1730 mSDsluCounter, 11011 mSDsCounter, 0 mSdLazyCounter, 14674 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1730 SdHoareTripleChecker+Valid, 11452 SdHoareTripleChecker+Invalid, 14704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 14674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2023-12-25 07:59:55,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1730 Valid, 11452 Invalid, 14704 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [30 Valid, 14674 Invalid, 0 Unknown, 0 Unchecked, 12.2s Time] [2023-12-25 07:59:55,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105398 states. [2023-12-25 08:00:04,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105398 to 50626. [2023-12-25 08:00:04,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50626 states, 50625 states have (on average 1.1596444444444445) internal successors, (58707), 50625 states have internal predecessors, (58707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:00:04,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50626 states to 50626 states and 58707 transitions. [2023-12-25 08:00:04,639 INFO L78 Accepts]: Start accepts. Automaton has 50626 states and 58707 transitions. Word has length 275 [2023-12-25 08:00:04,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 08:00:04,640 INFO L495 AbstractCegarLoop]: Abstraction has 50626 states and 58707 transitions. [2023-12-25 08:00:04,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 11.58695652173913) internal successors, (533), 46 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:00:04,640 INFO L276 IsEmpty]: Start isEmpty. Operand 50626 states and 58707 transitions. [2023-12-25 08:00:04,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2023-12-25 08:00:04,657 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 08:00:04,657 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 08:00:04,677 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 [2023-12-25 08:00:04,863 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 [2023-12-25 08:00:04,863 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 08:00:04,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 08:00:04,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1323381231, now seen corresponding path program 1 times [2023-12-25 08:00:04,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 08:00:04,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1514411420] [2023-12-25 08:00:04,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 08:00:04,864 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 [2023-12-25 08:00:04,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 08:00:04,865 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) [2023-12-25 08:00:04,903 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 [2023-12-25 08:00:05,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 08:00:05,129 INFO L262 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-25 08:00:05,133 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 08:00:08,170 INFO L134 CoverageAnalysis]: Checked inductivity of 640 backedges. 100 proven. 540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 08:00:08,171 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 08:00:09,350 INFO L134 CoverageAnalysis]: Checked inductivity of 640 backedges. 100 proven. 540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 08:00:09,350 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 08:00:09,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1514411420] [2023-12-25 08:00:09,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1514411420] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 08:00:09,350 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 08:00:09,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23] total 46 [2023-12-25 08:00:09,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521210911] [2023-12-25 08:00:09,351 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 08:00:09,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-12-25 08:00:09,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 08:00:09,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-12-25 08:00:09,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=1929, Unknown=0, NotChecked=0, Total=2070 [2023-12-25 08:00:09,352 INFO L87 Difference]: Start difference. First operand 50626 states and 58707 transitions. Second operand has 46 states, 46 states have (on average 11.478260869565217) internal successors, (528), 46 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) [2023-12-25 08:01:01,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 08:01:01,137 INFO L93 Difference]: Finished difference Result 79993 states and 92890 transitions. [2023-12-25 08:01:01,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2023-12-25 08:01:01,137 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 11.478260869565217) internal successors, (528), 46 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) Word has length 275 [2023-12-25 08:01:01,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 08:01:01,216 INFO L225 Difference]: With dead ends: 79993 [2023-12-25 08:01:01,216 INFO L226 Difference]: Without dead ends: 68917 [2023-12-25 08:01:01,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 735 GetRequests, 504 SyntacticMatches, 0 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16976 ImplicationChecksByTransitivity, 28.0s TimeCoverageRelationStatistics Valid=5842, Invalid=48214, Unknown=0, NotChecked=0, Total=54056 [2023-12-25 08:01:01,228 INFO L413 NwaCegarLoop]: 470 mSDtfsCounter, 2027 mSDsluCounter, 11819 mSDsCounter, 0 mSdLazyCounter, 15796 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2027 SdHoareTripleChecker+Valid, 12289 SdHoareTripleChecker+Invalid, 15833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 15796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.8s IncrementalHoareTripleChecker+Time [2023-12-25 08:01:01,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2027 Valid, 12289 Invalid, 15833 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [37 Valid, 15796 Invalid, 0 Unknown, 0 Unchecked, 14.8s Time] [2023-12-25 08:01:01,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68917 states. [2023-12-25 08:01:10,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68917 to 54726. [2023-12-25 08:01:10,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54726 states, 54725 states have (on average 1.16133394243947) internal successors, (63554), 54725 states have internal predecessors, (63554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:01:10,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54726 states to 54726 states and 63554 transitions. [2023-12-25 08:01:10,398 INFO L78 Accepts]: Start accepts. Automaton has 54726 states and 63554 transitions. Word has length 275 [2023-12-25 08:01:10,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 08:01:10,398 INFO L495 AbstractCegarLoop]: Abstraction has 54726 states and 63554 transitions. [2023-12-25 08:01:10,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 11.478260869565217) internal successors, (528), 46 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) [2023-12-25 08:01:10,399 INFO L276 IsEmpty]: Start isEmpty. Operand 54726 states and 63554 transitions. [2023-12-25 08:01:10,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2023-12-25 08:01:10,415 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 08:01:10,415 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 08:01:10,419 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 [2023-12-25 08:01:10,619 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 [2023-12-25 08:01:10,620 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 08:01:10,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 08:01:10,620 INFO L85 PathProgramCache]: Analyzing trace with hash -65549677, now seen corresponding path program 1 times [2023-12-25 08:01:10,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 08:01:10,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1955302010] [2023-12-25 08:01:10,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 08:01:10,621 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 [2023-12-25 08:01:10,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 08:01:10,622 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) [2023-12-25 08:01:10,645 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 [2023-12-25 08:01:10,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 08:01:10,852 INFO L262 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-25 08:01:10,855 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 08:01:13,451 INFO L134 CoverageAnalysis]: Checked inductivity of 640 backedges. 123 proven. 517 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 08:01:13,451 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 08:01:14,441 INFO L134 CoverageAnalysis]: Checked inductivity of 640 backedges. 123 proven. 517 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 08:01:14,441 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 08:01:14,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1955302010] [2023-12-25 08:01:14,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1955302010] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 08:01:14,442 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 08:01:14,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23] total 46 [2023-12-25 08:01:14,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392937449] [2023-12-25 08:01:14,442 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 08:01:14,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-12-25 08:01:14,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 08:01:14,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-12-25 08:01:14,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=1929, Unknown=0, NotChecked=0, Total=2070 [2023-12-25 08:01:14,443 INFO L87 Difference]: Start difference. First operand 54726 states and 63554 transitions. Second operand has 46 states, 46 states have (on average 11.369565217391305) internal successors, (523), 46 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) [2023-12-25 08:02:26,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 08:02:26,794 INFO L93 Difference]: Finished difference Result 147438 states and 169780 transitions. [2023-12-25 08:02:26,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 208 states. [2023-12-25 08:02:26,795 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 11.369565217391305) internal successors, (523), 46 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) Word has length 275 [2023-12-25 08:02:26,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 08:02:27,034 INFO L225 Difference]: With dead ends: 147438 [2023-12-25 08:02:27,035 INFO L226 Difference]: Without dead ends: 136154 [2023-12-25 08:02:27,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 751 GetRequests, 504 SyntacticMatches, 0 SemanticMatches, 247 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20112 ImplicationChecksByTransitivity, 34.0s TimeCoverageRelationStatistics Valid=6647, Invalid=55105, Unknown=0, NotChecked=0, Total=61752 [2023-12-25 08:02:27,074 INFO L413 NwaCegarLoop]: 498 mSDtfsCounter, 1616 mSDsluCounter, 11536 mSDsCounter, 0 mSdLazyCounter, 16001 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1616 SdHoareTripleChecker+Valid, 12034 SdHoareTripleChecker+Invalid, 16046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 16001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.5s IncrementalHoareTripleChecker+Time [2023-12-25 08:02:27,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1616 Valid, 12034 Invalid, 16046 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [45 Valid, 16001 Invalid, 0 Unknown, 0 Unchecked, 14.5s Time] [2023-12-25 08:02:27,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136154 states. [2023-12-25 08:02:47,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136154 to 108989. [2023-12-25 08:02:47,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108989 states, 108988 states have (on average 1.154319741622931) internal successors, (125807), 108988 states have internal predecessors, (125807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:02:47,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108989 states to 108989 states and 125807 transitions. [2023-12-25 08:02:47,627 INFO L78 Accepts]: Start accepts. Automaton has 108989 states and 125807 transitions. Word has length 275 [2023-12-25 08:02:47,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 08:02:47,627 INFO L495 AbstractCegarLoop]: Abstraction has 108989 states and 125807 transitions. [2023-12-25 08:02:47,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 11.369565217391305) internal successors, (523), 46 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) [2023-12-25 08:02:47,628 INFO L276 IsEmpty]: Start isEmpty. Operand 108989 states and 125807 transitions. [2023-12-25 08:02:47,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2023-12-25 08:02:47,663 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 08:02:47,663 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 08:02:47,668 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 (53)] Forceful destruction successful, exit code 0 [2023-12-25 08:02:47,867 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 [2023-12-25 08:02:47,867 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 08:02:47,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 08:02:47,867 INFO L85 PathProgramCache]: Analyzing trace with hash 661697118, now seen corresponding path program 2 times [2023-12-25 08:02:47,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 08:02:47,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [789085816] [2023-12-25 08:02:47,868 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 08:02:47,868 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 [2023-12-25 08:02:47,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 08:02:47,869 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) [2023-12-25 08:02:47,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2023-12-25 08:02:48,113 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 08:02:48,113 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 08:02:48,122 INFO L262 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 08:02:48,125 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 08:02:48,402 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 21 proven. 571 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-12-25 08:02:48,402 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 08:02:48,759 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 21 proven. 571 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-12-25 08:02:48,759 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 08:02:48,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [789085816] [2023-12-25 08:02:48,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [789085816] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 08:02:48,759 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 08:02:48,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-12-25 08:02:48,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024395548] [2023-12-25 08:02:48,759 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 08:02:48,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-25 08:02:48,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 08:02:48,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-25 08:02:48,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-12-25 08:02:48,760 INFO L87 Difference]: Start difference. First operand 108989 states and 125807 transitions. Second operand has 12 states, 12 states have (on average 38.333333333333336) internal successors, (460), 12 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:03:27,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 08:03:27,323 INFO L93 Difference]: Finished difference Result 279636 states and 322154 transitions. [2023-12-25 08:03:27,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 08:03:27,324 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 38.333333333333336) internal successors, (460), 12 states have internal predecessors, (460), 0 states have call successors, (0), 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 276 [2023-12-25 08:03:27,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 08:03:27,732 INFO L225 Difference]: With dead ends: 279636 [2023-12-25 08:03:27,732 INFO L226 Difference]: Without dead ends: 186036 [2023-12-25 08:03:27,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 550 GetRequests, 540 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-12-25 08:03:27,795 INFO L413 NwaCegarLoop]: 281 mSDtfsCounter, 196 mSDsluCounter, 1146 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 1427 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 08:03:27,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 1427 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 08:03:27,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186036 states. [2023-12-25 08:04:01,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186036 to 179550. [2023-12-25 08:04:01,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179550 states, 179549 states have (on average 1.1404574795738212) internal successors, (204768), 179549 states have internal predecessors, (204768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:04:02,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179550 states to 179550 states and 204768 transitions. [2023-12-25 08:04:02,444 INFO L78 Accepts]: Start accepts. Automaton has 179550 states and 204768 transitions. Word has length 276 [2023-12-25 08:04:02,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 08:04:02,445 INFO L495 AbstractCegarLoop]: Abstraction has 179550 states and 204768 transitions. [2023-12-25 08:04:02,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 38.333333333333336) internal successors, (460), 12 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 08:04:02,445 INFO L276 IsEmpty]: Start isEmpty. Operand 179550 states and 204768 transitions. [2023-12-25 08:04:02,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2023-12-25 08:04:02,482 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 08:04:02,482 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 08:04:02,486 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 [2023-12-25 08:04:02,686 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 [2023-12-25 08:04:02,687 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 08:04:02,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 08:04:02,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1275150126, now seen corresponding path program 1 times [2023-12-25 08:04:02,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 08:04:02,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1740319438] [2023-12-25 08:04:02,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 08:04:02,688 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 [2023-12-25 08:04:02,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 08:04:02,689 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) [2023-12-25 08:04:02,712 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 [2023-12-25 08:04:02,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 08:04:02,912 INFO L262 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-25 08:04:02,915 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 08:04:06,195 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 68 proven. 586 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 08:04:06,208 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 08:04:07,445 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 68 proven. 586 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 08:04:07,446 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 08:04:07,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1740319438] [2023-12-25 08:04:07,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1740319438] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 08:04:07,446 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 08:04:07,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23] total 46 [2023-12-25 08:04:07,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825125194] [2023-12-25 08:04:07,446 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 08:04:07,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-12-25 08:04:07,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 08:04:07,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-12-25 08:04:07,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=1929, Unknown=0, NotChecked=0, Total=2070 [2023-12-25 08:04:07,447 INFO L87 Difference]: Start difference. First operand 179550 states and 204768 transitions. Second operand has 46 states, 46 states have (on average 11.717391304347826) internal successors, (539), 46 states have internal predecessors, (539), 0 states have call successors, (0), 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... [2023-12-25 08:04:44,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2023-12-25 08:04:44,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 653 GetRequests, 506 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5596 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=2231, Invalid=19821, Unknown=0, NotChecked=0, Total=22052 [2023-12-25 08:04:44,047 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 757 mSDsluCounter, 6580 mSDsCounter, 0 mSdLazyCounter, 10767 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 757 SdHoareTripleChecker+Valid, 6850 SdHoareTripleChecker+Invalid, 10787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 10767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2023-12-25 08:04:44,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [757 Valid, 6850 Invalid, 10787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 10767 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2023-12-25 08:04:44,048 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-25 08:04:44,055 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 (55)] Forceful destruction successful, exit code 0 [2023-12-25 08:04:44,068 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 [2023-12-25 08:04:44,068 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 (55)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-25 08:04:44,251 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 [2023-12-25 08:04:44,253 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (179550states) and FLOYD_HOARE automaton (currently 108 states, 46 states before enhancement),while ReachableStatesComputation was computing reachable states (85572 states constructed, input type IntersectNwa). [2023-12-25 08:04:44,256 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 08:04:44,258 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-25 08:04:44,259 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.12 08:04:44 BoogieIcfgContainer [2023-12-25 08:04:44,260 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-25 08:04:44,274 INFO L158 Benchmark]: Toolchain (without parser) took 850433.15ms. Allocated memory was 451.9MB in the beginning and 5.6GB in the end (delta: 5.1GB). Free memory was 398.4MB in the beginning and 2.6GB in the end (delta: -2.2GB). Peak memory consumption was 2.9GB. Max. memory is 8.0GB. [2023-12-25 08:04:44,274 INFO L158 Benchmark]: CDTParser took 0.44ms. Allocated memory is still 255.9MB. Free memory was 206.9MB in the beginning and 206.8MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-25 08:04:44,274 INFO L158 Benchmark]: CACSL2BoogieTranslator took 263.41ms. Allocated memory is still 451.9MB. Free memory was 398.1MB in the beginning and 381.1MB in the end (delta: 17.1MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2023-12-25 08:04:44,274 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.86ms. Allocated memory is still 451.9MB. Free memory was 381.1MB in the beginning and 378.2MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-25 08:04:44,275 INFO L158 Benchmark]: Boogie Preprocessor took 45.10ms. Allocated memory is still 451.9MB. Free memory was 378.2MB in the beginning and 374.8MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-25 08:04:44,275 INFO L158 Benchmark]: RCFGBuilder took 582.97ms. Allocated memory is still 451.9MB. Free memory was 374.8MB in the beginning and 394.2MB in the end (delta: -19.4MB). Peak memory consumption was 15.4MB. Max. memory is 8.0GB. [2023-12-25 08:04:44,275 INFO L158 Benchmark]: TraceAbstraction took 849477.15ms. Allocated memory was 451.9MB in the beginning and 5.6GB in the end (delta: 5.1GB). Free memory was 393.7MB in the beginning and 2.6GB in the end (delta: -2.2GB). Peak memory consumption was 2.9GB. Max. memory is 8.0GB. [2023-12-25 08:04:44,275 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44ms. Allocated memory is still 255.9MB. Free memory was 206.9MB in the beginning and 206.8MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 263.41ms. Allocated memory is still 451.9MB. Free memory was 398.1MB in the beginning and 381.1MB in the end (delta: 17.1MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 43.86ms. Allocated memory is still 451.9MB. Free memory was 381.1MB in the beginning and 378.2MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 45.10ms. Allocated memory is still 451.9MB. Free memory was 378.2MB in the beginning and 374.8MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 582.97ms. Allocated memory is still 451.9MB. Free memory was 374.8MB in the beginning and 394.2MB in the end (delta: -19.4MB). Peak memory consumption was 15.4MB. Max. memory is 8.0GB. * TraceAbstraction took 849477.15ms. Allocated memory was 451.9MB in the beginning and 5.6GB in the end (delta: 5.1GB). Free memory was 393.7MB in the beginning and 2.6GB in the end (delta: -2.2GB). Peak memory consumption was 2.9GB. 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: 504]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 504). Cancelled while NwaCegarLoop was constructing difference of abstraction (179550states) and FLOYD_HOARE automaton (currently 108 states, 46 states before enhancement),while ReachableStatesComputation was computing reachable states (85572 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 93 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 849.4s, OverallIterations: 54, TraceHistogramMax: 8, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.5s, AutomataDifference: 568.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 36280 SdHoareTripleChecker+Valid, 125.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 36280 mSDsluCounter, 137319 SdHoareTripleChecker+Invalid, 114.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 126256 mSDsCounter, 652 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 155211 IncrementalHoareTripleChecker+Invalid, 155863 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 652 mSolverCounterUnsat, 11063 mSDtfsCounter, 155211 mSolverCounterSat, 0.8s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 15724 GetRequests, 12762 SyntacticMatches, 0 SemanticMatches, 2962 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130952 ImplicationChecksByTransitivity, 224.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=179550occurred in iteration=53, InterpolantAutomatonStates: 2214, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 189.1s AutomataMinimizationTime, 53 MinimizatonAttempts, 505302 StatesRemovedByMinimization, 51 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.2s SsaConstructionTime, 3.3s SatisfiabilityAnalysisTime, 74.5s InterpolantComputationTime, 8131 NumberOfCodeBlocks, 7257 NumberOfCodeBlocksAsserted, 56 NumberOfCheckSat, 13651 ConstructedInterpolants, 4355 QuantifiedInterpolants, 211142 SizeOfPredicates, 332 NumberOfNonLiveVariables, 15368 ConjunctsInSsa, 558 ConjunctsInUnsatCore, 85 InterpolantComputations, 23 PerfectInterpolantSequences, 5352/18422 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