/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/loop-invgen/seq-3.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 22:46:06,044 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 22:46:06,090 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-24 22:46:06,093 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 22:46:06,093 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 22:46:06,127 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 22:46:06,128 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 22:46:06,128 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 22:46:06,129 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 22:46:06,131 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 22:46:06,131 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 22:46:06,132 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 22:46:06,132 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 22:46:06,133 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 22:46:06,133 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 22:46:06,134 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 22:46:06,134 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 22:46:06,134 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 22:46:06,134 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 22:46:06,135 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 22:46:06,135 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 22:46:06,135 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 22:46:06,135 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 22:46:06,136 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 22:46:06,136 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 22:46:06,136 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 22:46:06,136 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 22:46:06,136 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 22:46:06,136 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 22:46:06,136 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 22:46:06,137 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 22:46:06,137 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 22:46:06,137 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 22:46:06,137 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 22:46:06,137 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 22:46:06,138 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 22:46:06,138 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 22:46:06,138 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 22:46:06,138 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 22:46:06,138 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 22:46:06,138 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 22:46:06,138 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 22:46:06,138 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 22:46:06,138 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 22:46:06,139 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 22:46:06,139 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 22:46:06,139 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 22:46:06,276 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 22:46:06,294 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 22:46:06,296 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 22:46:06,297 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 22:46:06,297 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 22:46:06,298 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/seq-3.i [2023-12-24 22:46:07,293 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 22:46:07,426 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 22:46:07,426 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/seq-3.i [2023-12-24 22:46:07,430 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eeec02867/08f4b1030d9e4542a33e0123c0b9ce66/FLAGd683e1693 [2023-12-24 22:46:07,443 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eeec02867/08f4b1030d9e4542a33e0123c0b9ce66 [2023-12-24 22:46:07,444 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 22:46:07,445 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 22:46:07,446 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 22:46:07,446 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 22:46:07,452 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 22:46:07,452 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 10:46:07" (1/1) ... [2023-12-24 22:46:07,453 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b301a66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:46:07, skipping insertion in model container [2023-12-24 22:46:07,453 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 10:46:07" (1/1) ... [2023-12-24 22:46:07,470 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 22:46:07,579 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/seq-3.i[893,906] [2023-12-24 22:46:07,590 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 22:46:07,598 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 22:46:07,607 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/seq-3.i[893,906] [2023-12-24 22:46:07,611 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 22:46:07,620 INFO L206 MainTranslator]: Completed translation [2023-12-24 22:46:07,620 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:46:07 WrapperNode [2023-12-24 22:46:07,620 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 22:46:07,621 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 22:46:07,621 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 22:46:07,621 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 22:46:07,625 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:46:07" (1/1) ... [2023-12-24 22:46:07,629 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:46:07" (1/1) ... [2023-12-24 22:46:07,640 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 63 [2023-12-24 22:46:07,640 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 22:46:07,640 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 22:46:07,640 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 22:46:07,641 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 22:46:07,647 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:46:07" (1/1) ... [2023-12-24 22:46:07,647 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:46:07" (1/1) ... [2023-12-24 22:46:07,648 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:46:07" (1/1) ... [2023-12-24 22:46:07,655 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]. [2023-12-24 22:46:07,655 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:46:07" (1/1) ... [2023-12-24 22:46:07,655 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:46:07" (1/1) ... [2023-12-24 22:46:07,658 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:46:07" (1/1) ... [2023-12-24 22:46:07,660 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:46:07" (1/1) ... [2023-12-24 22:46:07,661 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:46:07" (1/1) ... [2023-12-24 22:46:07,661 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:46:07" (1/1) ... [2023-12-24 22:46:07,662 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 22:46:07,663 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 22:46:07,663 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 22:46:07,663 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 22:46:07,664 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:46:07" (1/1) ... [2023-12-24 22:46:07,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 22:46:07,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 22:46:07,689 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) [2023-12-24 22:46:07,692 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 [2023-12-24 22:46:07,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 22:46:07,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 22:46:07,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 22:46:07,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 22:46:07,747 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 22:46:07,749 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 22:46:07,853 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 22:46:07,872 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 22:46:07,872 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-12-24 22:46:07,872 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 10:46:07 BoogieIcfgContainer [2023-12-24 22:46:07,872 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 22:46:07,874 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 22:46:07,874 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 22:46:07,876 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 22:46:07,876 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 10:46:07" (1/3) ... [2023-12-24 22:46:07,876 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dc3a53d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 10:46:07, skipping insertion in model container [2023-12-24 22:46:07,877 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 10:46:07" (2/3) ... [2023-12-24 22:46:07,877 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dc3a53d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 10:46:07, skipping insertion in model container [2023-12-24 22:46:07,877 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 10:46:07" (3/3) ... [2023-12-24 22:46:07,877 INFO L112 eAbstractionObserver]: Analyzing ICFG seq-3.i [2023-12-24 22:46:07,888 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 22:46:07,888 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 22:46:07,917 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 22:46:07,921 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;@5b0a3232, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 22:46:07,921 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 22:46:07,923 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 13 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) [2023-12-24 22:46:07,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-24 22:46:07,927 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:46:07,927 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:46:07,927 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:46:07,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:46:07,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1388144575, now seen corresponding path program 1 times [2023-12-24 22:46:07,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:46:07,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1923034538] [2023-12-24 22:46:07,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 22:46:07,938 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 [2023-12-24 22:46:07,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:46:07,948 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) [2023-12-24 22:46:07,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-24 22:46:07,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 22:46:07,999 INFO L262 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-24 22:46:08,002 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:46:08,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:46:08,247 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 22:46:08,248 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:46:08,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1923034538] [2023-12-24 22:46:08,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1923034538] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 22:46:08,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 22:46:08,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-24 22:46:08,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914826775] [2023-12-24 22:46:08,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 22:46:08,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 22:46:08,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:46:08,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 22:46:08,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-24 22:46:08,283 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 13 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) Second operand has 9 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:46:08,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:46:08,504 INFO L93 Difference]: Finished difference Result 40 states and 63 transitions. [2023-12-24 22:46:08,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 22:46:08,506 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2023-12-24 22:46:08,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:46:08,511 INFO L225 Difference]: With dead ends: 40 [2023-12-24 22:46:08,511 INFO L226 Difference]: Without dead ends: 22 [2023-12-24 22:46:08,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2023-12-24 22:46:08,517 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 32 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 22:46:08,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 51 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 22:46:08,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-12-24 22:46:08,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 15. [2023-12-24 22:46:08,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:46:08,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2023-12-24 22:46:08,543 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 10 [2023-12-24 22:46:08,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:46:08,543 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2023-12-24 22:46:08,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:46:08,544 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2023-12-24 22:46:08,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-24 22:46:08,544 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:46:08,544 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:46:08,549 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-24 22:46:08,746 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 [2023-12-24 22:46:08,747 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:46:08,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:46:08,747 INFO L85 PathProgramCache]: Analyzing trace with hash -31362701, now seen corresponding path program 1 times [2023-12-24 22:46:08,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:46:08,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [769713383] [2023-12-24 22:46:08,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 22:46:08,748 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:46:08,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:46:08,749 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) [2023-12-24 22:46:08,758 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 [2023-12-24 22:46:08,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 22:46:08,778 INFO L262 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 22:46:08,779 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:46:08,810 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:46:08,810 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:46:08,850 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:46:08,851 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:46:08,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [769713383] [2023-12-24 22:46:08,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [769713383] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:46:08,851 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:46:08,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-12-24 22:46:08,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758590115] [2023-12-24 22:46:08,851 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:46:08,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 22:46:08,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:46:08,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 22:46:08,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-24 22:46:08,853 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:46:08,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:46:08,974 INFO L93 Difference]: Finished difference Result 48 states and 59 transitions. [2023-12-24 22:46:08,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-24 22:46:08,974 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-12-24 22:46:08,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:46:08,976 INFO L225 Difference]: With dead ends: 48 [2023-12-24 22:46:08,976 INFO L226 Difference]: Without dead ends: 46 [2023-12-24 22:46:08,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2023-12-24 22:46:08,977 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 32 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 22:46:08,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 54 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 22:46:08,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2023-12-24 22:46:08,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 27. [2023-12-24 22:46:08,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 26 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:46:08,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2023-12-24 22:46:08,982 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 36 transitions. Word has length 11 [2023-12-24 22:46:08,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:46:08,983 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 36 transitions. [2023-12-24 22:46:08,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:46:08,983 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 36 transitions. [2023-12-24 22:46:08,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-24 22:46:08,984 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:46:08,984 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:46:09,000 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-12-24 22:46:09,185 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 [2023-12-24 22:46:09,186 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:46:09,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:46:09,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1981488157, now seen corresponding path program 1 times [2023-12-24 22:46:09,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:46:09,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [130172445] [2023-12-24 22:46:09,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 22:46:09,188 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 [2023-12-24 22:46:09,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:46:09,189 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) [2023-12-24 22:46:09,189 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 [2023-12-24 22:46:09,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 22:46:09,212 INFO L262 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-24 22:46:09,213 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:46:09,430 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:46:09,430 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:46:09,869 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:46:09,870 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:46:09,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [130172445] [2023-12-24 22:46:09,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [130172445] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:46:09,870 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:46:09,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2023-12-24 22:46:09,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847486020] [2023-12-24 22:46:09,870 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:46:09,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-24 22:46:09,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:46:09,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-24 22:46:09,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=347, Unknown=0, NotChecked=0, Total=462 [2023-12-24 22:46:09,871 INFO L87 Difference]: Start difference. First operand 27 states and 36 transitions. Second operand has 22 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 21 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:46:10,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:46:10,209 INFO L93 Difference]: Finished difference Result 50 states and 63 transitions. [2023-12-24 22:46:10,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-24 22:46:10,210 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 21 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-12-24 22:46:10,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:46:10,211 INFO L225 Difference]: With dead ends: 50 [2023-12-24 22:46:10,211 INFO L226 Difference]: Without dead ends: 40 [2023-12-24 22:46:10,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=251, Invalid=619, Unknown=0, NotChecked=0, Total=870 [2023-12-24 22:46:10,212 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 73 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 22:46:10,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 61 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 22:46:10,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-12-24 22:46:10,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 28. [2023-12-24 22:46:10,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.3703703703703705) internal successors, (37), 27 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:46:10,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 37 transitions. [2023-12-24 22:46:10,217 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 37 transitions. Word has length 14 [2023-12-24 22:46:10,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:46:10,217 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 37 transitions. [2023-12-24 22:46:10,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 21 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:46:10,217 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 37 transitions. [2023-12-24 22:46:10,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-24 22:46:10,217 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:46:10,217 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:46:10,221 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 (4)] Ended with exit code 0 [2023-12-24 22:46:10,419 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 [2023-12-24 22:46:10,420 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:46:10,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:46:10,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1523078337, now seen corresponding path program 2 times [2023-12-24 22:46:10,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:46:10,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [11381656] [2023-12-24 22:46:10,421 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-24 22:46:10,421 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 [2023-12-24 22:46:10,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:46:10,423 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) [2023-12-24 22:46:10,424 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 [2023-12-24 22:46:10,444 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-24 22:46:10,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:46:10,445 INFO L262 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 22:46:10,446 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:46:10,493 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:46:10,494 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:46:10,583 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:46:10,584 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:46:10,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [11381656] [2023-12-24 22:46:10,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [11381656] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:46:10,584 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:46:10,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-12-24 22:46:10,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134005303] [2023-12-24 22:46:10,584 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:46:10,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-24 22:46:10,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:46:10,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-24 22:46:10,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-12-24 22:46:10,585 INFO L87 Difference]: Start difference. First operand 28 states and 37 transitions. Second operand has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:46:11,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:46:11,479 INFO L93 Difference]: Finished difference Result 142 states and 171 transitions. [2023-12-24 22:46:11,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-12-24 22:46:11,480 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-12-24 22:46:11,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:46:11,480 INFO L225 Difference]: With dead ends: 142 [2023-12-24 22:46:11,481 INFO L226 Difference]: Without dead ends: 140 [2023-12-24 22:46:11,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=510, Invalid=1382, Unknown=0, NotChecked=0, Total=1892 [2023-12-24 22:46:11,482 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 269 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 22:46:11,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 175 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 22:46:11,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2023-12-24 22:46:11,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 58. [2023-12-24 22:46:11,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.3859649122807018) internal successors, (79), 57 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:46:11,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 79 transitions. [2023-12-24 22:46:11,495 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 79 transitions. Word has length 14 [2023-12-24 22:46:11,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:46:11,495 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 79 transitions. [2023-12-24 22:46:11,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:46:11,496 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 79 transitions. [2023-12-24 22:46:11,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-24 22:46:11,499 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:46:11,499 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:46:11,502 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 [2023-12-24 22:46:11,702 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 [2023-12-24 22:46:11,702 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:46:11,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:46:11,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1346112548, now seen corresponding path program 1 times [2023-12-24 22:46:11,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:46:11,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1815047012] [2023-12-24 22:46:11,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 22:46:11,703 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 [2023-12-24 22:46:11,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:46:11,704 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) [2023-12-24 22:46:11,705 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 [2023-12-24 22:46:11,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 22:46:11,725 INFO L262 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-24 22:46:11,726 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:46:11,906 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:46:11,906 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:46:12,472 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:46:12,473 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:46:12,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1815047012] [2023-12-24 22:46:12,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1815047012] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:46:12,473 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:46:12,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2023-12-24 22:46:12,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229596448] [2023-12-24 22:46:12,473 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:46:12,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-24 22:46:12,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:46:12,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-24 22:46:12,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=350, Unknown=0, NotChecked=0, Total=462 [2023-12-24 22:46:12,474 INFO L87 Difference]: Start difference. First operand 58 states and 79 transitions. Second operand has 22 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 21 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:46:12,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:46:12,744 INFO L93 Difference]: Finished difference Result 128 states and 167 transitions. [2023-12-24 22:46:12,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-24 22:46:12,749 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 21 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-12-24 22:46:12,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:46:12,749 INFO L225 Difference]: With dead ends: 128 [2023-12-24 22:46:12,749 INFO L226 Difference]: Without dead ends: 118 [2023-12-24 22:46:12,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=202, Invalid=554, Unknown=0, NotChecked=0, Total=756 [2023-12-24 22:46:12,750 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 59 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 22:46:12,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 81 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 22:46:12,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2023-12-24 22:46:12,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 57. [2023-12-24 22:46:12,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.375) internal successors, (77), 56 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:46:12,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 77 transitions. [2023-12-24 22:46:12,760 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 77 transitions. Word has length 14 [2023-12-24 22:46:12,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:46:12,760 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 77 transitions. [2023-12-24 22:46:12,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 21 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:46:12,760 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 77 transitions. [2023-12-24 22:46:12,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-24 22:46:12,760 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:46:12,761 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:46:12,765 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 [2023-12-24 22:46:12,961 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 [2023-12-24 22:46:12,961 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:46:12,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:46:12,962 INFO L85 PathProgramCache]: Analyzing trace with hash -545504319, now seen corresponding path program 2 times [2023-12-24 22:46:12,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:46:12,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [934025387] [2023-12-24 22:46:12,962 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-24 22:46:12,962 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 [2023-12-24 22:46:12,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:46:12,963 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) [2023-12-24 22:46:12,964 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 [2023-12-24 22:46:12,988 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-24 22:46:12,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:46:12,989 INFO L262 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-24 22:46:12,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:46:13,257 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:46:13,258 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:46:13,818 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:46:13,818 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:46:13,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [934025387] [2023-12-24 22:46:13,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [934025387] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:46:13,819 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:46:13,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-24 22:46:13,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917978641] [2023-12-24 22:46:13,819 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:46:13,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-24 22:46:13,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:46:13,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-24 22:46:13,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=502, Unknown=0, NotChecked=0, Total=650 [2023-12-24 22:46:13,820 INFO L87 Difference]: Start difference. First operand 57 states and 77 transitions. Second operand has 26 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 25 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:46:14,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:46:14,317 INFO L93 Difference]: Finished difference Result 100 states and 129 transitions. [2023-12-24 22:46:14,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-24 22:46:14,317 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 25 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-12-24 22:46:14,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:46:14,318 INFO L225 Difference]: With dead ends: 100 [2023-12-24 22:46:14,318 INFO L226 Difference]: Without dead ends: 87 [2023-12-24 22:46:14,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=347, Invalid=985, Unknown=0, NotChecked=0, Total=1332 [2023-12-24 22:46:14,319 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 69 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 22:46:14,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 84 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 22:46:14,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-12-24 22:46:14,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 59. [2023-12-24 22:46:14,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.3620689655172413) internal successors, (79), 58 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:46:14,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 79 transitions. [2023-12-24 22:46:14,327 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 79 transitions. Word has length 18 [2023-12-24 22:46:14,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:46:14,327 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 79 transitions. [2023-12-24 22:46:14,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 25 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:46:14,327 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 79 transitions. [2023-12-24 22:46:14,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-24 22:46:14,328 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:46:14,328 INFO L195 NwaCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:46:14,333 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 (7)] Ended with exit code 0 [2023-12-24 22:46:14,530 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 [2023-12-24 22:46:14,530 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:46:14,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:46:14,531 INFO L85 PathProgramCache]: Analyzing trace with hash 963549341, now seen corresponding path program 3 times [2023-12-24 22:46:14,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:46:14,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [330937263] [2023-12-24 22:46:14,531 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-24 22:46:14,531 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 [2023-12-24 22:46:14,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:46:14,532 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) [2023-12-24 22:46:14,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-24 22:46:14,558 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-24 22:46:14,558 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:46:14,559 INFO L262 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-24 22:46:14,560 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:46:14,626 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:46:14,626 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:46:14,893 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:46:14,893 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:46:14,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [330937263] [2023-12-24 22:46:14,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [330937263] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:46:14,894 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:46:14,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 19 [2023-12-24 22:46:14,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115569232] [2023-12-24 22:46:14,894 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:46:14,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-24 22:46:14,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:46:14,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-24 22:46:14,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2023-12-24 22:46:14,895 INFO L87 Difference]: Start difference. First operand 59 states and 79 transitions. Second operand has 20 states, 20 states have (on average 1.75) internal successors, (35), 19 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:46:16,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:46:16,346 INFO L93 Difference]: Finished difference Result 152 states and 185 transitions. [2023-12-24 22:46:16,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-12-24 22:46:16,347 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.75) internal successors, (35), 19 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-12-24 22:46:16,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:46:16,348 INFO L225 Difference]: With dead ends: 152 [2023-12-24 22:46:16,348 INFO L226 Difference]: Without dead ends: 147 [2023-12-24 22:46:16,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 641 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=716, Invalid=1834, Unknown=0, NotChecked=0, Total=2550 [2023-12-24 22:46:16,349 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 283 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 22:46:16,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 233 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 22:46:16,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2023-12-24 22:46:16,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 86. [2023-12-24 22:46:16,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.3529411764705883) internal successors, (115), 85 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:46:16,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 115 transitions. [2023-12-24 22:46:16,362 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 115 transitions. Word has length 18 [2023-12-24 22:46:16,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:46:16,362 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 115 transitions. [2023-12-24 22:46:16,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.75) internal successors, (35), 19 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:46:16,362 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 115 transitions. [2023-12-24 22:46:16,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-24 22:46:16,363 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:46:16,363 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:46:16,371 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 [2023-12-24 22:46:16,565 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 [2023-12-24 22:46:16,565 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:46:16,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:46:16,566 INFO L85 PathProgramCache]: Analyzing trace with hash -446356480, now seen corresponding path program 1 times [2023-12-24 22:46:16,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:46:16,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [235336886] [2023-12-24 22:46:16,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 22:46:16,566 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 [2023-12-24 22:46:16,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:46:16,567 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) [2023-12-24 22:46:16,568 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 [2023-12-24 22:46:16,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 22:46:16,594 INFO L262 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-24 22:46:16,595 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:46:16,803 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:46:16,803 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:46:17,302 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:46:17,303 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:46:17,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [235336886] [2023-12-24 22:46:17,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [235336886] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:46:17,303 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:46:17,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2023-12-24 22:46:17,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223375363] [2023-12-24 22:46:17,303 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:46:17,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-24 22:46:17,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:46:17,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-24 22:46:17,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=425, Unknown=0, NotChecked=0, Total=552 [2023-12-24 22:46:17,307 INFO L87 Difference]: Start difference. First operand 86 states and 115 transitions. Second operand has 24 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:46:17,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:46:17,876 INFO L93 Difference]: Finished difference Result 192 states and 247 transitions. [2023-12-24 22:46:17,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-24 22:46:17,877 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-12-24 22:46:17,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:46:17,877 INFO L225 Difference]: With dead ends: 192 [2023-12-24 22:46:17,877 INFO L226 Difference]: Without dead ends: 181 [2023-12-24 22:46:17,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=296, Invalid=964, Unknown=0, NotChecked=0, Total=1260 [2023-12-24 22:46:17,878 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 115 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 22:46:17,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 145 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 22:46:17,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2023-12-24 22:46:17,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 85. [2023-12-24 22:46:17,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.3571428571428572) internal successors, (114), 84 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:46:17,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 114 transitions. [2023-12-24 22:46:17,892 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 114 transitions. Word has length 18 [2023-12-24 22:46:17,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:46:17,892 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 114 transitions. [2023-12-24 22:46:17,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:46:17,892 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 114 transitions. [2023-12-24 22:46:17,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-24 22:46:17,893 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:46:17,893 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:46:17,899 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 [2023-12-24 22:46:18,099 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 [2023-12-24 22:46:18,100 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:46:18,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:46:18,100 INFO L85 PathProgramCache]: Analyzing trace with hash -858800159, now seen corresponding path program 2 times [2023-12-24 22:46:18,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:46:18,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1566002545] [2023-12-24 22:46:18,100 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-24 22:46:18,100 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 [2023-12-24 22:46:18,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:46:18,101 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) [2023-12-24 22:46:18,103 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 (10)] Waiting until timeout for monitored process [2023-12-24 22:46:18,124 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-24 22:46:18,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:46:18,125 INFO L262 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-24 22:46:18,129 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:46:18,369 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:46:18,370 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:46:19,046 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:46:19,046 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:46:19,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1566002545] [2023-12-24 22:46:19,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1566002545] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:46:19,046 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:46:19,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-24 22:46:19,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104576324] [2023-12-24 22:46:19,046 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:46:19,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-24 22:46:19,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:46:19,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-24 22:46:19,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=504, Unknown=0, NotChecked=0, Total=650 [2023-12-24 22:46:19,047 INFO L87 Difference]: Start difference. First operand 85 states and 114 transitions. Second operand has 26 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 25 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:46:19,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:46:19,641 INFO L93 Difference]: Finished difference Result 238 states and 305 transitions. [2023-12-24 22:46:19,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-24 22:46:19,641 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 25 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-12-24 22:46:19,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:46:19,642 INFO L225 Difference]: With dead ends: 238 [2023-12-24 22:46:19,642 INFO L226 Difference]: Without dead ends: 227 [2023-12-24 22:46:19,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=305, Invalid=955, Unknown=0, NotChecked=0, Total=1260 [2023-12-24 22:46:19,643 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 112 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 22:46:19,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 158 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 22:46:19,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2023-12-24 22:46:19,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 83. [2023-12-24 22:46:19,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.353658536585366) internal successors, (111), 82 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) [2023-12-24 22:46:19,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 111 transitions. [2023-12-24 22:46:19,658 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 111 transitions. Word has length 18 [2023-12-24 22:46:19,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:46:19,658 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 111 transitions. [2023-12-24 22:46:19,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 25 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:46:19,658 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 111 transitions. [2023-12-24 22:46:19,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-24 22:46:19,659 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:46:19,659 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:46:19,661 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-24 22:46:19,861 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 [2023-12-24 22:46:19,861 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:46:19,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:46:19,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1754052481, now seen corresponding path program 3 times [2023-12-24 22:46:19,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:46:19,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [576359888] [2023-12-24 22:46:19,861 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-24 22:46:19,861 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 [2023-12-24 22:46:19,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:46:19,862 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) [2023-12-24 22:46:19,865 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 [2023-12-24 22:46:19,894 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-12-24 22:46:19,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:46:19,896 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-24 22:46:19,897 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:46:19,978 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:46:19,978 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:46:20,235 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:46:20,235 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:46:20,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [576359888] [2023-12-24 22:46:20,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [576359888] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:46:20,235 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:46:20,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-24 22:46:20,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538869479] [2023-12-24 22:46:20,236 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:46:20,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-24 22:46:20,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:46:20,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-24 22:46:20,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2023-12-24 22:46:20,236 INFO L87 Difference]: Start difference. First operand 83 states and 111 transitions. Second operand has 26 states, 26 states have (on average 1.5) internal successors, (39), 25 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:46:28,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:46:28,976 INFO L93 Difference]: Finished difference Result 475 states and 537 transitions. [2023-12-24 22:46:28,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2023-12-24 22:46:28,977 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.5) internal successors, (39), 25 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-12-24 22:46:28,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:46:28,978 INFO L225 Difference]: With dead ends: 475 [2023-12-24 22:46:28,978 INFO L226 Difference]: Without dead ends: 473 [2023-12-24 22:46:28,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9771 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=5439, Invalid=19367, Unknown=0, NotChecked=0, Total=24806 [2023-12-24 22:46:28,984 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 1423 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 717 mSolverCounterSat, 441 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1423 SdHoareTripleChecker+Valid, 610 SdHoareTripleChecker+Invalid, 1158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 441 IncrementalHoareTripleChecker+Valid, 717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-24 22:46:28,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1423 Valid, 610 Invalid, 1158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [441 Valid, 717 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-24 22:46:28,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2023-12-24 22:46:29,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 134. [2023-12-24 22:46:29,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 133 states have (on average 1.330827067669173) internal successors, (177), 133 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:46:29,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 177 transitions. [2023-12-24 22:46:29,027 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 177 transitions. Word has length 20 [2023-12-24 22:46:29,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:46:29,027 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 177 transitions. [2023-12-24 22:46:29,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.5) internal successors, (39), 25 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:46:29,027 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 177 transitions. [2023-12-24 22:46:29,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-24 22:46:29,028 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:46:29,028 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:46:29,030 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 (11)] Ended with exit code 0 [2023-12-24 22:46:29,230 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 [2023-12-24 22:46:29,230 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:46:29,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:46:29,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1817989789, now seen corresponding path program 4 times [2023-12-24 22:46:29,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:46:29,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1495436611] [2023-12-24 22:46:29,231 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-24 22:46:29,231 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 [2023-12-24 22:46:29,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:46:29,232 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) [2023-12-24 22:46:29,233 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 [2023-12-24 22:46:29,259 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-24 22:46:29,260 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:46:29,261 INFO L262 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-24 22:46:29,262 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:46:29,631 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:46:29,632 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:46:30,800 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:46:30,801 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:46:30,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1495436611] [2023-12-24 22:46:30,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1495436611] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:46:30,801 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:46:30,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 33 [2023-12-24 22:46:30,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434402075] [2023-12-24 22:46:30,801 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:46:30,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-24 22:46:30,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:46:30,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-24 22:46:30,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=879, Unknown=0, NotChecked=0, Total=1122 [2023-12-24 22:46:30,802 INFO L87 Difference]: Start difference. First operand 134 states and 177 transitions. Second operand has 34 states, 34 states have (on average 1.2352941176470589) internal successors, (42), 33 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:46:31,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:46:31,602 INFO L93 Difference]: Finished difference Result 231 states and 293 transitions. [2023-12-24 22:46:31,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-24 22:46:31,602 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.2352941176470589) internal successors, (42), 33 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-12-24 22:46:31,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:46:31,603 INFO L225 Difference]: With dead ends: 231 [2023-12-24 22:46:31,603 INFO L226 Difference]: Without dead ends: 217 [2023-12-24 22:46:31,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 570 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=559, Invalid=1793, Unknown=0, NotChecked=0, Total=2352 [2023-12-24 22:46:31,604 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 51 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 22:46:31,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 101 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 22:46:31,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2023-12-24 22:46:31,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 137. [2023-12-24 22:46:31,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 136 states have (on average 1.3235294117647058) internal successors, (180), 136 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:46:31,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 180 transitions. [2023-12-24 22:46:31,632 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 180 transitions. Word has length 22 [2023-12-24 22:46:31,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:46:31,632 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 180 transitions. [2023-12-24 22:46:31,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.2352941176470589) internal successors, (42), 33 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:46:31,632 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 180 transitions. [2023-12-24 22:46:31,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-24 22:46:31,633 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:46:31,633 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:46:31,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-24 22:46:31,835 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 [2023-12-24 22:46:31,835 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:46:31,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:46:31,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1773339812, now seen corresponding path program 2 times [2023-12-24 22:46:31,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:46:31,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [738214560] [2023-12-24 22:46:31,836 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-24 22:46:31,836 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 [2023-12-24 22:46:31,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:46:31,837 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) [2023-12-24 22:46:31,838 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 [2023-12-24 22:46:31,871 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-24 22:46:31,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:46:31,873 INFO L262 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-24 22:46:31,873 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:46:32,138 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:46:32,138 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:46:32,826 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:46:32,827 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:46:32,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [738214560] [2023-12-24 22:46:32,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [738214560] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:46:32,827 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:46:32,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2023-12-24 22:46:32,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870766251] [2023-12-24 22:46:32,827 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:46:32,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-24 22:46:32,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:46:32,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-24 22:46:32,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=594, Unknown=0, NotChecked=0, Total=756 [2023-12-24 22:46:32,828 INFO L87 Difference]: Start difference. First operand 137 states and 180 transitions. Second operand has 28 states, 28 states have (on average 1.5) internal successors, (42), 27 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:46:33,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:46:33,846 INFO L93 Difference]: Finished difference Result 313 states and 394 transitions. [2023-12-24 22:46:33,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-24 22:46:33,846 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.5) internal successors, (42), 27 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-12-24 22:46:33,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:46:33,847 INFO L225 Difference]: With dead ends: 313 [2023-12-24 22:46:33,847 INFO L226 Difference]: Without dead ends: 299 [2023-12-24 22:46:33,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=402, Invalid=1490, Unknown=0, NotChecked=0, Total=1892 [2023-12-24 22:46:33,849 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 111 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 22:46:33,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 193 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 22:46:33,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2023-12-24 22:46:33,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 136. [2023-12-24 22:46:33,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 1.325925925925926) internal successors, (179), 135 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:46:33,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 179 transitions. [2023-12-24 22:46:33,875 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 179 transitions. Word has length 22 [2023-12-24 22:46:33,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:46:33,875 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 179 transitions. [2023-12-24 22:46:33,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.5) internal successors, (42), 27 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:46:33,875 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 179 transitions. [2023-12-24 22:46:33,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-24 22:46:33,876 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:46:33,876 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:46:33,879 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 [2023-12-24 22:46:34,078 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 [2023-12-24 22:46:34,078 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:46:34,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:46:34,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1297399485, now seen corresponding path program 3 times [2023-12-24 22:46:34,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:46:34,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1644537540] [2023-12-24 22:46:34,079 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-24 22:46:34,079 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 [2023-12-24 22:46:34,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:46:34,080 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) [2023-12-24 22:46:34,081 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 [2023-12-24 22:46:34,111 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-24 22:46:34,111 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:46:34,112 INFO L262 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-24 22:46:34,113 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:46:34,441 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:46:34,441 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:46:35,142 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:46:35,143 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:46:35,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1644537540] [2023-12-24 22:46:35,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1644537540] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:46:35,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:46:35,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2023-12-24 22:46:35,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98940218] [2023-12-24 22:46:35,143 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:46:35,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-24 22:46:35,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:46:35,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-24 22:46:35,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=593, Unknown=0, NotChecked=0, Total=756 [2023-12-24 22:46:35,144 INFO L87 Difference]: Start difference. First operand 136 states and 179 transitions. Second operand has 28 states, 28 states have (on average 1.5) internal successors, (42), 27 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:46:36,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:46:36,319 INFO L93 Difference]: Finished difference Result 394 states and 494 transitions. [2023-12-24 22:46:36,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-24 22:46:36,319 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.5) internal successors, (42), 27 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-12-24 22:46:36,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:46:36,320 INFO L225 Difference]: With dead ends: 394 [2023-12-24 22:46:36,320 INFO L226 Difference]: Without dead ends: 380 [2023-12-24 22:46:36,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=430, Invalid=1550, Unknown=0, NotChecked=0, Total=1980 [2023-12-24 22:46:36,321 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 133 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 22:46:36,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 235 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 22:46:36,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2023-12-24 22:46:36,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 135. [2023-12-24 22:46:36,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 134 states have (on average 1.328358208955224) internal successors, (178), 134 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) [2023-12-24 22:46:36,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 178 transitions. [2023-12-24 22:46:36,351 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 178 transitions. Word has length 22 [2023-12-24 22:46:36,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:46:36,351 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 178 transitions. [2023-12-24 22:46:36,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.5) internal successors, (42), 27 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:46:36,351 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 178 transitions. [2023-12-24 22:46:36,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-24 22:46:36,352 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:46:36,352 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:46:36,355 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 [2023-12-24 22:46:36,555 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 [2023-12-24 22:46:36,555 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:46:36,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:46:36,556 INFO L85 PathProgramCache]: Analyzing trace with hash 2089192252, now seen corresponding path program 3 times [2023-12-24 22:46:36,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:46:36,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1362018491] [2023-12-24 22:46:36,556 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-24 22:46:36,556 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 [2023-12-24 22:46:36,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:46:36,557 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) [2023-12-24 22:46:36,558 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 [2023-12-24 22:46:36,589 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-24 22:46:36,589 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:46:36,590 INFO L262 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-24 22:46:36,591 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:46:36,930 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:46:36,930 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:46:37,919 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:46:37,919 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:46:37,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1362018491] [2023-12-24 22:46:37,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1362018491] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:46:37,919 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:46:37,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 29 [2023-12-24 22:46:37,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939392878] [2023-12-24 22:46:37,919 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:46:37,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-24 22:46:37,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:46:37,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-24 22:46:37,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=686, Unknown=0, NotChecked=0, Total=870 [2023-12-24 22:46:37,920 INFO L87 Difference]: Start difference. First operand 135 states and 178 transitions. Second operand has 30 states, 30 states have (on average 1.4) internal successors, (42), 29 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:46:39,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:46:39,069 INFO L93 Difference]: Finished difference Result 473 states and 591 transitions. [2023-12-24 22:46:39,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-24 22:46:39,069 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.4) internal successors, (42), 29 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-12-24 22:46:39,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:46:39,071 INFO L225 Difference]: With dead ends: 473 [2023-12-24 22:46:39,071 INFO L226 Difference]: Without dead ends: 459 [2023-12-24 22:46:39,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 388 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=399, Invalid=1407, Unknown=0, NotChecked=0, Total=1806 [2023-12-24 22:46:39,072 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 175 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 22:46:39,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 336 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 22:46:39,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2023-12-24 22:46:39,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 133. [2023-12-24 22:46:39,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.3257575757575757) internal successors, (175), 132 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:46:39,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 175 transitions. [2023-12-24 22:46:39,106 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 175 transitions. Word has length 22 [2023-12-24 22:46:39,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:46:39,106 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 175 transitions. [2023-12-24 22:46:39,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.4) internal successors, (42), 29 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:46:39,106 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 175 transitions. [2023-12-24 22:46:39,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-24 22:46:39,107 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:46:39,107 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:46:39,111 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 [2023-12-24 22:46:39,308 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 [2023-12-24 22:46:39,309 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:46:39,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:46:39,309 INFO L85 PathProgramCache]: Analyzing trace with hash -689107135, now seen corresponding path program 5 times [2023-12-24 22:46:39,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:46:39,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [560197755] [2023-12-24 22:46:39,309 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-24 22:46:39,309 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 [2023-12-24 22:46:39,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:46:39,310 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) [2023-12-24 22:46:39,311 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 [2023-12-24 22:46:39,343 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-12-24 22:46:39,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:46:39,345 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-24 22:46:39,347 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:46:39,771 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:46:39,772 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:46:40,797 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 5 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:46:40,797 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:46:40,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [560197755] [2023-12-24 22:46:40,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [560197755] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:46:40,797 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:46:40,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 33 [2023-12-24 22:46:40,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231089871] [2023-12-24 22:46:40,797 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:46:40,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-24 22:46:40,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:46:40,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-24 22:46:40,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=896, Unknown=0, NotChecked=0, Total=1122 [2023-12-24 22:46:40,798 INFO L87 Difference]: Start difference. First operand 133 states and 175 transitions. Second operand has 34 states, 34 states have (on average 1.4705882352941178) internal successors, (50), 33 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:46:41,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:46:41,743 INFO L93 Difference]: Finished difference Result 232 states and 292 transitions. [2023-12-24 22:46:41,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-24 22:46:41,744 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.4705882352941178) internal successors, (50), 33 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-12-24 22:46:41,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:46:41,744 INFO L225 Difference]: With dead ends: 232 [2023-12-24 22:46:41,744 INFO L226 Difference]: Without dead ends: 215 [2023-12-24 22:46:41,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 518 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=531, Invalid=1821, Unknown=0, NotChecked=0, Total=2352 [2023-12-24 22:46:41,745 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 81 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 22:46:41,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 140 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 22:46:41,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2023-12-24 22:46:41,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 137. [2023-12-24 22:46:41,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 136 states have (on average 1.3161764705882353) internal successors, (179), 136 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:46:41,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 179 transitions. [2023-12-24 22:46:41,780 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 179 transitions. Word has length 26 [2023-12-24 22:46:41,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:46:41,780 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 179 transitions. [2023-12-24 22:46:41,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.4705882352941178) internal successors, (50), 33 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:46:41,780 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 179 transitions. [2023-12-24 22:46:41,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-24 22:46:41,781 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:46:41,781 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:46:41,786 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 (16)] Ended with exit code 0 [2023-12-24 22:46:41,981 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 [2023-12-24 22:46:41,981 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:46:41,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:46:41,982 INFO L85 PathProgramCache]: Analyzing trace with hash -758300544, now seen corresponding path program 4 times [2023-12-24 22:46:41,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:46:41,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1614560204] [2023-12-24 22:46:41,982 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-24 22:46:41,982 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 [2023-12-24 22:46:41,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:46:41,983 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) [2023-12-24 22:46:41,984 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 [2023-12-24 22:46:42,021 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-24 22:46:42,021 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:46:42,023 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-24 22:46:42,024 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:46:42,357 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:46:42,357 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:46:43,257 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:46:43,258 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:46:43,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1614560204] [2023-12-24 22:46:43,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1614560204] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:46:43,258 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:46:43,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 31 [2023-12-24 22:46:43,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694199421] [2023-12-24 22:46:43,258 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:46:43,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-24 22:46:43,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:46:43,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-24 22:46:43,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=791, Unknown=0, NotChecked=0, Total=992 [2023-12-24 22:46:43,259 INFO L87 Difference]: Start difference. First operand 137 states and 179 transitions. Second operand has 32 states, 32 states have (on average 1.5625) internal successors, (50), 31 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:46:44,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:46:44,603 INFO L93 Difference]: Finished difference Result 313 states and 391 transitions. [2023-12-24 22:46:44,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-24 22:46:44,603 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.5625) internal successors, (50), 31 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-12-24 22:46:44,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:46:44,604 INFO L225 Difference]: With dead ends: 313 [2023-12-24 22:46:44,604 INFO L226 Difference]: Without dead ends: 296 [2023-12-24 22:46:44,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 575 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=500, Invalid=2050, Unknown=0, NotChecked=0, Total=2550 [2023-12-24 22:46:44,605 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 105 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 22:46:44,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 219 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 22:46:44,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2023-12-24 22:46:44,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 136. [2023-12-24 22:46:44,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 1.3185185185185184) internal successors, (178), 135 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) [2023-12-24 22:46:44,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 178 transitions. [2023-12-24 22:46:44,645 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 178 transitions. Word has length 26 [2023-12-24 22:46:44,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:46:44,646 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 178 transitions. [2023-12-24 22:46:44,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.5625) internal successors, (50), 31 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:46:44,646 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 178 transitions. [2023-12-24 22:46:44,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-24 22:46:44,646 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:46:44,646 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:46:44,649 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 [2023-12-24 22:46:44,848 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 [2023-12-24 22:46:44,848 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:46:44,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:46:44,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1871866721, now seen corresponding path program 5 times [2023-12-24 22:46:44,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:46:44,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1297669809] [2023-12-24 22:46:44,849 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-24 22:46:44,849 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 [2023-12-24 22:46:44,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:46:44,850 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) [2023-12-24 22:46:44,851 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 [2023-12-24 22:46:44,881 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-12-24 22:46:44,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:46:44,883 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-24 22:46:44,883 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:46:45,211 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:46:45,211 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:46:46,138 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:46:46,139 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:46:46,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1297669809] [2023-12-24 22:46:46,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1297669809] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:46:46,139 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:46:46,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 31 [2023-12-24 22:46:46,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438491724] [2023-12-24 22:46:46,139 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:46:46,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-24 22:46:46,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:46:46,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-24 22:46:46,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=790, Unknown=0, NotChecked=0, Total=992 [2023-12-24 22:46:46,140 INFO L87 Difference]: Start difference. First operand 136 states and 178 transitions. Second operand has 32 states, 32 states have (on average 1.5625) internal successors, (50), 31 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:46:47,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:46:47,911 INFO L93 Difference]: Finished difference Result 393 states and 489 transitions. [2023-12-24 22:46:47,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-24 22:46:47,912 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.5625) internal successors, (50), 31 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-12-24 22:46:47,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:46:47,913 INFO L225 Difference]: With dead ends: 393 [2023-12-24 22:46:47,913 INFO L226 Difference]: Without dead ends: 376 [2023-12-24 22:46:47,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 689 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=577, Invalid=2393, Unknown=0, NotChecked=0, Total=2970 [2023-12-24 22:46:47,914 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 151 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 22:46:47,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 290 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 22:46:47,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2023-12-24 22:46:47,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 135. [2023-12-24 22:46:47,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 134 states have (on average 1.3208955223880596) internal successors, (177), 134 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:46:47,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 177 transitions. [2023-12-24 22:46:47,959 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 177 transitions. Word has length 26 [2023-12-24 22:46:47,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:46:47,960 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 177 transitions. [2023-12-24 22:46:47,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.5625) internal successors, (50), 31 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:46:47,960 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 177 transitions. [2023-12-24 22:46:47,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-24 22:46:47,960 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:46:47,960 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:46:47,962 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 (18)] Forceful destruction successful, exit code 0 [2023-12-24 22:46:48,162 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 [2023-12-24 22:46:48,163 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:46:48,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:46:48,163 INFO L85 PathProgramCache]: Analyzing trace with hash -537141152, now seen corresponding path program 6 times [2023-12-24 22:46:48,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:46:48,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [259912398] [2023-12-24 22:46:48,163 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-24 22:46:48,163 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 [2023-12-24 22:46:48,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:46:48,164 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) [2023-12-24 22:46:48,165 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 (19)] Waiting until timeout for monitored process [2023-12-24 22:46:48,202 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-12-24 22:46:48,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:46:48,204 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-24 22:46:48,205 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:46:48,518 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:46:48,518 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:46:49,433 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:46:49,433 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:46:49,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [259912398] [2023-12-24 22:46:49,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [259912398] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:46:49,433 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:46:49,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 31 [2023-12-24 22:46:49,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526833170] [2023-12-24 22:46:49,433 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:46:49,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-24 22:46:49,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:46:49,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-24 22:46:49,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=789, Unknown=0, NotChecked=0, Total=992 [2023-12-24 22:46:49,434 INFO L87 Difference]: Start difference. First operand 135 states and 177 transitions. Second operand has 32 states, 32 states have (on average 1.5625) internal successors, (50), 31 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:46:51,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:46:51,100 INFO L93 Difference]: Finished difference Result 472 states and 586 transitions. [2023-12-24 22:46:51,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-24 22:46:51,100 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.5625) internal successors, (50), 31 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-12-24 22:46:51,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:46:51,101 INFO L225 Difference]: With dead ends: 472 [2023-12-24 22:46:51,101 INFO L226 Difference]: Without dead ends: 455 [2023-12-24 22:46:51,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 618 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=551, Invalid=2205, Unknown=0, NotChecked=0, Total=2756 [2023-12-24 22:46:51,102 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 180 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 22:46:51,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 307 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 22:46:51,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2023-12-24 22:46:51,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 134. [2023-12-24 22:46:51,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 133 states have (on average 1.3233082706766917) internal successors, (176), 133 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:46:51,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 176 transitions. [2023-12-24 22:46:51,156 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 176 transitions. Word has length 26 [2023-12-24 22:46:51,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:46:51,156 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 176 transitions. [2023-12-24 22:46:51,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.5625) internal successors, (50), 31 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:46:51,157 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 176 transitions. [2023-12-24 22:46:51,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-24 22:46:51,157 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:46:51,157 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:46:51,176 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 [2023-12-24 22:46:51,359 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 [2023-12-24 22:46:51,360 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:46:51,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:46:51,360 INFO L85 PathProgramCache]: Analyzing trace with hash -199209087, now seen corresponding path program 4 times [2023-12-24 22:46:51,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:46:51,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1097142733] [2023-12-24 22:46:51,360 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-24 22:46:51,360 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 [2023-12-24 22:46:51,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:46:51,361 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) [2023-12-24 22:46:51,364 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 [2023-12-24 22:46:51,391 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-24 22:46:51,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:46:51,393 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-24 22:46:51,394 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:46:51,794 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:46:51,795 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:46:52,952 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 5 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:46:52,953 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:46:52,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1097142733] [2023-12-24 22:46:52,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1097142733] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:46:52,953 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:46:52,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 33 [2023-12-24 22:46:52,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745769157] [2023-12-24 22:46:52,953 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:46:52,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-24 22:46:52,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:46:52,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-24 22:46:52,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=896, Unknown=0, NotChecked=0, Total=1122 [2023-12-24 22:46:52,954 INFO L87 Difference]: Start difference. First operand 134 states and 176 transitions. Second operand has 34 states, 34 states have (on average 1.4705882352941178) internal successors, (50), 33 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:46:54,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:46:54,539 INFO L93 Difference]: Finished difference Result 549 states and 680 transitions. [2023-12-24 22:46:54,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-24 22:46:54,539 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.4705882352941178) internal successors, (50), 33 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-12-24 22:46:54,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:46:54,540 INFO L225 Difference]: With dead ends: 549 [2023-12-24 22:46:54,541 INFO L226 Difference]: Without dead ends: 532 [2023-12-24 22:46:54,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 522 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=505, Invalid=1945, Unknown=0, NotChecked=0, Total=2450 [2023-12-24 22:46:54,541 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 296 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 654 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-24 22:46:54,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 490 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 654 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-24 22:46:54,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2023-12-24 22:46:54,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 132. [2023-12-24 22:46:54,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 1.3206106870229009) internal successors, (173), 131 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:46:54,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 173 transitions. [2023-12-24 22:46:54,590 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 173 transitions. Word has length 26 [2023-12-24 22:46:54,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:46:54,590 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 173 transitions. [2023-12-24 22:46:54,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.4705882352941178) internal successors, (50), 33 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:46:54,590 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 173 transitions. [2023-12-24 22:46:54,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-24 22:46:54,591 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:46:54,591 INFO L195 NwaCegarLoop]: trace histogram [11, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:46:54,593 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 (20)] Ended with exit code 0 [2023-12-24 22:46:54,793 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 [2023-12-24 22:46:54,794 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:46:54,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:46:54,794 INFO L85 PathProgramCache]: Analyzing trace with hash 927379955, now seen corresponding path program 6 times [2023-12-24 22:46:54,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:46:54,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [527676795] [2023-12-24 22:46:54,794 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-24 22:46:54,794 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 [2023-12-24 22:46:54,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:46:54,795 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) [2023-12-24 22:46:54,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-12-24 22:46:54,831 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2023-12-24 22:46:54,831 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:46:54,833 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-24 22:46:54,834 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:46:54,939 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:46:54,939 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:46:55,549 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:46:55,549 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:46:55,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [527676795] [2023-12-24 22:46:55,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [527676795] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:46:55,550 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:46:55,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17] total 31 [2023-12-24 22:46:55,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405169180] [2023-12-24 22:46:55,550 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:46:55,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-24 22:46:55,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:46:55,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-24 22:46:55,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=274, Invalid=718, Unknown=0, NotChecked=0, Total=992 [2023-12-24 22:46:55,551 INFO L87 Difference]: Start difference. First operand 132 states and 173 transitions. Second operand has 32 states, 32 states have (on average 1.65625) internal successors, (53), 31 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:47:01,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:47:01,606 INFO L93 Difference]: Finished difference Result 297 states and 357 transitions. [2023-12-24 22:47:01,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2023-12-24 22:47:01,607 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.65625) internal successors, (53), 31 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-12-24 22:47:01,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:47:01,608 INFO L225 Difference]: With dead ends: 297 [2023-12-24 22:47:01,608 INFO L226 Difference]: Without dead ends: 292 [2023-12-24 22:47:01,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3164 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=2786, Invalid=7516, Unknown=0, NotChecked=0, Total=10302 [2023-12-24 22:47:01,609 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 908 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 908 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 1039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-24 22:47:01,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [908 Valid, 615 Invalid, 1039 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 779 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-24 22:47:01,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2023-12-24 22:47:01,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 150. [2023-12-24 22:47:01,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 1.3557046979865772) internal successors, (202), 149 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:47:01,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 202 transitions. [2023-12-24 22:47:01,692 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 202 transitions. Word has length 27 [2023-12-24 22:47:01,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:47:01,692 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 202 transitions. [2023-12-24 22:47:01,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.65625) internal successors, (53), 31 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:47:01,692 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 202 transitions. [2023-12-24 22:47:01,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-24 22:47:01,692 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:47:01,692 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:47:01,696 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-12-24 22:47:01,895 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 [2023-12-24 22:47:01,895 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:47:01,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:47:01,895 INFO L85 PathProgramCache]: Analyzing trace with hash 803236125, now seen corresponding path program 7 times [2023-12-24 22:47:01,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:47:01,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [508234345] [2023-12-24 22:47:01,896 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-24 22:47:01,896 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 [2023-12-24 22:47:01,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:47:01,897 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) [2023-12-24 22:47:01,897 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 [2023-12-24 22:47:01,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 22:47:01,935 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-24 22:47:01,936 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:47:02,408 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 5 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:47:02,408 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:47:03,550 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 6 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:47:03,551 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:47:03,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [508234345] [2023-12-24 22:47:03,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [508234345] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:47:03,551 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:47:03,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 37 [2023-12-24 22:47:03,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933658506] [2023-12-24 22:47:03,551 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:47:03,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-12-24 22:47:03,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:47:03,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-12-24 22:47:03,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=1135, Unknown=0, NotChecked=0, Total=1406 [2023-12-24 22:47:03,552 INFO L87 Difference]: Start difference. First operand 150 states and 202 transitions. Second operand has 38 states, 38 states have (on average 1.5263157894736843) internal successors, (58), 37 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:47:04,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:47:04,622 INFO L93 Difference]: Finished difference Result 261 states and 337 transitions. [2023-12-24 22:47:04,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-24 22:47:04,622 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.5263157894736843) internal successors, (58), 37 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-12-24 22:47:04,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:47:04,623 INFO L225 Difference]: With dead ends: 261 [2023-12-24 22:47:04,623 INFO L226 Difference]: Without dead ends: 241 [2023-12-24 22:47:04,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 659 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=632, Invalid=2338, Unknown=0, NotChecked=0, Total=2970 [2023-12-24 22:47:04,623 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 89 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 22:47:04,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 192 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 22:47:04,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2023-12-24 22:47:04,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 155. [2023-12-24 22:47:04,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 154 states have (on average 1.344155844155844) internal successors, (207), 154 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:47:04,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 207 transitions. [2023-12-24 22:47:04,696 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 207 transitions. Word has length 30 [2023-12-24 22:47:04,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:47:04,696 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 207 transitions. [2023-12-24 22:47:04,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.5263157894736843) internal successors, (58), 37 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:47:04,696 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 207 transitions. [2023-12-24 22:47:04,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-24 22:47:04,696 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:47:04,697 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:47:04,700 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 [2023-12-24 22:47:04,897 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 [2023-12-24 22:47:04,897 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:47:04,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:47:04,897 INFO L85 PathProgramCache]: Analyzing trace with hash -239607076, now seen corresponding path program 7 times [2023-12-24 22:47:04,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:47:04,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [73420674] [2023-12-24 22:47:04,898 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-24 22:47:04,898 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 [2023-12-24 22:47:04,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:47:04,898 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) [2023-12-24 22:47:04,899 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 [2023-12-24 22:47:04,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 22:47:04,944 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-24 22:47:04,945 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:47:05,342 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 5 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:47:05,343 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:47:06,525 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 5 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:47:06,525 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:47:06,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [73420674] [2023-12-24 22:47:06,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [73420674] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:47:06,525 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:47:06,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 35 [2023-12-24 22:47:06,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450873273] [2023-12-24 22:47:06,525 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:47:06,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-24 22:47:06,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:47:06,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-24 22:47:06,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=1016, Unknown=0, NotChecked=0, Total=1260 [2023-12-24 22:47:06,526 INFO L87 Difference]: Start difference. First operand 155 states and 207 transitions. Second operand has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 35 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:47:08,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:47:08,305 INFO L93 Difference]: Finished difference Result 351 states and 451 transitions. [2023-12-24 22:47:08,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-24 22:47:08,305 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 35 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-12-24 22:47:08,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:47:08,306 INFO L225 Difference]: With dead ends: 351 [2023-12-24 22:47:08,306 INFO L226 Difference]: Without dead ends: 331 [2023-12-24 22:47:08,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 759 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=609, Invalid=2697, Unknown=0, NotChecked=0, Total=3306 [2023-12-24 22:47:08,307 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 147 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 22:47:08,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 244 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 22:47:08,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2023-12-24 22:47:08,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 154. [2023-12-24 22:47:08,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 1.34640522875817) internal successors, (206), 153 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:47:08,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 206 transitions. [2023-12-24 22:47:08,391 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 206 transitions. Word has length 30 [2023-12-24 22:47:08,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:47:08,396 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 206 transitions. [2023-12-24 22:47:08,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 35 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:47:08,396 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 206 transitions. [2023-12-24 22:47:08,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-24 22:47:08,396 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:47:08,396 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:47:08,401 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-12-24 22:47:08,599 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 [2023-12-24 22:47:08,599 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:47:08,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:47:08,599 INFO L85 PathProgramCache]: Analyzing trace with hash 3847485, now seen corresponding path program 8 times [2023-12-24 22:47:08,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:47:08,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1673129395] [2023-12-24 22:47:08,600 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-24 22:47:08,600 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 [2023-12-24 22:47:08,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:47:08,601 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) [2023-12-24 22:47:08,602 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 [2023-12-24 22:47:08,643 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-24 22:47:08,644 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:47:08,645 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-24 22:47:08,646 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:47:09,035 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 5 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:47:09,035 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:47:10,221 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 5 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:47:10,222 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:47:10,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1673129395] [2023-12-24 22:47:10,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1673129395] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:47:10,222 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:47:10,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 35 [2023-12-24 22:47:10,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480790668] [2023-12-24 22:47:10,222 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:47:10,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-24 22:47:10,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:47:10,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-24 22:47:10,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=1015, Unknown=0, NotChecked=0, Total=1260 [2023-12-24 22:47:10,223 INFO L87 Difference]: Start difference. First operand 154 states and 206 transitions. Second operand has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 35 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:47:12,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:47:12,640 INFO L93 Difference]: Finished difference Result 440 states and 564 transitions. [2023-12-24 22:47:12,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-12-24 22:47:12,640 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 35 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-12-24 22:47:12,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:47:12,641 INFO L225 Difference]: With dead ends: 440 [2023-12-24 22:47:12,641 INFO L226 Difference]: Without dead ends: 420 [2023-12-24 22:47:12,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 928 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=702, Invalid=3204, Unknown=0, NotChecked=0, Total=3906 [2023-12-24 22:47:12,642 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 204 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 591 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-24 22:47:12,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 324 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 591 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-24 22:47:12,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2023-12-24 22:47:12,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 153. [2023-12-24 22:47:12,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 152 states have (on average 1.3486842105263157) internal successors, (205), 152 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:47:12,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 205 transitions. [2023-12-24 22:47:12,732 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 205 transitions. Word has length 30 [2023-12-24 22:47:12,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:47:12,732 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 205 transitions. [2023-12-24 22:47:12,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 35 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:47:12,732 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 205 transitions. [2023-12-24 22:47:12,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-24 22:47:12,732 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:47:12,732 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:47:12,738 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 [2023-12-24 22:47:12,935 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 [2023-12-24 22:47:12,936 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:47:12,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:47:12,936 INFO L85 PathProgramCache]: Analyzing trace with hash -2066509124, now seen corresponding path program 9 times [2023-12-24 22:47:12,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:47:12,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1109143331] [2023-12-24 22:47:12,936 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-24 22:47:12,936 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 [2023-12-24 22:47:12,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:47:12,938 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) [2023-12-24 22:47:12,941 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 [2023-12-24 22:47:12,980 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-12-24 22:47:12,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:47:12,982 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-24 22:47:12,983 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:47:13,377 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 5 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:47:13,377 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:47:14,546 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 5 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:47:14,546 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:47:14,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1109143331] [2023-12-24 22:47:14,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1109143331] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:47:14,546 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:47:14,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 35 [2023-12-24 22:47:14,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94042000] [2023-12-24 22:47:14,546 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:47:14,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-24 22:47:14,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:47:14,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-24 22:47:14,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=1014, Unknown=0, NotChecked=0, Total=1260 [2023-12-24 22:47:14,547 INFO L87 Difference]: Start difference. First operand 153 states and 205 transitions. Second operand has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 35 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:47:17,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:47:17,288 INFO L93 Difference]: Finished difference Result 528 states and 676 transitions. [2023-12-24 22:47:17,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-12-24 22:47:17,288 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 35 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-12-24 22:47:17,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:47:17,290 INFO L225 Difference]: With dead ends: 528 [2023-12-24 22:47:17,290 INFO L226 Difference]: Without dead ends: 508 [2023-12-24 22:47:17,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 984 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=737, Invalid=3423, Unknown=0, NotChecked=0, Total=4160 [2023-12-24 22:47:17,290 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 195 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-24 22:47:17,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 374 Invalid, 668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 661 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-24 22:47:17,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2023-12-24 22:47:17,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 152. [2023-12-24 22:47:17,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 1.3509933774834437) internal successors, (204), 151 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:47:17,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 204 transitions. [2023-12-24 22:47:17,371 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 204 transitions. Word has length 30 [2023-12-24 22:47:17,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:47:17,372 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 204 transitions. [2023-12-24 22:47:17,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 35 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:47:17,372 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 204 transitions. [2023-12-24 22:47:17,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-24 22:47:17,372 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:47:17,372 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:47:17,377 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 (25)] Forceful destruction successful, exit code 0 [2023-12-24 22:47:17,572 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 [2023-12-24 22:47:17,573 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:47:17,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:47:17,573 INFO L85 PathProgramCache]: Analyzing trace with hash 83462493, now seen corresponding path program 10 times [2023-12-24 22:47:17,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:47:17,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [398400610] [2023-12-24 22:47:17,573 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-24 22:47:17,573 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 [2023-12-24 22:47:17,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:47:17,574 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) [2023-12-24 22:47:17,575 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 [2023-12-24 22:47:17,617 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-24 22:47:17,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:47:17,619 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-24 22:47:17,620 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:47:18,010 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 5 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:47:18,010 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:47:19,207 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 5 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:47:19,208 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:47:19,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [398400610] [2023-12-24 22:47:19,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [398400610] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:47:19,208 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:47:19,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 35 [2023-12-24 22:47:19,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875791711] [2023-12-24 22:47:19,208 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:47:19,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-24 22:47:19,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:47:19,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-24 22:47:19,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=1013, Unknown=0, NotChecked=0, Total=1260 [2023-12-24 22:47:19,209 INFO L87 Difference]: Start difference. First operand 152 states and 204 transitions. Second operand has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 35 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:47:21,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:47:21,858 INFO L93 Difference]: Finished difference Result 615 states and 787 transitions. [2023-12-24 22:47:21,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-12-24 22:47:21,858 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 35 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-12-24 22:47:21,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:47:21,859 INFO L225 Difference]: With dead ends: 615 [2023-12-24 22:47:21,859 INFO L226 Difference]: Without dead ends: 595 [2023-12-24 22:47:21,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 823 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=685, Invalid=2975, Unknown=0, NotChecked=0, Total=3660 [2023-12-24 22:47:21,860 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 232 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 673 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-24 22:47:21,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 432 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 673 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-24 22:47:21,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2023-12-24 22:47:21,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 151. [2023-12-24 22:47:21,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 150 states have (on average 1.3533333333333333) internal successors, (203), 150 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:47:21,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 203 transitions. [2023-12-24 22:47:21,950 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 203 transitions. Word has length 30 [2023-12-24 22:47:21,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:47:21,950 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 203 transitions. [2023-12-24 22:47:21,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 35 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:47:21,951 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 203 transitions. [2023-12-24 22:47:21,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-24 22:47:21,951 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:47:21,951 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:47:21,953 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 [2023-12-24 22:47:22,151 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 [2023-12-24 22:47:22,151 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:47:22,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:47:22,152 INFO L85 PathProgramCache]: Analyzing trace with hash 14269084, now seen corresponding path program 5 times [2023-12-24 22:47:22,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:47:22,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [614594423] [2023-12-24 22:47:22,152 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-24 22:47:22,152 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:47:22,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:47:22,153 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) [2023-12-24 22:47:22,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-12-24 22:47:22,193 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2023-12-24 22:47:22,193 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:47:22,195 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-24 22:47:22,196 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:47:22,767 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 5 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:47:22,767 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:47:24,851 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 9 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:47:24,851 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:47:24,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [614594423] [2023-12-24 22:47:24,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [614594423] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:47:24,851 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:47:24,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 39 [2023-12-24 22:47:24,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665903055] [2023-12-24 22:47:24,851 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:47:24,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-12-24 22:47:24,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:47:24,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-12-24 22:47:24,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=301, Invalid=1259, Unknown=0, NotChecked=0, Total=1560 [2023-12-24 22:47:24,852 INFO L87 Difference]: Start difference. First operand 151 states and 203 transitions. Second operand has 40 states, 40 states have (on average 1.45) internal successors, (58), 39 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:47:27,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:47:27,145 INFO L93 Difference]: Finished difference Result 700 states and 895 transitions. [2023-12-24 22:47:27,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-24 22:47:27,146 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.45) internal successors, (58), 39 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-12-24 22:47:27,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:47:27,147 INFO L225 Difference]: With dead ends: 700 [2023-12-24 22:47:27,147 INFO L226 Difference]: Without dead ends: 680 [2023-12-24 22:47:27,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 793 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=682, Invalid=2858, Unknown=0, NotChecked=0, Total=3540 [2023-12-24 22:47:27,148 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 231 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 733 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-24 22:47:27,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 553 Invalid, 740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 733 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-24 22:47:27,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2023-12-24 22:47:27,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 149. [2023-12-24 22:47:27,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 1.3513513513513513) internal successors, (200), 148 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:47:27,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 200 transitions. [2023-12-24 22:47:27,242 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 200 transitions. Word has length 30 [2023-12-24 22:47:27,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:47:27,242 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 200 transitions. [2023-12-24 22:47:27,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.45) internal successors, (58), 39 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:47:27,242 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 200 transitions. [2023-12-24 22:47:27,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-24 22:47:27,242 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:47:27,242 INFO L195 NwaCegarLoop]: trace histogram [12, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:47:27,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2023-12-24 22:47:27,443 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 [2023-12-24 22:47:27,443 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:47:27,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:47:27,443 INFO L85 PathProgramCache]: Analyzing trace with hash -536848433, now seen corresponding path program 8 times [2023-12-24 22:47:27,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:47:27,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1078644361] [2023-12-24 22:47:27,443 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-24 22:47:27,444 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 [2023-12-24 22:47:27,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:47:27,444 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) [2023-12-24 22:47:27,447 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 [2023-12-24 22:47:27,484 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-24 22:47:27,484 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:47:27,486 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-24 22:47:27,487 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:47:27,589 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:47:27,589 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:47:27,951 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:47:27,951 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:47:27,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1078644361] [2023-12-24 22:47:27,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1078644361] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:47:27,951 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:47:27,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 29 [2023-12-24 22:47:27,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003142622] [2023-12-24 22:47:27,951 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:47:27,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-24 22:47:27,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:47:27,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-24 22:47:27,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=653, Unknown=0, NotChecked=0, Total=870 [2023-12-24 22:47:27,952 INFO L87 Difference]: Start difference. First operand 149 states and 200 transitions. Second operand has 30 states, 30 states have (on average 2.033333333333333) internal successors, (61), 29 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) [2023-12-24 22:47:44,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:47:44,770 INFO L93 Difference]: Finished difference Result 559 states and 626 transitions. [2023-12-24 22:47:44,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 211 states. [2023-12-24 22:47:44,770 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.033333333333333) internal successors, (61), 29 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 31 [2023-12-24 22:47:44,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:47:44,771 INFO L225 Difference]: With dead ends: 559 [2023-12-24 22:47:44,771 INFO L226 Difference]: Without dead ends: 557 [2023-12-24 22:47:44,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18456 ImplicationChecksByTransitivity, 15.6s TimeCoverageRelationStatistics Valid=9058, Invalid=35674, Unknown=0, NotChecked=0, Total=44732 [2023-12-24 22:47:44,774 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 2007 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 898 mSolverCounterSat, 691 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2007 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 1589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 691 IncrementalHoareTripleChecker+Valid, 898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-24 22:47:44,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2007 Valid, 681 Invalid, 1589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [691 Valid, 898 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-24 22:47:44,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2023-12-24 22:47:44,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 177. [2023-12-24 22:47:44,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 176 states have (on average 1.2954545454545454) internal successors, (228), 176 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:47:44,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 228 transitions. [2023-12-24 22:47:44,905 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 228 transitions. Word has length 31 [2023-12-24 22:47:44,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:47:44,905 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 228 transitions. [2023-12-24 22:47:44,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.033333333333333) internal successors, (61), 29 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) [2023-12-24 22:47:44,905 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 228 transitions. [2023-12-24 22:47:44,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-24 22:47:44,905 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:47:44,905 INFO L195 NwaCegarLoop]: trace histogram [23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:47:44,910 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 [2023-12-24 22:47:45,108 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 [2023-12-24 22:47:45,108 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:47:45,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:47:45,109 INFO L85 PathProgramCache]: Analyzing trace with hash 875058355, now seen corresponding path program 4 times [2023-12-24 22:47:45,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:47:45,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [232975087] [2023-12-24 22:47:45,109 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-24 22:47:45,109 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 [2023-12-24 22:47:45,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:47:45,110 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) [2023-12-24 22:47:45,111 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 [2023-12-24 22:47:45,161 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-24 22:47:45,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:47:45,164 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-24 22:47:45,165 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:47:45,430 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:47:45,431 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:47:46,437 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:47:46,437 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:47:46,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [232975087] [2023-12-24 22:47:46,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [232975087] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:47:46,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:47:46,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 51 [2023-12-24 22:47:46,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581750529] [2023-12-24 22:47:46,437 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:47:46,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-12-24 22:47:46,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:47:46,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-12-24 22:47:46,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=677, Invalid=1975, Unknown=0, NotChecked=0, Total=2652 [2023-12-24 22:47:46,438 INFO L87 Difference]: Start difference. First operand 177 states and 228 transitions. Second operand has 52 states, 52 states have (on average 1.25) internal successors, (65), 51 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) [2023-12-24 22:51:07,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:51:07,247 INFO L93 Difference]: Finished difference Result 1913 states and 2048 transitions. [2023-12-24 22:51:07,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 651 states. [2023-12-24 22:51:07,247 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.25) internal successors, (65), 51 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 33 [2023-12-24 22:51:07,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:51:07,251 INFO L225 Difference]: With dead ends: 1913 [2023-12-24 22:51:07,251 INFO L226 Difference]: Without dead ends: 1911 [2023-12-24 22:51:07,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 664 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 650 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200472 ImplicationChecksByTransitivity, 194.9s TimeCoverageRelationStatistics Valid=75275, Invalid=349177, Unknown=0, NotChecked=0, Total=424452 [2023-12-24 22:51:07,272 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 12468 mSDsluCounter, 2334 mSDsCounter, 0 mSdLazyCounter, 3101 mSolverCounterSat, 3513 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12468 SdHoareTripleChecker+Valid, 2423 SdHoareTripleChecker+Invalid, 6614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3513 IncrementalHoareTripleChecker+Valid, 3101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-12-24 22:51:07,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12468 Valid, 2423 Invalid, 6614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3513 Valid, 3101 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-12-24 22:51:07,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1911 states. [2023-12-24 22:51:07,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1911 to 285. [2023-12-24 22:51:07,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 284 states have (on average 1.3309859154929577) internal successors, (378), 284 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:51:07,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 378 transitions. [2023-12-24 22:51:07,524 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 378 transitions. Word has length 33 [2023-12-24 22:51:07,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:51:07,524 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 378 transitions. [2023-12-24 22:51:07,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.25) internal successors, (65), 51 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) [2023-12-24 22:51:07,524 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 378 transitions. [2023-12-24 22:51:07,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-24 22:51:07,524 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:51:07,524 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:51:07,530 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 (29)] Ended with exit code 0 [2023-12-24 22:51:07,728 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 [2023-12-24 22:51:07,728 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:51:07,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:51:07,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1812137279, now seen corresponding path program 9 times [2023-12-24 22:51:07,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:51:07,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1391507941] [2023-12-24 22:51:07,728 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-24 22:51:07,728 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:51:07,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:51:07,729 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) [2023-12-24 22:51:07,730 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 [2023-12-24 22:51:07,774 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-12-24 22:51:07,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:51:07,776 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-24 22:51:07,777 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:51:08,373 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 6 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:51:08,373 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:51:10,026 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 11 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:51:10,027 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:51:10,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1391507941] [2023-12-24 22:51:10,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1391507941] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:51:10,027 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:51:10,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 43 [2023-12-24 22:51:10,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873601418] [2023-12-24 22:51:10,027 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:51:10,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-12-24 22:51:10,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:51:10,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-12-24 22:51:10,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=352, Invalid=1540, Unknown=0, NotChecked=0, Total=1892 [2023-12-24 22:51:10,028 INFO L87 Difference]: Start difference. First operand 285 states and 378 transitions. Second operand has 44 states, 44 states have (on average 1.5) internal successors, (66), 43 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:51:11,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:51:11,822 INFO L93 Difference]: Finished difference Result 490 states and 626 transitions. [2023-12-24 22:51:11,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-24 22:51:11,822 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.5) internal successors, (66), 43 states have internal predecessors, (66), 0 states have call successors, (0), 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 34 [2023-12-24 22:51:11,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:51:11,823 INFO L225 Difference]: With dead ends: 490 [2023-12-24 22:51:11,823 INFO L226 Difference]: Without dead ends: 467 [2023-12-24 22:51:11,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 938 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=814, Invalid=3218, Unknown=0, NotChecked=0, Total=4032 [2023-12-24 22:51:11,824 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 85 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 22:51:11,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 261 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 22:51:11,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2023-12-24 22:51:12,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 291. [2023-12-24 22:51:12,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 290 states have (on average 1.3241379310344827) internal successors, (384), 290 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:51:12,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 384 transitions. [2023-12-24 22:51:12,094 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 384 transitions. Word has length 34 [2023-12-24 22:51:12,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:51:12,094 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 384 transitions. [2023-12-24 22:51:12,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.5) internal successors, (66), 43 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:51:12,094 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 384 transitions. [2023-12-24 22:51:12,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-24 22:51:12,095 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:51:12,095 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:51:12,097 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 [2023-12-24 22:51:12,297 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 [2023-12-24 22:51:12,297 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:51:12,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:51:12,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1173585152, now seen corresponding path program 11 times [2023-12-24 22:51:12,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:51:12,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1220862015] [2023-12-24 22:51:12,298 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-24 22:51:12,298 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 [2023-12-24 22:51:12,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:51:12,299 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) [2023-12-24 22:51:12,299 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 [2023-12-24 22:51:12,338 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2023-12-24 22:51:12,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:51:12,340 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-24 22:51:12,341 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:51:12,818 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 6 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:51:12,818 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:51:14,165 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 6 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:51:14,166 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:51:14,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1220862015] [2023-12-24 22:51:14,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1220862015] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:51:14,166 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:51:14,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 39 [2023-12-24 22:51:14,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685380593] [2023-12-24 22:51:14,166 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:51:14,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-12-24 22:51:14,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:51:14,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-12-24 22:51:14,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=291, Invalid=1269, Unknown=0, NotChecked=0, Total=1560 [2023-12-24 22:51:14,167 INFO L87 Difference]: Start difference. First operand 291 states and 384 transitions. Second operand has 40 states, 40 states have (on average 1.65) internal successors, (66), 39 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:51:16,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:51:16,607 INFO L93 Difference]: Finished difference Result 671 states and 850 transitions. [2023-12-24 22:51:16,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-24 22:51:16,607 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.65) internal successors, (66), 39 states have internal predecessors, (66), 0 states have call successors, (0), 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 34 [2023-12-24 22:51:16,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:51:16,608 INFO L225 Difference]: With dead ends: 671 [2023-12-24 22:51:16,609 INFO L226 Difference]: Without dead ends: 648 [2023-12-24 22:51:16,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 971 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=720, Invalid=3440, Unknown=0, NotChecked=0, Total=4160 [2023-12-24 22:51:16,609 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 158 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-24 22:51:16,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 272 Invalid, 605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-24 22:51:16,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2023-12-24 22:51:16,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 290. [2023-12-24 22:51:16,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 289 states have (on average 1.3252595155709344) internal successors, (383), 289 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:51:16,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 383 transitions. [2023-12-24 22:51:16,833 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 383 transitions. Word has length 34 [2023-12-24 22:51:16,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:51:16,833 INFO L495 AbstractCegarLoop]: Abstraction has 290 states and 383 transitions. [2023-12-24 22:51:16,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.65) internal successors, (66), 39 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:51:16,833 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 383 transitions. [2023-12-24 22:51:16,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-24 22:51:16,833 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:51:16,834 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:51:16,838 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 (31)] Ended with exit code 0 [2023-12-24 22:51:17,034 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 [2023-12-24 22:51:17,034 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:51:17,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:51:17,034 INFO L85 PathProgramCache]: Analyzing trace with hash -669763871, now seen corresponding path program 12 times [2023-12-24 22:51:17,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:51:17,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1629122050] [2023-12-24 22:51:17,035 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-24 22:51:17,035 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:51:17,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:51:17,037 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) [2023-12-24 22:51:17,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2023-12-24 22:51:17,091 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2023-12-24 22:51:17,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:51:17,093 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-24 22:51:17,094 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:51:17,557 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 6 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:51:17,558 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:51:18,993 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 6 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:51:18,994 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:51:18,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1629122050] [2023-12-24 22:51:18,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1629122050] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:51:18,994 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:51:18,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 39 [2023-12-24 22:51:18,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982098046] [2023-12-24 22:51:18,994 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:51:18,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-12-24 22:51:18,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:51:18,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-12-24 22:51:18,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=292, Invalid=1268, Unknown=0, NotChecked=0, Total=1560 [2023-12-24 22:51:18,995 INFO L87 Difference]: Start difference. First operand 290 states and 383 transitions. Second operand has 40 states, 40 states have (on average 1.65) internal successors, (66), 39 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:51:22,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:51:22,499 INFO L93 Difference]: Finished difference Result 851 states and 1073 transitions. [2023-12-24 22:51:22,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-12-24 22:51:22,499 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.65) internal successors, (66), 39 states have internal predecessors, (66), 0 states have call successors, (0), 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 34 [2023-12-24 22:51:22,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:51:22,501 INFO L225 Difference]: With dead ends: 851 [2023-12-24 22:51:22,501 INFO L226 Difference]: Without dead ends: 828 [2023-12-24 22:51:22,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1204 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=835, Invalid=4135, Unknown=0, NotChecked=0, Total=4970 [2023-12-24 22:51:22,502 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 196 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-24 22:51:22,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 369 Invalid, 786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-24 22:51:22,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2023-12-24 22:51:22,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 289. [2023-12-24 22:51:22,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 288 states have (on average 1.3263888888888888) internal successors, (382), 288 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:51:22,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 382 transitions. [2023-12-24 22:51:22,733 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 382 transitions. Word has length 34 [2023-12-24 22:51:22,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:51:22,733 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 382 transitions. [2023-12-24 22:51:22,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.65) internal successors, (66), 39 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:51:22,733 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 382 transitions. [2023-12-24 22:51:22,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-24 22:51:22,733 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:51:22,733 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:51:22,739 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 [2023-12-24 22:51:22,940 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 [2023-12-24 22:51:22,940 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:51:22,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:51:22,941 INFO L85 PathProgramCache]: Analyzing trace with hash -2114700064, now seen corresponding path program 13 times [2023-12-24 22:51:22,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:51:22,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [542546428] [2023-12-24 22:51:22,941 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-24 22:51:22,941 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 [2023-12-24 22:51:22,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:51:22,942 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) [2023-12-24 22:51:22,942 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 [2023-12-24 22:51:22,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 22:51:22,995 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-24 22:51:22,996 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:51:23,459 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 6 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:51:23,460 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:51:24,918 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 6 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:51:24,918 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:51:24,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [542546428] [2023-12-24 22:51:24,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [542546428] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:51:24,918 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:51:24,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 39 [2023-12-24 22:51:24,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959954974] [2023-12-24 22:51:24,918 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:51:24,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-12-24 22:51:24,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:51:24,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-12-24 22:51:24,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=293, Invalid=1267, Unknown=0, NotChecked=0, Total=1560 [2023-12-24 22:51:24,919 INFO L87 Difference]: Start difference. First operand 289 states and 382 transitions. Second operand has 40 states, 40 states have (on average 1.65) internal successors, (66), 39 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:51:29,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:51:29,086 INFO L93 Difference]: Finished difference Result 1030 states and 1295 transitions. [2023-12-24 22:51:29,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-12-24 22:51:29,086 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.65) internal successors, (66), 39 states have internal predecessors, (66), 0 states have call successors, (0), 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 34 [2023-12-24 22:51:29,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:51:29,088 INFO L225 Difference]: With dead ends: 1030 [2023-12-24 22:51:29,088 INFO L226 Difference]: Without dead ends: 1007 [2023-12-24 22:51:29,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1316 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=886, Invalid=4516, Unknown=0, NotChecked=0, Total=5402 [2023-12-24 22:51:29,089 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 253 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 861 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-24 22:51:29,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 441 Invalid, 871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 861 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-24 22:51:29,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1007 states. [2023-12-24 22:51:29,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1007 to 288. [2023-12-24 22:51:29,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 287 states have (on average 1.3275261324041812) internal successors, (381), 287 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:51:29,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 381 transitions. [2023-12-24 22:51:29,319 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 381 transitions. Word has length 34 [2023-12-24 22:51:29,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:51:29,319 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 381 transitions. [2023-12-24 22:51:29,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.65) internal successors, (66), 39 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:51:29,319 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 381 transitions. [2023-12-24 22:51:29,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-24 22:51:29,320 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:51:29,320 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:51:29,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2023-12-24 22:51:29,522 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 [2023-12-24 22:51:29,523 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:51:29,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:51:29,523 INFO L85 PathProgramCache]: Analyzing trace with hash -83100927, now seen corresponding path program 14 times [2023-12-24 22:51:29,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:51:29,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [434077196] [2023-12-24 22:51:29,523 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-24 22:51:29,523 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 [2023-12-24 22:51:29,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:51:29,524 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) [2023-12-24 22:51:29,525 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 [2023-12-24 22:51:29,573 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-24 22:51:29,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:51:29,575 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-24 22:51:29,582 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:51:30,057 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 6 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:51:30,058 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:51:31,561 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 6 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:51:31,561 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:51:31,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [434077196] [2023-12-24 22:51:31,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [434077196] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:51:31,561 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:51:31,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 39 [2023-12-24 22:51:31,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446145529] [2023-12-24 22:51:31,561 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:51:31,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-12-24 22:51:31,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:51:31,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-12-24 22:51:31,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=294, Invalid=1266, Unknown=0, NotChecked=0, Total=1560 [2023-12-24 22:51:31,562 INFO L87 Difference]: Start difference. First operand 288 states and 381 transitions. Second operand has 40 states, 40 states have (on average 1.65) internal successors, (66), 39 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:51:36,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:51:36,096 INFO L93 Difference]: Finished difference Result 1208 states and 1516 transitions. [2023-12-24 22:51:36,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-12-24 22:51:36,096 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.65) internal successors, (66), 39 states have internal predecessors, (66), 0 states have call successors, (0), 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 34 [2023-12-24 22:51:36,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:51:36,098 INFO L225 Difference]: With dead ends: 1208 [2023-12-24 22:51:36,098 INFO L226 Difference]: Without dead ends: 1185 [2023-12-24 22:51:36,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1332 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=914, Invalid=4636, Unknown=0, NotChecked=0, Total=5550 [2023-12-24 22:51:36,099 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 301 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 989 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-24 22:51:36,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [301 Valid, 547 Invalid, 998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 989 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-24 22:51:36,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1185 states. [2023-12-24 22:51:36,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1185 to 287. [2023-12-24 22:51:36,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 1.3286713286713288) internal successors, (380), 286 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:51:36,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 380 transitions. [2023-12-24 22:51:36,338 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 380 transitions. Word has length 34 [2023-12-24 22:51:36,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:51:36,338 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 380 transitions. [2023-12-24 22:51:36,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.65) internal successors, (66), 39 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:51:36,338 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 380 transitions. [2023-12-24 22:51:36,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-24 22:51:36,338 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:51:36,339 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:51:36,341 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2023-12-24 22:51:36,539 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 [2023-12-24 22:51:36,539 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:51:36,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:51:36,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1125944128, now seen corresponding path program 15 times [2023-12-24 22:51:36,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:51:36,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1848545715] [2023-12-24 22:51:36,540 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-24 22:51:36,540 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 [2023-12-24 22:51:36,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:51:36,541 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) [2023-12-24 22:51:36,542 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 [2023-12-24 22:51:36,585 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-12-24 22:51:36,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:51:36,588 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-24 22:51:36,589 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:51:37,050 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 6 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:51:37,051 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:51:38,511 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 6 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:51:38,511 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:51:38,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1848545715] [2023-12-24 22:51:38,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1848545715] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:51:38,511 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:51:38,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 39 [2023-12-24 22:51:38,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956985725] [2023-12-24 22:51:38,511 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:51:38,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-12-24 22:51:38,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:51:38,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-12-24 22:51:38,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=295, Invalid=1265, Unknown=0, NotChecked=0, Total=1560 [2023-12-24 22:51:38,512 INFO L87 Difference]: Start difference. First operand 287 states and 380 transitions. Second operand has 40 states, 40 states have (on average 1.65) internal successors, (66), 39 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:51:42,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:51:42,708 INFO L93 Difference]: Finished difference Result 1385 states and 1736 transitions. [2023-12-24 22:51:42,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-12-24 22:51:42,709 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.65) internal successors, (66), 39 states have internal predecessors, (66), 0 states have call successors, (0), 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 34 [2023-12-24 22:51:42,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:51:42,711 INFO L225 Difference]: With dead ends: 1385 [2023-12-24 22:51:42,711 INFO L226 Difference]: Without dead ends: 1362 [2023-12-24 22:51:42,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1057 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=832, Invalid=3860, Unknown=0, NotChecked=0, Total=4692 [2023-12-24 22:51:42,712 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 255 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 1000 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 1010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-24 22:51:42,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 670 Invalid, 1010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1000 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-24 22:51:42,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1362 states. [2023-12-24 22:51:42,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1362 to 286. [2023-12-24 22:51:42,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 285 states have (on average 1.3298245614035087) internal successors, (379), 285 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:51:42,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 379 transitions. [2023-12-24 22:51:42,955 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 379 transitions. Word has length 34 [2023-12-24 22:51:42,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:51:42,955 INFO L495 AbstractCegarLoop]: Abstraction has 286 states and 379 transitions. [2023-12-24 22:51:42,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.65) internal successors, (66), 39 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:51:42,956 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 379 transitions. [2023-12-24 22:51:42,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-24 22:51:42,956 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:51:42,956 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:51:42,964 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2023-12-24 22:51:43,158 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 [2023-12-24 22:51:43,159 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:51:43,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:51:43,159 INFO L85 PathProgramCache]: Analyzing trace with hash -882489567, now seen corresponding path program 6 times [2023-12-24 22:51:43,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:51:43,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [888227231] [2023-12-24 22:51:43,159 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-24 22:51:43,159 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 [2023-12-24 22:51:43,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:51:43,160 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) [2023-12-24 22:51:43,161 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 [2023-12-24 22:51:43,203 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2023-12-24 22:51:43,203 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:51:43,205 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-24 22:51:43,206 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:51:43,873 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 6 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:51:43,873 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:51:45,807 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 17 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:51:45,807 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:51:45,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [888227231] [2023-12-24 22:51:45,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [888227231] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:51:45,807 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:51:45,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 43 [2023-12-24 22:51:45,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540668644] [2023-12-24 22:51:45,808 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:51:45,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-12-24 22:51:45,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:51:45,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-12-24 22:51:45,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=356, Invalid=1536, Unknown=0, NotChecked=0, Total=1892 [2023-12-24 22:51:45,809 INFO L87 Difference]: Start difference. First operand 286 states and 379 transitions. Second operand has 44 states, 44 states have (on average 1.5) internal successors, (66), 43 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:51:50,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:51:50,030 INFO L93 Difference]: Finished difference Result 1560 states and 1953 transitions. [2023-12-24 22:51:50,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-12-24 22:51:50,030 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.5) internal successors, (66), 43 states have internal predecessors, (66), 0 states have call successors, (0), 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 34 [2023-12-24 22:51:50,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:51:50,033 INFO L225 Difference]: With dead ends: 1560 [2023-12-24 22:51:50,033 INFO L226 Difference]: Without dead ends: 1537 [2023-12-24 22:51:50,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1000 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=816, Invalid=3606, Unknown=0, NotChecked=0, Total=4422 [2023-12-24 22:51:50,034 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 344 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 1043 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 805 SdHoareTripleChecker+Invalid, 1051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1043 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-24 22:51:50,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 805 Invalid, 1051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1043 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-24 22:51:50,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1537 states. [2023-12-24 22:51:50,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1537 to 284. [2023-12-24 22:51:50,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 283 states have (on average 1.3286219081272084) internal successors, (376), 283 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:51:50,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 376 transitions. [2023-12-24 22:51:50,295 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 376 transitions. Word has length 34 [2023-12-24 22:51:50,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:51:50,295 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 376 transitions. [2023-12-24 22:51:50,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.5) internal successors, (66), 43 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:51:50,295 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 376 transitions. [2023-12-24 22:51:50,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-24 22:51:50,296 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:51:50,296 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:51:50,302 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 [2023-12-24 22:51:50,498 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 [2023-12-24 22:51:50,499 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:51:50,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:51:50,499 INFO L85 PathProgramCache]: Analyzing trace with hash -650158179, now seen corresponding path program 10 times [2023-12-24 22:51:50,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:51:50,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2011136652] [2023-12-24 22:51:50,499 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-24 22:51:50,499 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 [2023-12-24 22:51:50,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:51:50,500 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) [2023-12-24 22:51:50,501 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 [2023-12-24 22:51:50,546 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-24 22:51:50,547 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:51:50,549 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-24 22:51:50,550 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:51:51,425 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 7 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:51:51,425 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:51:56,118 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 38 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:51:56,118 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:51:56,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2011136652] [2023-12-24 22:51:56,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2011136652] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:51:56,118 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:51:56,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 53 [2023-12-24 22:51:56,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810616703] [2023-12-24 22:51:56,119 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:51:56,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2023-12-24 22:51:56,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:51:56,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2023-12-24 22:51:56,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=529, Invalid=2333, Unknown=0, NotChecked=0, Total=2862 [2023-12-24 22:51:56,120 INFO L87 Difference]: Start difference. First operand 284 states and 376 transitions. Second operand has 54 states, 54 states have (on average 1.3703703703703705) internal successors, (74), 53 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:51:58,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:51:58,613 INFO L93 Difference]: Finished difference Result 491 states and 625 transitions. [2023-12-24 22:51:58,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-24 22:51:58,613 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.3703703703703705) internal successors, (74), 53 states have internal predecessors, (74), 0 states have call successors, (0), 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 38 [2023-12-24 22:51:58,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:51:58,614 INFO L225 Difference]: With dead ends: 491 [2023-12-24 22:51:58,614 INFO L226 Difference]: Without dead ends: 465 [2023-12-24 22:51:58,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1592 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=1190, Invalid=4972, Unknown=0, NotChecked=0, Total=6162 [2023-12-24 22:51:58,615 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 88 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-24 22:51:58,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 241 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-24 22:51:58,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2023-12-24 22:51:58,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 291. [2023-12-24 22:51:58,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 290 states have (on average 1.3206896551724139) internal successors, (383), 290 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:51:58,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 383 transitions. [2023-12-24 22:51:58,899 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 383 transitions. Word has length 38 [2023-12-24 22:51:58,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:51:58,899 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 383 transitions. [2023-12-24 22:51:58,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 1.3703703703703705) internal successors, (74), 53 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:51:58,899 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 383 transitions. [2023-12-24 22:51:58,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-24 22:51:58,899 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:51:58,899 INFO L195 NwaCegarLoop]: trace histogram [25, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:51:58,905 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2023-12-24 22:51:59,103 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 [2023-12-24 22:51:59,103 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:51:59,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:51:59,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1367455971, now seen corresponding path program 11 times [2023-12-24 22:51:59,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:51:59,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1887493562] [2023-12-24 22:51:59,104 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-24 22:51:59,104 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 [2023-12-24 22:51:59,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:51:59,105 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) [2023-12-24 22:51:59,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2023-12-24 22:51:59,169 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2023-12-24 22:51:59,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:51:59,172 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-24 22:51:59,174 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:51:59,480 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 0 proven. 327 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:51:59,480 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:52:01,536 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 0 proven. 327 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:52:01,536 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:52:01,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1887493562] [2023-12-24 22:52:01,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1887493562] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:52:01,536 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:52:01,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 31] total 59 [2023-12-24 22:52:01,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628895824] [2023-12-24 22:52:01,536 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:52:01,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2023-12-24 22:52:01,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:52:01,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2023-12-24 22:52:01,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=949, Invalid=2591, Unknown=0, NotChecked=0, Total=3540 [2023-12-24 22:52:01,537 INFO L87 Difference]: Start difference. First operand 291 states and 383 transitions. Second operand has 60 states, 60 states have (on average 1.25) internal successors, (75), 59 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:52:43,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:52:43,375 INFO L93 Difference]: Finished difference Result 619 states and 745 transitions. [2023-12-24 22:52:43,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 186 states. [2023-12-24 22:52:43,375 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 1.25) internal successors, (75), 59 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2023-12-24 22:52:43,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:52:43,376 INFO L225 Difference]: With dead ends: 619 [2023-12-24 22:52:43,376 INFO L226 Difference]: Without dead ends: 614 [2023-12-24 22:52:43,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14949 ImplicationChecksByTransitivity, 40.3s TimeCoverageRelationStatistics Valid=12266, Invalid=32044, Unknown=0, NotChecked=0, Total=44310 [2023-12-24 22:52:43,379 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 3741 mSDsluCounter, 2643 mSDsCounter, 0 mSdLazyCounter, 3638 mSolverCounterSat, 925 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3741 SdHoareTripleChecker+Valid, 2737 SdHoareTripleChecker+Invalid, 4563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 925 IncrementalHoareTripleChecker+Valid, 3638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-24 22:52:43,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3741 Valid, 2737 Invalid, 4563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [925 Valid, 3638 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-24 22:52:43,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2023-12-24 22:52:43,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 286. [2023-12-24 22:52:43,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 285 states have (on average 1.368421052631579) internal successors, (390), 285 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:52:43,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 390 transitions. [2023-12-24 22:52:43,732 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 390 transitions. Word has length 38 [2023-12-24 22:52:43,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:52:43,732 INFO L495 AbstractCegarLoop]: Abstraction has 286 states and 390 transitions. [2023-12-24 22:52:43,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 1.25) internal successors, (75), 59 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:52:43,732 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 390 transitions. [2023-12-24 22:52:43,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-24 22:52:43,733 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:52:43,733 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:52:43,738 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2023-12-24 22:52:43,933 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 [2023-12-24 22:52:43,933 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:52:43,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:52:43,934 INFO L85 PathProgramCache]: Analyzing trace with hash -878925220, now seen corresponding path program 16 times [2023-12-24 22:52:43,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:52:43,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [891919309] [2023-12-24 22:52:43,934 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-24 22:52:43,934 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 [2023-12-24 22:52:43,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:52:43,935 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) [2023-12-24 22:52:43,935 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 [2023-12-24 22:52:43,989 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-24 22:52:43,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:52:43,991 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-24 22:52:43,992 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:52:44,543 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 7 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:52:44,543 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:52:46,364 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 7 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:52:46,364 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:52:46,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [891919309] [2023-12-24 22:52:46,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [891919309] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:52:46,365 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:52:46,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 43 [2023-12-24 22:52:46,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140855872] [2023-12-24 22:52:46,365 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:52:46,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-12-24 22:52:46,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:52:46,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-12-24 22:52:46,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=342, Invalid=1550, Unknown=0, NotChecked=0, Total=1892 [2023-12-24 22:52:46,366 INFO L87 Difference]: Start difference. First operand 286 states and 390 transitions. Second operand has 44 states, 44 states have (on average 1.6818181818181819) internal successors, (74), 43 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:52:49,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:52:49,827 INFO L93 Difference]: Finished difference Result 632 states and 832 transitions. [2023-12-24 22:52:49,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-24 22:52:49,827 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.6818181818181819) internal successors, (74), 43 states have internal predecessors, (74), 0 states have call successors, (0), 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 38 [2023-12-24 22:52:49,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:52:49,828 INFO L225 Difference]: With dead ends: 632 [2023-12-24 22:52:49,828 INFO L226 Difference]: Without dead ends: 606 [2023-12-24 22:52:49,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1207 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=845, Invalid=4267, Unknown=0, NotChecked=0, Total=5112 [2023-12-24 22:52:49,829 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 141 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 781 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-24 22:52:49,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 342 Invalid, 788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 781 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-24 22:52:49,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2023-12-24 22:52:50,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 285. [2023-12-24 22:52:50,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 284 states have (on average 1.369718309859155) internal successors, (389), 284 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:52:50,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 389 transitions. [2023-12-24 22:52:50,171 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 389 transitions. Word has length 38 [2023-12-24 22:52:50,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:52:50,171 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 389 transitions. [2023-12-24 22:52:50,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.6818181818181819) internal successors, (74), 43 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:52:50,171 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 389 transitions. [2023-12-24 22:52:50,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-24 22:52:50,172 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:52:50,172 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:52:50,177 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 [2023-12-24 22:52:50,372 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 [2023-12-24 22:52:50,372 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:52:50,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:52:50,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1994683459, now seen corresponding path program 17 times [2023-12-24 22:52:50,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:52:50,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1090981363] [2023-12-24 22:52:50,373 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-24 22:52:50,373 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 [2023-12-24 22:52:50,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:52:50,374 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) [2023-12-24 22:52:50,375 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 [2023-12-24 22:52:50,423 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2023-12-24 22:52:50,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:52:50,425 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-24 22:52:50,426 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:52:50,994 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 7 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:52:50,994 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:52:52,701 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 7 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:52:52,701 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:52:52,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1090981363] [2023-12-24 22:52:52,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1090981363] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:52:52,701 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:52:52,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 43 [2023-12-24 22:52:52,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94321221] [2023-12-24 22:52:52,701 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:52:52,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-12-24 22:52:52,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:52:52,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-12-24 22:52:52,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=343, Invalid=1549, Unknown=0, NotChecked=0, Total=1892 [2023-12-24 22:52:52,702 INFO L87 Difference]: Start difference. First operand 285 states and 389 transitions. Second operand has 44 states, 44 states have (on average 1.6818181818181819) internal successors, (74), 43 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:52:57,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:52:57,432 INFO L93 Difference]: Finished difference Result 794 states and 1042 transitions. [2023-12-24 22:52:57,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-12-24 22:52:57,432 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.6818181818181819) internal successors, (74), 43 states have internal predecessors, (74), 0 states have call successors, (0), 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 38 [2023-12-24 22:52:57,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:52:57,434 INFO L225 Difference]: With dead ends: 794 [2023-12-24 22:52:57,434 INFO L226 Difference]: Without dead ends: 768 [2023-12-24 22:52:57,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1517 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=976, Invalid=5186, Unknown=0, NotChecked=0, Total=6162 [2023-12-24 22:52:57,435 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 230 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 1057 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 1069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-24 22:52:57,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 447 Invalid, 1069 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1057 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-24 22:52:57,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2023-12-24 22:52:57,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 284. [2023-12-24 22:52:57,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 283 states have (on average 1.3710247349823321) internal successors, (388), 283 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:52:57,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 388 transitions. [2023-12-24 22:52:57,777 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 388 transitions. Word has length 38 [2023-12-24 22:52:57,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:52:57,777 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 388 transitions. [2023-12-24 22:52:57,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.6818181818181819) internal successors, (74), 43 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:52:57,777 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 388 transitions. [2023-12-24 22:52:57,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-24 22:52:57,778 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:52:57,778 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:52:57,781 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 [2023-12-24 22:52:57,981 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 [2023-12-24 22:52:57,981 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:52:57,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:52:57,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1753580996, now seen corresponding path program 18 times [2023-12-24 22:52:57,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:52:57,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [697206591] [2023-12-24 22:52:57,981 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-24 22:52:57,982 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 [2023-12-24 22:52:57,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:52:57,983 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) [2023-12-24 22:52:57,984 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 [2023-12-24 22:52:58,038 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2023-12-24 22:52:58,038 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:52:58,040 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-24 22:52:58,041 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:52:58,593 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 7 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:52:58,593 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:53:00,302 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 7 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:53:00,302 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:53:00,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [697206591] [2023-12-24 22:53:00,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [697206591] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:53:00,302 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:53:00,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 43 [2023-12-24 22:53:00,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193931849] [2023-12-24 22:53:00,302 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:53:00,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-12-24 22:53:00,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:53:00,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-12-24 22:53:00,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=344, Invalid=1548, Unknown=0, NotChecked=0, Total=1892 [2023-12-24 22:53:00,303 INFO L87 Difference]: Start difference. First operand 284 states and 388 transitions. Second operand has 44 states, 44 states have (on average 1.6818181818181819) internal successors, (74), 43 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:53:05,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:53:05,870 INFO L93 Difference]: Finished difference Result 955 states and 1251 transitions. [2023-12-24 22:53:05,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-12-24 22:53:05,870 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.6818181818181819) internal successors, (74), 43 states have internal predecessors, (74), 0 states have call successors, (0), 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 38 [2023-12-24 22:53:05,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:53:05,872 INFO L225 Difference]: With dead ends: 955 [2023-12-24 22:53:05,872 INFO L226 Difference]: Without dead ends: 929 [2023-12-24 22:53:05,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1696 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1043, Invalid=5763, Unknown=0, NotChecked=0, Total=6806 [2023-12-24 22:53:05,873 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 277 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 1148 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 1162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-24 22:53:05,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 539 Invalid, 1162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1148 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-24 22:53:05,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 929 states. [2023-12-24 22:53:06,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 929 to 283. [2023-12-24 22:53:06,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 282 states have (on average 1.372340425531915) internal successors, (387), 282 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:53:06,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 387 transitions. [2023-12-24 22:53:06,248 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 387 transitions. Word has length 38 [2023-12-24 22:53:06,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:53:06,248 INFO L495 AbstractCegarLoop]: Abstraction has 283 states and 387 transitions. [2023-12-24 22:53:06,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.6818181818181819) internal successors, (74), 43 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:53:06,248 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 387 transitions. [2023-12-24 22:53:06,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-24 22:53:06,249 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:53:06,249 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:53:06,255 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2023-12-24 22:53:06,451 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 [2023-12-24 22:53:06,451 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:53:06,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:53:06,452 INFO L85 PathProgramCache]: Analyzing trace with hash 609501149, now seen corresponding path program 19 times [2023-12-24 22:53:06,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:53:06,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1990942410] [2023-12-24 22:53:06,452 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-24 22:53:06,452 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 [2023-12-24 22:53:06,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:53:06,453 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) [2023-12-24 22:53:06,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2023-12-24 22:53:06,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 22:53:06,511 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-24 22:53:06,512 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:53:07,055 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 7 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:53:07,055 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:53:08,834 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 7 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:53:08,834 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:53:08,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1990942410] [2023-12-24 22:53:08,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1990942410] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:53:08,834 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:53:08,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 43 [2023-12-24 22:53:08,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354443930] [2023-12-24 22:53:08,834 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:53:08,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-12-24 22:53:08,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:53:08,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-12-24 22:53:08,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=345, Invalid=1547, Unknown=0, NotChecked=0, Total=1892 [2023-12-24 22:53:08,835 INFO L87 Difference]: Start difference. First operand 283 states and 387 transitions. Second operand has 44 states, 44 states have (on average 1.6818181818181819) internal successors, (74), 43 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:53:15,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:53:15,230 INFO L93 Difference]: Finished difference Result 1115 states and 1459 transitions. [2023-12-24 22:53:15,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-12-24 22:53:15,231 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.6818181818181819) internal successors, (74), 43 states have internal predecessors, (74), 0 states have call successors, (0), 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 38 [2023-12-24 22:53:15,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:53:15,233 INFO L225 Difference]: With dead ends: 1115 [2023-12-24 22:53:15,233 INFO L226 Difference]: Without dead ends: 1089 [2023-12-24 22:53:15,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1771 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=1089, Invalid=6051, Unknown=0, NotChecked=0, Total=7140 [2023-12-24 22:53:15,234 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 332 mSDsluCounter, 646 mSDsCounter, 0 mSdLazyCounter, 1301 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 1315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-24 22:53:15,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 685 Invalid, 1315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1301 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-24 22:53:15,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1089 states. [2023-12-24 22:53:15,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1089 to 282. [2023-12-24 22:53:15,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 281 states have (on average 1.3736654804270463) internal successors, (386), 281 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:53:15,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 386 transitions. [2023-12-24 22:53:15,594 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 386 transitions. Word has length 38 [2023-12-24 22:53:15,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:53:15,594 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 386 transitions. [2023-12-24 22:53:15,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.6818181818181819) internal successors, (74), 43 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:53:15,594 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 386 transitions. [2023-12-24 22:53:15,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-24 22:53:15,595 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:53:15,595 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:53:15,597 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2023-12-24 22:53:15,795 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 [2023-12-24 22:53:15,795 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:53:15,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:53:15,795 INFO L85 PathProgramCache]: Analyzing trace with hash -699743716, now seen corresponding path program 20 times [2023-12-24 22:53:15,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:53:15,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [853396168] [2023-12-24 22:53:15,795 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-24 22:53:15,796 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 [2023-12-24 22:53:15,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:53:15,796 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) [2023-12-24 22:53:15,797 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 [2023-12-24 22:53:15,846 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-24 22:53:15,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:53:15,849 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-24 22:53:15,849 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:53:16,393 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 7 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:53:16,393 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:53:18,164 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 7 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:53:18,164 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:53:18,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [853396168] [2023-12-24 22:53:18,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [853396168] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:53:18,164 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:53:18,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 43 [2023-12-24 22:53:18,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53117147] [2023-12-24 22:53:18,164 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:53:18,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-12-24 22:53:18,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:53:18,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-12-24 22:53:18,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=346, Invalid=1546, Unknown=0, NotChecked=0, Total=1892 [2023-12-24 22:53:18,165 INFO L87 Difference]: Start difference. First operand 282 states and 386 transitions. Second operand has 44 states, 44 states have (on average 1.6818181818181819) internal successors, (74), 43 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:53:24,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:53:24,915 INFO L93 Difference]: Finished difference Result 1274 states and 1666 transitions. [2023-12-24 22:53:24,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-12-24 22:53:24,916 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.6818181818181819) internal successors, (74), 43 states have internal predecessors, (74), 0 states have call successors, (0), 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 38 [2023-12-24 22:53:24,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:53:24,918 INFO L225 Difference]: With dead ends: 1274 [2023-12-24 22:53:24,918 INFO L226 Difference]: Without dead ends: 1248 [2023-12-24 22:53:24,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1733 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=1108, Invalid=6032, Unknown=0, NotChecked=0, Total=7140 [2023-12-24 22:53:24,919 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 301 mSDsluCounter, 726 mSDsCounter, 0 mSdLazyCounter, 1312 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 771 SdHoareTripleChecker+Invalid, 1323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-24 22:53:24,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [301 Valid, 771 Invalid, 1323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1312 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-24 22:53:24,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1248 states. [2023-12-24 22:53:25,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1248 to 281. [2023-12-24 22:53:25,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 280 states have (on average 1.375) internal successors, (385), 280 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:53:25,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 385 transitions. [2023-12-24 22:53:25,286 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 385 transitions. Word has length 38 [2023-12-24 22:53:25,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:53:25,286 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 385 transitions. [2023-12-24 22:53:25,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.6818181818181819) internal successors, (74), 43 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:53:25,286 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 385 transitions. [2023-12-24 22:53:25,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-24 22:53:25,286 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:53:25,287 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:53:25,292 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2023-12-24 22:53:25,487 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 [2023-12-24 22:53:25,487 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:53:25,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:53:25,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1751874557, now seen corresponding path program 21 times [2023-12-24 22:53:25,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:53:25,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [5973547] [2023-12-24 22:53:25,488 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-24 22:53:25,488 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 [2023-12-24 22:53:25,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:53:25,488 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) [2023-12-24 22:53:25,489 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 (44)] Waiting until timeout for monitored process [2023-12-24 22:53:25,539 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-12-24 22:53:25,540 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:53:25,542 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-24 22:53:25,543 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:53:26,101 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 7 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:53:26,101 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:53:27,878 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 7 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:53:27,878 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:53:27,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [5973547] [2023-12-24 22:53:27,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [5973547] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:53:27,879 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:53:27,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 43 [2023-12-24 22:53:27,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547682878] [2023-12-24 22:53:27,879 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:53:27,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-12-24 22:53:27,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:53:27,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-12-24 22:53:27,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=347, Invalid=1545, Unknown=0, NotChecked=0, Total=1892 [2023-12-24 22:53:27,882 INFO L87 Difference]: Start difference. First operand 281 states and 385 transitions. Second operand has 44 states, 44 states have (on average 1.6818181818181819) internal successors, (74), 43 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:53:34,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:53:34,095 INFO L93 Difference]: Finished difference Result 1432 states and 1872 transitions. [2023-12-24 22:53:34,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-12-24 22:53:34,095 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.6818181818181819) internal successors, (74), 43 states have internal predecessors, (74), 0 states have call successors, (0), 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 38 [2023-12-24 22:53:34,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:53:34,098 INFO L225 Difference]: With dead ends: 1432 [2023-12-24 22:53:34,098 INFO L226 Difference]: Without dead ends: 1406 [2023-12-24 22:53:34,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1320 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=992, Invalid=4860, Unknown=0, NotChecked=0, Total=5852 [2023-12-24 22:53:34,098 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 327 mSDsluCounter, 941 mSDsCounter, 0 mSdLazyCounter, 1360 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 992 SdHoareTripleChecker+Invalid, 1372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-24 22:53:34,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [327 Valid, 992 Invalid, 1372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1360 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-24 22:53:34,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1406 states. [2023-12-24 22:53:34,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1406 to 280. [2023-12-24 22:53:34,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 279 states have (on average 1.3763440860215055) internal successors, (384), 279 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:53:34,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 384 transitions. [2023-12-24 22:53:34,479 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 384 transitions. Word has length 38 [2023-12-24 22:53:34,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:53:34,479 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 384 transitions. [2023-12-24 22:53:34,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.6818181818181819) internal successors, (74), 43 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:53:34,479 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 384 transitions. [2023-12-24 22:53:34,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-24 22:53:34,480 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:53:34,480 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:53:34,483 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2023-12-24 22:53:34,683 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 [2023-12-24 22:53:34,683 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:53:34,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:53:34,683 INFO L85 PathProgramCache]: Analyzing trace with hash 306938364, now seen corresponding path program 7 times [2023-12-24 22:53:34,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:53:34,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1559381048] [2023-12-24 22:53:34,683 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-24 22:53:34,683 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 22:53:34,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:53:34,684 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) [2023-12-24 22:53:34,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2023-12-24 22:53:34,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 22:53:34,729 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-24 22:53:34,730 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:53:35,527 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 7 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:53:35,527 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:53:40,252 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 26 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:53:40,252 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:53:40,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1559381048] [2023-12-24 22:53:40,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1559381048] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:53:40,253 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:53:40,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 51 [2023-12-24 22:53:40,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217575293] [2023-12-24 22:53:40,253 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:53:40,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-12-24 22:53:40,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:53:40,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-12-24 22:53:40,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=487, Invalid=2165, Unknown=0, NotChecked=0, Total=2652 [2023-12-24 22:53:40,254 INFO L87 Difference]: Start difference. First operand 280 states and 384 transitions. Second operand has 52 states, 52 states have (on average 1.4230769230769231) internal successors, (74), 51 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:53:46,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:53:46,896 INFO L93 Difference]: Finished difference Result 1588 states and 2075 transitions. [2023-12-24 22:53:46,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-12-24 22:53:46,896 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.4230769230769231) internal successors, (74), 51 states have internal predecessors, (74), 0 states have call successors, (0), 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 38 [2023-12-24 22:53:46,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:53:46,900 INFO L225 Difference]: With dead ends: 1588 [2023-12-24 22:53:46,900 INFO L226 Difference]: Without dead ends: 1562 [2023-12-24 22:53:46,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1497 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=1111, Invalid=5209, Unknown=0, NotChecked=0, Total=6320 [2023-12-24 22:53:46,901 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 497 mSDsluCounter, 891 mSDsCounter, 0 mSdLazyCounter, 1241 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 497 SdHoareTripleChecker+Valid, 946 SdHoareTripleChecker+Invalid, 1250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-24 22:53:46,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [497 Valid, 946 Invalid, 1250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1241 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-24 22:53:46,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1562 states. [2023-12-24 22:53:47,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1562 to 278. [2023-12-24 22:53:47,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 277 states have (on average 1.3754512635379061) internal successors, (381), 277 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:53:47,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 381 transitions. [2023-12-24 22:53:47,302 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 381 transitions. Word has length 38 [2023-12-24 22:53:47,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:53:47,302 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 381 transitions. [2023-12-24 22:53:47,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.4230769230769231) internal successors, (74), 51 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:53:47,303 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 381 transitions. [2023-12-24 22:53:47,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-24 22:53:47,303 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:53:47,303 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:53:47,319 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 (45)] Ended with exit code 0 [2023-12-24 22:53:47,519 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 [2023-12-24 22:53:47,519 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:53:47,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:53:47,519 INFO L85 PathProgramCache]: Analyzing trace with hash -384563647, now seen corresponding path program 12 times [2023-12-24 22:53:47,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:53:47,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1040065287] [2023-12-24 22:53:47,519 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-24 22:53:47,520 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 [2023-12-24 22:53:47,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:53:47,520 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) [2023-12-24 22:53:47,521 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 [2023-12-24 22:53:47,574 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2023-12-24 22:53:47,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:53:47,576 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-24 22:53:47,577 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:53:48,343 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 8 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:53:48,343 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:53:50,694 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 9 proven. 127 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:53:50,694 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:53:50,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1040065287] [2023-12-24 22:53:50,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1040065287] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:53:50,694 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:53:50,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 49 [2023-12-24 22:53:50,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978105350] [2023-12-24 22:53:50,694 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:53:50,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-12-24 22:53:50,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:53:50,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-12-24 22:53:50,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=430, Invalid=2020, Unknown=0, NotChecked=0, Total=2450 [2023-12-24 22:53:50,695 INFO L87 Difference]: Start difference. First operand 278 states and 381 transitions. Second operand has 50 states, 50 states have (on average 1.64) internal successors, (82), 49 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:53:53,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:53:53,361 INFO L93 Difference]: Finished difference Result 470 states and 620 transitions. [2023-12-24 22:53:53,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-24 22:53:53,362 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.64) internal successors, (82), 49 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2023-12-24 22:53:53,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:53:53,363 INFO L225 Difference]: With dead ends: 470 [2023-12-24 22:53:53,363 INFO L226 Difference]: Without dead ends: 441 [2023-12-24 22:53:53,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1184 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=991, Invalid=4265, Unknown=0, NotChecked=0, Total=5256 [2023-12-24 22:53:53,363 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 83 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 701 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-24 22:53:53,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 289 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 701 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-24 22:53:53,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2023-12-24 22:53:53,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 286. [2023-12-24 22:53:53,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 285 states have (on average 1.3649122807017544) internal successors, (389), 285 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:53:53,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 389 transitions. [2023-12-24 22:53:53,788 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 389 transitions. Word has length 42 [2023-12-24 22:53:53,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:53:53,788 INFO L495 AbstractCegarLoop]: Abstraction has 286 states and 389 transitions. [2023-12-24 22:53:53,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.64) internal successors, (82), 49 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:53:53,788 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 389 transitions. [2023-12-24 22:53:53,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-24 22:53:53,789 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:53:53,789 INFO L195 NwaCegarLoop]: trace histogram [26, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:53:53,794 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 [2023-12-24 22:53:53,991 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 [2023-12-24 22:53:53,991 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:53:53,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:53:53,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1940787519, now seen corresponding path program 13 times [2023-12-24 22:53:53,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:53:53,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [619501633] [2023-12-24 22:53:53,992 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-24 22:53:53,992 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 [2023-12-24 22:53:53,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:53:53,993 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) [2023-12-24 22:53:53,994 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 [2023-12-24 22:53:54,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 22:53:54,064 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-24 22:53:54,065 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:53:54,376 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 0 proven. 358 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:53:54,376 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:53:55,694 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 0 proven. 358 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:53:55,694 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:53:55,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [619501633] [2023-12-24 22:53:55,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [619501633] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:53:55,694 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:53:55,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 57 [2023-12-24 22:53:55,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512378262] [2023-12-24 22:53:55,694 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:53:55,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-12-24 22:53:55,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:53:55,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-12-24 22:53:55,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=837, Invalid=2469, Unknown=0, NotChecked=0, Total=3306 [2023-12-24 22:53:55,695 INFO L87 Difference]: Start difference. First operand 286 states and 389 transitions. Second operand has 58 states, 58 states have (on average 1.4310344827586208) internal successors, (83), 57 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:59:47,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:59:47,891 INFO L93 Difference]: Finished difference Result 2128 states and 2282 transitions. [2023-12-24 22:59:47,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 813 states. [2023-12-24 22:59:47,892 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 1.4310344827586208) internal successors, (83), 57 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2023-12-24 22:59:47,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:59:47,896 INFO L225 Difference]: With dead ends: 2128 [2023-12-24 22:59:47,896 INFO L226 Difference]: Without dead ends: 2126 [2023-12-24 22:59:47,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 838 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 812 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316968 ImplicationChecksByTransitivity, 342.7s TimeCoverageRelationStatistics Valid=113762, Invalid=548020, Unknown=0, NotChecked=0, Total=661782 [2023-12-24 22:59:47,924 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 15960 mSDsluCounter, 2729 mSDsCounter, 0 mSdLazyCounter, 3721 mSolverCounterSat, 4760 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15960 SdHoareTripleChecker+Valid, 2828 SdHoareTripleChecker+Invalid, 8481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4760 IncrementalHoareTripleChecker+Valid, 3721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2023-12-24 22:59:47,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15960 Valid, 2828 Invalid, 8481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4760 Valid, 3721 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2023-12-24 22:59:47,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2126 states. [2023-12-24 22:59:48,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2126 to 359. [2023-12-24 22:59:48,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 358 states have (on average 1.2905027932960893) internal successors, (462), 358 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:59:48,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 462 transitions. [2023-12-24 22:59:48,569 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 462 transitions. Word has length 42 [2023-12-24 22:59:48,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:59:48,569 INFO L495 AbstractCegarLoop]: Abstraction has 359 states and 462 transitions. [2023-12-24 22:59:48,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 1.4310344827586208) internal successors, (83), 57 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:59:48,569 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 462 transitions. [2023-12-24 22:59:48,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-24 22:59:48,570 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:59:48,570 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:59:48,574 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 (47)] Ended with exit code 0 [2023-12-24 22:59:48,773 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 [2023-12-24 22:59:48,774 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:59:48,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:59:48,775 INFO L85 PathProgramCache]: Analyzing trace with hash -2109744768, now seen corresponding path program 22 times [2023-12-24 22:59:48,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:59:48,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1012161628] [2023-12-24 22:59:48,775 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-24 22:59:48,775 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 [2023-12-24 22:59:48,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:59:48,776 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) [2023-12-24 22:59:48,777 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 [2023-12-24 22:59:48,841 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-24 22:59:48,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:59:48,844 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-24 22:59:48,845 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:59:49,501 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 8 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:59:49,501 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 22:59:51,848 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 8 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:59:51,848 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 22:59:51,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1012161628] [2023-12-24 22:59:51,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1012161628] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 22:59:51,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 22:59:51,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 47 [2023-12-24 22:59:51,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562323297] [2023-12-24 22:59:51,849 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 22:59:51,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-24 22:59:51,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 22:59:51,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-24 22:59:51,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=397, Invalid=1859, Unknown=0, NotChecked=0, Total=2256 [2023-12-24 22:59:51,850 INFO L87 Difference]: Start difference. First operand 359 states and 462 transitions. Second operand has 48 states, 48 states have (on average 1.7083333333333333) internal successors, (82), 47 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:59:56,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 22:59:56,825 INFO L93 Difference]: Finished difference Result 851 states and 1048 transitions. [2023-12-24 22:59:56,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-12-24 22:59:56,825 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.7083333333333333) internal successors, (82), 47 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2023-12-24 22:59:56,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 22:59:56,827 INFO L225 Difference]: With dead ends: 851 [2023-12-24 22:59:56,827 INFO L226 Difference]: Without dead ends: 822 [2023-12-24 22:59:56,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1470 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=975, Invalid=5187, Unknown=0, NotChecked=0, Total=6162 [2023-12-24 22:59:56,828 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 153 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 981 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-24 22:59:56,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 409 Invalid, 989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 981 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-24 22:59:56,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2023-12-24 22:59:57,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 358. [2023-12-24 22:59:57,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 357 states have (on average 1.2913165266106443) internal successors, (461), 357 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:59:57,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 461 transitions. [2023-12-24 22:59:57,458 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 461 transitions. Word has length 42 [2023-12-24 22:59:57,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 22:59:57,458 INFO L495 AbstractCegarLoop]: Abstraction has 358 states and 461 transitions. [2023-12-24 22:59:57,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.7083333333333333) internal successors, (82), 47 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 22:59:57,458 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 461 transitions. [2023-12-24 22:59:57,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-24 22:59:57,459 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 22:59:57,459 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 22:59:57,464 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (48)] Forceful destruction successful, exit code 0 [2023-12-24 22:59:57,659 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 [2023-12-24 22:59:57,659 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 22:59:57,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 22:59:57,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1195564447, now seen corresponding path program 23 times [2023-12-24 22:59:57,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 22:59:57,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [968667916] [2023-12-24 22:59:57,660 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-24 22:59:57,660 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 [2023-12-24 22:59:57,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 22:59:57,661 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) [2023-12-24 22:59:57,664 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 [2023-12-24 22:59:57,717 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2023-12-24 22:59:57,717 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 22:59:57,720 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-24 22:59:57,721 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 22:59:58,428 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 8 proven. 116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 22:59:58,428 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:00:00,819 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 8 proven. 116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 23:00:00,819 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:00:00,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [968667916] [2023-12-24 23:00:00,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [968667916] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:00:00,820 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:00:00,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 47 [2023-12-24 23:00:00,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958627573] [2023-12-24 23:00:00,820 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:00:00,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-24 23:00:00,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:00:00,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-24 23:00:00,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=398, Invalid=1858, Unknown=0, NotChecked=0, Total=2256 [2023-12-24 23:00:00,821 INFO L87 Difference]: Start difference. First operand 358 states and 461 transitions. Second operand has 48 states, 48 states have (on average 1.7083333333333333) internal successors, (82), 47 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:00:08,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:00:08,197 INFO L93 Difference]: Finished difference Result 1085 states and 1329 transitions. [2023-12-24 23:00:08,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-12-24 23:00:08,198 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.7083333333333333) internal successors, (82), 47 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2023-12-24 23:00:08,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:00:08,199 INFO L225 Difference]: With dead ends: 1085 [2023-12-24 23:00:08,199 INFO L226 Difference]: Without dead ends: 1056 [2023-12-24 23:00:08,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1866 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=1128, Invalid=6354, Unknown=0, NotChecked=0, Total=7482 [2023-12-24 23:00:08,200 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 271 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 1199 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 1212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-24 23:00:08,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 513 Invalid, 1212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1199 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-24 23:00:08,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1056 states. [2023-12-24 23:00:08,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1056 to 357. [2023-12-24 23:00:08,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 356 states have (on average 1.2921348314606742) internal successors, (460), 356 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) [2023-12-24 23:00:08,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 460 transitions. [2023-12-24 23:00:08,793 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 460 transitions. Word has length 42 [2023-12-24 23:00:08,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:00:08,793 INFO L495 AbstractCegarLoop]: Abstraction has 357 states and 460 transitions. [2023-12-24 23:00:08,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.7083333333333333) internal successors, (82), 47 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:00:08,793 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 460 transitions. [2023-12-24 23:00:08,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-24 23:00:08,793 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:00:08,793 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:00:08,796 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2023-12-24 23:00:08,996 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 [2023-12-24 23:00:08,996 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:00:08,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:00:08,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1997358752, now seen corresponding path program 24 times [2023-12-24 23:00:08,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:00:08,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [979476891] [2023-12-24 23:00:08,997 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-24 23:00:08,997 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 [2023-12-24 23:00:08,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:00:08,998 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) [2023-12-24 23:00:08,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2023-12-24 23:00:09,066 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2023-12-24 23:00:09,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:00:09,069 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-24 23:00:09,070 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:00:09,731 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 8 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 23:00:09,731 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:00:11,931 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 8 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 23:00:11,931 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:00:11,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [979476891] [2023-12-24 23:00:11,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [979476891] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:00:11,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:00:11,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 47 [2023-12-24 23:00:11,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505908052] [2023-12-24 23:00:11,931 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:00:11,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-24 23:00:11,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:00:11,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-24 23:00:11,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=399, Invalid=1857, Unknown=0, NotChecked=0, Total=2256 [2023-12-24 23:00:11,932 INFO L87 Difference]: Start difference. First operand 357 states and 460 transitions. Second operand has 48 states, 48 states have (on average 1.7083333333333333) internal successors, (82), 47 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:00:19,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:00:19,986 INFO L93 Difference]: Finished difference Result 1318 states and 1609 transitions. [2023-12-24 23:00:19,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-12-24 23:00:19,986 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.7083333333333333) internal successors, (82), 47 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2023-12-24 23:00:19,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:00:19,988 INFO L225 Difference]: With dead ends: 1318 [2023-12-24 23:00:19,988 INFO L226 Difference]: Without dead ends: 1289 [2023-12-24 23:00:19,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2126 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=1208, Invalid=7164, Unknown=0, NotChecked=0, Total=8372 [2023-12-24 23:00:19,989 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 378 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 1276 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 1293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-24 23:00:19,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [378 Valid, 516 Invalid, 1293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1276 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-24 23:00:19,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1289 states. [2023-12-24 23:00:20,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1289 to 356. [2023-12-24 23:00:20,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 355 states have (on average 1.2929577464788733) internal successors, (459), 355 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:00:20,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 459 transitions. [2023-12-24 23:00:20,625 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 459 transitions. Word has length 42 [2023-12-24 23:00:20,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:00:20,625 INFO L495 AbstractCegarLoop]: Abstraction has 356 states and 459 transitions. [2023-12-24 23:00:20,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.7083333333333333) internal successors, (82), 47 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:00:20,625 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 459 transitions. [2023-12-24 23:00:20,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-24 23:00:20,626 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:00:20,626 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:00:20,639 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 (50)] Ended with exit code 0 [2023-12-24 23:00:20,832 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 [2023-12-24 23:00:20,833 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:00:20,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:00:20,833 INFO L85 PathProgramCache]: Analyzing trace with hash -499202431, now seen corresponding path program 25 times [2023-12-24 23:00:20,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:00:20,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1184825297] [2023-12-24 23:00:20,834 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-24 23:00:20,834 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 [2023-12-24 23:00:20,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:00:20,835 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) [2023-12-24 23:00:20,836 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 [2023-12-24 23:00:20,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 23:00:20,901 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-24 23:00:20,902 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:00:21,572 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 8 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 23:00:21,572 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 23:00:23,692 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 8 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 23:00:23,692 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 23:00:23,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1184825297] [2023-12-24 23:00:23,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1184825297] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 23:00:23,692 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 23:00:23,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 47 [2023-12-24 23:00:23,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23339107] [2023-12-24 23:00:23,693 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 23:00:23,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-24 23:00:23,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 23:00:23,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-24 23:00:23,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=400, Invalid=1856, Unknown=0, NotChecked=0, Total=2256 [2023-12-24 23:00:23,694 INFO L87 Difference]: Start difference. First operand 356 states and 459 transitions. Second operand has 48 states, 48 states have (on average 1.7083333333333333) internal successors, (82), 47 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:00:32,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 23:00:32,153 INFO L93 Difference]: Finished difference Result 1550 states and 1888 transitions. [2023-12-24 23:00:32,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-12-24 23:00:32,153 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.7083333333333333) internal successors, (82), 47 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2023-12-24 23:00:32,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 23:00:32,155 INFO L225 Difference]: With dead ends: 1550 [2023-12-24 23:00:32,155 INFO L226 Difference]: Without dead ends: 1521 [2023-12-24 23:00:32,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2053 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=1237, Invalid=6953, Unknown=0, NotChecked=0, Total=8190 [2023-12-24 23:00:32,155 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 361 mSDsluCounter, 738 mSDsCounter, 0 mSdLazyCounter, 1301 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 778 SdHoareTripleChecker+Invalid, 1321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-24 23:00:32,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 778 Invalid, 1321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1301 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-24 23:00:32,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1521 states. [2023-12-24 23:00:32,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1521 to 355. [2023-12-24 23:00:32,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 354 states have (on average 1.2937853107344632) internal successors, (458), 354 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:00:32,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 458 transitions. [2023-12-24 23:00:32,776 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 458 transitions. Word has length 42 [2023-12-24 23:00:32,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 23:00:32,776 INFO L495 AbstractCegarLoop]: Abstraction has 355 states and 458 transitions. [2023-12-24 23:00:32,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.7083333333333333) internal successors, (82), 47 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 23:00:32,776 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 458 transitions. [2023-12-24 23:00:32,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-24 23:00:32,777 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 23:00:32,777 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 23:00:32,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2023-12-24 23:00:32,979 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 [2023-12-24 23:00:32,979 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 23:00:32,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 23:00:32,980 INFO L85 PathProgramCache]: Analyzing trace with hash -727969472, now seen corresponding path program 26 times [2023-12-24 23:00:32,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 23:00:32,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1848751298] [2023-12-24 23:00:32,980 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-24 23:00:32,980 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 [2023-12-24 23:00:32,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 23:00:32,981 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) [2023-12-24 23:00:32,984 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 [2023-12-24 23:00:33,042 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-24 23:00:33,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-24 23:00:33,045 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-24 23:00:33,047 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 23:00:33,701 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 8 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-24 23:00:33,701 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-24 23:00:35,016 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-24 23:00:35,019 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 [2023-12-24 23:00:35,037 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 (52)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 23:00:35,046 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 [2023-12-24 23:00:35,219 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 [2023-12-24 23:00:35,219 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 43 with TraceHistMax 9,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-5-1 term,while PolyPacSimplificationTermWalker was simplifying 5 xjuncts wrt. a ATOM-1 context. [2023-12-24 23:00:35,223 INFO L445 BasicCegarLoop]: Path program histogram: [26, 13, 7, 4, 1] [2023-12-24 23:00:35,226 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-24 23:00:35,227 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.12 11:00:35 BoogieIcfgContainer [2023-12-24 23:00:35,227 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-24 23:00:35,228 INFO L158 Benchmark]: Toolchain (without parser) took 867782.71ms. Allocated memory was 202.4MB in the beginning and 811.6MB in the end (delta: 609.2MB). Free memory was 154.1MB in the beginning and 125.1MB in the end (delta: 28.9MB). Peak memory consumption was 639.2MB. Max. memory is 8.0GB. [2023-12-24 23:00:35,228 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 202.4MB. Free memory is still 150.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 23:00:35,228 INFO L158 Benchmark]: CACSL2BoogieTranslator took 174.26ms. Allocated memory is still 202.4MB. Free memory was 153.7MB in the beginning and 142.5MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-24 23:00:35,228 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.17ms. Allocated memory is still 202.4MB. Free memory was 142.5MB in the beginning and 140.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-24 23:00:35,228 INFO L158 Benchmark]: Boogie Preprocessor took 22.13ms. Allocated memory is still 202.4MB. Free memory was 140.7MB in the beginning and 139.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-24 23:00:35,228 INFO L158 Benchmark]: RCFGBuilder took 209.39ms. Allocated memory is still 202.4MB. Free memory was 139.0MB in the beginning and 127.1MB in the end (delta: 11.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-24 23:00:35,228 INFO L158 Benchmark]: TraceAbstraction took 867353.84ms. Allocated memory was 202.4MB in the beginning and 811.6MB in the end (delta: 609.2MB). Free memory was 126.4MB in the beginning and 125.1MB in the end (delta: 1.3MB). Peak memory consumption was 610.9MB. Max. memory is 8.0GB. [2023-12-24 23:00:35,229 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 202.4MB. Free memory is still 150.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 174.26ms. Allocated memory is still 202.4MB. Free memory was 153.7MB in the beginning and 142.5MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 19.17ms. Allocated memory is still 202.4MB. Free memory was 142.5MB in the beginning and 140.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 22.13ms. Allocated memory is still 202.4MB. Free memory was 140.7MB in the beginning and 139.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 209.39ms. Allocated memory is still 202.4MB. Free memory was 139.0MB in the beginning and 127.1MB in the end (delta: 11.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 867353.84ms. Allocated memory was 202.4MB in the beginning and 811.6MB in the end (delta: 609.2MB). Free memory was 126.4MB in the beginning and 125.1MB in the end (delta: 1.3MB). Peak memory consumption was 610.9MB. 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: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 43 with TraceHistMax 9,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-5-1 term,while PolyPacSimplificationTermWalker was simplifying 5 xjuncts wrt. a ATOM-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 867.3s, OverallIterations: 51, TraceHistogramMax: 26, PathProgramHistogramMax: 26, EmptinessCheckTime: 0.0s, AutomataDifference: 754.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 44963 SdHoareTripleChecker+Valid, 47.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 44963 mSDsluCounter, 26199 SdHoareTripleChecker+Invalid, 42.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 24647 mSDsCounter, 11067 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 41369 IncrementalHoareTripleChecker+Invalid, 52436 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11067 mSolverCounterUnsat, 1552 mSDtfsCounter, 41369 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5794 GetRequests, 1108 SyntacticMatches, 0 SemanticMatches, 4686 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 604627 ImplicationChecksByTransitivity, 728.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=359occurred in iteration=46, InterpolantAutomatonStates: 3512, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 9.9s AutomataMinimizationTime, 50 MinimizatonAttempts, 23212 StatesRemovedByMinimization, 50 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 88.0s InterpolantComputationTime, 1476 NumberOfCodeBlocks, 1476 NumberOfCodeBlocksAsserted, 188 NumberOfCheckSat, 2843 ConstructedInterpolants, 80 QuantifiedInterpolants, 35119 SizeOfPredicates, 309 NumberOfNonLiveVariables, 3527 ConjunctsInSsa, 1073 ConjunctsInUnsatCore, 99 InterpolantComputations, 1 PerfectInterpolantSequences, 507/7460 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