/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/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label04.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-22 01:37:58,964 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-22 01:37:59,035 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-22 01:37:59,040 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-22 01:37:59,040 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-22 01:37:59,063 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-22 01:37:59,063 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-22 01:37:59,063 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-22 01:37:59,064 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-22 01:37:59,067 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-22 01:37:59,067 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-22 01:37:59,067 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-22 01:37:59,068 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-22 01:37:59,069 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-22 01:37:59,069 INFO L153 SettingsManager]: * Use SBE=true [2023-12-22 01:37:59,069 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-22 01:37:59,070 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-22 01:37:59,070 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-22 01:37:59,070 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-22 01:37:59,071 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-22 01:37:59,071 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-22 01:37:59,071 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-22 01:37:59,071 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-22 01:37:59,072 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-22 01:37:59,072 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-22 01:37:59,072 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-22 01:37:59,072 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-22 01:37:59,072 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-22 01:37:59,072 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-22 01:37:59,072 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-22 01:37:59,073 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-22 01:37:59,073 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-22 01:37:59,073 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-22 01:37:59,074 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-22 01:37:59,074 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 01:37:59,074 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-22 01:37:59,074 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-22 01:37:59,074 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-22 01:37:59,074 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-22 01:37:59,074 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-22 01:37:59,074 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-22 01:37:59,075 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-22 01:37:59,075 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-22 01:37:59,075 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-22 01:37:59,075 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-22 01:37:59,075 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-22 01:37:59,075 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-22 01:37:59,273 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-22 01:37:59,292 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-22 01:37:59,293 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-22 01:37:59,294 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-22 01:37:59,294 INFO L274 PluginConnector]: CDTParser initialized [2023-12-22 01:37:59,296 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label04.c [2023-12-22 01:38:00,379 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-22 01:38:00,750 INFO L384 CDTParser]: Found 1 translation units. [2023-12-22 01:38:00,751 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label04.c [2023-12-22 01:38:00,781 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49d7b8d62/b590b2b0731543448165924b3119fa33/FLAG58e606bf5 [2023-12-22 01:38:00,794 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49d7b8d62/b590b2b0731543448165924b3119fa33 [2023-12-22 01:38:00,795 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-22 01:38:00,797 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-22 01:38:00,799 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-22 01:38:00,799 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-22 01:38:00,802 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-22 01:38:00,802 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:38:00" (1/1) ... [2023-12-22 01:38:00,803 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47bdbc0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:38:00, skipping insertion in model container [2023-12-22 01:38:00,803 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:38:00" (1/1) ... [2023-12-22 01:38:00,898 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-22 01:38:01,203 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label04.c[15510,15523] [2023-12-22 01:38:01,261 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label04.c[22571,22584] [2023-12-22 01:38:01,924 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 01:38:01,937 INFO L202 MainTranslator]: Completed pre-run [2023-12-22 01:38:01,973 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label04.c[15510,15523] [2023-12-22 01:38:01,985 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label04.c[22571,22584] [2023-12-22 01:38:02,302 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 01:38:02,357 INFO L206 MainTranslator]: Completed translation [2023-12-22 01:38:02,358 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:38:02 WrapperNode [2023-12-22 01:38:02,358 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-22 01:38:02,359 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-22 01:38:02,359 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-22 01:38:02,359 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-22 01:38:02,364 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:38:02" (1/1) ... [2023-12-22 01:38:02,423 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:38:02" (1/1) ... [2023-12-22 01:38:02,529 INFO L138 Inliner]: procedures = 39, calls = 23, calls flagged for inlining = 18, calls inlined = 18, statements flattened = 5124 [2023-12-22 01:38:02,530 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-22 01:38:02,530 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-22 01:38:02,530 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-22 01:38:02,530 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-22 01:38:02,539 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:38:02" (1/1) ... [2023-12-22 01:38:02,539 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:38:02" (1/1) ... [2023-12-22 01:38:02,584 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:38:02" (1/1) ... [2023-12-22 01:38:02,653 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]. [2023-12-22 01:38:02,654 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:38:02" (1/1) ... [2023-12-22 01:38:02,654 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:38:02" (1/1) ... [2023-12-22 01:38:02,730 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:38:02" (1/1) ... [2023-12-22 01:38:02,757 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:38:02" (1/1) ... [2023-12-22 01:38:02,777 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:38:02" (1/1) ... [2023-12-22 01:38:02,792 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:38:02" (1/1) ... [2023-12-22 01:38:02,827 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-22 01:38:02,828 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-22 01:38:02,828 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-22 01:38:02,828 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-22 01:38:02,829 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:38:02" (1/1) ... [2023-12-22 01:38:02,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 01:38:02,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-22 01:38:02,866 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) [2023-12-22 01:38:02,884 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 [2023-12-22 01:38:02,899 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-22 01:38:02,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-22 01:38:02,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-22 01:38:02,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-22 01:38:03,004 INFO L241 CfgBuilder]: Building ICFG [2023-12-22 01:38:03,006 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-22 01:38:29,173 INFO L282 CfgBuilder]: Performing block encoding [2023-12-22 01:38:29,221 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-22 01:38:29,221 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-22 01:38:29,221 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:38:29 BoogieIcfgContainer [2023-12-22 01:38:29,221 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-22 01:38:29,223 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-22 01:38:29,223 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-22 01:38:29,225 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-22 01:38:29,225 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 01:38:00" (1/3) ... [2023-12-22 01:38:29,226 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49882bc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:38:29, skipping insertion in model container [2023-12-22 01:38:29,226 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:38:02" (2/3) ... [2023-12-22 01:38:29,226 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49882bc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:38:29, skipping insertion in model container [2023-12-22 01:38:29,226 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:38:29" (3/3) ... [2023-12-22 01:38:29,227 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label04.c [2023-12-22 01:38:29,238 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-22 01:38:29,238 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-22 01:38:29,282 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-22 01:38:29,286 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;@5ec86c0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-22 01:38:29,287 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-22 01:38:29,294 INFO L276 IsEmpty]: Start isEmpty. Operand has 851 states, 848 states have (on average 1.9728773584905661) internal successors, (1673), 850 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:38:29,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-22 01:38:29,299 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:38:29,300 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:38:29,300 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:38:29,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:38:29,304 INFO L85 PathProgramCache]: Analyzing trace with hash -150308239, now seen corresponding path program 1 times [2023-12-22 01:38:29,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:38:29,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1635378215] [2023-12-22 01:38:29,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:38:29,313 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 [2023-12-22 01:38:29,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:38:29,315 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) [2023-12-22 01:38:29,319 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 [2023-12-22 01:38:29,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:38:29,404 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-22 01:38:29,407 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:38:29,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:38:29,420 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:38:29,421 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:38:29,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1635378215] [2023-12-22 01:38:29,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1635378215] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:38:29,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:38:29,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 01:38:29,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498206745] [2023-12-22 01:38:29,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:38:29,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-22 01:38:29,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:38:29,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-22 01:38:29,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-22 01:38:29,446 INFO L87 Difference]: Start difference. First operand has 851 states, 848 states have (on average 1.9728773584905661) internal successors, (1673), 850 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:38:29,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:38:29,620 INFO L93 Difference]: Finished difference Result 1657 states and 3259 transitions. [2023-12-22 01:38:29,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-22 01:38:29,627 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-12-22 01:38:29,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:38:29,648 INFO L225 Difference]: With dead ends: 1657 [2023-12-22 01:38:29,648 INFO L226 Difference]: Without dead ends: 847 [2023-12-22 01:38:29,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-22 01:38:29,657 INFO L413 NwaCegarLoop]: 1601 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1601 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 01:38:29,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1601 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 01:38:29,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2023-12-22 01:38:29,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 847. [2023-12-22 01:38:29,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 847 states, 845 states have (on average 1.8958579881656805) internal successors, (1602), 846 states have internal predecessors, (1602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:38:29,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1602 transitions. [2023-12-22 01:38:29,710 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1602 transitions. Word has length 23 [2023-12-22 01:38:29,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:38:29,710 INFO L495 AbstractCegarLoop]: Abstraction has 847 states and 1602 transitions. [2023-12-22 01:38:29,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:38:29,711 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1602 transitions. [2023-12-22 01:38:29,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-22 01:38:29,711 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:38:29,712 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:38:29,725 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 [2023-12-22 01:38:29,925 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 [2023-12-22 01:38:29,926 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:38:29,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:38:29,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1839251981, now seen corresponding path program 1 times [2023-12-22 01:38:29,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:38:29,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1184413668] [2023-12-22 01:38:29,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:38:29,929 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 [2023-12-22 01:38:29,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:38:29,937 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) [2023-12-22 01:38:29,939 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 [2023-12-22 01:38:30,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:38:30,020 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-22 01:38:30,022 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:38:30,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:38:30,076 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:38:30,076 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:38:30,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1184413668] [2023-12-22 01:38:30,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1184413668] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:38:30,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:38:30,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 01:38:30,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894523542] [2023-12-22 01:38:30,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:38:30,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 01:38:30,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:38:30,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 01:38:30,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 01:38:30,084 INFO L87 Difference]: Start difference. First operand 847 states and 1602 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:38:30,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:38:30,184 INFO L93 Difference]: Finished difference Result 899 states and 1684 transitions. [2023-12-22 01:38:30,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 01:38:30,186 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-12-22 01:38:30,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:38:30,189 INFO L225 Difference]: With dead ends: 899 [2023-12-22 01:38:30,189 INFO L226 Difference]: Without dead ends: 847 [2023-12-22 01:38:30,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 01:38:30,191 INFO L413 NwaCegarLoop]: 1599 mSDtfsCounter, 0 mSDsluCounter, 3154 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4753 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 01:38:30,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4753 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 01:38:30,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2023-12-22 01:38:30,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 847. [2023-12-22 01:38:30,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 847 states, 845 states have (on average 1.8485207100591716) internal successors, (1562), 846 states have internal predecessors, (1562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:38:30,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1562 transitions. [2023-12-22 01:38:30,213 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1562 transitions. Word has length 23 [2023-12-22 01:38:30,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:38:30,214 INFO L495 AbstractCegarLoop]: Abstraction has 847 states and 1562 transitions. [2023-12-22 01:38:30,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:38:30,214 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1562 transitions. [2023-12-22 01:38:30,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-22 01:38:30,215 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:38:30,215 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:38:30,221 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-22 01:38:30,420 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 [2023-12-22 01:38:30,421 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:38:30,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:38:30,426 INFO L85 PathProgramCache]: Analyzing trace with hash 2061820925, now seen corresponding path program 1 times [2023-12-22 01:38:30,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:38:30,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [536718159] [2023-12-22 01:38:30,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:38:30,428 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 [2023-12-22 01:38:30,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:38:30,429 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) [2023-12-22 01:38:30,438 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 [2023-12-22 01:38:30,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:38:30,499 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 01:38:30,501 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:38:30,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:38:30,626 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:38:30,626 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:38:30,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [536718159] [2023-12-22 01:38:30,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [536718159] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:38:30,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:38:30,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 01:38:30,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932914322] [2023-12-22 01:38:30,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:38:30,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 01:38:30,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:38:30,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 01:38:30,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:38:30,628 INFO L87 Difference]: Start difference. First operand 847 states and 1562 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:39:06,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:39:06,395 INFO L93 Difference]: Finished difference Result 2351 states and 4435 transitions. [2023-12-22 01:39:06,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 01:39:06,396 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2023-12-22 01:39:06,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:39:06,400 INFO L225 Difference]: With dead ends: 2351 [2023-12-22 01:39:06,401 INFO L226 Difference]: Without dead ends: 1598 [2023-12-22 01:39:06,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:39:06,402 INFO L413 NwaCegarLoop]: 337 mSDtfsCounter, 842 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2467 mSolverCounterSat, 512 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 2979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 512 IncrementalHoareTripleChecker+Valid, 2467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.6s IncrementalHoareTripleChecker+Time [2023-12-22 01:39:06,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [842 Valid, 344 Invalid, 2979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [512 Valid, 2467 Invalid, 0 Unknown, 0 Unchecked, 35.6s Time] [2023-12-22 01:39:06,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1598 states. [2023-12-22 01:39:06,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1598 to 1598. [2023-12-22 01:39:06,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1598 states, 1596 states have (on average 1.75) internal successors, (2793), 1597 states have internal predecessors, (2793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:39:06,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1598 states to 1598 states and 2793 transitions. [2023-12-22 01:39:06,429 INFO L78 Accepts]: Start accepts. Automaton has 1598 states and 2793 transitions. Word has length 60 [2023-12-22 01:39:06,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:39:06,430 INFO L495 AbstractCegarLoop]: Abstraction has 1598 states and 2793 transitions. [2023-12-22 01:39:06,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:39:06,430 INFO L276 IsEmpty]: Start isEmpty. Operand 1598 states and 2793 transitions. [2023-12-22 01:39:06,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-22 01:39:06,431 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:39:06,431 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:39:06,451 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 [2023-12-22 01:39:06,634 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 [2023-12-22 01:39:06,634 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:39:06,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:39:06,635 INFO L85 PathProgramCache]: Analyzing trace with hash -138572409, now seen corresponding path program 1 times [2023-12-22 01:39:06,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:39:06,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1487887086] [2023-12-22 01:39:06,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:39:06,636 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 [2023-12-22 01:39:06,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:39:06,637 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) [2023-12-22 01:39:06,641 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 [2023-12-22 01:39:06,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:39:06,739 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-22 01:39:06,741 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:39:07,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:39:07,708 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:39:07,708 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:39:07,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1487887086] [2023-12-22 01:39:07,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1487887086] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:39:07,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:39:07,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-22 01:39:07,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592810722] [2023-12-22 01:39:07,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:39:07,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-22 01:39:07,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:39:07,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-22 01:39:07,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-12-22 01:39:07,710 INFO L87 Difference]: Start difference. First operand 1598 states and 2793 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:39:07,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:39:07,940 INFO L93 Difference]: Finished difference Result 1941 states and 3346 transitions. [2023-12-22 01:39:07,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-22 01:39:07,941 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2023-12-22 01:39:07,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:39:07,948 INFO L225 Difference]: With dead ends: 1941 [2023-12-22 01:39:07,949 INFO L226 Difference]: Without dead ends: 1892 [2023-12-22 01:39:07,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-12-22 01:39:07,951 INFO L413 NwaCegarLoop]: 1553 mSDtfsCounter, 6444 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6444 SdHoareTripleChecker+Valid, 2062 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-22 01:39:07,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6444 Valid, 2062 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-22 01:39:07,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1892 states. [2023-12-22 01:39:07,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1892 to 1692. [2023-12-22 01:39:07,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1692 states, 1690 states have (on average 1.7431952662721895) internal successors, (2946), 1691 states have internal predecessors, (2946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:39:07,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1692 states to 1692 states and 2946 transitions. [2023-12-22 01:39:07,981 INFO L78 Accepts]: Start accepts. Automaton has 1692 states and 2946 transitions. Word has length 62 [2023-12-22 01:39:07,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:39:07,982 INFO L495 AbstractCegarLoop]: Abstraction has 1692 states and 2946 transitions. [2023-12-22 01:39:07,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:39:08,006 INFO L276 IsEmpty]: Start isEmpty. Operand 1692 states and 2946 transitions. [2023-12-22 01:39:08,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-22 01:39:08,008 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:39:08,008 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:39:08,027 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-22 01:39:08,208 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 [2023-12-22 01:39:08,209 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:39:08,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:39:08,209 INFO L85 PathProgramCache]: Analyzing trace with hash -157852617, now seen corresponding path program 1 times [2023-12-22 01:39:08,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:39:08,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2142493078] [2023-12-22 01:39:08,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:39:08,210 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 [2023-12-22 01:39:08,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:39:08,211 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) [2023-12-22 01:39:08,212 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 [2023-12-22 01:39:08,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:39:08,277 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 01:39:08,278 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:39:08,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:39:08,362 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:39:08,362 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:39:08,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2142493078] [2023-12-22 01:39:08,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2142493078] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:39:08,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:39:08,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 01:39:08,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456275749] [2023-12-22 01:39:08,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:39:08,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 01:39:08,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:39:08,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 01:39:08,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:39:08,364 INFO L87 Difference]: Start difference. First operand 1692 states and 2946 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:39:08,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:39:08,412 INFO L93 Difference]: Finished difference Result 1962 states and 3382 transitions. [2023-12-22 01:39:08,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 01:39:08,413 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-12-22 01:39:08,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:39:08,419 INFO L225 Difference]: With dead ends: 1962 [2023-12-22 01:39:08,419 INFO L226 Difference]: Without dead ends: 1819 [2023-12-22 01:39:08,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:39:08,420 INFO L413 NwaCegarLoop]: 1555 mSDtfsCounter, 1490 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1490 SdHoareTripleChecker+Valid, 1626 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 01:39:08,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1490 Valid, 1626 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 01:39:08,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1819 states. [2023-12-22 01:39:08,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1819 to 1814. [2023-12-22 01:39:08,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1814 states, 1812 states have (on average 1.7317880794701987) internal successors, (3138), 1813 states have internal predecessors, (3138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:39:08,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1814 states to 1814 states and 3138 transitions. [2023-12-22 01:39:08,448 INFO L78 Accepts]: Start accepts. Automaton has 1814 states and 3138 transitions. Word has length 64 [2023-12-22 01:39:08,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:39:08,450 INFO L495 AbstractCegarLoop]: Abstraction has 1814 states and 3138 transitions. [2023-12-22 01:39:08,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:39:08,452 INFO L276 IsEmpty]: Start isEmpty. Operand 1814 states and 3138 transitions. [2023-12-22 01:39:08,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-22 01:39:08,456 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:39:08,456 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:39:08,462 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 [2023-12-22 01:39:08,659 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 [2023-12-22 01:39:08,660 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:39:08,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:39:08,661 INFO L85 PathProgramCache]: Analyzing trace with hash -660670881, now seen corresponding path program 1 times [2023-12-22 01:39:08,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:39:08,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [720449075] [2023-12-22 01:39:08,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:39:08,662 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 [2023-12-22 01:39:08,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:39:08,663 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) [2023-12-22 01:39:08,670 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 [2023-12-22 01:39:08,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:39:08,755 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-22 01:39:08,756 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:39:08,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:39:08,773 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:39:08,774 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:39:08,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [720449075] [2023-12-22 01:39:08,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [720449075] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:39:08,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:39:08,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 01:39:08,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194073268] [2023-12-22 01:39:08,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:39:08,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 01:39:08,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:39:08,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 01:39:08,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 01:39:08,775 INFO L87 Difference]: Start difference. First operand 1814 states and 3138 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 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) [2023-12-22 01:39:08,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:39:08,832 INFO L93 Difference]: Finished difference Result 1828 states and 3155 transitions. [2023-12-22 01:39:08,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 01:39:08,833 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2023-12-22 01:39:08,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:39:08,838 INFO L225 Difference]: With dead ends: 1828 [2023-12-22 01:39:08,838 INFO L226 Difference]: Without dead ends: 1826 [2023-12-22 01:39:08,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-22 01:39:08,839 INFO L413 NwaCegarLoop]: 1558 mSDtfsCounter, 1 mSDsluCounter, 3108 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4666 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 01:39:08,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4666 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 01:39:08,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1826 states. [2023-12-22 01:39:08,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1826 to 1822. [2023-12-22 01:39:08,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1822 states, 1820 states have (on average 1.728021978021978) internal successors, (3145), 1821 states have internal predecessors, (3145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:39:08,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1822 states to 1822 states and 3145 transitions. [2023-12-22 01:39:08,866 INFO L78 Accepts]: Start accepts. Automaton has 1822 states and 3145 transitions. Word has length 65 [2023-12-22 01:39:08,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:39:08,866 INFO L495 AbstractCegarLoop]: Abstraction has 1822 states and 3145 transitions. [2023-12-22 01:39:08,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 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) [2023-12-22 01:39:08,866 INFO L276 IsEmpty]: Start isEmpty. Operand 1822 states and 3145 transitions. [2023-12-22 01:39:08,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-22 01:39:08,867 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:39:08,867 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:39:08,885 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-22 01:39:09,070 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 [2023-12-22 01:39:09,070 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:39:09,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:39:09,071 INFO L85 PathProgramCache]: Analyzing trace with hash -347651057, now seen corresponding path program 1 times [2023-12-22 01:39:09,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:39:09,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [926426729] [2023-12-22 01:39:09,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:39:09,071 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:39:09,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:39:09,090 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) [2023-12-22 01:39:09,121 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 [2023-12-22 01:39:09,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:39:09,180 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 01:39:09,182 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:39:09,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:39:09,262 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:39:09,263 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:39:09,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [926426729] [2023-12-22 01:39:09,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [926426729] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:39:09,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:39:09,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 01:39:09,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184742884] [2023-12-22 01:39:09,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:39:09,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 01:39:09,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:39:09,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 01:39:09,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:39:09,264 INFO L87 Difference]: Start difference. First operand 1822 states and 3145 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 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) [2023-12-22 01:39:09,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:39:09,301 INFO L93 Difference]: Finished difference Result 2344 states and 3965 transitions. [2023-12-22 01:39:09,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 01:39:09,302 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 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 66 [2023-12-22 01:39:09,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:39:09,308 INFO L225 Difference]: With dead ends: 2344 [2023-12-22 01:39:09,308 INFO L226 Difference]: Without dead ends: 2071 [2023-12-22 01:39:09,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:39:09,309 INFO L413 NwaCegarLoop]: 1604 mSDtfsCounter, 1503 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1503 SdHoareTripleChecker+Valid, 1691 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 01:39:09,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1503 Valid, 1691 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 01:39:09,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2071 states. [2023-12-22 01:39:09,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2071 to 2069. [2023-12-22 01:39:09,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2069 states, 2067 states have (on average 1.7063376874697629) internal successors, (3527), 2068 states have internal predecessors, (3527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:39:09,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2069 states to 2069 states and 3527 transitions. [2023-12-22 01:39:09,337 INFO L78 Accepts]: Start accepts. Automaton has 2069 states and 3527 transitions. Word has length 66 [2023-12-22 01:39:09,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:39:09,337 INFO L495 AbstractCegarLoop]: Abstraction has 2069 states and 3527 transitions. [2023-12-22 01:39:09,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 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) [2023-12-22 01:39:09,338 INFO L276 IsEmpty]: Start isEmpty. Operand 2069 states and 3527 transitions. [2023-12-22 01:39:09,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-22 01:39:09,338 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:39:09,338 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:39:09,341 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-12-22 01:39:09,541 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 [2023-12-22 01:39:09,542 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:39:09,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:39:09,542 INFO L85 PathProgramCache]: Analyzing trace with hash -307707121, now seen corresponding path program 1 times [2023-12-22 01:39:09,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:39:09,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1172369408] [2023-12-22 01:39:09,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:39:09,542 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 [2023-12-22 01:39:09,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:39:09,543 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) [2023-12-22 01:39:09,564 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 [2023-12-22 01:39:09,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:39:09,607 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 01:39:09,608 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:39:09,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:39:09,665 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:39:09,665 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:39:09,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1172369408] [2023-12-22 01:39:09,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1172369408] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:39:09,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:39:09,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 01:39:09,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897205992] [2023-12-22 01:39:09,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:39:09,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 01:39:09,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:39:09,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 01:39:09,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:39:09,667 INFO L87 Difference]: Start difference. First operand 2069 states and 3527 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 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) [2023-12-22 01:39:09,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:39:09,701 INFO L93 Difference]: Finished difference Result 3061 states and 5069 transitions. [2023-12-22 01:39:09,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 01:39:09,702 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 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 66 [2023-12-22 01:39:09,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:39:09,708 INFO L225 Difference]: With dead ends: 3061 [2023-12-22 01:39:09,708 INFO L226 Difference]: Without dead ends: 2541 [2023-12-22 01:39:09,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:39:09,710 INFO L413 NwaCegarLoop]: 1602 mSDtfsCounter, 1501 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1501 SdHoareTripleChecker+Valid, 1693 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 01:39:09,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1501 Valid, 1693 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 01:39:09,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2541 states. [2023-12-22 01:39:09,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2541 to 2539. [2023-12-22 01:39:09,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2539 states, 2537 states have (on average 1.6724477729601892) internal successors, (4243), 2538 states have internal predecessors, (4243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:39:09,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2539 states to 2539 states and 4243 transitions. [2023-12-22 01:39:09,747 INFO L78 Accepts]: Start accepts. Automaton has 2539 states and 4243 transitions. Word has length 66 [2023-12-22 01:39:09,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:39:09,747 INFO L495 AbstractCegarLoop]: Abstraction has 2539 states and 4243 transitions. [2023-12-22 01:39:09,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 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) [2023-12-22 01:39:09,747 INFO L276 IsEmpty]: Start isEmpty. Operand 2539 states and 4243 transitions. [2023-12-22 01:39:09,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-22 01:39:09,748 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:39:09,748 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:39:09,751 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 [2023-12-22 01:39:09,951 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 [2023-12-22 01:39:09,951 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:39:09,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:39:09,952 INFO L85 PathProgramCache]: Analyzing trace with hash -933363185, now seen corresponding path program 1 times [2023-12-22 01:39:09,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:39:09,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1440889666] [2023-12-22 01:39:09,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:39:09,952 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 [2023-12-22 01:39:09,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:39:09,953 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) [2023-12-22 01:39:09,984 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 (10)] Waiting until timeout for monitored process [2023-12-22 01:39:10,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:39:10,020 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 01:39:10,021 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:39:10,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:39:10,072 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:39:10,072 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:39:10,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1440889666] [2023-12-22 01:39:10,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1440889666] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:39:10,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:39:10,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 01:39:10,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859245219] [2023-12-22 01:39:10,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:39:10,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 01:39:10,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:39:10,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 01:39:10,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:39:10,073 INFO L87 Difference]: Start difference. First operand 2539 states and 4243 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 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) [2023-12-22 01:39:10,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:39:10,116 INFO L93 Difference]: Finished difference Result 4423 states and 7133 transitions. [2023-12-22 01:39:10,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 01:39:10,116 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 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 66 [2023-12-22 01:39:10,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:39:10,126 INFO L225 Difference]: With dead ends: 4423 [2023-12-22 01:39:10,126 INFO L226 Difference]: Without dead ends: 3433 [2023-12-22 01:39:10,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:39:10,130 INFO L413 NwaCegarLoop]: 1600 mSDtfsCounter, 1499 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1499 SdHoareTripleChecker+Valid, 1695 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 01:39:10,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1499 Valid, 1695 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 01:39:10,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3433 states. [2023-12-22 01:39:10,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3433 to 3431. [2023-12-22 01:39:10,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3431 states, 3429 states have (on average 1.6270049577136192) internal successors, (5579), 3430 states have internal predecessors, (5579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:39:10,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3431 states to 3431 states and 5579 transitions. [2023-12-22 01:39:10,182 INFO L78 Accepts]: Start accepts. Automaton has 3431 states and 5579 transitions. Word has length 66 [2023-12-22 01:39:10,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:39:10,182 INFO L495 AbstractCegarLoop]: Abstraction has 3431 states and 5579 transitions. [2023-12-22 01:39:10,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 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) [2023-12-22 01:39:10,182 INFO L276 IsEmpty]: Start isEmpty. Operand 3431 states and 5579 transitions. [2023-12-22 01:39:10,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-22 01:39:10,183 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:39:10,183 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:39:10,189 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 [2023-12-22 01:39:10,389 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 [2023-12-22 01:39:10,389 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:39:10,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:39:10,390 INFO L85 PathProgramCache]: Analyzing trace with hash -44629745, now seen corresponding path program 1 times [2023-12-22 01:39:10,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:39:10,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1781330317] [2023-12-22 01:39:10,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:39:10,390 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 [2023-12-22 01:39:10,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:39:10,391 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) [2023-12-22 01:39:10,420 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 [2023-12-22 01:39:10,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:39:10,455 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 01:39:10,457 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:39:10,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:39:10,501 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:39:10,501 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:39:10,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1781330317] [2023-12-22 01:39:10,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1781330317] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:39:10,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:39:10,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 01:39:10,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240965420] [2023-12-22 01:39:10,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:39:10,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 01:39:10,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:39:10,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 01:39:10,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:39:10,502 INFO L87 Difference]: Start difference. First operand 3431 states and 5579 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 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) [2023-12-22 01:39:10,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:39:10,589 INFO L93 Difference]: Finished difference Result 7003 states and 10973 transitions. [2023-12-22 01:39:10,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 01:39:10,590 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 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 66 [2023-12-22 01:39:10,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:39:10,603 INFO L225 Difference]: With dead ends: 7003 [2023-12-22 01:39:10,603 INFO L226 Difference]: Without dead ends: 5121 [2023-12-22 01:39:10,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:39:10,605 INFO L413 NwaCegarLoop]: 1598 mSDtfsCounter, 1497 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1497 SdHoareTripleChecker+Valid, 1697 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 01:39:10,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1497 Valid, 1697 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 01:39:10,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5121 states. [2023-12-22 01:39:10,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5121 to 5119. [2023-12-22 01:39:10,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5119 states, 5117 states have (on average 1.5749462575727966) internal successors, (8059), 5118 states have internal predecessors, (8059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:39:10,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5119 states to 5119 states and 8059 transitions. [2023-12-22 01:39:10,671 INFO L78 Accepts]: Start accepts. Automaton has 5119 states and 8059 transitions. Word has length 66 [2023-12-22 01:39:10,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:39:10,671 INFO L495 AbstractCegarLoop]: Abstraction has 5119 states and 8059 transitions. [2023-12-22 01:39:10,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 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) [2023-12-22 01:39:10,672 INFO L276 IsEmpty]: Start isEmpty. Operand 5119 states and 8059 transitions. [2023-12-22 01:39:10,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-22 01:39:10,672 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:39:10,672 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:39:10,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-22 01:39:10,875 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 [2023-12-22 01:39:10,875 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:39:10,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:39:10,876 INFO L85 PathProgramCache]: Analyzing trace with hash -79067889, now seen corresponding path program 1 times [2023-12-22 01:39:10,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:39:10,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [183565821] [2023-12-22 01:39:10,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:39:10,876 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 [2023-12-22 01:39:10,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:39:10,877 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) [2023-12-22 01:39:10,897 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 (12)] Waiting until timeout for monitored process [2023-12-22 01:39:10,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:39:10,958 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 01:39:10,960 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:39:11,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:39:11,016 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:39:11,016 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:39:11,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [183565821] [2023-12-22 01:39:11,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [183565821] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:39:11,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:39:11,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 01:39:11,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151626123] [2023-12-22 01:39:11,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:39:11,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 01:39:11,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:39:11,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 01:39:11,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:39:11,017 INFO L87 Difference]: Start difference. First operand 5119 states and 8059 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 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) [2023-12-22 01:39:11,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:39:11,089 INFO L93 Difference]: Finished difference Result 11875 states and 18077 transitions. [2023-12-22 01:39:11,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 01:39:11,090 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 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 66 [2023-12-22 01:39:11,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:39:11,105 INFO L225 Difference]: With dead ends: 11875 [2023-12-22 01:39:11,105 INFO L226 Difference]: Without dead ends: 8305 [2023-12-22 01:39:11,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:39:11,110 INFO L413 NwaCegarLoop]: 1614 mSDtfsCounter, 1505 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1505 SdHoareTripleChecker+Valid, 1697 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 01:39:11,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1505 Valid, 1697 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 01:39:11,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8305 states. [2023-12-22 01:39:11,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8305 to 8303. [2023-12-22 01:39:11,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8303 states, 8301 states have (on average 1.5221057703891097) internal successors, (12635), 8302 states have internal predecessors, (12635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:39:11,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8303 states to 8303 states and 12635 transitions. [2023-12-22 01:39:11,225 INFO L78 Accepts]: Start accepts. Automaton has 8303 states and 12635 transitions. Word has length 66 [2023-12-22 01:39:11,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:39:11,225 INFO L495 AbstractCegarLoop]: Abstraction has 8303 states and 12635 transitions. [2023-12-22 01:39:11,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 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) [2023-12-22 01:39:11,225 INFO L276 IsEmpty]: Start isEmpty. Operand 8303 states and 12635 transitions. [2023-12-22 01:39:11,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-22 01:39:11,225 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:39:11,225 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:39:11,231 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 [2023-12-22 01:39:11,428 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 [2023-12-22 01:39:11,428 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:39:11,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:39:11,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1522612916, now seen corresponding path program 1 times [2023-12-22 01:39:11,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:39:11,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1789599800] [2023-12-22 01:39:11,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:39:11,429 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 [2023-12-22 01:39:11,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:39:11,430 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) [2023-12-22 01:39:11,432 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 [2023-12-22 01:39:11,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:39:11,493 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 01:39:11,494 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:39:11,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:39:11,584 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:39:11,584 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:39:11,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1789599800] [2023-12-22 01:39:11,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1789599800] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:39:11,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:39:11,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 01:39:11,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800972329] [2023-12-22 01:39:11,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:39:11,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 01:39:11,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:39:11,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 01:39:11,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:39:11,586 INFO L87 Difference]: Start difference. First operand 8303 states and 12635 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:39:11,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:39:11,667 INFO L93 Difference]: Finished difference Result 15222 states and 23009 transitions. [2023-12-22 01:39:11,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 01:39:11,668 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2023-12-22 01:39:11,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:39:11,682 INFO L225 Difference]: With dead ends: 15222 [2023-12-22 01:39:11,682 INFO L226 Difference]: Without dead ends: 11475 [2023-12-22 01:39:11,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:39:11,687 INFO L413 NwaCegarLoop]: 1619 mSDtfsCounter, 1504 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 1698 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 01:39:11,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1504 Valid, 1698 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 01:39:11,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11475 states. [2023-12-22 01:39:11,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11475 to 11473. [2023-12-22 01:39:11,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11473 states, 11471 states have (on average 1.5033562897742132) internal successors, (17245), 11472 states have internal predecessors, (17245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:39:11,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11473 states to 11473 states and 17245 transitions. [2023-12-22 01:39:11,855 INFO L78 Accepts]: Start accepts. Automaton has 11473 states and 17245 transitions. Word has length 68 [2023-12-22 01:39:11,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:39:11,855 INFO L495 AbstractCegarLoop]: Abstraction has 11473 states and 17245 transitions. [2023-12-22 01:39:11,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:39:11,856 INFO L276 IsEmpty]: Start isEmpty. Operand 11473 states and 17245 transitions. [2023-12-22 01:39:11,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-22 01:39:11,858 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:39:11,858 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:39:11,870 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 [2023-12-22 01:39:12,068 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 [2023-12-22 01:39:12,068 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:39:12,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:39:12,069 INFO L85 PathProgramCache]: Analyzing trace with hash 443992391, now seen corresponding path program 1 times [2023-12-22 01:39:12,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:39:12,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1901283850] [2023-12-22 01:39:12,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:39:12,069 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 [2023-12-22 01:39:12,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:39:12,070 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) [2023-12-22 01:39:12,072 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 [2023-12-22 01:39:12,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:39:12,196 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 01:39:12,197 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:39:12,226 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:39:12,226 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:39:12,227 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:39:12,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1901283850] [2023-12-22 01:39:12,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1901283850] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:39:12,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:39:12,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 01:39:12,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935436912] [2023-12-22 01:39:12,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:39:12,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 01:39:12,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:39:12,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 01:39:12,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:39:12,228 INFO L87 Difference]: Start difference. First operand 11473 states and 17245 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:39:12,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:39:12,364 INFO L93 Difference]: Finished difference Result 18410 states and 27541 transitions. [2023-12-22 01:39:12,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 01:39:12,364 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2023-12-22 01:39:12,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:39:12,375 INFO L225 Difference]: With dead ends: 18410 [2023-12-22 01:39:12,375 INFO L226 Difference]: Without dead ends: 8488 [2023-12-22 01:39:12,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:39:12,384 INFO L413 NwaCegarLoop]: 1607 mSDtfsCounter, 58 mSDsluCounter, 1545 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 3152 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 01:39:12,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 3152 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 01:39:12,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8488 states. [2023-12-22 01:39:12,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8488 to 8486. [2023-12-22 01:39:12,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8486 states, 8484 states have (on average 1.5221593587930222) internal successors, (12914), 8485 states have internal predecessors, (12914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:39:12,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8486 states to 8486 states and 12914 transitions. [2023-12-22 01:39:12,505 INFO L78 Accepts]: Start accepts. Automaton has 8486 states and 12914 transitions. Word has length 86 [2023-12-22 01:39:12,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:39:12,505 INFO L495 AbstractCegarLoop]: Abstraction has 8486 states and 12914 transitions. [2023-12-22 01:39:12,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:39:12,506 INFO L276 IsEmpty]: Start isEmpty. Operand 8486 states and 12914 transitions. [2023-12-22 01:39:12,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-22 01:39:12,507 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:39:12,507 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:39:12,522 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 (14)] Ended with exit code 0 [2023-12-22 01:39:12,710 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 [2023-12-22 01:39:12,710 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:39:12,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:39:12,711 INFO L85 PathProgramCache]: Analyzing trace with hash 2082755052, now seen corresponding path program 1 times [2023-12-22 01:39:12,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:39:12,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1788902950] [2023-12-22 01:39:12,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:39:12,711 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 [2023-12-22 01:39:12,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:39:12,713 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) [2023-12-22 01:39:12,714 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 [2023-12-22 01:39:12,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:39:12,796 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-22 01:39:12,797 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:39:13,590 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:39:13,590 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:39:13,880 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:39:13,881 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:39:13,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1788902950] [2023-12-22 01:39:13,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1788902950] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:39:13,881 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:39:13,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-22 01:39:13,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614839188] [2023-12-22 01:39:13,881 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:39:13,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-22 01:39:13,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:39:13,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-22 01:39:13,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-22 01:39:13,882 INFO L87 Difference]: Start difference. First operand 8486 states and 12914 transitions. Second operand has 16 states, 16 states have (on average 10.0) internal successors, (160), 16 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:39:15,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:39:15,735 INFO L93 Difference]: Finished difference Result 26976 states and 39751 transitions. [2023-12-22 01:39:15,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-22 01:39:15,736 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 10.0) internal successors, (160), 16 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2023-12-22 01:39:15,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:39:15,760 INFO L225 Difference]: With dead ends: 26976 [2023-12-22 01:39:15,761 INFO L226 Difference]: Without dead ends: 20062 [2023-12-22 01:39:15,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=249, Invalid=743, Unknown=0, NotChecked=0, Total=992 [2023-12-22 01:39:15,770 INFO L413 NwaCegarLoop]: 1590 mSDtfsCounter, 3661 mSDsluCounter, 12582 mSDsCounter, 0 mSdLazyCounter, 1095 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3661 SdHoareTripleChecker+Valid, 14172 SdHoareTripleChecker+Invalid, 1108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-22 01:39:15,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3661 Valid, 14172 Invalid, 1108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1095 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-22 01:39:15,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20062 states. [2023-12-22 01:39:16,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20062 to 15398. [2023-12-22 01:39:16,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15398 states, 15396 states have (on average 1.493504806443232) internal successors, (22994), 15397 states have internal predecessors, (22994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:39:16,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15398 states to 15398 states and 22994 transitions. [2023-12-22 01:39:16,114 INFO L78 Accepts]: Start accepts. Automaton has 15398 states and 22994 transitions. Word has length 88 [2023-12-22 01:39:16,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:39:16,114 INFO L495 AbstractCegarLoop]: Abstraction has 15398 states and 22994 transitions. [2023-12-22 01:39:16,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 10.0) internal successors, (160), 16 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:39:16,115 INFO L276 IsEmpty]: Start isEmpty. Operand 15398 states and 22994 transitions. [2023-12-22 01:39:16,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-22 01:39:16,116 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:39:16,116 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:39:16,122 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 [2023-12-22 01:39:16,319 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 [2023-12-22 01:39:16,320 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:39:16,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:39:16,320 INFO L85 PathProgramCache]: Analyzing trace with hash 811683528, now seen corresponding path program 1 times [2023-12-22 01:39:16,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:39:16,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [836971471] [2023-12-22 01:39:16,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:39:16,320 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 [2023-12-22 01:39:16,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:39:16,321 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) [2023-12-22 01:39:16,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-22 01:39:16,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:39:16,399 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 01:39:16,400 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:39:16,431 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:39:16,432 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:39:16,432 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:39:16,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [836971471] [2023-12-22 01:39:16,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [836971471] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:39:16,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:39:16,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 01:39:16,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893476286] [2023-12-22 01:39:16,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:39:16,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 01:39:16,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:39:16,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 01:39:16,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:39:16,433 INFO L87 Difference]: Start difference. First operand 15398 states and 22994 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:39:16,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:39:16,592 INFO L93 Difference]: Finished difference Result 22314 states and 33124 transitions. [2023-12-22 01:39:16,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 01:39:16,593 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2023-12-22 01:39:16,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:39:16,605 INFO L225 Difference]: With dead ends: 22314 [2023-12-22 01:39:16,605 INFO L226 Difference]: Without dead ends: 8488 [2023-12-22 01:39:16,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:39:16,617 INFO L413 NwaCegarLoop]: 1600 mSDtfsCounter, 52 mSDsluCounter, 1537 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 3137 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 01:39:16,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 3137 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 01:39:16,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8488 states. [2023-12-22 01:39:16,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8488 to 8486. [2023-12-22 01:39:16,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8486 states, 8484 states have (on average 1.505186232909005) internal successors, (12770), 8485 states have internal predecessors, (12770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:39:16,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8486 states to 8486 states and 12770 transitions. [2023-12-22 01:39:16,760 INFO L78 Accepts]: Start accepts. Automaton has 8486 states and 12770 transitions. Word has length 90 [2023-12-22 01:39:16,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:39:16,761 INFO L495 AbstractCegarLoop]: Abstraction has 8486 states and 12770 transitions. [2023-12-22 01:39:16,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:39:16,761 INFO L276 IsEmpty]: Start isEmpty. Operand 8486 states and 12770 transitions. [2023-12-22 01:39:16,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-22 01:39:16,762 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:39:16,762 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:39:16,782 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 [2023-12-22 01:39:16,965 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 [2023-12-22 01:39:16,966 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:39:16,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:39:16,966 INFO L85 PathProgramCache]: Analyzing trace with hash -83953657, now seen corresponding path program 1 times [2023-12-22 01:39:16,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:39:16,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [486403694] [2023-12-22 01:39:16,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:39:16,966 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 [2023-12-22 01:39:16,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:39:16,967 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) [2023-12-22 01:39:16,971 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 [2023-12-22 01:39:17,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:39:17,044 INFO L262 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-22 01:39:17,046 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:39:17,774 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:39:17,774 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:39:18,047 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:39:18,047 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:39:18,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [486403694] [2023-12-22 01:39:18,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [486403694] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:39:18,047 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:39:18,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-22 01:39:18,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551514060] [2023-12-22 01:39:18,047 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:39:18,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-22 01:39:18,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:39:18,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-22 01:39:18,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-22 01:39:18,048 INFO L87 Difference]: Start difference. First operand 8486 states and 12770 transitions. Second operand has 16 states, 16 states have (on average 10.5) internal successors, (168), 16 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:39:19,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:39:19,650 INFO L93 Difference]: Finished difference Result 27982 states and 40806 transitions. [2023-12-22 01:39:19,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-22 01:39:19,651 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 10.5) internal successors, (168), 16 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2023-12-22 01:39:19,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:39:19,670 INFO L225 Difference]: With dead ends: 27982 [2023-12-22 01:39:19,670 INFO L226 Difference]: Without dead ends: 21068 [2023-12-22 01:39:19,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=183, Invalid=573, Unknown=0, NotChecked=0, Total=756 [2023-12-22 01:39:19,675 INFO L413 NwaCegarLoop]: 1624 mSDtfsCounter, 5413 mSDsluCounter, 11066 mSDsCounter, 0 mSdLazyCounter, 950 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5413 SdHoareTripleChecker+Valid, 12690 SdHoareTripleChecker+Invalid, 962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 950 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-22 01:39:19,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5413 Valid, 12690 Invalid, 962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 950 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-22 01:39:19,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21068 states. [2023-12-22 01:39:20,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21068 to 15974. [2023-12-22 01:39:20,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15974 states, 15972 states have (on average 1.4576759328825444) internal successors, (23282), 15973 states have internal predecessors, (23282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:39:20,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15974 states to 15974 states and 23282 transitions. [2023-12-22 01:39:20,053 INFO L78 Accepts]: Start accepts. Automaton has 15974 states and 23282 transitions. Word has length 91 [2023-12-22 01:39:20,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:39:20,053 INFO L495 AbstractCegarLoop]: Abstraction has 15974 states and 23282 transitions. [2023-12-22 01:39:20,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 10.5) internal successors, (168), 16 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:39:20,053 INFO L276 IsEmpty]: Start isEmpty. Operand 15974 states and 23282 transitions. [2023-12-22 01:39:20,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-22 01:39:20,055 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:39:20,055 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:39:20,058 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 (17)] Ended with exit code 0 [2023-12-22 01:39:20,258 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 [2023-12-22 01:39:20,258 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:39:20,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:39:20,259 INFO L85 PathProgramCache]: Analyzing trace with hash -347175057, now seen corresponding path program 1 times [2023-12-22 01:39:20,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:39:20,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [118627313] [2023-12-22 01:39:20,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:39:20,259 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 [2023-12-22 01:39:20,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:39:20,260 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) [2023-12-22 01:39:20,262 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 [2023-12-22 01:39:20,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:39:20,341 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 01:39:20,342 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:39:20,381 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:39:20,381 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:39:20,381 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:39:20,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [118627313] [2023-12-22 01:39:20,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [118627313] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:39:20,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:39:20,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 01:39:20,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360401717] [2023-12-22 01:39:20,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:39:20,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 01:39:20,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:39:20,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 01:39:20,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:39:20,382 INFO L87 Difference]: Start difference. First operand 15974 states and 23282 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:39:20,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:39:20,562 INFO L93 Difference]: Finished difference Result 23178 states and 33556 transitions. [2023-12-22 01:39:20,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 01:39:20,562 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2023-12-22 01:39:20,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:39:20,569 INFO L225 Difference]: With dead ends: 23178 [2023-12-22 01:39:20,569 INFO L226 Difference]: Without dead ends: 8776 [2023-12-22 01:39:20,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:39:20,575 INFO L413 NwaCegarLoop]: 1593 mSDtfsCounter, 48 mSDsluCounter, 1529 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 3122 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 01:39:20,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 3122 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 01:39:20,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8776 states. [2023-12-22 01:39:20,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8776 to 8774. [2023-12-22 01:39:20,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8774 states, 8772 states have (on average 1.4721842225262198) internal successors, (12914), 8773 states have internal predecessors, (12914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:39:20,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8774 states to 8774 states and 12914 transitions. [2023-12-22 01:39:20,715 INFO L78 Accepts]: Start accepts. Automaton has 8774 states and 12914 transitions. Word has length 93 [2023-12-22 01:39:20,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:39:20,717 INFO L495 AbstractCegarLoop]: Abstraction has 8774 states and 12914 transitions. [2023-12-22 01:39:20,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:39:20,717 INFO L276 IsEmpty]: Start isEmpty. Operand 8774 states and 12914 transitions. [2023-12-22 01:39:20,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-22 01:39:20,718 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:39:20,718 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:39:20,738 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 (18)] Forceful destruction successful, exit code 0 [2023-12-22 01:39:20,921 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 [2023-12-22 01:39:20,922 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:39:20,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:39:20,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1917414592, now seen corresponding path program 1 times [2023-12-22 01:39:20,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:39:20,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2079568064] [2023-12-22 01:39:20,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:39:20,923 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 [2023-12-22 01:39:20,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:39:20,924 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) [2023-12-22 01:39:20,965 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 [2023-12-22 01:39:21,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:39:21,019 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-22 01:39:21,020 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:39:21,890 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:39:21,890 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:39:22,312 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:39:22,312 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:39:22,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2079568064] [2023-12-22 01:39:22,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2079568064] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:39:22,313 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:39:22,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-22 01:39:22,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337196776] [2023-12-22 01:39:22,313 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:39:22,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-22 01:39:22,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:39:22,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-22 01:39:22,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-22 01:39:22,314 INFO L87 Difference]: Start difference. First operand 8774 states and 12914 transitions. Second operand has 16 states, 16 states have (on average 11.0) internal successors, (176), 16 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) [2023-12-22 01:39:24,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:39:24,233 INFO L93 Difference]: Finished difference Result 28270 states and 40278 transitions. [2023-12-22 01:39:24,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-22 01:39:24,234 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 11.0) internal successors, (176), 16 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) Word has length 94 [2023-12-22 01:39:24,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:39:24,259 INFO L225 Difference]: With dead ends: 28270 [2023-12-22 01:39:24,262 INFO L226 Difference]: Without dead ends: 21068 [2023-12-22 01:39:24,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=183, Invalid=573, Unknown=0, NotChecked=0, Total=756 [2023-12-22 01:39:24,279 INFO L413 NwaCegarLoop]: 1606 mSDtfsCounter, 6676 mSDsluCounter, 12498 mSDsCounter, 0 mSdLazyCounter, 921 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6676 SdHoareTripleChecker+Valid, 14104 SdHoareTripleChecker+Invalid, 934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-22 01:39:24,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6676 Valid, 14104 Invalid, 934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 921 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-22 01:39:24,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21068 states. [2023-12-22 01:39:24,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21068 to 16550. [2023-12-22 01:39:24,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16550 states, 16548 states have (on average 1.4243413101281122) internal successors, (23570), 16549 states have internal predecessors, (23570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:39:24,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16550 states to 16550 states and 23570 transitions. [2023-12-22 01:39:24,848 INFO L78 Accepts]: Start accepts. Automaton has 16550 states and 23570 transitions. Word has length 94 [2023-12-22 01:39:24,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:39:24,848 INFO L495 AbstractCegarLoop]: Abstraction has 16550 states and 23570 transitions. [2023-12-22 01:39:24,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.0) internal successors, (176), 16 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) [2023-12-22 01:39:24,849 INFO L276 IsEmpty]: Start isEmpty. Operand 16550 states and 23570 transitions. [2023-12-22 01:39:24,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-22 01:39:24,850 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:39:24,850 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:39:24,855 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 [2023-12-22 01:39:25,053 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 [2023-12-22 01:39:25,053 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:39:25,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:39:25,054 INFO L85 PathProgramCache]: Analyzing trace with hash -32323404, now seen corresponding path program 1 times [2023-12-22 01:39:25,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:39:25,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [801669493] [2023-12-22 01:39:25,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:39:25,054 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 [2023-12-22 01:39:25,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:39:25,055 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) [2023-12-22 01:39:25,059 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 [2023-12-22 01:39:25,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:39:25,128 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 01:39:25,129 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:39:25,169 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:39:25,169 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:39:25,169 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:39:25,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [801669493] [2023-12-22 01:39:25,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [801669493] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:39:25,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:39:25,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 01:39:25,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479628264] [2023-12-22 01:39:25,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:39:25,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 01:39:25,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:39:25,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 01:39:25,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:39:25,171 INFO L87 Difference]: Start difference. First operand 16550 states and 23570 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:39:25,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:39:25,359 INFO L93 Difference]: Finished difference Result 24042 states and 33988 transitions. [2023-12-22 01:39:25,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 01:39:25,359 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2023-12-22 01:39:25,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:39:25,367 INFO L225 Difference]: With dead ends: 24042 [2023-12-22 01:39:25,367 INFO L226 Difference]: Without dead ends: 9064 [2023-12-22 01:39:25,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:39:25,372 INFO L413 NwaCegarLoop]: 1586 mSDtfsCounter, 44 mSDsluCounter, 1521 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 3107 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 01:39:25,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 3107 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 01:39:25,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9064 states. [2023-12-22 01:39:25,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9064 to 9062. [2023-12-22 01:39:25,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9062 states, 9060 states have (on average 1.441280353200883) internal successors, (13058), 9061 states have internal predecessors, (13058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:39:25,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9062 states to 9062 states and 13058 transitions. [2023-12-22 01:39:25,528 INFO L78 Accepts]: Start accepts. Automaton has 9062 states and 13058 transitions. Word has length 96 [2023-12-22 01:39:25,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:39:25,528 INFO L495 AbstractCegarLoop]: Abstraction has 9062 states and 13058 transitions. [2023-12-22 01:39:25,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:39:25,528 INFO L276 IsEmpty]: Start isEmpty. Operand 9062 states and 13058 transitions. [2023-12-22 01:39:25,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-22 01:39:25,529 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:39:25,529 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:39:25,537 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-12-22 01:39:25,732 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 [2023-12-22 01:39:25,733 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:39:25,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:39:25,733 INFO L85 PathProgramCache]: Analyzing trace with hash -707004005, now seen corresponding path program 1 times [2023-12-22 01:39:25,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:39:25,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1367038249] [2023-12-22 01:39:25,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:39:25,734 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 [2023-12-22 01:39:25,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:39:25,735 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) [2023-12-22 01:39:25,736 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 [2023-12-22 01:39:25,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:39:25,837 INFO L262 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-22 01:39:25,839 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:39:26,597 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:39:26,598 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:39:26,931 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:39:26,931 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:39:26,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1367038249] [2023-12-22 01:39:26,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1367038249] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:39:26,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:39:26,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-22 01:39:26,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441625537] [2023-12-22 01:39:26,932 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:39:26,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-22 01:39:26,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:39:26,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-22 01:39:26,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-22 01:39:26,936 INFO L87 Difference]: Start difference. First operand 9062 states and 13058 transitions. Second operand has 16 states, 16 states have (on average 11.5) internal successors, (184), 16 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:39:28,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:39:28,590 INFO L93 Difference]: Finished difference Result 28558 states and 39750 transitions. [2023-12-22 01:39:28,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-22 01:39:28,590 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 11.5) internal successors, (184), 16 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2023-12-22 01:39:28,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:39:28,614 INFO L225 Difference]: With dead ends: 28558 [2023-12-22 01:39:28,614 INFO L226 Difference]: Without dead ends: 21068 [2023-12-22 01:39:28,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=183, Invalid=573, Unknown=0, NotChecked=0, Total=756 [2023-12-22 01:39:28,619 INFO L413 NwaCegarLoop]: 1588 mSDtfsCounter, 3451 mSDsluCounter, 12420 mSDsCounter, 0 mSdLazyCounter, 837 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3451 SdHoareTripleChecker+Valid, 14008 SdHoareTripleChecker+Invalid, 846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-22 01:39:28,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3451 Valid, 14008 Invalid, 846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 837 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-22 01:39:28,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21068 states. [2023-12-22 01:39:28,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21068 to 17126. [2023-12-22 01:39:28,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17126 states, 17124 states have (on average 1.3932492408315813) internal successors, (23858), 17125 states have internal predecessors, (23858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:39:29,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17126 states to 17126 states and 23858 transitions. [2023-12-22 01:39:29,001 INFO L78 Accepts]: Start accepts. Automaton has 17126 states and 23858 transitions. Word has length 97 [2023-12-22 01:39:29,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:39:29,001 INFO L495 AbstractCegarLoop]: Abstraction has 17126 states and 23858 transitions. [2023-12-22 01:39:29,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.5) internal successors, (184), 16 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:39:29,001 INFO L276 IsEmpty]: Start isEmpty. Operand 17126 states and 23858 transitions. [2023-12-22 01:39:29,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-22 01:39:29,002 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:39:29,002 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:39:29,012 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-12-22 01:39:29,206 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 [2023-12-22 01:39:29,206 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:39:29,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:39:29,206 INFO L85 PathProgramCache]: Analyzing trace with hash 448673691, now seen corresponding path program 1 times [2023-12-22 01:39:29,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:39:29,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1017866584] [2023-12-22 01:39:29,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:39:29,207 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 [2023-12-22 01:39:29,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:39:29,208 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) [2023-12-22 01:39:29,210 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 [2023-12-22 01:39:29,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:39:29,290 INFO L262 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 01:39:29,291 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:39:29,345 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:39:29,345 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:39:29,345 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:39:29,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1017866584] [2023-12-22 01:39:29,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1017866584] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:39:29,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:39:29,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 01:39:29,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393692581] [2023-12-22 01:39:29,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:39:29,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 01:39:29,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:39:29,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 01:39:29,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:39:29,347 INFO L87 Difference]: Start difference. First operand 17126 states and 23858 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:39:29,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:39:29,565 INFO L93 Difference]: Finished difference Result 24906 states and 34420 transitions. [2023-12-22 01:39:29,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 01:39:29,566 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2023-12-22 01:39:29,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:39:29,576 INFO L225 Difference]: With dead ends: 24906 [2023-12-22 01:39:29,576 INFO L226 Difference]: Without dead ends: 9352 [2023-12-22 01:39:29,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:39:29,588 INFO L413 NwaCegarLoop]: 1579 mSDtfsCounter, 40 mSDsluCounter, 1513 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 3092 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 01:39:29,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 3092 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 01:39:29,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9352 states. [2023-12-22 01:39:29,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9352 to 9350. [2023-12-22 01:39:29,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9350 states, 9348 states have (on average 1.412280701754386) internal successors, (13202), 9349 states have internal predecessors, (13202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:39:29,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9350 states to 9350 states and 13202 transitions. [2023-12-22 01:39:29,791 INFO L78 Accepts]: Start accepts. Automaton has 9350 states and 13202 transitions. Word has length 99 [2023-12-22 01:39:29,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:39:29,791 INFO L495 AbstractCegarLoop]: Abstraction has 9350 states and 13202 transitions. [2023-12-22 01:39:29,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:39:29,791 INFO L276 IsEmpty]: Start isEmpty. Operand 9350 states and 13202 transitions. [2023-12-22 01:39:29,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-22 01:39:29,792 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:39:29,792 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:39:29,795 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 [2023-12-22 01:39:29,995 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 [2023-12-22 01:39:29,996 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:39:29,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:39:29,996 INFO L85 PathProgramCache]: Analyzing trace with hash 693347988, now seen corresponding path program 1 times [2023-12-22 01:39:29,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:39:29,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [402513850] [2023-12-22 01:39:29,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:39:29,997 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 [2023-12-22 01:39:29,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:39:29,998 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) [2023-12-22 01:39:29,999 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 (23)] Waiting until timeout for monitored process [2023-12-22 01:39:30,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:39:30,082 INFO L262 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-22 01:39:30,083 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:39:30,998 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:39:30,998 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:39:31,447 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:39:31,447 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:39:31,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [402513850] [2023-12-22 01:39:31,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [402513850] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:39:31,448 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:39:31,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-22 01:39:31,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453871545] [2023-12-22 01:39:31,448 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:39:31,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-22 01:39:31,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:39:31,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-22 01:39:31,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-22 01:39:31,449 INFO L87 Difference]: Start difference. First operand 9350 states and 13202 transitions. Second operand has 16 states, 16 states have (on average 12.0) internal successors, (192), 16 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:39:33,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:39:33,105 INFO L93 Difference]: Finished difference Result 28846 states and 39222 transitions. [2023-12-22 01:39:33,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-22 01:39:33,105 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 12.0) internal successors, (192), 16 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-22 01:39:33,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:39:33,128 INFO L225 Difference]: With dead ends: 28846 [2023-12-22 01:39:33,128 INFO L226 Difference]: Without dead ends: 21068 [2023-12-22 01:39:33,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=183, Invalid=573, Unknown=0, NotChecked=0, Total=756 [2023-12-22 01:39:33,134 INFO L413 NwaCegarLoop]: 1570 mSDtfsCounter, 6497 mSDsluCounter, 12391 mSDsCounter, 0 mSdLazyCounter, 803 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6497 SdHoareTripleChecker+Valid, 13961 SdHoareTripleChecker+Invalid, 814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-22 01:39:33,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6497 Valid, 13961 Invalid, 814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 803 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-22 01:39:33,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21068 states. [2023-12-22 01:39:33,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21068 to 17702. [2023-12-22 01:39:33,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17702 states, 17700 states have (on average 1.364180790960452) internal successors, (24146), 17701 states have internal predecessors, (24146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:39:33,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17702 states to 17702 states and 24146 transitions. [2023-12-22 01:39:33,635 INFO L78 Accepts]: Start accepts. Automaton has 17702 states and 24146 transitions. Word has length 100 [2023-12-22 01:39:33,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:39:33,635 INFO L495 AbstractCegarLoop]: Abstraction has 17702 states and 24146 transitions. [2023-12-22 01:39:33,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 12.0) internal successors, (192), 16 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:39:33,635 INFO L276 IsEmpty]: Start isEmpty. Operand 17702 states and 24146 transitions. [2023-12-22 01:39:33,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-22 01:39:33,637 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:39:33,637 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:39:33,640 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Ended with exit code 0 [2023-12-22 01:39:33,840 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 [2023-12-22 01:39:33,840 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:39:33,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:39:33,841 INFO L85 PathProgramCache]: Analyzing trace with hash 294723744, now seen corresponding path program 1 times [2023-12-22 01:39:33,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:39:33,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [643196870] [2023-12-22 01:39:33,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:39:33,841 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 [2023-12-22 01:39:33,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:39:33,843 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) [2023-12-22 01:39:33,845 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 [2023-12-22 01:39:33,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:39:33,949 INFO L262 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 01:39:33,951 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:39:34,004 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:39:34,004 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:39:34,004 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:39:34,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [643196870] [2023-12-22 01:39:34,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [643196870] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:39:34,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:39:34,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 01:39:34,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712120660] [2023-12-22 01:39:34,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:39:34,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 01:39:34,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:39:34,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 01:39:34,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:39:34,005 INFO L87 Difference]: Start difference. First operand 17702 states and 24146 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:39:34,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:39:34,252 INFO L93 Difference]: Finished difference Result 25674 states and 34682 transitions. [2023-12-22 01:39:34,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 01:39:34,252 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2023-12-22 01:39:34,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:39:34,262 INFO L225 Difference]: With dead ends: 25674 [2023-12-22 01:39:34,262 INFO L226 Difference]: Without dead ends: 9544 [2023-12-22 01:39:34,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:39:34,272 INFO L413 NwaCegarLoop]: 1572 mSDtfsCounter, 36 mSDsluCounter, 1505 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 3077 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 01:39:34,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 3077 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 01:39:34,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9544 states. [2023-12-22 01:39:34,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9544 to 9542. [2023-12-22 01:39:34,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9542 states, 9540 states have (on average 1.3812368972746332) internal successors, (13177), 9541 states have internal predecessors, (13177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:39:34,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9542 states to 9542 states and 13177 transitions. [2023-12-22 01:39:34,483 INFO L78 Accepts]: Start accepts. Automaton has 9542 states and 13177 transitions. Word has length 102 [2023-12-22 01:39:34,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:39:34,483 INFO L495 AbstractCegarLoop]: Abstraction has 9542 states and 13177 transitions. [2023-12-22 01:39:34,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:39:34,484 INFO L276 IsEmpty]: Start isEmpty. Operand 9542 states and 13177 transitions. [2023-12-22 01:39:34,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-22 01:39:34,485 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:39:34,485 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:39:34,491 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 [2023-12-22 01:39:34,688 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 [2023-12-22 01:39:34,688 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:39:34,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:39:34,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1104600367, now seen corresponding path program 1 times [2023-12-22 01:39:34,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:39:34,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [575597066] [2023-12-22 01:39:34,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:39:34,689 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:39:34,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:39:34,690 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) [2023-12-22 01:39:34,692 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 [2023-12-22 01:39:34,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:39:34,787 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-22 01:39:34,789 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:39:35,538 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:39:35,539 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:39:35,864 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:39:35,865 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:39:35,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [575597066] [2023-12-22 01:39:35,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [575597066] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:39:35,865 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:39:35,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-22 01:39:35,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671988540] [2023-12-22 01:39:35,865 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:39:35,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-22 01:39:35,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:39:35,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-22 01:39:35,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-22 01:39:35,866 INFO L87 Difference]: Start difference. First operand 9542 states and 13177 transitions. Second operand has 16 states, 16 states have (on average 12.5) internal successors, (200), 16 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) [2023-12-22 01:39:37,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:39:37,330 INFO L93 Difference]: Finished difference Result 24292 states and 32302 transitions. [2023-12-22 01:39:37,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-22 01:39:37,330 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 12.5) internal successors, (200), 16 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) Word has length 103 [2023-12-22 01:39:37,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:39:37,347 INFO L225 Difference]: With dead ends: 24292 [2023-12-22 01:39:37,347 INFO L226 Difference]: Without dead ends: 16322 [2023-12-22 01:39:37,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=168, Invalid=534, Unknown=0, NotChecked=0, Total=702 [2023-12-22 01:39:37,356 INFO L413 NwaCegarLoop]: 1552 mSDtfsCounter, 4816 mSDsluCounter, 10720 mSDsCounter, 0 mSdLazyCounter, 595 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4816 SdHoareTripleChecker+Valid, 12272 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-22 01:39:37,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4816 Valid, 12272 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 595 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-22 01:39:37,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16322 states. [2023-12-22 01:39:37,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16322 to 15200. [2023-12-22 01:39:37,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15200 states, 15198 states have (on average 1.338794578233978) internal successors, (20347), 15199 states have internal predecessors, (20347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:39:37,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15200 states to 15200 states and 20347 transitions. [2023-12-22 01:39:37,812 INFO L78 Accepts]: Start accepts. Automaton has 15200 states and 20347 transitions. Word has length 103 [2023-12-22 01:39:37,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:39:37,813 INFO L495 AbstractCegarLoop]: Abstraction has 15200 states and 20347 transitions. [2023-12-22 01:39:37,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 12.5) internal successors, (200), 16 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) [2023-12-22 01:39:37,813 INFO L276 IsEmpty]: Start isEmpty. Operand 15200 states and 20347 transitions. [2023-12-22 01:39:37,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-22 01:39:37,814 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:39:37,815 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:39:37,818 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 [2023-12-22 01:39:38,017 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 [2023-12-22 01:39:38,018 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:39:38,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:39:38,018 INFO L85 PathProgramCache]: Analyzing trace with hash -256059961, now seen corresponding path program 1 times [2023-12-22 01:39:38,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:39:38,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [275182713] [2023-12-22 01:39:38,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:39:38,019 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 [2023-12-22 01:39:38,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:39:38,020 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) [2023-12-22 01:39:38,023 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 [2023-12-22 01:39:38,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:39:38,137 INFO L262 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 01:39:38,139 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:39:38,289 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-22 01:39:38,289 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:39:38,461 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-22 01:39:38,461 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:39:38,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [275182713] [2023-12-22 01:39:38,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [275182713] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:39:38,461 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:39:38,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-12-22 01:39:38,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494866770] [2023-12-22 01:39:38,461 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:39:38,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-22 01:39:38,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:39:38,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-22 01:39:38,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-22 01:39:38,462 INFO L87 Difference]: Start difference. First operand 15200 states and 20347 transitions. Second operand has 6 states, 6 states have (on average 33.5) internal successors, (201), 6 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:39:39,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:39:39,552 INFO L93 Difference]: Finished difference Result 54344 states and 70101 transitions. [2023-12-22 01:39:39,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-22 01:39:39,552 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 33.5) internal successors, (201), 6 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2023-12-22 01:39:39,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:39:39,599 INFO L225 Difference]: With dead ends: 54344 [2023-12-22 01:39:39,599 INFO L226 Difference]: Without dead ends: 40716 [2023-12-22 01:39:39,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-12-22 01:39:39,608 INFO L413 NwaCegarLoop]: 1573 mSDtfsCounter, 3079 mSDsluCounter, 1757 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3079 SdHoareTripleChecker+Valid, 3330 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 01:39:39,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3079 Valid, 3330 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 01:39:39,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40716 states. [2023-12-22 01:39:40,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40716 to 40554. [2023-12-22 01:39:40,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40554 states, 40552 states have (on average 1.2467695797987768) internal successors, (50559), 40553 states have internal predecessors, (50559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:39:41,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40554 states to 40554 states and 50559 transitions. [2023-12-22 01:39:41,025 INFO L78 Accepts]: Start accepts. Automaton has 40554 states and 50559 transitions. Word has length 105 [2023-12-22 01:39:41,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:39:41,025 INFO L495 AbstractCegarLoop]: Abstraction has 40554 states and 50559 transitions. [2023-12-22 01:39:41,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 33.5) internal successors, (201), 6 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:39:41,025 INFO L276 IsEmpty]: Start isEmpty. Operand 40554 states and 50559 transitions. [2023-12-22 01:39:41,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-22 01:39:41,033 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:39:41,033 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:39:41,039 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 [2023-12-22 01:39:41,237 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 [2023-12-22 01:39:41,237 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:39:41,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:39:41,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1056862304, now seen corresponding path program 1 times [2023-12-22 01:39:41,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:39:41,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1860247887] [2023-12-22 01:39:41,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:39:41,238 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 [2023-12-22 01:39:41,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:39:41,239 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) [2023-12-22 01:39:41,240 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 [2023-12-22 01:39:41,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:39:41,324 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 01:39:41,326 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:39:41,565 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:39:41,566 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:39:41,566 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:39:41,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1860247887] [2023-12-22 01:39:41,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1860247887] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:39:41,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:39:41,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 01:39:41,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284909672] [2023-12-22 01:39:41,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:39:41,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 01:39:41,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:39:41,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 01:39:41,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:39:41,567 INFO L87 Difference]: Start difference. First operand 40554 states and 50559 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:40:14,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:40:14,822 INFO L93 Difference]: Finished difference Result 42809 states and 54458 transitions. [2023-12-22 01:40:14,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 01:40:14,822 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2023-12-22 01:40:14,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:40:14,861 INFO L225 Difference]: With dead ends: 42809 [2023-12-22 01:40:14,862 INFO L226 Difference]: Without dead ends: 41305 [2023-12-22 01:40:14,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:40:14,868 INFO L413 NwaCegarLoop]: 698 mSDtfsCounter, 812 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2298 mSolverCounterSat, 362 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 812 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 2660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 362 IncrementalHoareTripleChecker+Valid, 2298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.9s IncrementalHoareTripleChecker+Time [2023-12-22 01:40:14,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [812 Valid, 705 Invalid, 2660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [362 Valid, 2298 Invalid, 0 Unknown, 0 Unchecked, 31.9s Time] [2023-12-22 01:40:14,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41305 states. [2023-12-22 01:40:16,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41305 to 41305. [2023-12-22 01:40:16,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41305 states, 41303 states have (on average 1.2451880008716074) internal successors, (51430), 41304 states have internal predecessors, (51430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:40:16,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41305 states to 41305 states and 51430 transitions. [2023-12-22 01:40:16,272 INFO L78 Accepts]: Start accepts. Automaton has 41305 states and 51430 transitions. Word has length 125 [2023-12-22 01:40:16,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:40:16,273 INFO L495 AbstractCegarLoop]: Abstraction has 41305 states and 51430 transitions. [2023-12-22 01:40:16,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:40:16,273 INFO L276 IsEmpty]: Start isEmpty. Operand 41305 states and 51430 transitions. [2023-12-22 01:40:16,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-22 01:40:16,276 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:40:16,276 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:40:16,281 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 [2023-12-22 01:40:16,479 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 [2023-12-22 01:40:16,479 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:40:16,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:40:16,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1504862956, now seen corresponding path program 1 times [2023-12-22 01:40:16,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:40:16,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [420646594] [2023-12-22 01:40:16,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:40:16,480 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:40:16,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:40:16,481 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) [2023-12-22 01:40:16,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2023-12-22 01:40:16,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:40:16,629 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 01:40:16,631 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:40:16,754 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:40:16,755 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:40:16,755 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:40:16,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [420646594] [2023-12-22 01:40:16,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [420646594] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:40:16,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:40:16,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 01:40:16,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265040285] [2023-12-22 01:40:16,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:40:16,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 01:40:16,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:40:16,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 01:40:16,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:40:16,756 INFO L87 Difference]: Start difference. First operand 41305 states and 51430 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:40:57,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:40:57,367 INFO L93 Difference]: Finished difference Result 45813 states and 58507 transitions. [2023-12-22 01:40:57,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 01:40:57,368 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2023-12-22 01:40:57,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:40:57,417 INFO L225 Difference]: With dead ends: 45813 [2023-12-22 01:40:57,417 INFO L226 Difference]: Without dead ends: 43558 [2023-12-22 01:40:57,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 01:40:57,426 INFO L413 NwaCegarLoop]: 758 mSDtfsCounter, 821 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2440 mSolverCounterSat, 590 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 821 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 3030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 590 IncrementalHoareTripleChecker+Valid, 2440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.4s IncrementalHoareTripleChecker+Time [2023-12-22 01:40:57,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [821 Valid, 765 Invalid, 3030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [590 Valid, 2440 Invalid, 0 Unknown, 0 Unchecked, 39.4s Time] [2023-12-22 01:40:57,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43558 states. [2023-12-22 01:40:58,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43558 to 43558. [2023-12-22 01:40:58,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43558 states, 43556 states have (on average 1.2446276058407568) internal successors, (54211), 43557 states have internal predecessors, (54211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:40:58,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43558 states to 43558 states and 54211 transitions. [2023-12-22 01:40:58,771 INFO L78 Accepts]: Start accepts. Automaton has 43558 states and 54211 transitions. Word has length 126 [2023-12-22 01:40:58,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:40:58,771 INFO L495 AbstractCegarLoop]: Abstraction has 43558 states and 54211 transitions. [2023-12-22 01:40:58,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:40:58,771 INFO L276 IsEmpty]: Start isEmpty. Operand 43558 states and 54211 transitions. [2023-12-22 01:40:58,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-22 01:40:58,774 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:40:58,774 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:40:58,780 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 [2023-12-22 01:40:58,977 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 [2023-12-22 01:40:58,978 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:40:58,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:40:58,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1163099535, now seen corresponding path program 1 times [2023-12-22 01:40:58,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:40:58,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1552222791] [2023-12-22 01:40:58,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:40:58,979 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 [2023-12-22 01:40:58,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:40:58,980 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) [2023-12-22 01:40:58,982 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 [2023-12-22 01:40:59,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:40:59,066 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-22 01:40:59,067 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:40:59,777 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 33 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:40:59,778 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:41:00,280 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 33 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:41:00,280 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:41:00,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1552222791] [2023-12-22 01:41:00,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1552222791] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:41:00,280 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:41:00,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-12-22 01:41:00,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35018819] [2023-12-22 01:41:00,280 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:41:00,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-22 01:41:00,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:41:00,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-22 01:41:00,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-12-22 01:41:00,281 INFO L87 Difference]: Start difference. First operand 43558 states and 54211 transitions. Second operand has 7 states, 7 states have (on average 33.857142857142854) internal successors, (237), 6 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:42:42,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:42:42,137 INFO L93 Difference]: Finished difference Result 56400 states and 73489 transitions. [2023-12-22 01:42:42,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-22 01:42:42,150 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 33.857142857142854) internal successors, (237), 6 states have internal predecessors, (237), 0 states have call successors, (0), 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 131 [2023-12-22 01:42:42,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:42:42,207 INFO L225 Difference]: With dead ends: 56400 [2023-12-22 01:42:42,207 INFO L226 Difference]: Without dead ends: 51892 [2023-12-22 01:42:42,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2023-12-22 01:42:42,216 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 6105 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 7857 mSolverCounterSat, 3070 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 82.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6105 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 10927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3070 IncrementalHoareTripleChecker+Valid, 7857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 100.2s IncrementalHoareTripleChecker+Time [2023-12-22 01:42:42,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6105 Valid, 360 Invalid, 10927 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3070 Valid, 7857 Invalid, 0 Unknown, 0 Unchecked, 100.2s Time] [2023-12-22 01:42:42,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51892 states. [2023-12-22 01:42:43,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51892 to 50317. [2023-12-22 01:42:43,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50317 states, 50315 states have (on average 1.2422935506310246) internal successors, (62506), 50316 states have internal predecessors, (62506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:42:43,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50317 states to 50317 states and 62506 transitions. [2023-12-22 01:42:43,742 INFO L78 Accepts]: Start accepts. Automaton has 50317 states and 62506 transitions. Word has length 131 [2023-12-22 01:42:43,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:42:43,742 INFO L495 AbstractCegarLoop]: Abstraction has 50317 states and 62506 transitions. [2023-12-22 01:42:43,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 33.857142857142854) internal successors, (237), 6 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:42:43,743 INFO L276 IsEmpty]: Start isEmpty. Operand 50317 states and 62506 transitions. [2023-12-22 01:42:43,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-22 01:42:43,752 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:42:43,752 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:42:43,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2023-12-22 01:42:43,954 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 [2023-12-22 01:42:43,954 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:42:43,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:42:43,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1293988137, now seen corresponding path program 1 times [2023-12-22 01:42:43,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:42:43,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1117521405] [2023-12-22 01:42:43,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:42:43,955 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 [2023-12-22 01:42:43,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:42:43,957 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) [2023-12-22 01:42:43,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2023-12-22 01:42:44,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:42:44,073 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-22 01:42:44,076 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:42:45,415 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 54 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:42:45,415 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:42:46,032 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 54 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:42:46,032 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:42:46,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1117521405] [2023-12-22 01:42:46,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1117521405] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:42:46,032 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:42:46,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-22 01:42:46,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995310491] [2023-12-22 01:42:46,033 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:42:46,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 01:42:46,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:42:46,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 01:42:46,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-12-22 01:42:46,034 INFO L87 Difference]: Start difference. First operand 50317 states and 62506 transitions. Second operand has 26 states, 26 states have (on average 11.076923076923077) internal successors, (288), 25 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:42:49,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:42:49,379 INFO L93 Difference]: Finished difference Result 76563 states and 95001 transitions. [2023-12-22 01:42:49,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-22 01:42:49,380 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 11.076923076923077) internal successors, (288), 25 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 158 [2023-12-22 01:42:49,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:42:49,445 INFO L225 Difference]: With dead ends: 76563 [2023-12-22 01:42:49,445 INFO L226 Difference]: Without dead ends: 50759 [2023-12-22 01:42:49,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=383, Invalid=1423, Unknown=0, NotChecked=0, Total=1806 [2023-12-22 01:42:49,457 INFO L413 NwaCegarLoop]: 1546 mSDtfsCounter, 13693 mSDsluCounter, 8154 mSDsCounter, 0 mSdLazyCounter, 1005 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13693 SdHoareTripleChecker+Valid, 9700 SdHoareTripleChecker+Invalid, 1022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-22 01:42:49,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13693 Valid, 9700 Invalid, 1022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1005 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-22 01:42:49,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50759 states. [2023-12-22 01:42:51,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50759 to 50317. [2023-12-22 01:42:51,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50317 states, 50315 states have (on average 1.2334492696015105) internal successors, (62061), 50316 states have internal predecessors, (62061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:42:51,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50317 states to 50317 states and 62061 transitions. [2023-12-22 01:42:51,304 INFO L78 Accepts]: Start accepts. Automaton has 50317 states and 62061 transitions. Word has length 158 [2023-12-22 01:42:51,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:42:51,304 INFO L495 AbstractCegarLoop]: Abstraction has 50317 states and 62061 transitions. [2023-12-22 01:42:51,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 11.076923076923077) internal successors, (288), 25 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:42:51,304 INFO L276 IsEmpty]: Start isEmpty. Operand 50317 states and 62061 transitions. [2023-12-22 01:42:51,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-12-22 01:42:51,312 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:42:51,313 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:42:51,317 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 (30)] Ended with exit code 0 [2023-12-22 01:42:51,517 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 [2023-12-22 01:42:51,518 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:42:51,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:42:51,518 INFO L85 PathProgramCache]: Analyzing trace with hash 842727390, now seen corresponding path program 1 times [2023-12-22 01:42:51,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:42:51,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1578304693] [2023-12-22 01:42:51,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:42:51,518 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 [2023-12-22 01:42:51,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:42:51,521 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) [2023-12-22 01:42:51,521 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 (31)] Waiting until timeout for monitored process [2023-12-22 01:42:51,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:42:51,648 INFO L262 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-22 01:42:51,651 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:42:52,787 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 46 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:42:52,787 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:42:53,253 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 46 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:42:53,253 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:42:53,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1578304693] [2023-12-22 01:42:53,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1578304693] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:42:53,254 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:42:53,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-22 01:42:53,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310140553] [2023-12-22 01:42:53,254 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:42:53,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 01:42:53,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:42:53,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 01:42:53,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-12-22 01:42:53,255 INFO L87 Difference]: Start difference. First operand 50317 states and 62061 transitions. Second operand has 26 states, 26 states have (on average 11.307692307692308) internal successors, (294), 25 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:42:56,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:42:56,573 INFO L93 Difference]: Finished difference Result 75089 states and 92812 transitions. [2023-12-22 01:42:56,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-22 01:42:56,574 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 11.307692307692308) internal successors, (294), 25 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 159 [2023-12-22 01:42:56,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:42:56,640 INFO L225 Difference]: With dead ends: 75089 [2023-12-22 01:42:56,641 INFO L226 Difference]: Without dead ends: 57951 [2023-12-22 01:42:56,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=417, Invalid=1563, Unknown=0, NotChecked=0, Total=1980 [2023-12-22 01:42:56,656 INFO L413 NwaCegarLoop]: 1546 mSDtfsCounter, 16606 mSDsluCounter, 9651 mSDsCounter, 0 mSdLazyCounter, 1050 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16606 SdHoareTripleChecker+Valid, 11197 SdHoareTripleChecker+Invalid, 1069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-22 01:42:56,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16606 Valid, 11197 Invalid, 1069 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1050 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-22 01:42:56,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57951 states. [2023-12-22 01:42:58,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57951 to 50317. [2023-12-22 01:42:58,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50317 states, 50315 states have (on average 1.2293153135247938) internal successors, (61853), 50316 states have internal predecessors, (61853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:42:58,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50317 states to 50317 states and 61853 transitions. [2023-12-22 01:42:58,682 INFO L78 Accepts]: Start accepts. Automaton has 50317 states and 61853 transitions. Word has length 159 [2023-12-22 01:42:58,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:42:58,682 INFO L495 AbstractCegarLoop]: Abstraction has 50317 states and 61853 transitions. [2023-12-22 01:42:58,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 11.307692307692308) internal successors, (294), 25 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:42:58,683 INFO L276 IsEmpty]: Start isEmpty. Operand 50317 states and 61853 transitions. [2023-12-22 01:42:58,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-12-22 01:42:58,692 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:42:58,692 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:42:58,699 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2023-12-22 01:42:58,896 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 [2023-12-22 01:42:58,896 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:42:58,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:42:58,905 INFO L85 PathProgramCache]: Analyzing trace with hash -762696889, now seen corresponding path program 1 times [2023-12-22 01:42:58,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:42:58,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2072000835] [2023-12-22 01:42:58,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:42:58,906 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 [2023-12-22 01:42:58,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:42:58,907 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) [2023-12-22 01:42:58,908 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 [2023-12-22 01:42:59,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:42:59,032 INFO L262 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-22 01:42:59,034 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:43:00,728 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 38 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:43:00,728 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:43:01,110 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 38 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:43:01,110 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:43:01,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2072000835] [2023-12-22 01:43:01,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2072000835] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:43:01,110 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:43:01,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-22 01:43:01,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975950314] [2023-12-22 01:43:01,111 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:43:01,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 01:43:01,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:43:01,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 01:43:01,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-12-22 01:43:01,112 INFO L87 Difference]: Start difference. First operand 50317 states and 61853 transitions. Second operand has 26 states, 26 states have (on average 11.538461538461538) internal successors, (300), 25 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:43:04,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:43:04,383 INFO L93 Difference]: Finished difference Result 73001 states and 89848 transitions. [2023-12-22 01:43:04,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-22 01:43:04,384 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 11.538461538461538) internal successors, (300), 25 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2023-12-22 01:43:04,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:43:04,457 INFO L225 Difference]: With dead ends: 73001 [2023-12-22 01:43:04,457 INFO L226 Difference]: Without dead ends: 56319 [2023-12-22 01:43:04,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=416, Invalid=1564, Unknown=0, NotChecked=0, Total=1980 [2023-12-22 01:43:04,475 INFO L413 NwaCegarLoop]: 1546 mSDtfsCounter, 16657 mSDsluCounter, 6458 mSDsCounter, 0 mSdLazyCounter, 819 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16657 SdHoareTripleChecker+Valid, 8004 SdHoareTripleChecker+Invalid, 837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-22 01:43:04,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16657 Valid, 8004 Invalid, 837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 819 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-22 01:43:04,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56319 states. [2023-12-22 01:43:06,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56319 to 50317. [2023-12-22 01:43:06,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50317 states, 50315 states have (on average 1.225022359137434) internal successors, (61637), 50316 states have internal predecessors, (61637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:43:06,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50317 states to 50317 states and 61637 transitions. [2023-12-22 01:43:06,778 INFO L78 Accepts]: Start accepts. Automaton has 50317 states and 61637 transitions. Word has length 160 [2023-12-22 01:43:06,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:43:06,778 INFO L495 AbstractCegarLoop]: Abstraction has 50317 states and 61637 transitions. [2023-12-22 01:43:06,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 11.538461538461538) internal successors, (300), 25 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:43:06,779 INFO L276 IsEmpty]: Start isEmpty. Operand 50317 states and 61637 transitions. [2023-12-22 01:43:06,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-22 01:43:06,789 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:43:06,789 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:43:06,792 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 (32)] Ended with exit code 0 [2023-12-22 01:43:06,992 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 [2023-12-22 01:43:06,993 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:43:06,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:43:06,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1721856142, now seen corresponding path program 1 times [2023-12-22 01:43:06,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:43:06,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [870005578] [2023-12-22 01:43:06,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:43:06,994 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 [2023-12-22 01:43:06,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:43:06,995 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) [2023-12-22 01:43:06,996 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 [2023-12-22 01:43:07,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:43:07,161 INFO L262 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-22 01:43:07,163 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:43:08,675 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 30 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:43:08,675 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:43:09,082 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 30 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:43:09,083 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:43:09,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [870005578] [2023-12-22 01:43:09,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [870005578] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:43:09,083 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:43:09,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-22 01:43:09,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482379200] [2023-12-22 01:43:09,083 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:43:09,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 01:43:09,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:43:09,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 01:43:09,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-12-22 01:43:09,086 INFO L87 Difference]: Start difference. First operand 50317 states and 61637 transitions. Second operand has 26 states, 26 states have (on average 11.76923076923077) internal successors, (306), 25 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:43:13,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:43:13,159 INFO L93 Difference]: Finished difference Result 70673 states and 86572 transitions. [2023-12-22 01:43:13,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-22 01:43:13,159 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 11.76923076923077) internal successors, (306), 25 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2023-12-22 01:43:13,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:43:13,228 INFO L225 Difference]: With dead ends: 70673 [2023-12-22 01:43:13,229 INFO L226 Difference]: Without dead ends: 54519 [2023-12-22 01:43:13,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=416, Invalid=1564, Unknown=0, NotChecked=0, Total=1980 [2023-12-22 01:43:13,241 INFO L413 NwaCegarLoop]: 1546 mSDtfsCounter, 17026 mSDsluCounter, 9642 mSDsCounter, 0 mSdLazyCounter, 1067 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17026 SdHoareTripleChecker+Valid, 11188 SdHoareTripleChecker+Invalid, 1091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-22 01:43:13,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17026 Valid, 11188 Invalid, 1091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1067 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-22 01:43:13,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54519 states. [2023-12-22 01:43:15,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54519 to 50317. [2023-12-22 01:43:15,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50317 states, 50315 states have (on average 1.220649905594753) internal successors, (61417), 50316 states have internal predecessors, (61417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:43:15,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50317 states to 50317 states and 61417 transitions. [2023-12-22 01:43:15,593 INFO L78 Accepts]: Start accepts. Automaton has 50317 states and 61417 transitions. Word has length 161 [2023-12-22 01:43:15,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:43:15,593 INFO L495 AbstractCegarLoop]: Abstraction has 50317 states and 61417 transitions. [2023-12-22 01:43:15,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 11.76923076923077) internal successors, (306), 25 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:43:15,593 INFO L276 IsEmpty]: Start isEmpty. Operand 50317 states and 61417 transitions. [2023-12-22 01:43:15,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-22 01:43:15,601 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:43:15,601 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:43:15,605 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 [2023-12-22 01:43:15,805 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 [2023-12-22 01:43:15,805 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:43:15,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:43:15,806 INFO L85 PathProgramCache]: Analyzing trace with hash -677109833, now seen corresponding path program 1 times [2023-12-22 01:43:15,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:43:15,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1587251404] [2023-12-22 01:43:15,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:43:15,806 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 [2023-12-22 01:43:15,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:43:15,807 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) [2023-12-22 01:43:15,827 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 [2023-12-22 01:43:15,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:43:15,925 INFO L262 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-22 01:43:15,928 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:43:17,274 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 22 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:43:17,275 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:43:17,843 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 22 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:43:17,843 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:43:17,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1587251404] [2023-12-22 01:43:17,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1587251404] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:43:17,843 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:43:17,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-22 01:43:17,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644244026] [2023-12-22 01:43:17,843 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:43:17,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 01:43:17,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:43:17,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 01:43:17,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-12-22 01:43:17,844 INFO L87 Difference]: Start difference. First operand 50317 states and 61417 transitions. Second operand has 26 states, 26 states have (on average 12.0) internal successors, (312), 25 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:43:21,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:43:21,497 INFO L93 Difference]: Finished difference Result 68231 states and 83147 transitions. [2023-12-22 01:43:21,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-22 01:43:21,497 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 12.0) internal successors, (312), 25 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 162 [2023-12-22 01:43:21,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:43:21,576 INFO L225 Difference]: With dead ends: 68231 [2023-12-22 01:43:21,576 INFO L226 Difference]: Without dead ends: 52635 [2023-12-22 01:43:21,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=416, Invalid=1564, Unknown=0, NotChecked=0, Total=1980 [2023-12-22 01:43:21,597 INFO L413 NwaCegarLoop]: 1546 mSDtfsCounter, 16629 mSDsluCounter, 8083 mSDsCounter, 0 mSdLazyCounter, 970 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16629 SdHoareTripleChecker+Valid, 9629 SdHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-22 01:43:21,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16629 Valid, 9629 Invalid, 989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 970 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-22 01:43:21,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52635 states. [2023-12-22 01:43:23,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52635 to 50317. [2023-12-22 01:43:24,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50317 states, 50315 states have (on average 1.2162377024744113) internal successors, (61195), 50316 states have internal predecessors, (61195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:43:24,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50317 states to 50317 states and 61195 transitions. [2023-12-22 01:43:24,098 INFO L78 Accepts]: Start accepts. Automaton has 50317 states and 61195 transitions. Word has length 162 [2023-12-22 01:43:24,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:43:24,098 INFO L495 AbstractCegarLoop]: Abstraction has 50317 states and 61195 transitions. [2023-12-22 01:43:24,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 12.0) internal successors, (312), 25 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:43:24,098 INFO L276 IsEmpty]: Start isEmpty. Operand 50317 states and 61195 transitions. [2023-12-22 01:43:24,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-22 01:43:24,109 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:43:24,109 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:43:24,115 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 [2023-12-22 01:43:24,313 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 [2023-12-22 01:43:24,314 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:43:24,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:43:24,314 INFO L85 PathProgramCache]: Analyzing trace with hash 339536190, now seen corresponding path program 1 times [2023-12-22 01:43:24,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:43:24,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1930910343] [2023-12-22 01:43:24,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:43:24,315 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 [2023-12-22 01:43:24,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:43:24,317 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) [2023-12-22 01:43:24,318 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 [2023-12-22 01:43:24,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:43:24,446 INFO L262 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-22 01:43:24,449 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:43:26,263 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 13 proven. 115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:43:26,263 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:43:26,919 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 13 proven. 115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:43:26,919 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:43:26,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1930910343] [2023-12-22 01:43:26,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1930910343] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:43:26,920 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:43:26,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-22 01:43:26,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576343829] [2023-12-22 01:43:26,920 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:43:26,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 01:43:26,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:43:26,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 01:43:26,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-22 01:43:26,921 INFO L87 Difference]: Start difference. First operand 50317 states and 61195 transitions. Second operand has 26 states, 26 states have (on average 12.307692307692308) internal successors, (320), 26 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:43:33,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:43:33,283 INFO L93 Difference]: Finished difference Result 76325 states and 91943 transitions. [2023-12-22 01:43:33,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-12-22 01:43:33,283 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 12.307692307692308) internal successors, (320), 26 states have internal predecessors, (320), 0 states have call successors, (0), 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 163 [2023-12-22 01:43:33,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:43:33,349 INFO L225 Difference]: With dead ends: 76325 [2023-12-22 01:43:33,349 INFO L226 Difference]: Without dead ends: 58147 [2023-12-22 01:43:33,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 300 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 939 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=760, Invalid=3796, Unknown=0, NotChecked=0, Total=4556 [2023-12-22 01:43:33,362 INFO L413 NwaCegarLoop]: 1641 mSDtfsCounter, 5425 mSDsluCounter, 19011 mSDsCounter, 0 mSdLazyCounter, 1932 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5425 SdHoareTripleChecker+Valid, 20652 SdHoareTripleChecker+Invalid, 1953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1932 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-22 01:43:33,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5425 Valid, 20652 Invalid, 1953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1932 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-22 01:43:33,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58147 states. [2023-12-22 01:43:35,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58147 to 35595. [2023-12-22 01:43:35,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35595 states, 35593 states have (on average 1.2235832888489309) internal successors, (43551), 35594 states have internal predecessors, (43551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:43:35,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35595 states to 35595 states and 43551 transitions. [2023-12-22 01:43:35,131 INFO L78 Accepts]: Start accepts. Automaton has 35595 states and 43551 transitions. Word has length 163 [2023-12-22 01:43:35,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:43:35,131 INFO L495 AbstractCegarLoop]: Abstraction has 35595 states and 43551 transitions. [2023-12-22 01:43:35,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 12.307692307692308) internal successors, (320), 26 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:43:35,132 INFO L276 IsEmpty]: Start isEmpty. Operand 35595 states and 43551 transitions. [2023-12-22 01:43:35,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-22 01:43:35,135 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:43:35,135 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:43:35,142 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 [2023-12-22 01:43:35,336 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 [2023-12-22 01:43:35,336 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:43:35,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:43:35,337 INFO L85 PathProgramCache]: Analyzing trace with hash 694241762, now seen corresponding path program 1 times [2023-12-22 01:43:35,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:43:35,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1331816435] [2023-12-22 01:43:35,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:43:35,337 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 [2023-12-22 01:43:35,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:43:35,338 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) [2023-12-22 01:43:35,340 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 [2023-12-22 01:43:35,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:43:35,471 INFO L262 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-22 01:43:35,474 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:43:37,063 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 22 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:43:37,064 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:43:37,717 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 22 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:43:37,717 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:43:37,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1331816435] [2023-12-22 01:43:37,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1331816435] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:43:37,718 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:43:37,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-22 01:43:37,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985320247] [2023-12-22 01:43:37,718 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:43:37,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 01:43:37,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:43:37,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 01:43:37,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-22 01:43:37,719 INFO L87 Difference]: Start difference. First operand 35595 states and 43551 transitions. Second operand has 26 states, 26 states have (on average 12.115384615384615) internal successors, (315), 26 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:43:45,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:43:45,794 INFO L93 Difference]: Finished difference Result 54075 states and 65592 transitions. [2023-12-22 01:43:45,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-22 01:43:45,795 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 12.115384615384615) internal successors, (315), 26 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 163 [2023-12-22 01:43:45,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:43:45,846 INFO L225 Difference]: With dead ends: 54075 [2023-12-22 01:43:45,846 INFO L226 Difference]: Without dead ends: 48745 [2023-12-22 01:43:45,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 300 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1010 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=804, Invalid=4026, Unknown=0, NotChecked=0, Total=4830 [2023-12-22 01:43:45,856 INFO L413 NwaCegarLoop]: 1655 mSDtfsCounter, 5094 mSDsluCounter, 28733 mSDsCounter, 0 mSdLazyCounter, 2934 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5094 SdHoareTripleChecker+Valid, 30388 SdHoareTripleChecker+Invalid, 2951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-22 01:43:45,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5094 Valid, 30388 Invalid, 2951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2934 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-22 01:43:45,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48745 states. [2023-12-22 01:43:47,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48745 to 42821. [2023-12-22 01:43:47,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42821 states, 42819 states have (on average 1.2169597608538265) internal successors, (52109), 42820 states have internal predecessors, (52109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:43:47,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42821 states to 42821 states and 52109 transitions. [2023-12-22 01:43:47,906 INFO L78 Accepts]: Start accepts. Automaton has 42821 states and 52109 transitions. Word has length 163 [2023-12-22 01:43:47,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:43:47,907 INFO L495 AbstractCegarLoop]: Abstraction has 42821 states and 52109 transitions. [2023-12-22 01:43:47,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 12.115384615384615) internal successors, (315), 26 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:43:47,907 INFO L276 IsEmpty]: Start isEmpty. Operand 42821 states and 52109 transitions. [2023-12-22 01:43:47,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-22 01:43:47,911 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:43:47,911 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:43:47,915 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 [2023-12-22 01:43:48,114 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 [2023-12-22 01:43:48,114 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:43:48,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:43:48,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1814843458, now seen corresponding path program 1 times [2023-12-22 01:43:48,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:43:48,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1174279282] [2023-12-22 01:43:48,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:43:48,116 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 [2023-12-22 01:43:48,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:43:48,117 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) [2023-12-22 01:43:48,118 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 [2023-12-22 01:43:48,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:43:48,248 INFO L262 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-22 01:43:48,250 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:43:50,012 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 31 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:43:50,012 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:43:50,574 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 31 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:43:50,574 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:43:50,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1174279282] [2023-12-22 01:43:50,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1174279282] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:43:50,574 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:43:50,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-22 01:43:50,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906152589] [2023-12-22 01:43:50,575 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:43:50,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 01:43:50,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:43:50,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 01:43:50,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-22 01:43:50,584 INFO L87 Difference]: Start difference. First operand 42821 states and 52109 transitions. Second operand has 26 states, 26 states have (on average 11.923076923076923) internal successors, (310), 26 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:43:59,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:43:59,340 INFO L93 Difference]: Finished difference Result 67290 states and 81257 transitions. [2023-12-22 01:43:59,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-22 01:43:59,340 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 11.923076923076923) internal successors, (310), 26 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 163 [2023-12-22 01:43:59,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:43:59,412 INFO L225 Difference]: With dead ends: 67290 [2023-12-22 01:43:59,413 INFO L226 Difference]: Without dead ends: 60088 [2023-12-22 01:43:59,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 300 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1010 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=804, Invalid=4026, Unknown=0, NotChecked=0, Total=4830 [2023-12-22 01:43:59,427 INFO L413 NwaCegarLoop]: 1669 mSDtfsCounter, 2387 mSDsluCounter, 21182 mSDsCounter, 0 mSdLazyCounter, 2534 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2387 SdHoareTripleChecker+Valid, 22851 SdHoareTripleChecker+Invalid, 2549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-22 01:43:59,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2387 Valid, 22851 Invalid, 2549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 2534 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-22 01:43:59,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60088 states. [2023-12-22 01:44:02,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60088 to 51468. [2023-12-22 01:44:02,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51468 states, 51466 states have (on average 1.211187968756072) internal successors, (62335), 51467 states have internal predecessors, (62335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:44:02,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51468 states to 51468 states and 62335 transitions. [2023-12-22 01:44:02,549 INFO L78 Accepts]: Start accepts. Automaton has 51468 states and 62335 transitions. Word has length 163 [2023-12-22 01:44:02,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:44:02,549 INFO L495 AbstractCegarLoop]: Abstraction has 51468 states and 62335 transitions. [2023-12-22 01:44:02,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 11.923076923076923) internal successors, (310), 26 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:44:02,549 INFO L276 IsEmpty]: Start isEmpty. Operand 51468 states and 62335 transitions. [2023-12-22 01:44:02,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-22 01:44:02,554 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:44:02,554 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:44:02,561 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 [2023-12-22 01:44:02,758 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 [2023-12-22 01:44:02,758 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:44:02,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:44:02,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1316842654, now seen corresponding path program 1 times [2023-12-22 01:44:02,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:44:02,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [655140932] [2023-12-22 01:44:02,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:44:02,811 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 [2023-12-22 01:44:02,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:44:02,812 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) [2023-12-22 01:44:02,815 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 [2023-12-22 01:44:02,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:44:02,935 INFO L262 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-22 01:44:02,938 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:44:04,806 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 40 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:44:04,806 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:44:05,514 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 40 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:44:05,514 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:44:05,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [655140932] [2023-12-22 01:44:05,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [655140932] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:44:05,515 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:44:05,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-22 01:44:05,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488513034] [2023-12-22 01:44:05,515 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:44:05,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 01:44:05,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:44:05,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 01:44:05,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-22 01:44:05,516 INFO L87 Difference]: Start difference. First operand 51468 states and 62335 transitions. Second operand has 26 states, 26 states have (on average 11.73076923076923) internal successors, (305), 26 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:44:16,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:44:16,167 INFO L93 Difference]: Finished difference Result 83844 states and 100906 transitions. [2023-12-22 01:44:16,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-22 01:44:16,167 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 11.73076923076923) internal successors, (305), 26 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 163 [2023-12-22 01:44:16,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:44:16,251 INFO L225 Difference]: With dead ends: 83844 [2023-12-22 01:44:16,251 INFO L226 Difference]: Without dead ends: 74078 [2023-12-22 01:44:16,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 300 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1010 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=804, Invalid=4026, Unknown=0, NotChecked=0, Total=4830 [2023-12-22 01:44:16,265 INFO L413 NwaCegarLoop]: 1683 mSDtfsCounter, 2736 mSDsluCounter, 18108 mSDsCounter, 0 mSdLazyCounter, 2326 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2736 SdHoareTripleChecker+Valid, 19791 SdHoareTripleChecker+Invalid, 2345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 2326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-22 01:44:16,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2736 Valid, 19791 Invalid, 2345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 2326 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-22 01:44:16,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74078 states. [2023-12-22 01:44:19,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74078 to 61833. [2023-12-22 01:44:19,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61833 states, 61831 states have (on average 1.2059808186831849) internal successors, (74567), 61832 states have internal predecessors, (74567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:44:20,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61833 states to 61833 states and 74567 transitions. [2023-12-22 01:44:20,008 INFO L78 Accepts]: Start accepts. Automaton has 61833 states and 74567 transitions. Word has length 163 [2023-12-22 01:44:20,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:44:20,008 INFO L495 AbstractCegarLoop]: Abstraction has 61833 states and 74567 transitions. [2023-12-22 01:44:20,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 11.73076923076923) internal successors, (305), 26 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:44:20,008 INFO L276 IsEmpty]: Start isEmpty. Operand 61833 states and 74567 transitions. [2023-12-22 01:44:20,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-22 01:44:20,016 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:44:20,016 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:44:20,021 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 [2023-12-22 01:44:20,221 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 [2023-12-22 01:44:20,222 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:44:20,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:44:20,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1686394430, now seen corresponding path program 1 times [2023-12-22 01:44:20,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:44:20,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1349460558] [2023-12-22 01:44:20,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:44:20,223 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 [2023-12-22 01:44:20,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:44:20,225 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) [2023-12-22 01:44:20,228 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 [2023-12-22 01:44:20,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:44:20,346 INFO L262 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-22 01:44:20,349 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:44:21,815 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 49 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:44:21,815 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:44:22,459 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 49 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:44:22,459 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:44:22,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1349460558] [2023-12-22 01:44:22,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1349460558] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:44:22,459 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:44:22,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-22 01:44:22,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078487162] [2023-12-22 01:44:22,459 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:44:22,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 01:44:22,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:44:22,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 01:44:22,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-22 01:44:22,461 INFO L87 Difference]: Start difference. First operand 61833 states and 74567 transitions. Second operand has 26 states, 26 states have (on average 11.538461538461538) internal successors, (300), 26 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:44:32,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:44:32,950 INFO L93 Difference]: Finished difference Result 103781 states and 124269 transitions. [2023-12-22 01:44:32,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-12-22 01:44:32,954 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 11.538461538461538) internal successors, (300), 26 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 163 [2023-12-22 01:44:32,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:44:33,041 INFO L225 Difference]: With dead ends: 103781 [2023-12-22 01:44:33,041 INFO L226 Difference]: Without dead ends: 90529 [2023-12-22 01:44:33,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 300 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1055 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=881, Invalid=4089, Unknown=0, NotChecked=0, Total=4970 [2023-12-22 01:44:33,065 INFO L413 NwaCegarLoop]: 1684 mSDtfsCounter, 3783 mSDsluCounter, 22969 mSDsCounter, 0 mSdLazyCounter, 2766 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3783 SdHoareTripleChecker+Valid, 24653 SdHoareTripleChecker+Invalid, 2784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 2766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-22 01:44:33,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3783 Valid, 24653 Invalid, 2784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 2766 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-22 01:44:33,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90529 states. [2023-12-22 01:44:37,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90529 to 72971. [2023-12-22 01:44:37,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72971 states, 72969 states have (on average 1.201085392426921) internal successors, (87642), 72970 states have internal predecessors, (87642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:44:37,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72971 states to 72971 states and 87642 transitions. [2023-12-22 01:44:37,394 INFO L78 Accepts]: Start accepts. Automaton has 72971 states and 87642 transitions. Word has length 163 [2023-12-22 01:44:37,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:44:37,394 INFO L495 AbstractCegarLoop]: Abstraction has 72971 states and 87642 transitions. [2023-12-22 01:44:37,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 11.538461538461538) internal successors, (300), 26 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:44:37,394 INFO L276 IsEmpty]: Start isEmpty. Operand 72971 states and 87642 transitions. [2023-12-22 01:44:37,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-22 01:44:37,402 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:44:37,402 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:44:37,427 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 [2023-12-22 01:44:37,606 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 [2023-12-22 01:44:37,607 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:44:37,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:44:37,607 INFO L85 PathProgramCache]: Analyzing trace with hash -306840350, now seen corresponding path program 1 times [2023-12-22 01:44:37,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:44:37,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [903621111] [2023-12-22 01:44:37,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:44:37,608 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 [2023-12-22 01:44:37,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:44:37,609 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) [2023-12-22 01:44:37,610 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 [2023-12-22 01:44:37,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:44:37,745 INFO L262 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-22 01:44:37,747 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:44:39,265 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 58 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:44:39,265 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 01:44:39,773 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 58 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 01:44:39,773 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:44:39,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [903621111] [2023-12-22 01:44:39,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [903621111] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 01:44:39,774 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 01:44:39,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-22 01:44:39,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099997434] [2023-12-22 01:44:39,774 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 01:44:39,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-22 01:44:39,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:44:39,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-22 01:44:39,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-22 01:44:39,775 INFO L87 Difference]: Start difference. First operand 72971 states and 87642 transitions. Second operand has 26 states, 26 states have (on average 11.346153846153847) internal successors, (295), 26 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:44:56,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:44:56,100 INFO L93 Difference]: Finished difference Result 193061 states and 227518 transitions. [2023-12-22 01:44:56,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-12-22 01:44:56,101 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 11.346153846153847) internal successors, (295), 26 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 163 [2023-12-22 01:44:56,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:44:56,282 INFO L225 Difference]: With dead ends: 193061 [2023-12-22 01:44:56,282 INFO L226 Difference]: Without dead ends: 174679 [2023-12-22 01:44:56,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 300 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1355 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1011, Invalid=4995, Unknown=0, NotChecked=0, Total=6006 [2023-12-22 01:44:56,310 INFO L413 NwaCegarLoop]: 1701 mSDtfsCounter, 3804 mSDsluCounter, 21554 mSDsCounter, 0 mSdLazyCounter, 2998 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3804 SdHoareTripleChecker+Valid, 23255 SdHoareTripleChecker+Invalid, 3017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 2998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-22 01:44:56,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3804 Valid, 23255 Invalid, 3017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 2998 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-22 01:44:56,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174679 states. [2023-12-22 01:45:04,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174679 to 132159. [2023-12-22 01:45:04,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132159 states, 132157 states have (on average 1.1873604879045379) internal successors, (156918), 132158 states have internal predecessors, (156918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:45:04,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132159 states to 132159 states and 156918 transitions. [2023-12-22 01:45:04,954 INFO L78 Accepts]: Start accepts. Automaton has 132159 states and 156918 transitions. Word has length 163 [2023-12-22 01:45:04,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:45:04,954 INFO L495 AbstractCegarLoop]: Abstraction has 132159 states and 156918 transitions. [2023-12-22 01:45:04,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 11.346153846153847) internal successors, (295), 26 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:45:04,954 INFO L276 IsEmpty]: Start isEmpty. Operand 132159 states and 156918 transitions. [2023-12-22 01:45:04,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2023-12-22 01:45:04,999 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:45:04,999 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:45:05,012 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2023-12-22 01:45:05,203 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 [2023-12-22 01:45:05,203 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:45:05,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:45:05,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1242389709, now seen corresponding path program 2 times [2023-12-22 01:45:05,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:45:05,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1809963271] [2023-12-22 01:45:05,204 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-22 01:45:05,204 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 [2023-12-22 01:45:05,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:45:05,205 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) [2023-12-22 01:45:05,207 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 [2023-12-22 01:45:05,282 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-22 01:45:05,282 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-22 01:45:05,285 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-22 01:45:05,287 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:45:08,063 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2023-12-22 01:45:08,063 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:45:08,064 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:45:08,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1809963271] [2023-12-22 01:45:08,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1809963271] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:45:08,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:45:08,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-22 01:45:08,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046590826] [2023-12-22 01:45:08,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:45:08,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-22 01:45:08,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:45:08,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-22 01:45:08,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-12-22 01:45:08,065 INFO L87 Difference]: Start difference. First operand 132159 states and 156918 transitions. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:45:17,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:45:17,298 INFO L93 Difference]: Finished difference Result 186900 states and 223908 transitions. [2023-12-22 01:45:17,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-22 01:45:17,300 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 223 [2023-12-22 01:45:17,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:45:17,606 INFO L225 Difference]: With dead ends: 186900 [2023-12-22 01:45:17,606 INFO L226 Difference]: Without dead ends: 159143 [2023-12-22 01:45:17,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-12-22 01:45:17,625 INFO L413 NwaCegarLoop]: 1613 mSDtfsCounter, 4939 mSDsluCounter, 1886 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4939 SdHoareTripleChecker+Valid, 3499 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-22 01:45:17,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4939 Valid, 3499 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-22 01:45:17,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159143 states. [2023-12-22 01:45:26,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159143 to 131803. [2023-12-22 01:45:26,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131803 states, 131801 states have (on average 1.1811139520944454) internal successors, (155672), 131802 states have internal predecessors, (155672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:45:27,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131803 states to 131803 states and 155672 transitions. [2023-12-22 01:45:27,034 INFO L78 Accepts]: Start accepts. Automaton has 131803 states and 155672 transitions. Word has length 223 [2023-12-22 01:45:27,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:45:27,035 INFO L495 AbstractCegarLoop]: Abstraction has 131803 states and 155672 transitions. [2023-12-22 01:45:27,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:45:27,035 INFO L276 IsEmpty]: Start isEmpty. Operand 131803 states and 155672 transitions. [2023-12-22 01:45:27,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2023-12-22 01:45:27,079 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:45:27,080 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:45:27,083 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 [2023-12-22 01:45:27,283 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 [2023-12-22 01:45:27,283 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:45:27,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:45:27,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1597095281, now seen corresponding path program 2 times [2023-12-22 01:45:27,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:45:27,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1791133261] [2023-12-22 01:45:27,284 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-22 01:45:27,284 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 [2023-12-22 01:45:27,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:45:27,285 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) [2023-12-22 01:45:27,287 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 [2023-12-22 01:45:27,355 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-22 01:45:27,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-22 01:45:27,358 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-22 01:45:27,361 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:45:29,837 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2023-12-22 01:45:29,837 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:45:29,837 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:45:29,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1791133261] [2023-12-22 01:45:29,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1791133261] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:45:29,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:45:29,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-22 01:45:29,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096455274] [2023-12-22 01:45:29,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:45:29,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-22 01:45:29,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:45:29,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-22 01:45:29,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-12-22 01:45:29,839 INFO L87 Difference]: Start difference. First operand 131803 states and 155672 transitions. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:45:39,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:45:39,111 INFO L93 Difference]: Finished difference Result 172675 states and 206174 transitions. [2023-12-22 01:45:39,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-22 01:45:39,113 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 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 223 [2023-12-22 01:45:39,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:45:39,302 INFO L225 Difference]: With dead ends: 172675 [2023-12-22 01:45:39,303 INFO L226 Difference]: Without dead ends: 162511 [2023-12-22 01:45:39,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-12-22 01:45:39,323 INFO L413 NwaCegarLoop]: 1618 mSDtfsCounter, 4768 mSDsluCounter, 1896 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4768 SdHoareTripleChecker+Valid, 3514 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-22 01:45:39,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4768 Valid, 3514 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-22 01:45:39,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162511 states. [2023-12-22 01:45:49,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162511 to 140197. [2023-12-22 01:45:49,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140197 states, 140195 states have (on average 1.1791076714576125) internal successors, (165305), 140196 states have internal predecessors, (165305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:45:49,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140197 states to 140197 states and 165305 transitions. [2023-12-22 01:45:49,828 INFO L78 Accepts]: Start accepts. Automaton has 140197 states and 165305 transitions. Word has length 223 [2023-12-22 01:45:49,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:45:49,828 INFO L495 AbstractCegarLoop]: Abstraction has 140197 states and 165305 transitions. [2023-12-22 01:45:49,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:45:49,828 INFO L276 IsEmpty]: Start isEmpty. Operand 140197 states and 165305 transitions. [2023-12-22 01:45:49,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2023-12-22 01:45:49,880 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:45:49,880 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:45:49,885 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2023-12-22 01:45:50,083 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 [2023-12-22 01:45:50,084 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:45:50,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:45:50,084 INFO L85 PathProgramCache]: Analyzing trace with hash -911989939, now seen corresponding path program 2 times [2023-12-22 01:45:50,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:45:50,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [791890555] [2023-12-22 01:45:50,085 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-22 01:45:50,085 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 [2023-12-22 01:45:50,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:45:50,086 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) [2023-12-22 01:45:50,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2023-12-22 01:45:50,163 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-22 01:45:50,163 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-22 01:45:50,165 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-22 01:45:50,168 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:45:53,090 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2023-12-22 01:45:53,090 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:45:53,090 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:45:53,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [791890555] [2023-12-22 01:45:53,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [791890555] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:45:53,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:45:53,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-22 01:45:53,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806672900] [2023-12-22 01:45:53,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:45:53,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-22 01:45:53,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:45:53,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-22 01:45:53,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-12-22 01:45:53,091 INFO L87 Difference]: Start difference. First operand 140197 states and 165305 transitions. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:46:02,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:46:02,413 INFO L93 Difference]: Finished difference Result 177776 states and 211745 transitions. [2023-12-22 01:46:02,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-22 01:46:02,414 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 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 223 [2023-12-22 01:46:02,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:46:02,611 INFO L225 Difference]: With dead ends: 177776 [2023-12-22 01:46:02,611 INFO L226 Difference]: Without dead ends: 167606 [2023-12-22 01:46:02,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-12-22 01:46:02,631 INFO L413 NwaCegarLoop]: 1623 mSDtfsCounter, 1893 mSDsluCounter, 2061 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1893 SdHoareTripleChecker+Valid, 3684 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-22 01:46:02,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1893 Valid, 3684 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-22 01:46:02,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167606 states. [2023-12-22 01:46:13,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167606 to 149131. [2023-12-22 01:46:13,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149131 states, 149129 states have (on average 1.1774235728798557) internal successors, (175588), 149130 states have internal predecessors, (175588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:46:13,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149131 states to 149131 states and 175588 transitions. [2023-12-22 01:46:13,532 INFO L78 Accepts]: Start accepts. Automaton has 149131 states and 175588 transitions. Word has length 223 [2023-12-22 01:46:13,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:46:13,533 INFO L495 AbstractCegarLoop]: Abstraction has 149131 states and 175588 transitions. [2023-12-22 01:46:13,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:46:13,533 INFO L276 IsEmpty]: Start isEmpty. Operand 149131 states and 175588 transitions. [2023-12-22 01:46:13,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2023-12-22 01:46:13,587 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:46:13,588 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:46:13,594 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 [2023-12-22 01:46:13,791 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 [2023-12-22 01:46:13,792 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:46:13,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:46:13,792 INFO L85 PathProgramCache]: Analyzing trace with hash -413989135, now seen corresponding path program 2 times [2023-12-22 01:46:13,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:46:13,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1776254626] [2023-12-22 01:46:13,793 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-22 01:46:13,793 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:46:13,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:46:13,794 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) [2023-12-22 01:46:13,796 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 [2023-12-22 01:46:14,083 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-22 01:46:14,083 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-22 01:46:14,085 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-22 01:46:14,088 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:46:16,631 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2023-12-22 01:46:16,631 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:46:16,632 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:46:16,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1776254626] [2023-12-22 01:46:16,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1776254626] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:46:16,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:46:16,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-22 01:46:16,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261938177] [2023-12-22 01:46:16,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:46:16,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-22 01:46:16,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:46:16,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-22 01:46:16,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-12-22 01:46:16,633 INFO L87 Difference]: Start difference. First operand 149131 states and 175588 transitions. Second operand has 8 states, 8 states have (on average 14.25) internal successors, (114), 8 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) [2023-12-22 01:46:26,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:46:26,712 INFO L93 Difference]: Finished difference Result 184522 states and 219337 transitions. [2023-12-22 01:46:26,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-22 01:46:26,714 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 8 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 223 [2023-12-22 01:46:26,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:46:26,916 INFO L225 Difference]: With dead ends: 184522 [2023-12-22 01:46:26,917 INFO L226 Difference]: Without dead ends: 174283 [2023-12-22 01:46:26,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-12-22 01:46:26,938 INFO L413 NwaCegarLoop]: 1623 mSDtfsCounter, 3266 mSDsluCounter, 1983 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3266 SdHoareTripleChecker+Valid, 3606 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-22 01:46:26,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3266 Valid, 3606 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-22 01:46:27,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174283 states. [2023-12-22 01:46:38,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174283 to 158597. [2023-12-22 01:46:38,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158597 states, 158595 states have (on average 1.1760206816103913) internal successors, (186511), 158596 states have internal predecessors, (186511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:46:38,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158597 states to 158597 states and 186511 transitions. [2023-12-22 01:46:38,606 INFO L78 Accepts]: Start accepts. Automaton has 158597 states and 186511 transitions. Word has length 223 [2023-12-22 01:46:38,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:46:38,607 INFO L495 AbstractCegarLoop]: Abstraction has 158597 states and 186511 transitions. [2023-12-22 01:46:38,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 8 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) [2023-12-22 01:46:38,607 INFO L276 IsEmpty]: Start isEmpty. Operand 158597 states and 186511 transitions. [2023-12-22 01:46:38,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2023-12-22 01:46:38,657 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:46:38,657 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:46:38,660 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Ended with exit code 0 [2023-12-22 01:46:38,863 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 [2023-12-22 01:46:38,863 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:46:38,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:46:38,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1705719347, now seen corresponding path program 2 times [2023-12-22 01:46:38,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:46:38,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [601979333] [2023-12-22 01:46:38,864 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-22 01:46:38,864 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 01:46:38,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:46:38,865 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) [2023-12-22 01:46:38,866 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 [2023-12-22 01:46:38,948 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-22 01:46:38,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-22 01:46:38,950 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-22 01:46:38,952 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:46:41,568 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2023-12-22 01:46:41,568 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:46:41,568 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:46:41,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [601979333] [2023-12-22 01:46:41,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [601979333] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:46:41,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:46:41,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-22 01:46:41,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102081688] [2023-12-22 01:46:41,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:46:41,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-22 01:46:41,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:46:41,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-22 01:46:41,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-12-22 01:46:41,569 INFO L87 Difference]: Start difference. First operand 158597 states and 186511 transitions. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:46:52,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:46:52,110 INFO L93 Difference]: Finished difference Result 192836 states and 228849 transitions. [2023-12-22 01:46:52,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-22 01:46:52,111 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 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 223 [2023-12-22 01:46:52,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:46:52,322 INFO L225 Difference]: With dead ends: 192836 [2023-12-22 01:46:52,322 INFO L226 Difference]: Without dead ends: 182480 [2023-12-22 01:46:52,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-12-22 01:46:52,344 INFO L413 NwaCegarLoop]: 1626 mSDtfsCounter, 3367 mSDsluCounter, 1981 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3367 SdHoareTripleChecker+Valid, 3607 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-22 01:46:52,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3367 Valid, 3607 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-22 01:46:52,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182480 states. [2023-12-22 01:47:04,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182480 to 168514. [2023-12-22 01:47:04,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168514 states, 168512 states have (on average 1.1748599506266617) internal successors, (197978), 168513 states have internal predecessors, (197978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:47:05,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168514 states to 168514 states and 197978 transitions. [2023-12-22 01:47:05,121 INFO L78 Accepts]: Start accepts. Automaton has 168514 states and 197978 transitions. Word has length 223 [2023-12-22 01:47:05,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:47:05,121 INFO L495 AbstractCegarLoop]: Abstraction has 168514 states and 197978 transitions. [2023-12-22 01:47:05,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:47:05,122 INFO L276 IsEmpty]: Start isEmpty. Operand 168514 states and 197978 transitions. [2023-12-22 01:47:05,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2023-12-22 01:47:05,181 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:47:05,181 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:47:05,184 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 [2023-12-22 01:47:05,384 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 [2023-12-22 01:47:05,384 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:47:05,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:47:05,385 INFO L85 PathProgramCache]: Analyzing trace with hash 596013169, now seen corresponding path program 2 times [2023-12-22 01:47:05,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:47:05,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [683900522] [2023-12-22 01:47:05,389 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-22 01:47:05,389 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 [2023-12-22 01:47:05,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:47:05,390 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) [2023-12-22 01:47:05,392 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 [2023-12-22 01:47:05,489 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-22 01:47:05,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-22 01:47:05,491 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-22 01:47:05,493 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 01:47:08,450 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2023-12-22 01:47:08,451 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 01:47:08,451 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 01:47:08,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [683900522] [2023-12-22 01:47:08,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [683900522] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 01:47:08,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 01:47:08,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-22 01:47:08,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960845860] [2023-12-22 01:47:08,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 01:47:08,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-22 01:47:08,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 01:47:08,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-22 01:47:08,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-12-22 01:47:08,452 INFO L87 Difference]: Start difference. First operand 168514 states and 197978 transitions. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:47:19,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 01:47:19,919 INFO L93 Difference]: Finished difference Result 202920 states and 240508 transitions. [2023-12-22 01:47:19,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-22 01:47:19,920 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 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 223 [2023-12-22 01:47:19,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 01:47:20,160 INFO L225 Difference]: With dead ends: 202920 [2023-12-22 01:47:20,160 INFO L226 Difference]: Without dead ends: 192360 [2023-12-22 01:47:20,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-12-22 01:47:20,188 INFO L413 NwaCegarLoop]: 1618 mSDtfsCounter, 1863 mSDsluCounter, 1957 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1863 SdHoareTripleChecker+Valid, 3575 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-22 01:47:20,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1863 Valid, 3575 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-22 01:47:20,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192360 states. [2023-12-22 01:47:33,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192360 to 178394. [2023-12-22 01:47:33,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178394 states, 178392 states have (on average 1.1738138481546259) internal successors, (209399), 178393 states have internal predecessors, (209399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:47:34,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178394 states to 178394 states and 209399 transitions. [2023-12-22 01:47:34,233 INFO L78 Accepts]: Start accepts. Automaton has 178394 states and 209399 transitions. Word has length 223 [2023-12-22 01:47:34,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 01:47:34,233 INFO L495 AbstractCegarLoop]: Abstraction has 178394 states and 209399 transitions. [2023-12-22 01:47:34,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 01:47:34,234 INFO L276 IsEmpty]: Start isEmpty. Operand 178394 states and 209399 transitions. [2023-12-22 01:47:34,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2023-12-22 01:47:34,297 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 01:47:34,297 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 01:47:34,301 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 [2023-12-22 01:47:34,500 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 [2023-12-22 01:47:34,501 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 01:47:34,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 01:47:34,501 INFO L85 PathProgramCache]: Analyzing trace with hash -745979970, now seen corresponding path program 1 times [2023-12-22 01:47:34,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 01:47:34,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [303505464] [2023-12-22 01:47:34,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 01:47:34,502 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 [2023-12-22 01:47:34,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 01:47:34,503 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) [2023-12-22 01:47:34,505 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 [2023-12-22 01:47:34,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 01:47:34,681 INFO L262 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-22 01:47:34,684 INFO L285 TraceCheckSpWp]: Computing forward predicates...