/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/eca-rers2012/Problem18_label25.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-22 16:22:25,519 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-22 16:22:25,587 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 16:22:25,591 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-22 16:22:25,592 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-22 16:22:25,613 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-22 16:22:25,614 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-22 16:22:25,614 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-22 16:22:25,614 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-22 16:22:25,617 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-22 16:22:25,617 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-22 16:22:25,618 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-22 16:22:25,618 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-22 16:22:25,619 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-22 16:22:25,620 INFO L153 SettingsManager]: * Use SBE=true [2023-12-22 16:22:25,620 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-22 16:22:25,620 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-22 16:22:25,620 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-22 16:22:25,620 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-22 16:22:25,621 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-22 16:22:25,621 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-22 16:22:25,621 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-22 16:22:25,621 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-22 16:22:25,621 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-22 16:22:25,622 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-22 16:22:25,622 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-22 16:22:25,622 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-22 16:22:25,622 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-22 16:22:25,622 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-22 16:22:25,622 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-22 16:22:25,623 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-22 16:22:25,623 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-22 16:22:25,623 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-22 16:22:25,623 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-22 16:22:25,623 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 16:22:25,623 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-22 16:22:25,624 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-22 16:22:25,624 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-22 16:22:25,624 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-22 16:22:25,624 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-22 16:22:25,624 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-22 16:22:25,624 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-22 16:22:25,624 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-22 16:22:25,624 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-22 16:22:25,625 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-22 16:22:25,625 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-22 16:22:25,625 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-22 16:22:25,820 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-22 16:22:25,840 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-22 16:22:25,842 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-22 16:22:25,842 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-22 16:22:25,843 INFO L274 PluginConnector]: CDTParser initialized [2023-12-22 16:22:25,844 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label25.c [2023-12-22 16:22:26,885 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-22 16:22:27,188 INFO L384 CDTParser]: Found 1 translation units. [2023-12-22 16:22:27,188 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label25.c [2023-12-22 16:22:27,210 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7eb02f63/04a419cf27c94c50933fa1f4c24b2b71/FLAG7a0ebc950 [2023-12-22 16:22:27,222 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7eb02f63/04a419cf27c94c50933fa1f4c24b2b71 [2023-12-22 16:22:27,224 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-22 16:22:27,225 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-22 16:22:27,227 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-22 16:22:27,227 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-22 16:22:27,230 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-22 16:22:27,232 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:22:27" (1/1) ... [2023-12-22 16:22:27,232 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f522393 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:22:27, skipping insertion in model container [2023-12-22 16:22:27,232 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:22:27" (1/1) ... [2023-12-22 16:22:27,301 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-22 16:22:27,469 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label25.c[2806,2819] [2023-12-22 16:22:27,969 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 16:22:27,978 INFO L202 MainTranslator]: Completed pre-run [2023-12-22 16:22:27,994 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label25.c[2806,2819] [2023-12-22 16:22:28,187 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 16:22:28,202 INFO L206 MainTranslator]: Completed translation [2023-12-22 16:22:28,202 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:22:28 WrapperNode [2023-12-22 16:22:28,202 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-22 16:22:28,203 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-22 16:22:28,203 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-22 16:22:28,203 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-22 16:22:28,208 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:22:28" (1/1) ... [2023-12-22 16:22:28,249 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:22:28" (1/1) ... [2023-12-22 16:22:28,421 INFO L138 Inliner]: procedures = 16, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 4131 [2023-12-22 16:22:28,421 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-22 16:22:28,422 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-22 16:22:28,422 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-22 16:22:28,422 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-22 16:22:28,429 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:22:28" (1/1) ... [2023-12-22 16:22:28,429 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:22:28" (1/1) ... [2023-12-22 16:22:28,447 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:22:28" (1/1) ... [2023-12-22 16:22:28,494 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 16:22:28,494 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:22:28" (1/1) ... [2023-12-22 16:22:28,495 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:22:28" (1/1) ... [2023-12-22 16:22:28,543 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:22:28" (1/1) ... [2023-12-22 16:22:28,564 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:22:28" (1/1) ... [2023-12-22 16:22:28,582 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:22:28" (1/1) ... [2023-12-22 16:22:28,591 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:22:28" (1/1) ... [2023-12-22 16:22:28,647 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-22 16:22:28,649 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-22 16:22:28,649 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-22 16:22:28,649 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-22 16:22:28,650 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:22:28" (1/1) ... [2023-12-22 16:22:28,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 16:22:28,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-22 16:22:28,683 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 16:22:28,703 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 16:22:28,707 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-22 16:22:28,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-22 16:22:28,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-22 16:22:28,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-22 16:22:28,762 INFO L241 CfgBuilder]: Building ICFG [2023-12-22 16:22:28,764 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-22 16:22:41,002 INFO L282 CfgBuilder]: Performing block encoding [2023-12-22 16:22:41,065 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-22 16:22:41,065 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-22 16:22:41,065 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:22:41 BoogieIcfgContainer [2023-12-22 16:22:41,065 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-22 16:22:41,067 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-22 16:22:41,067 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-22 16:22:41,086 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-22 16:22:41,086 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 04:22:27" (1/3) ... [2023-12-22 16:22:41,087 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fd449c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:22:41, skipping insertion in model container [2023-12-22 16:22:41,087 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:22:28" (2/3) ... [2023-12-22 16:22:41,087 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fd449c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:22:41, skipping insertion in model container [2023-12-22 16:22:41,087 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:22:41" (3/3) ... [2023-12-22 16:22:41,088 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label25.c [2023-12-22 16:22:41,100 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-22 16:22:41,101 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-22 16:22:41,156 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-22 16:22:41,160 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;@2b837a51, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-22 16:22:41,161 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-22 16:22:41,167 INFO L276 IsEmpty]: Start isEmpty. Operand has 695 states, 693 states have (on average 1.9942279942279941) internal successors, (1382), 694 states have internal predecessors, (1382), 0 states have call successors, (0), 0 states 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 16:22:41,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-22 16:22:41,171 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 16:22:41,172 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 16:22:41,173 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 16:22:41,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 16:22:41,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1781062481, now seen corresponding path program 1 times [2023-12-22 16:22:41,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 16:22:41,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [808369635] [2023-12-22 16:22:41,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 16:22:41,192 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 16:22:41,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 16:22:41,206 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 16:22:41,213 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 16:22:41,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 16:22:41,259 INFO L262 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-22 16:22:41,261 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 16:22:41,274 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 16:22:41,274 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 16:22:41,274 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 16:22:41,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [808369635] [2023-12-22 16:22:41,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [808369635] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 16:22:41,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 16:22:41,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 16:22:41,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877959592] [2023-12-22 16:22:41,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 16:22:41,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-22 16:22:41,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 16:22:41,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-22 16:22:41,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-22 16:22:41,298 INFO L87 Difference]: Start difference. First operand has 695 states, 693 states have (on average 1.9942279942279941) internal successors, (1382), 694 states have internal predecessors, (1382), 0 states have call successors, (0), 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 16:22:41,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 16:22:41,370 INFO L93 Difference]: Finished difference Result 1389 states and 2763 transitions. [2023-12-22 16:22:41,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-22 16:22:41,373 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 16:22:41,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 16:22:41,383 INFO L225 Difference]: With dead ends: 1389 [2023-12-22 16:22:41,384 INFO L226 Difference]: Without dead ends: 693 [2023-12-22 16:22:41,388 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 16:22:41,390 INFO L413 NwaCegarLoop]: 1317 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1317 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 16:22:41,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1317 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 16:22:41,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2023-12-22 16:22:41,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 693. [2023-12-22 16:22:41,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 692 states have (on average 1.903179190751445) internal successors, (1317), 692 states have internal predecessors, (1317), 0 states have call successors, (0), 0 states 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 16:22:41,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1317 transitions. [2023-12-22 16:22:41,458 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1317 transitions. Word has length 23 [2023-12-22 16:22:41,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 16:22:41,459 INFO L495 AbstractCegarLoop]: Abstraction has 693 states and 1317 transitions. [2023-12-22 16:22:41,459 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 16:22:41,459 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1317 transitions. [2023-12-22 16:22:41,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-22 16:22:41,459 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 16:22:41,459 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 16:22:41,464 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-22 16:22:41,662 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 16:22:41,662 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 16:22:41,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 16:22:41,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1197402803, now seen corresponding path program 1 times [2023-12-22 16:22:41,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 16:22:41,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1277406675] [2023-12-22 16:22:41,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 16:22:41,664 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 16:22:41,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 16:22:41,666 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 16:22:41,667 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 16:22:41,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 16:22:41,690 INFO L262 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 16:22:41,691 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 16:22:41,730 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 16:22:41,731 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 16:22:41,731 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 16:22:41,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1277406675] [2023-12-22 16:22:41,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1277406675] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 16:22:41,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 16:22:41,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 16:22:41,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359805392] [2023-12-22 16:22:41,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 16:22:41,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 16:22:41,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 16:22:41,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 16:22:41,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 16:22:41,733 INFO L87 Difference]: Start difference. First operand 693 states and 1317 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) 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 16:22:57,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 16:22:57,748 INFO L93 Difference]: Finished difference Result 2075 states and 3948 transitions. [2023-12-22 16:22:57,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 16:22:57,749 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) 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 16:22:57,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 16:22:57,754 INFO L225 Difference]: With dead ends: 2075 [2023-12-22 16:22:57,754 INFO L226 Difference]: Without dead ends: 1383 [2023-12-22 16:22:57,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 21 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 16:22:57,757 INFO L413 NwaCegarLoop]: 429 mSDtfsCounter, 752 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2200 mSolverCounterSat, 420 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 752 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 2620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 420 IncrementalHoareTripleChecker+Valid, 2200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.9s IncrementalHoareTripleChecker+Time [2023-12-22 16:22:57,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [752 Valid, 435 Invalid, 2620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [420 Valid, 2200 Invalid, 0 Unknown, 0 Unchecked, 15.9s Time] [2023-12-22 16:22:57,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1383 states. [2023-12-22 16:22:57,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1383 to 1383. [2023-12-22 16:22:57,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1383 states, 1382 states have (on average 1.5998552821997105) internal successors, (2211), 1382 states have internal predecessors, (2211), 0 states have call successors, (0), 0 states 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 16:22:57,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1383 states to 1383 states and 2211 transitions. [2023-12-22 16:22:57,785 INFO L78 Accepts]: Start accepts. Automaton has 1383 states and 2211 transitions. Word has length 23 [2023-12-22 16:22:57,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 16:22:57,785 INFO L495 AbstractCegarLoop]: Abstraction has 1383 states and 2211 transitions. [2023-12-22 16:22:57,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) 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 16:22:57,786 INFO L276 IsEmpty]: Start isEmpty. Operand 1383 states and 2211 transitions. [2023-12-22 16:22:57,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-22 16:22:57,787 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 16:22:57,787 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:22:57,793 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 16:22:57,989 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 16:22:57,990 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 16:22:57,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 16:22:57,990 INFO L85 PathProgramCache]: Analyzing trace with hash 865679015, now seen corresponding path program 1 times [2023-12-22 16:22:57,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 16:22:57,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [272542673] [2023-12-22 16:22:57,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 16:22:57,991 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 16:22:57,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 16:22:57,992 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 16:22:57,995 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 16:22:58,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 16:22:58,046 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 16:22:58,048 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 16:22:58,151 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 16:22:58,151 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 16:22:58,151 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 16:22:58,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [272542673] [2023-12-22 16:22:58,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [272542673] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 16:22:58,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 16:22:58,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 16:22:58,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370383786] [2023-12-22 16:22:58,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 16:22:58,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 16:22:58,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 16:22:58,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 16:22:58,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 16:22:58,153 INFO L87 Difference]: Start difference. First operand 1383 states and 2211 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 16:23:15,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 16:23:15,282 INFO L93 Difference]: Finished difference Result 3455 states and 5736 transitions. [2023-12-22 16:23:15,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 16:23:15,282 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 16:23:15,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 16:23:15,288 INFO L225 Difference]: With dead ends: 3455 [2023-12-22 16:23:15,288 INFO L226 Difference]: Without dead ends: 2073 [2023-12-22 16:23:15,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 86 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 16:23:15,290 INFO L413 NwaCegarLoop]: 522 mSDtfsCounter, 714 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1702 mSolverCounterSat, 918 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 714 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 2620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 918 IncrementalHoareTripleChecker+Valid, 1702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.0s IncrementalHoareTripleChecker+Time [2023-12-22 16:23:15,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [714 Valid, 527 Invalid, 2620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [918 Valid, 1702 Invalid, 0 Unknown, 0 Unchecked, 17.0s Time] [2023-12-22 16:23:15,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2073 states. [2023-12-22 16:23:15,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2073 to 2073. [2023-12-22 16:23:15,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2073 states, 2072 states have (on average 1.3687258687258688) internal successors, (2836), 2072 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states 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 16:23:15,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2073 states to 2073 states and 2836 transitions. [2023-12-22 16:23:15,317 INFO L78 Accepts]: Start accepts. Automaton has 2073 states and 2836 transitions. Word has length 88 [2023-12-22 16:23:15,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 16:23:15,317 INFO L495 AbstractCegarLoop]: Abstraction has 2073 states and 2836 transitions. [2023-12-22 16:23:15,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 16:23:15,317 INFO L276 IsEmpty]: Start isEmpty. Operand 2073 states and 2836 transitions. [2023-12-22 16:23:15,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-22 16:23:15,319 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 16:23:15,319 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:23:15,323 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-22 16:23:15,523 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 16:23:15,523 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 16:23:15,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 16:23:15,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1341097441, now seen corresponding path program 1 times [2023-12-22 16:23:15,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 16:23:15,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1684619584] [2023-12-22 16:23:15,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 16:23:15,525 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 16:23:15,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 16:23:15,526 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 16:23:15,530 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 16:23:15,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 16:23:15,617 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 16:23:15,619 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 16:23:16,005 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 16:23:16,006 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 16:23:16,008 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 16:23:16,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1684619584] [2023-12-22 16:23:16,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1684619584] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 16:23:16,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 16:23:16,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 16:23:16,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245684424] [2023-12-22 16:23:16,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 16:23:16,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 16:23:16,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 16:23:16,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 16:23:16,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 16:23:16,012 INFO L87 Difference]: Start difference. First operand 2073 states and 2836 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 16:23:35,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 16:23:35,346 INFO L93 Difference]: Finished difference Result 6215 states and 8505 transitions. [2023-12-22 16:23:35,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 16:23:35,347 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2023-12-22 16:23:35,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 16:23:35,358 INFO L225 Difference]: With dead ends: 6215 [2023-12-22 16:23:35,358 INFO L226 Difference]: Without dead ends: 4143 [2023-12-22 16:23:35,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 114 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 16:23:35,367 INFO L413 NwaCegarLoop]: 628 mSDtfsCounter, 599 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2126 mSolverCounterSat, 559 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 599 SdHoareTripleChecker+Valid, 634 SdHoareTripleChecker+Invalid, 2685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 559 IncrementalHoareTripleChecker+Valid, 2126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.2s IncrementalHoareTripleChecker+Time [2023-12-22 16:23:35,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [599 Valid, 634 Invalid, 2685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [559 Valid, 2126 Invalid, 0 Unknown, 0 Unchecked, 19.2s Time] [2023-12-22 16:23:35,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4143 states. [2023-12-22 16:23:35,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4143 to 4143. [2023-12-22 16:23:35,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4143 states, 4142 states have (on average 1.209077740222115) internal successors, (5008), 4142 states have internal predecessors, (5008), 0 states have call successors, (0), 0 states 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 16:23:35,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4143 states to 4143 states and 5008 transitions. [2023-12-22 16:23:35,418 INFO L78 Accepts]: Start accepts. Automaton has 4143 states and 5008 transitions. Word has length 116 [2023-12-22 16:23:35,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 16:23:35,419 INFO L495 AbstractCegarLoop]: Abstraction has 4143 states and 5008 transitions. [2023-12-22 16:23:35,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 16:23:35,419 INFO L276 IsEmpty]: Start isEmpty. Operand 4143 states and 5008 transitions. [2023-12-22 16:23:35,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2023-12-22 16:23:35,428 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 16:23:35,428 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:23:35,434 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 16:23:35,632 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 16:23:35,632 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 16:23:35,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 16:23:35,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1458788646, now seen corresponding path program 1 times [2023-12-22 16:23:35,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 16:23:35,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [455889961] [2023-12-22 16:23:35,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 16:23:35,635 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 16:23:35,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 16:23:35,636 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 16:23:35,640 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 16:23:35,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 16:23:35,750 INFO L262 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-22 16:23:35,755 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 16:23:36,786 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 16:23:36,787 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 16:23:36,787 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 16:23:36,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [455889961] [2023-12-22 16:23:36,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [455889961] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 16:23:36,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 16:23:36,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 16:23:36,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850703618] [2023-12-22 16:23:36,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 16:23:36,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 16:23:36,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 16:23:36,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 16:23:36,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 16:23:36,791 INFO L87 Difference]: Start difference. First operand 4143 states and 5008 transitions. Second operand has 4 states, 4 states have (on average 74.5) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 0 states 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 16:23:51,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 16:23:51,130 INFO L93 Difference]: Finished difference Result 7648 states and 9372 transitions. [2023-12-22 16:23:51,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 16:23:51,133 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 74.5) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 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 298 [2023-12-22 16:23:51,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 16:23:51,143 INFO L225 Difference]: With dead ends: 7648 [2023-12-22 16:23:51,143 INFO L226 Difference]: Without dead ends: 4143 [2023-12-22 16:23:51,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 16:23:51,163 INFO L413 NwaCegarLoop]: 604 mSDtfsCounter, 513 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 3384 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 3399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 3384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.2s IncrementalHoareTripleChecker+Time [2023-12-22 16:23:51,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [513 Valid, 616 Invalid, 3399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 3384 Invalid, 0 Unknown, 0 Unchecked, 14.2s Time] [2023-12-22 16:23:51,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4143 states. [2023-12-22 16:23:51,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4143 to 4143. [2023-12-22 16:23:51,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4143 states, 4142 states have (on average 1.2040077257363593) internal successors, (4987), 4142 states have internal predecessors, (4987), 0 states have call successors, (0), 0 states 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 16:23:51,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4143 states to 4143 states and 4987 transitions. [2023-12-22 16:23:51,267 INFO L78 Accepts]: Start accepts. Automaton has 4143 states and 4987 transitions. Word has length 298 [2023-12-22 16:23:51,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 16:23:51,268 INFO L495 AbstractCegarLoop]: Abstraction has 4143 states and 4987 transitions. [2023-12-22 16:23:51,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.5) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 0 states 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 16:23:51,269 INFO L276 IsEmpty]: Start isEmpty. Operand 4143 states and 4987 transitions. [2023-12-22 16:23:51,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 632 [2023-12-22 16:23:51,277 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 16:23:51,282 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:23:51,285 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-22 16:23:51,485 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 16:23:51,486 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 16:23:51,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 16:23:51,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1573040585, now seen corresponding path program 1 times [2023-12-22 16:23:51,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 16:23:51,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [360385140] [2023-12-22 16:23:51,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 16:23:51,489 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 16:23:51,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 16:23:51,490 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 16:23:51,496 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 16:23:51,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 16:23:51,652 INFO L262 TraceCheckSpWp]: Trace formula consists of 679 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 16:23:51,660 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 16:23:53,683 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2023-12-22 16:23:53,683 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 16:23:53,683 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 16:23:53,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [360385140] [2023-12-22 16:23:53,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [360385140] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 16:23:53,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 16:23:53,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 16:23:53,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363148734] [2023-12-22 16:23:53,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 16:23:53,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 16:23:53,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 16:23:53,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 16:23:53,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 16:23:53,685 INFO L87 Difference]: Start difference. First operand 4143 states and 4987 transitions. Second operand has 3 states, 3 states have (on average 180.0) internal successors, (540), 2 states have internal predecessors, (540), 0 states have call successors, (0), 0 states 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 16:24:07,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 16:24:07,366 INFO L93 Difference]: Finished difference Result 6905 states and 8578 transitions. [2023-12-22 16:24:07,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 16:24:07,369 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 180.0) internal successors, (540), 2 states have internal predecessors, (540), 0 states have call successors, (0), 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 631 [2023-12-22 16:24:07,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 16:24:07,378 INFO L225 Difference]: With dead ends: 6905 [2023-12-22 16:24:07,378 INFO L226 Difference]: Without dead ends: 4143 [2023-12-22 16:24:07,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 630 GetRequests, 629 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 16:24:07,380 INFO L413 NwaCegarLoop]: 628 mSDtfsCounter, 176 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1999 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 634 SdHoareTripleChecker+Invalid, 2009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.6s IncrementalHoareTripleChecker+Time [2023-12-22 16:24:07,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 634 Invalid, 2009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1999 Invalid, 0 Unknown, 0 Unchecked, 13.6s Time] [2023-12-22 16:24:07,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4143 states. [2023-12-22 16:24:07,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4143 to 4143. [2023-12-22 16:24:07,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4143 states, 4142 states have (on average 1.2013520038628682) internal successors, (4976), 4142 states have internal predecessors, (4976), 0 states have call successors, (0), 0 states 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 16:24:07,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4143 states to 4143 states and 4976 transitions. [2023-12-22 16:24:07,429 INFO L78 Accepts]: Start accepts. Automaton has 4143 states and 4976 transitions. Word has length 631 [2023-12-22 16:24:07,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 16:24:07,430 INFO L495 AbstractCegarLoop]: Abstraction has 4143 states and 4976 transitions. [2023-12-22 16:24:07,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 180.0) internal successors, (540), 2 states have internal predecessors, (540), 0 states have call successors, (0), 0 states 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 16:24:07,431 INFO L276 IsEmpty]: Start isEmpty. Operand 4143 states and 4976 transitions. [2023-12-22 16:24:07,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 838 [2023-12-22 16:24:07,443 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 16:24:07,444 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:24:07,450 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-12-22 16:24:07,648 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 16:24:07,649 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 16:24:07,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 16:24:07,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1395524357, now seen corresponding path program 1 times [2023-12-22 16:24:07,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 16:24:07,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [182429602] [2023-12-22 16:24:07,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 16:24:07,652 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 16:24:07,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 16:24:07,653 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 16:24:07,654 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 16:24:07,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 16:24:07,851 INFO L262 TraceCheckSpWp]: Trace formula consists of 888 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 16:24:07,858 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 16:24:08,943 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 341 trivial. 0 not checked. [2023-12-22 16:24:08,944 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 16:24:08,944 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 16:24:08,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [182429602] [2023-12-22 16:24:08,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [182429602] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 16:24:08,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 16:24:08,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 16:24:08,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327501490] [2023-12-22 16:24:08,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 16:24:08,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 16:24:08,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 16:24:08,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 16:24:08,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 16:24:08,946 INFO L87 Difference]: Start difference. First operand 4143 states and 4976 transitions. Second operand has 3 states, 3 states have (on average 173.0) internal successors, (519), 2 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 16:24:27,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 16:24:27,929 INFO L93 Difference]: Finished difference Result 8285 states and 10681 transitions. [2023-12-22 16:24:27,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 16:24:27,930 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 173.0) internal successors, (519), 2 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 837 [2023-12-22 16:24:27,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 16:24:27,941 INFO L225 Difference]: With dead ends: 8285 [2023-12-22 16:24:27,942 INFO L226 Difference]: Without dead ends: 5523 [2023-12-22 16:24:27,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 836 GetRequests, 835 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 16:24:27,944 INFO L413 NwaCegarLoop]: 577 mSDtfsCounter, 181 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2212 mSolverCounterSat, 514 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 2726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 514 IncrementalHoareTripleChecker+Valid, 2212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.8s IncrementalHoareTripleChecker+Time [2023-12-22 16:24:27,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 583 Invalid, 2726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [514 Valid, 2212 Invalid, 0 Unknown, 0 Unchecked, 18.8s Time] [2023-12-22 16:24:27,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5523 states. [2023-12-22 16:24:27,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5523 to 5523. [2023-12-22 16:24:27,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5523 states, 5522 states have (on average 1.1923216226005071) internal successors, (6584), 5522 states have internal predecessors, (6584), 0 states have call successors, (0), 0 states 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 16:24:27,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5523 states to 5523 states and 6584 transitions. [2023-12-22 16:24:27,997 INFO L78 Accepts]: Start accepts. Automaton has 5523 states and 6584 transitions. Word has length 837 [2023-12-22 16:24:27,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 16:24:27,998 INFO L495 AbstractCegarLoop]: Abstraction has 5523 states and 6584 transitions. [2023-12-22 16:24:27,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.0) internal successors, (519), 2 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 16:24:27,998 INFO L276 IsEmpty]: Start isEmpty. Operand 5523 states and 6584 transitions. [2023-12-22 16:24:28,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 924 [2023-12-22 16:24:28,004 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 16:24:28,004 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:24:28,008 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 16:24:28,207 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 16:24:28,208 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 16:24:28,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 16:24:28,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1107905444, now seen corresponding path program 1 times [2023-12-22 16:24:28,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 16:24:28,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [688217287] [2023-12-22 16:24:28,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 16:24:28,211 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 16:24:28,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 16:24:28,212 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 16:24:28,236 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 16:24:28,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 16:24:28,435 INFO L262 TraceCheckSpWp]: Trace formula consists of 985 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 16:24:28,459 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 16:24:29,493 INFO L134 CoverageAnalysis]: Checked inductivity of 534 backedges. 65 proven. 172 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2023-12-22 16:24:29,493 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 16:24:29,918 INFO L134 CoverageAnalysis]: Checked inductivity of 534 backedges. 237 proven. 0 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2023-12-22 16:24:29,918 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 16:24:29,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [688217287] [2023-12-22 16:24:29,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [688217287] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-22 16:24:29,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-22 16:24:29,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-22 16:24:29,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235349351] [2023-12-22 16:24:29,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 16:24:29,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 16:24:29,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 16:24:29,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 16:24:29,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-22 16:24:29,920 INFO L87 Difference]: Start difference. First operand 5523 states and 6584 transitions. Second operand has 3 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 0 states have call successors, (0), 0 states 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 16:24:59,460 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 16:25:10,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 16:25:10,999 INFO L93 Difference]: Finished difference Result 12425 states and 15505 transitions. [2023-12-22 16:25:11,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 16:25:11,004 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 0 states have call successors, (0), 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 923 [2023-12-22 16:25:11,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 16:25:11,024 INFO L225 Difference]: With dead ends: 12425 [2023-12-22 16:25:11,024 INFO L226 Difference]: Without dead ends: 8283 [2023-12-22 16:25:11,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1844 GetRequests, 1841 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-22 16:25:11,033 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 692 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1981 mSolverCounterSat, 796 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 692 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 2777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 796 IncrementalHoareTripleChecker+Valid, 1981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.9s IncrementalHoareTripleChecker+Time [2023-12-22 16:25:11,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [692 Valid, 306 Invalid, 2777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [796 Valid, 1981 Invalid, 0 Unknown, 0 Unchecked, 40.9s Time] [2023-12-22 16:25:11,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8283 states. [2023-12-22 16:25:11,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8283 to 8283. [2023-12-22 16:25:11,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8283 states, 8282 states have (on average 1.1943974885293407) internal successors, (9892), 8282 states have internal predecessors, (9892), 0 states have call successors, (0), 0 states 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 16:25:11,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8283 states to 8283 states and 9892 transitions. [2023-12-22 16:25:11,138 INFO L78 Accepts]: Start accepts. Automaton has 8283 states and 9892 transitions. Word has length 923 [2023-12-22 16:25:11,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 16:25:11,139 INFO L495 AbstractCegarLoop]: Abstraction has 8283 states and 9892 transitions. [2023-12-22 16:25:11,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 0 states have call successors, (0), 0 states 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 16:25:11,139 INFO L276 IsEmpty]: Start isEmpty. Operand 8283 states and 9892 transitions. [2023-12-22 16:25:11,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 931 [2023-12-22 16:25:11,145 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 16:25:11,147 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 3, 3, 3, 3, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:25:11,153 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 16:25:11,351 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 16:25:11,351 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 16:25:11,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 16:25:11,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1926419241, now seen corresponding path program 1 times [2023-12-22 16:25:11,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 16:25:11,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [749645015] [2023-12-22 16:25:11,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 16:25:11,355 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 16:25:11,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 16:25:11,356 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 16:25:11,358 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 16:25:11,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 16:25:11,634 INFO L262 TraceCheckSpWp]: Trace formula consists of 989 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 16:25:11,641 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 16:25:14,508 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 65 proven. 186 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2023-12-22 16:25:14,508 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 16:25:15,913 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 251 proven. 0 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2023-12-22 16:25:15,913 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 16:25:15,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [749645015] [2023-12-22 16:25:15,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [749645015] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-22 16:25:15,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-22 16:25:15,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-22 16:25:15,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922032366] [2023-12-22 16:25:15,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 16:25:15,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 16:25:15,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 16:25:15,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 16:25:15,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-22 16:25:15,916 INFO L87 Difference]: Start difference. First operand 8283 states and 9892 transitions. Second operand has 3 states, 3 states have (on average 211.33333333333334) internal successors, (634), 3 states have internal predecessors, (634), 0 states have call successors, (0), 0 states 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 16:25:51,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 16:25:51,963 INFO L93 Difference]: Finished difference Result 20015 states and 24691 transitions. [2023-12-22 16:25:51,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 16:25:51,965 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 211.33333333333334) internal successors, (634), 3 states have internal predecessors, (634), 0 states have call successors, (0), 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 930 [2023-12-22 16:25:51,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 16:25:51,999 INFO L225 Difference]: With dead ends: 20015 [2023-12-22 16:25:51,999 INFO L226 Difference]: Without dead ends: 13113 [2023-12-22 16:25:52,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1858 GetRequests, 1855 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-22 16:25:52,007 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 630 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1962 mSolverCounterSat, 1154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 630 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 3116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1154 IncrementalHoareTripleChecker+Valid, 1962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.9s IncrementalHoareTripleChecker+Time [2023-12-22 16:25:52,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [630 Valid, 83 Invalid, 3116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1154 Valid, 1962 Invalid, 0 Unknown, 0 Unchecked, 35.9s Time] [2023-12-22 16:25:52,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13113 states. [2023-12-22 16:25:52,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13113 to 13113. [2023-12-22 16:25:52,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13113 states, 13112 states have (on average 1.2178157413056743) internal successors, (15968), 13112 states have internal predecessors, (15968), 0 states have call successors, (0), 0 states 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 16:25:52,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13113 states to 13113 states and 15968 transitions. [2023-12-22 16:25:52,141 INFO L78 Accepts]: Start accepts. Automaton has 13113 states and 15968 transitions. Word has length 930 [2023-12-22 16:25:52,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 16:25:52,141 INFO L495 AbstractCegarLoop]: Abstraction has 13113 states and 15968 transitions. [2023-12-22 16:25:52,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 211.33333333333334) internal successors, (634), 3 states have internal predecessors, (634), 0 states have call successors, (0), 0 states 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 16:25:52,142 INFO L276 IsEmpty]: Start isEmpty. Operand 13113 states and 15968 transitions. [2023-12-22 16:25:52,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 949 [2023-12-22 16:25:52,151 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 16:25:52,152 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:25:52,159 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2023-12-22 16:25:52,356 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 16:25:52,357 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 16:25:52,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 16:25:52,357 INFO L85 PathProgramCache]: Analyzing trace with hash 101708604, now seen corresponding path program 1 times [2023-12-22 16:25:52,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 16:25:52,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1248587266] [2023-12-22 16:25:52,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 16:25:52,361 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 16:25:52,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 16:25:52,362 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 16:25:52,382 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 16:25:52,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 16:25:52,618 INFO L262 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 16:25:52,633 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 16:25:52,773 INFO L134 CoverageAnalysis]: Checked inductivity of 584 backedges. 287 proven. 0 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2023-12-22 16:25:52,773 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 16:25:52,773 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 16:25:52,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1248587266] [2023-12-22 16:25:52,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1248587266] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 16:25:52,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 16:25:52,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 16:25:52,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381435180] [2023-12-22 16:25:52,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 16:25:52,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 16:25:52,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 16:25:52,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 16:25:52,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 16:25:52,775 INFO L87 Difference]: Start difference. First operand 13113 states and 15968 transitions. Second operand has 3 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 0 states have call successors, (0), 0 states 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 16:26:13,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 16:26:13,873 INFO L93 Difference]: Finished difference Result 33125 states and 40805 transitions. [2023-12-22 16:26:13,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 16:26:13,888 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 0 states have call successors, (0), 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 948 [2023-12-22 16:26:13,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 16:26:13,914 INFO L225 Difference]: With dead ends: 33125 [2023-12-22 16:26:13,915 INFO L226 Difference]: Without dead ends: 21393 [2023-12-22 16:26:13,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 947 GetRequests, 946 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 16:26:13,926 INFO L413 NwaCegarLoop]: 1281 mSDtfsCounter, 581 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2390 mSolverCounterSat, 428 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 581 SdHoareTripleChecker+Valid, 1287 SdHoareTripleChecker+Invalid, 2818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 428 IncrementalHoareTripleChecker+Valid, 2390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.9s IncrementalHoareTripleChecker+Time [2023-12-22 16:26:13,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [581 Valid, 1287 Invalid, 2818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [428 Valid, 2390 Invalid, 0 Unknown, 0 Unchecked, 20.9s Time] [2023-12-22 16:26:13,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21393 states. [2023-12-22 16:26:14,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21393 to 21393. [2023-12-22 16:26:14,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21393 states, 21392 states have (on average 1.1530946148092744) internal successors, (24667), 21392 states have internal predecessors, (24667), 0 states have call successors, (0), 0 states 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 16:26:14,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21393 states to 21393 states and 24667 transitions. [2023-12-22 16:26:14,225 INFO L78 Accepts]: Start accepts. Automaton has 21393 states and 24667 transitions. Word has length 948 [2023-12-22 16:26:14,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 16:26:14,226 INFO L495 AbstractCegarLoop]: Abstraction has 21393 states and 24667 transitions. [2023-12-22 16:26:14,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 0 states have call successors, (0), 0 states 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 16:26:14,226 INFO L276 IsEmpty]: Start isEmpty. Operand 21393 states and 24667 transitions. [2023-12-22 16:26:14,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 967 [2023-12-22 16:26:14,237 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 16:26:14,238 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 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, 3, 3, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:26:14,258 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 16:26:14,443 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 16:26:14,444 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 16:26:14,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 16:26:14,445 INFO L85 PathProgramCache]: Analyzing trace with hash 123872725, now seen corresponding path program 1 times [2023-12-22 16:26:14,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 16:26:14,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1521095203] [2023-12-22 16:26:14,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 16:26:14,448 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 16:26:14,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 16:26:14,449 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 16:26:14,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-22 16:26:14,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 16:26:14,676 INFO L262 TraceCheckSpWp]: Trace formula consists of 1028 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 16:26:14,695 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 16:26:16,061 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 0 proven. 309 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2023-12-22 16:26:16,062 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 16:26:16,614 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 287 proven. 22 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2023-12-22 16:26:16,614 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 16:26:16,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1521095203] [2023-12-22 16:26:16,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1521095203] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 16:26:16,615 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 16:26:16,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-12-22 16:26:16,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441603370] [2023-12-22 16:26:16,615 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 16:26:16,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-22 16:26:16,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 16:26:16,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-22 16:26:16,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-12-22 16:26:16,618 INFO L87 Difference]: Start difference. First operand 21393 states and 24667 transitions. Second operand has 7 states, 7 states have (on average 189.28571428571428) internal successors, (1325), 7 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states 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 16:28:16,386 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 16:28:25,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 16:28:25,709 INFO L93 Difference]: Finished difference Result 61415 states and 71606 transitions. [2023-12-22 16:28:25,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-22 16:28:25,709 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 189.28571428571428) internal successors, (1325), 7 states have internal predecessors, (1325), 0 states have call successors, (0), 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 966 [2023-12-22 16:28:25,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 16:28:25,773 INFO L225 Difference]: With dead ends: 61415 [2023-12-22 16:28:25,773 INFO L226 Difference]: Without dead ends: 41403 [2023-12-22 16:28:25,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1932 GetRequests, 1926 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-22 16:28:25,790 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 3747 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 11804 mSolverCounterSat, 2103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 120.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3747 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 13907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2103 IncrementalHoareTripleChecker+Valid, 11804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 128.4s IncrementalHoareTripleChecker+Time [2023-12-22 16:28:25,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3747 Valid, 286 Invalid, 13907 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2103 Valid, 11804 Invalid, 0 Unknown, 0 Unchecked, 128.4s Time] [2023-12-22 16:28:25,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41403 states. [2023-12-22 16:28:26,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41403 to 31743. [2023-12-22 16:28:26,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31743 states, 31742 states have (on average 1.1445718606262996) internal successors, (36331), 31742 states have internal predecessors, (36331), 0 states have call successors, (0), 0 states 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 16:28:26,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31743 states to 31743 states and 36331 transitions. [2023-12-22 16:28:26,222 INFO L78 Accepts]: Start accepts. Automaton has 31743 states and 36331 transitions. Word has length 966 [2023-12-22 16:28:26,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 16:28:26,223 INFO L495 AbstractCegarLoop]: Abstraction has 31743 states and 36331 transitions. [2023-12-22 16:28:26,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 189.28571428571428) internal successors, (1325), 7 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states 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 16:28:26,224 INFO L276 IsEmpty]: Start isEmpty. Operand 31743 states and 36331 transitions. [2023-12-22 16:28:26,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1063 [2023-12-22 16:28:26,233 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 16:28:26,234 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:28:26,241 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 16:28:26,438 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 16:28:26,439 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 16:28:26,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 16:28:26,439 INFO L85 PathProgramCache]: Analyzing trace with hash -991822579, now seen corresponding path program 1 times [2023-12-22 16:28:26,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 16:28:26,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1970239613] [2023-12-22 16:28:26,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 16:28:26,443 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 16:28:26,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 16:28:26,444 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 16:28:26,445 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 16:28:26,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 16:28:26,862 INFO L262 TraceCheckSpWp]: Trace formula consists of 1134 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 16:28:26,868 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 16:28:27,068 INFO L134 CoverageAnalysis]: Checked inductivity of 919 backedges. 344 proven. 0 refuted. 0 times theorem prover too weak. 575 trivial. 0 not checked. [2023-12-22 16:28:27,068 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 16:28:27,069 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 16:28:27,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1970239613] [2023-12-22 16:28:27,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1970239613] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 16:28:27,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 16:28:27,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 16:28:27,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157687028] [2023-12-22 16:28:27,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 16:28:27,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 16:28:27,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 16:28:27,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 16:28:27,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 16:28:27,071 INFO L87 Difference]: Start difference. First operand 31743 states and 36331 transitions. Second operand has 3 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 0 states have call successors, (0), 0 states 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 16:28:49,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 16:28:49,967 INFO L93 Difference]: Finished difference Result 71765 states and 83331 transitions. [2023-12-22 16:28:49,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 16:28:49,971 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 0 states have call successors, (0), 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 1062 [2023-12-22 16:28:49,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 16:28:50,035 INFO L225 Difference]: With dead ends: 71765 [2023-12-22 16:28:50,036 INFO L226 Difference]: Without dead ends: 42093 [2023-12-22 16:28:50,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1061 GetRequests, 1060 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 16:28:50,056 INFO L413 NwaCegarLoop]: 1255 mSDtfsCounter, 605 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2358 mSolverCounterSat, 435 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 605 SdHoareTripleChecker+Valid, 1261 SdHoareTripleChecker+Invalid, 2793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 435 IncrementalHoareTripleChecker+Valid, 2358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.5s IncrementalHoareTripleChecker+Time [2023-12-22 16:28:50,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [605 Valid, 1261 Invalid, 2793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [435 Valid, 2358 Invalid, 0 Unknown, 0 Unchecked, 22.5s Time] [2023-12-22 16:28:50,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42093 states. [2023-12-22 16:28:50,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42093 to 41403. [2023-12-22 16:28:50,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41403 states, 41402 states have (on average 1.1348968648857543) internal successors, (46987), 41402 states have internal predecessors, (46987), 0 states have call successors, (0), 0 states 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 16:28:50,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41403 states to 41403 states and 46987 transitions. [2023-12-22 16:28:50,456 INFO L78 Accepts]: Start accepts. Automaton has 41403 states and 46987 transitions. Word has length 1062 [2023-12-22 16:28:50,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 16:28:50,457 INFO L495 AbstractCegarLoop]: Abstraction has 41403 states and 46987 transitions. [2023-12-22 16:28:50,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 0 states have call successors, (0), 0 states 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 16:28:50,457 INFO L276 IsEmpty]: Start isEmpty. Operand 41403 states and 46987 transitions. [2023-12-22 16:28:50,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1084 [2023-12-22 16:28:50,596 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 16:28:50,597 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:28:50,610 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 16:28:50,797 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 16:28:50,798 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 16:28:50,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 16:28:50,798 INFO L85 PathProgramCache]: Analyzing trace with hash -152982859, now seen corresponding path program 1 times [2023-12-22 16:28:50,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 16:28:50,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1670734500] [2023-12-22 16:28:50,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 16:28:50,802 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 16:28:50,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 16:28:50,803 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 16:28:50,805 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 16:28:51,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 16:28:51,155 INFO L262 TraceCheckSpWp]: Trace formula consists of 1153 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 16:28:51,160 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 16:28:51,220 INFO L134 CoverageAnalysis]: Checked inductivity of 982 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 895 trivial. 0 not checked. [2023-12-22 16:28:51,220 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 16:28:51,220 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 16:28:51,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1670734500] [2023-12-22 16:28:51,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1670734500] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 16:28:51,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 16:28:51,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 16:28:51,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530868130] [2023-12-22 16:28:51,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 16:28:51,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 16:28:51,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 16:28:51,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 16:28:51,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 16:28:51,238 INFO L87 Difference]: Start difference. First operand 41403 states and 46987 transitions. Second operand has 3 states, 3 states have (on average 180.66666666666666) internal successors, (542), 3 states have internal predecessors, (542), 0 states have call successors, (0), 0 states 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 16:29:11,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 16:29:11,150 INFO L93 Difference]: Finished difference Result 86945 states and 99440 transitions. [2023-12-22 16:29:11,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 16:29:11,164 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 180.66666666666666) internal successors, (542), 3 states have internal predecessors, (542), 0 states have call successors, (0), 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 1083 [2023-12-22 16:29:11,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 16:29:11,215 INFO L225 Difference]: With dead ends: 86945 [2023-12-22 16:29:11,215 INFO L226 Difference]: Without dead ends: 48303 [2023-12-22 16:29:11,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1082 GetRequests, 1081 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 16:29:11,234 INFO L413 NwaCegarLoop]: 1255 mSDtfsCounter, 670 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2122 mSolverCounterSat, 531 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 670 SdHoareTripleChecker+Valid, 1261 SdHoareTripleChecker+Invalid, 2653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 531 IncrementalHoareTripleChecker+Valid, 2122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.5s IncrementalHoareTripleChecker+Time [2023-12-22 16:29:11,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [670 Valid, 1261 Invalid, 2653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [531 Valid, 2122 Invalid, 0 Unknown, 0 Unchecked, 19.5s Time] [2023-12-22 16:29:11,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48303 states. [2023-12-22 16:29:11,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48303 to 48303. [2023-12-22 16:29:11,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48303 states, 48302 states have (on average 1.1127489544946378) internal successors, (53748), 48302 states have internal predecessors, (53748), 0 states have call successors, (0), 0 states 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 16:29:11,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48303 states to 48303 states and 53748 transitions. [2023-12-22 16:29:11,822 INFO L78 Accepts]: Start accepts. Automaton has 48303 states and 53748 transitions. Word has length 1083 [2023-12-22 16:29:11,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 16:29:11,823 INFO L495 AbstractCegarLoop]: Abstraction has 48303 states and 53748 transitions. [2023-12-22 16:29:11,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 180.66666666666666) internal successors, (542), 3 states have internal predecessors, (542), 0 states have call successors, (0), 0 states 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 16:29:11,824 INFO L276 IsEmpty]: Start isEmpty. Operand 48303 states and 53748 transitions. [2023-12-22 16:29:11,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1188 [2023-12-22 16:29:11,835 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 16:29:11,835 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:29:11,841 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-12-22 16:29:12,041 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 16:29:12,041 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 16:29:12,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 16:29:12,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1241045183, now seen corresponding path program 1 times [2023-12-22 16:29:12,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 16:29:12,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [151454576] [2023-12-22 16:29:12,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 16:29:12,046 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 16:29:12,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 16:29:12,047 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 16:29:12,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-22 16:29:12,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 16:29:12,545 INFO L262 TraceCheckSpWp]: Trace formula consists of 1267 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-22 16:29:12,554 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 16:29:14,030 INFO L134 CoverageAnalysis]: Checked inductivity of 1419 backedges. 109 proven. 1013 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2023-12-22 16:29:14,031 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 16:29:20,170 INFO L134 CoverageAnalysis]: Checked inductivity of 1419 backedges. 740 proven. 104 refuted. 0 times theorem prover too weak. 575 trivial. 0 not checked. [2023-12-22 16:29:20,171 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 16:29:20,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [151454576] [2023-12-22 16:29:20,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [151454576] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 16:29:20,171 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 16:29:20,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 8 [2023-12-22 16:29:20,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516229796] [2023-12-22 16:29:20,171 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 16:29:20,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-22 16:29:20,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 16:29:20,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-22 16:29:20,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-12-22 16:29:20,174 INFO L87 Difference]: Start difference. First operand 48303 states and 53748 transitions. Second operand has 8 states, 8 states have (on average 202.5) internal successors, (1620), 8 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states 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 16:29:56,316 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 16:31:00,792 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 16:31:21,090 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 16:31:29,468 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 16:31:31,781 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 16:31:46,291 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 16:31:48,382 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 16:32:00,932 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 16:32:12,049 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 16:32:24,399 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 16:32:41,740 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.92s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 16:32:47,089 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 16:33:12,688 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.16s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 16:33:16,386 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 16:33:45,636 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 16:34:03,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 16:34:03,114 INFO L93 Difference]: Finished difference Result 115235 states and 130658 transitions. [2023-12-22 16:34:03,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-22 16:34:03,132 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 202.5) internal successors, (1620), 8 states have internal predecessors, (1620), 0 states have call successors, (0), 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 1187 [2023-12-22 16:34:03,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 16:34:03,208 INFO L225 Difference]: With dead ends: 115235 [2023-12-22 16:34:03,208 INFO L226 Difference]: Without dead ends: 69693 [2023-12-22 16:34:03,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2374 GetRequests, 2367 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-22 16:34:03,239 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 5777 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 13479 mSolverCounterSat, 3069 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 256.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5777 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 16548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3069 IncrementalHoareTripleChecker+Valid, 13479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 281.7s IncrementalHoareTripleChecker+Time [2023-12-22 16:34:03,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5777 Valid, 84 Invalid, 16548 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3069 Valid, 13479 Invalid, 0 Unknown, 0 Unchecked, 281.7s Time] [2023-12-22 16:34:03,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69693 states. [2023-12-22 16:34:03,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69693 to 57273. [2023-12-22 16:34:04,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57273 states, 57272 states have (on average 1.1273222517111328) internal successors, (64564), 57272 states have internal predecessors, (64564), 0 states have call successors, (0), 0 states 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 16:34:04,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57273 states to 57273 states and 64564 transitions. [2023-12-22 16:34:04,107 INFO L78 Accepts]: Start accepts. Automaton has 57273 states and 64564 transitions. Word has length 1187 [2023-12-22 16:34:04,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 16:34:04,108 INFO L495 AbstractCegarLoop]: Abstraction has 57273 states and 64564 transitions. [2023-12-22 16:34:04,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 202.5) internal successors, (1620), 8 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states 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 16:34:04,108 INFO L276 IsEmpty]: Start isEmpty. Operand 57273 states and 64564 transitions. [2023-12-22 16:34:04,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1347 [2023-12-22 16:34:04,122 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 16:34:04,124 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:34:04,134 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2023-12-22 16:34:04,329 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 16:34:04,330 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 16:34:04,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 16:34:04,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1164947861, now seen corresponding path program 1 times [2023-12-22 16:34:04,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 16:34:04,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [894986159] [2023-12-22 16:34:04,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 16:34:04,335 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 16:34:04,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 16:34:04,336 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 16:34:04,338 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 16:34:04,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 16:34:04,813 INFO L262 TraceCheckSpWp]: Trace formula consists of 1426 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 16:34:04,819 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 16:34:04,872 INFO L134 CoverageAnalysis]: Checked inductivity of 1769 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 1660 trivial. 0 not checked. [2023-12-22 16:34:04,872 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 16:34:04,873 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 16:34:04,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [894986159] [2023-12-22 16:34:04,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [894986159] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 16:34:04,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 16:34:04,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 16:34:04,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938713305] [2023-12-22 16:34:04,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 16:34:04,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 16:34:04,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 16:34:04,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 16:34:04,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 16:34:04,874 INFO L87 Difference]: Start difference. First operand 57273 states and 64564 transitions. Second operand has 3 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 0 states have call successors, (0), 0 states 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 16:34:29,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 16:34:29,496 INFO L93 Difference]: Finished difference Result 124205 states and 143360 transitions. [2023-12-22 16:34:29,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 16:34:29,497 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 0 states have call successors, (0), 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 1346 [2023-12-22 16:34:29,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 16:34:29,588 INFO L225 Difference]: With dead ends: 124205 [2023-12-22 16:34:29,588 INFO L226 Difference]: Without dead ends: 71763 [2023-12-22 16:34:29,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1345 GetRequests, 1344 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 16:34:29,617 INFO L413 NwaCegarLoop]: 1039 mSDtfsCounter, 705 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2256 mSolverCounterSat, 386 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 1045 SdHoareTripleChecker+Invalid, 2642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 386 IncrementalHoareTripleChecker+Valid, 2256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.0s IncrementalHoareTripleChecker+Time [2023-12-22 16:34:29,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [705 Valid, 1045 Invalid, 2642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [386 Valid, 2256 Invalid, 0 Unknown, 0 Unchecked, 24.0s Time] [2023-12-22 16:34:29,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71763 states. [2023-12-22 16:34:30,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71763 to 71763. [2023-12-22 16:34:30,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71763 states, 71762 states have (on average 1.1248571667456313) internal successors, (80722), 71762 states have internal predecessors, (80722), 0 states have call successors, (0), 0 states 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 16:34:30,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71763 states to 71763 states and 80722 transitions. [2023-12-22 16:34:30,749 INFO L78 Accepts]: Start accepts. Automaton has 71763 states and 80722 transitions. Word has length 1346 [2023-12-22 16:34:30,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 16:34:30,750 INFO L495 AbstractCegarLoop]: Abstraction has 71763 states and 80722 transitions. [2023-12-22 16:34:30,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 0 states have call successors, (0), 0 states 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 16:34:30,750 INFO L276 IsEmpty]: Start isEmpty. Operand 71763 states and 80722 transitions. [2023-12-22 16:34:30,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1400 [2023-12-22 16:34:30,792 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 16:34:30,792 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:34:30,799 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 16:34:30,998 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 16:34:30,999 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 16:34:30,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 16:34:31,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1875912143, now seen corresponding path program 1 times [2023-12-22 16:34:31,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 16:34:31,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [563467646] [2023-12-22 16:34:31,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 16:34:31,005 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 16:34:31,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 16:34:31,006 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 16:34:31,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-12-22 16:34:31,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 16:34:31,462 INFO L262 TraceCheckSpWp]: Trace formula consists of 1492 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-22 16:34:31,470 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 16:34:33,554 INFO L134 CoverageAnalysis]: Checked inductivity of 2069 backedges. 535 proven. 1215 refuted. 0 times theorem prover too weak. 319 trivial. 0 not checked. [2023-12-22 16:34:33,554 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 16:34:34,369 INFO L134 CoverageAnalysis]: Checked inductivity of 2069 backedges. 802 proven. 0 refuted. 0 times theorem prover too weak. 1267 trivial. 0 not checked. [2023-12-22 16:34:34,370 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 16:34:34,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [563467646] [2023-12-22 16:34:34,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [563467646] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-22 16:34:34,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-22 16:34:34,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2023-12-22 16:34:34,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940627171] [2023-12-22 16:34:34,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 16:34:34,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 16:34:34,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 16:34:34,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 16:34:34,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-22 16:34:34,372 INFO L87 Difference]: Start difference. First operand 71763 states and 80722 transitions. Second operand has 3 states, 3 states have (on average 226.0) internal successors, (678), 3 states have internal predecessors, (678), 0 states have call successors, (0), 0 states 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 16:35:00,064 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 16:35:15,094 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 16:35:18,394 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.26s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 16:35:28,482 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 16:35:38,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 16:35:38,254 INFO L93 Difference]: Finished difference Result 146975 states and 168123 transitions. [2023-12-22 16:35:38,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 16:35:38,255 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 226.0) internal successors, (678), 3 states have internal predecessors, (678), 0 states have call successors, (0), 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 1399 [2023-12-22 16:35:38,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 16:35:38,431 INFO L225 Difference]: With dead ends: 146975 [2023-12-22 16:35:38,431 INFO L226 Difference]: Without dead ends: 80043 [2023-12-22 16:35:38,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2796 GetRequests, 2791 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-22 16:35:38,471 INFO L413 NwaCegarLoop]: 1063 mSDtfsCounter, 654 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2239 mSolverCounterSat, 468 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 58.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 654 SdHoareTripleChecker+Valid, 1069 SdHoareTripleChecker+Invalid, 2708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 468 IncrementalHoareTripleChecker+Valid, 2239 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 63.1s IncrementalHoareTripleChecker+Time [2023-12-22 16:35:38,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [654 Valid, 1069 Invalid, 2708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [468 Valid, 2239 Invalid, 1 Unknown, 0 Unchecked, 63.1s Time] [2023-12-22 16:35:38,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80043 states. [2023-12-22 16:35:39,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80043 to 80043. [2023-12-22 16:35:39,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80043 states, 80042 states have (on average 1.1120661652632369) internal successors, (89012), 80042 states have internal predecessors, (89012), 0 states have call successors, (0), 0 states 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 16:35:39,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80043 states to 80043 states and 89012 transitions. [2023-12-22 16:35:39,497 INFO L78 Accepts]: Start accepts. Automaton has 80043 states and 89012 transitions. Word has length 1399 [2023-12-22 16:35:39,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 16:35:39,497 INFO L495 AbstractCegarLoop]: Abstraction has 80043 states and 89012 transitions. [2023-12-22 16:35:39,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 226.0) internal successors, (678), 3 states have internal predecessors, (678), 0 states have call successors, (0), 0 states 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 16:35:39,498 INFO L276 IsEmpty]: Start isEmpty. Operand 80043 states and 89012 transitions. [2023-12-22 16:35:39,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1404 [2023-12-22 16:35:39,543 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 16:35:39,544 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:35:39,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-12-22 16:35:39,762 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 16:35:39,762 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 16:35:39,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 16:35:39,763 INFO L85 PathProgramCache]: Analyzing trace with hash -97506015, now seen corresponding path program 1 times [2023-12-22 16:35:39,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 16:35:39,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1138107551] [2023-12-22 16:35:39,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 16:35:39,767 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 16:35:39,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 16:35:39,768 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 16:35:39,793 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 16:35:40,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 16:35:40,182 INFO L262 TraceCheckSpWp]: Trace formula consists of 1500 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 16:35:40,189 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 16:35:40,358 INFO L134 CoverageAnalysis]: Checked inductivity of 2003 backedges. 553 proven. 0 refuted. 0 times theorem prover too weak. 1450 trivial. 0 not checked. [2023-12-22 16:35:40,358 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 16:35:40,358 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 16:35:40,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1138107551] [2023-12-22 16:35:40,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1138107551] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 16:35:40,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 16:35:40,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 16:35:40,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470487632] [2023-12-22 16:35:40,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 16:35:40,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 16:35:40,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 16:35:40,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 16:35:40,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 16:35:40,360 INFO L87 Difference]: Start difference. First operand 80043 states and 89012 transitions. Second operand has 3 states, 3 states have (on average 211.0) internal successors, (633), 3 states have internal predecessors, (633), 0 states have call successors, (0), 0 states 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 16:36:05,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 16:36:05,041 INFO L93 Difference]: Finished difference Result 173195 states and 194480 transitions. [2023-12-22 16:36:05,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 16:36:05,063 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 211.0) internal successors, (633), 3 states have internal predecessors, (633), 0 states have call successors, (0), 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 1403 [2023-12-22 16:36:05,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 16:36:05,253 INFO L225 Difference]: With dead ends: 173195 [2023-12-22 16:36:05,254 INFO L226 Difference]: Without dead ends: 93153 [2023-12-22 16:36:05,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1402 GetRequests, 1401 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 16:36:05,288 INFO L413 NwaCegarLoop]: 1213 mSDtfsCounter, 617 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 2067 mSolverCounterSat, 511 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 617 SdHoareTripleChecker+Valid, 1218 SdHoareTripleChecker+Invalid, 2578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 511 IncrementalHoareTripleChecker+Valid, 2067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.9s IncrementalHoareTripleChecker+Time [2023-12-22 16:36:05,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [617 Valid, 1218 Invalid, 2578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [511 Valid, 2067 Invalid, 0 Unknown, 0 Unchecked, 23.9s Time] [2023-12-22 16:36:05,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93153 states. [2023-12-22 16:36:06,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93153 to 91773. [2023-12-22 16:36:06,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91773 states, 91772 states have (on average 1.1022643071960947) internal successors, (101157), 91772 states have internal predecessors, (101157), 0 states have call successors, (0), 0 states 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 16:36:06,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91773 states to 91773 states and 101157 transitions. [2023-12-22 16:36:06,595 INFO L78 Accepts]: Start accepts. Automaton has 91773 states and 101157 transitions. Word has length 1403 [2023-12-22 16:36:06,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 16:36:06,596 INFO L495 AbstractCegarLoop]: Abstraction has 91773 states and 101157 transitions. [2023-12-22 16:36:06,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 211.0) internal successors, (633), 3 states have internal predecessors, (633), 0 states have call successors, (0), 0 states 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 16:36:06,596 INFO L276 IsEmpty]: Start isEmpty. Operand 91773 states and 101157 transitions. [2023-12-22 16:36:06,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1427 [2023-12-22 16:36:06,782 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 16:36:06,783 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:36:06,808 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 16:36:06,983 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 16:36:06,984 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 16:36:06,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 16:36:06,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1494489099, now seen corresponding path program 1 times [2023-12-22 16:36:06,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 16:36:06,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1113702555] [2023-12-22 16:36:06,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 16:36:06,989 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 16:36:06,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 16:36:06,992 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 16:36:06,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-12-22 16:36:07,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 16:36:07,411 INFO L262 TraceCheckSpWp]: Trace formula consists of 1508 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-22 16:36:07,419 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 16:36:09,405 INFO L134 CoverageAnalysis]: Checked inductivity of 1864 backedges. 0 proven. 1567 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2023-12-22 16:36:09,406 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 16:36:28,896 INFO L134 CoverageAnalysis]: Checked inductivity of 1864 backedges. 1267 proven. 22 refuted. 0 times theorem prover too weak. 575 trivial. 0 not checked. [2023-12-22 16:36:28,896 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 16:36:28,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1113702555] [2023-12-22 16:36:28,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1113702555] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 16:36:28,896 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 16:36:28,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 10 [2023-12-22 16:36:28,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949689458] [2023-12-22 16:36:28,897 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 16:36:28,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-22 16:36:28,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 16:36:28,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-22 16:36:28,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-12-22 16:36:28,900 INFO L87 Difference]: Start difference. First operand 91773 states and 101157 transitions. Second operand has 10 states, 10 states have (on average 212.0) internal successors, (2120), 10 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-22 16:36:51,921 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-22 16:36:51,921 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-22 16:36:52,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-22 16:36:52,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2852 GetRequests, 2843 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-12-22 16:36:52,286 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 3169 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 13184 mSolverCounterSat, 281 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3169 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 13465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 281 IncrementalHoareTripleChecker+Valid, 13184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.1s IncrementalHoareTripleChecker+Time [2023-12-22 16:36:52,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3169 Valid, 105 Invalid, 13465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [281 Valid, 13184 Invalid, 0 Unknown, 0 Unchecked, 23.1s Time] [2023-12-22 16:36:52,287 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-22 16:36:52,295 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2023-12-22 16:36:52,487 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 16:36:52,489 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (91773states) and FLOYD_HOARE automaton (currently 9 states, 10 states before enhancement),while ReachableStatesComputation was computing reachable states (16538 states constructed, input type IntersectNwa). [2023-12-22 16:36:52,495 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 16:36:52,497 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-22 16:36:52,499 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 04:36:52 BoogieIcfgContainer [2023-12-22 16:36:52,499 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-22 16:36:52,499 INFO L158 Benchmark]: Toolchain (without parser) took 865274.51ms. Allocated memory was 229.6MB in the beginning and 965.7MB in the end (delta: 736.1MB). Free memory was 170.9MB in the beginning and 459.5MB in the end (delta: -288.7MB). Peak memory consumption was 515.3MB. Max. memory is 8.0GB. [2023-12-22 16:36:52,499 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 229.6MB. Free memory was 181.5MB in the beginning and 181.4MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-22 16:36:52,500 INFO L158 Benchmark]: CACSL2BoogieTranslator took 975.53ms. Allocated memory was 229.6MB in the beginning and 275.8MB in the end (delta: 46.1MB). Free memory was 170.6MB in the beginning and 137.5MB in the end (delta: 33.1MB). Peak memory consumption was 79.9MB. Max. memory is 8.0GB. [2023-12-22 16:36:52,500 INFO L158 Benchmark]: Boogie Procedure Inliner took 217.99ms. Allocated memory is still 275.8MB. Free memory was 137.5MB in the beginning and 220.5MB in the end (delta: -83.0MB). Peak memory consumption was 31.3MB. Max. memory is 8.0GB. [2023-12-22 16:36:52,500 INFO L158 Benchmark]: Boogie Preprocessor took 226.29ms. Allocated memory is still 275.8MB. Free memory was 220.5MB in the beginning and 215.8MB in the end (delta: 4.7MB). Peak memory consumption was 48.2MB. Max. memory is 8.0GB. [2023-12-22 16:36:52,500 INFO L158 Benchmark]: RCFGBuilder took 12416.39ms. Allocated memory was 275.8MB in the beginning and 464.5MB in the end (delta: 188.7MB). Free memory was 215.8MB in the beginning and 332.2MB in the end (delta: -116.4MB). Peak memory consumption was 208.2MB. Max. memory is 8.0GB. [2023-12-22 16:36:52,500 INFO L158 Benchmark]: TraceAbstraction took 851431.89ms. Allocated memory was 464.5MB in the beginning and 965.7MB in the end (delta: 501.2MB). Free memory was 331.7MB in the beginning and 459.5MB in the end (delta: -127.9MB). Peak memory consumption was 440.8MB. Max. memory is 8.0GB. [2023-12-22 16:36:52,501 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 229.6MB. Free memory was 181.5MB in the beginning and 181.4MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 975.53ms. Allocated memory was 229.6MB in the beginning and 275.8MB in the end (delta: 46.1MB). Free memory was 170.6MB in the beginning and 137.5MB in the end (delta: 33.1MB). Peak memory consumption was 79.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 217.99ms. Allocated memory is still 275.8MB. Free memory was 137.5MB in the beginning and 220.5MB in the end (delta: -83.0MB). Peak memory consumption was 31.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 226.29ms. Allocated memory is still 275.8MB. Free memory was 220.5MB in the beginning and 215.8MB in the end (delta: 4.7MB). Peak memory consumption was 48.2MB. Max. memory is 8.0GB. * RCFGBuilder took 12416.39ms. Allocated memory was 275.8MB in the beginning and 464.5MB in the end (delta: 188.7MB). Free memory was 215.8MB in the beginning and 332.2MB in the end (delta: -116.4MB). Peak memory consumption was 208.2MB. Max. memory is 8.0GB. * TraceAbstraction took 851431.89ms. Allocated memory was 464.5MB in the beginning and 965.7MB in the end (delta: 501.2MB). Free memory was 331.7MB in the beginning and 459.5MB in the end (delta: -127.9MB). Peak memory consumption was 440.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 91]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 91). Cancelled while NwaCegarLoop was constructing difference of abstraction (91773states) and FLOYD_HOARE automaton (currently 9 states, 10 states before enhancement),while ReachableStatesComputation was computing reachable states (16538 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 695 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 851.4s, OverallIterations: 18, TraceHistogramMax: 7, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.5s, AutomataDifference: 790.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 20782 SdHoareTripleChecker+Valid, 782.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 20782 mSDsluCounter, 12751 SdHoareTripleChecker+Invalid, 697.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 280 mSDsCounter, 12598 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 69467 IncrementalHoareTripleChecker+Invalid, 82066 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12598 mSolverCounterUnsat, 12471 mSDtfsCounter, 69467 mSolverCounterSat, 0.6s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 21502 GetRequests, 21457 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=91773occurred in iteration=17, InterpolantAutomatonStates: 62, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 6.6s AutomataMinimizationTime, 17 MinimizatonAttempts, 24150 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.7s SsaConstructionTime, 2.7s SatisfiabilityAnalysisTime, 45.2s InterpolantComputationTime, 14689 NumberOfCodeBlocks, 14689 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 21496 ConstructedInterpolants, 0 QuantifiedInterpolants, 59637 SizeOfPredicates, 1 NumberOfNonLiveVariables, 15781 ConjunctsInSsa, 56 ConjunctsInUnsatCore, 24 InterpolantComputations, 15 PerfectInterpolantSequences, 16394/21004 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown