/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_label24.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-22 16:22:09,055 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-22 16:22:09,141 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 16:22:09,145 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-22 16:22:09,146 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-22 16:22:09,175 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-22 16:22:09,175 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-22 16:22:09,176 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-22 16:22:09,176 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-22 16:22:09,180 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-22 16:22:09,180 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-22 16:22:09,181 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-22 16:22:09,182 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-22 16:22:09,183 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-22 16:22:09,183 INFO L153 SettingsManager]: * Use SBE=true [2023-12-22 16:22:09,184 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-22 16:22:09,184 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-22 16:22:09,184 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-22 16:22:09,184 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-22 16:22:09,184 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-22 16:22:09,185 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-22 16:22:09,185 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-22 16:22:09,185 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-22 16:22:09,185 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-22 16:22:09,186 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-22 16:22:09,186 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-22 16:22:09,186 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-22 16:22:09,186 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-22 16:22:09,186 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-22 16:22:09,187 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-22 16:22:09,188 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-22 16:22:09,188 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-22 16:22:09,188 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-22 16:22:09,188 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-22 16:22:09,188 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 16:22:09,188 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-22 16:22:09,189 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-22 16:22:09,189 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-22 16:22:09,189 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-22 16:22:09,189 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-22 16:22:09,189 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-22 16:22:09,190 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-22 16:22:09,190 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-22 16:22:09,190 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-22 16:22:09,190 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-22 16:22:09,190 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-22 16:22:09,190 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-22 16:22:09,413 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-22 16:22:09,431 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-22 16:22:09,433 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-22 16:22:09,434 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-22 16:22:09,435 INFO L274 PluginConnector]: CDTParser initialized [2023-12-22 16:22:09,436 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label24.c [2023-12-22 16:22:10,632 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-22 16:22:10,934 INFO L384 CDTParser]: Found 1 translation units. [2023-12-22 16:22:10,935 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label24.c [2023-12-22 16:22:10,956 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/731f46c9d/ca997943a29f47faaea2c7b0732fbcb9/FLAGce5dadc63 [2023-12-22 16:22:10,969 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/731f46c9d/ca997943a29f47faaea2c7b0732fbcb9 [2023-12-22 16:22:10,971 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-22 16:22:10,972 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-22 16:22:10,974 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-22 16:22:10,975 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-22 16:22:10,979 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-22 16:22:10,979 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:22:10" (1/1) ... [2023-12-22 16:22:10,980 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30405547 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:22:10, skipping insertion in model container [2023-12-22 16:22:10,980 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:22:10" (1/1) ... [2023-12-22 16:22:11,061 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-22 16:22:11,286 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_label24.c[5403,5416] [2023-12-22 16:22:11,773 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 16:22:11,781 INFO L202 MainTranslator]: Completed pre-run [2023-12-22 16:22:11,798 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_label24.c[5403,5416] [2023-12-22 16:22:11,991 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 16:22:12,005 INFO L206 MainTranslator]: Completed translation [2023-12-22 16:22:12,006 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:22:12 WrapperNode [2023-12-22 16:22:12,006 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-22 16:22:12,007 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-22 16:22:12,007 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-22 16:22:12,007 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-22 16:22:12,012 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:22:12" (1/1) ... [2023-12-22 16:22:12,055 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:22:12" (1/1) ... [2023-12-22 16:22:12,159 INFO L138 Inliner]: procedures = 16, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 4131 [2023-12-22 16:22:12,159 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-22 16:22:12,159 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-22 16:22:12,160 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-22 16:22:12,160 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-22 16:22:12,167 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:22:12" (1/1) ... [2023-12-22 16:22:12,167 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:22:12" (1/1) ... [2023-12-22 16:22:12,181 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:22:12" (1/1) ... [2023-12-22 16:22:12,226 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 16:22:12,226 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:22:12" (1/1) ... [2023-12-22 16:22:12,226 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:22:12" (1/1) ... [2023-12-22 16:22:12,279 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:22:12" (1/1) ... [2023-12-22 16:22:12,297 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:22:12" (1/1) ... [2023-12-22 16:22:12,314 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:22:12" (1/1) ... [2023-12-22 16:22:12,321 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:22:12" (1/1) ... [2023-12-22 16:22:12,339 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-22 16:22:12,341 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-22 16:22:12,341 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-22 16:22:12,341 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-22 16:22:12,342 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:22:12" (1/1) ... [2023-12-22 16:22:12,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 16:22:12,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-22 16:22:12,400 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 16:22:12,447 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 16:22:12,457 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-22 16:22:12,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-22 16:22:12,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-22 16:22:12,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-22 16:22:12,514 INFO L241 CfgBuilder]: Building ICFG [2023-12-22 16:22:12,515 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-22 16:22:22,794 INFO L282 CfgBuilder]: Performing block encoding [2023-12-22 16:22:22,855 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-22 16:22:22,855 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-22 16:22:22,855 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:22:22 BoogieIcfgContainer [2023-12-22 16:22:22,855 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-22 16:22:22,858 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-22 16:22:22,858 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-22 16:22:22,860 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-22 16:22:22,860 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 04:22:10" (1/3) ... [2023-12-22 16:22:22,861 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@996b264 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:22:22, skipping insertion in model container [2023-12-22 16:22:22,861 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:22:12" (2/3) ... [2023-12-22 16:22:22,861 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@996b264 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:22:22, skipping insertion in model container [2023-12-22 16:22:22,861 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:22:22" (3/3) ... [2023-12-22 16:22:22,862 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label24.c [2023-12-22 16:22:22,873 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-22 16:22:22,873 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-22 16:22:22,936 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-22 16:22:22,942 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;@68f8a2b2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-22 16:22:22,942 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-22 16:22:22,958 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 16:22:22,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-22 16:22:22,966 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 16:22:22,967 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 16:22:22,967 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 16:22:22,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 16:22:22,973 INFO L85 PathProgramCache]: Analyzing trace with hash 754402265, now seen corresponding path program 1 times [2023-12-22 16:22:22,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 16:22:22,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [195872977] [2023-12-22 16:22:22,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 16:22:22,992 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 16:22:22,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 16:22:22,994 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 16:22:23,007 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 16:22:23,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 16:22:23,039 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-22 16:22:23,041 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 16:22:23,055 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 16:22:23,055 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 16:22:23,056 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 16:22:23,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [195872977] [2023-12-22 16:22:23,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [195872977] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 16:22:23,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 16:22:23,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 16:22:23,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471428315] [2023-12-22 16:22:23,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 16:22:23,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-22 16:22:23,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 16:22:23,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-22 16:22:23,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-22 16:22:23,077 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 25.0) internal successors, (50), 2 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 16:22:23,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 16:22:23,138 INFO L93 Difference]: Finished difference Result 1389 states and 2763 transitions. [2023-12-22 16:22:23,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-22 16:22:23,150 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-12-22 16:22:23,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 16:22:23,161 INFO L225 Difference]: With dead ends: 1389 [2023-12-22 16:22:23,161 INFO L226 Difference]: Without dead ends: 693 [2023-12-22 16:22:23,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 49 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 16:22:23,171 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 16:22:23,172 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 16:22:23,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2023-12-22 16:22:23,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 693. [2023-12-22 16:22:23,230 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 16:22:23,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1317 transitions. [2023-12-22 16:22:23,232 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1317 transitions. Word has length 50 [2023-12-22 16:22:23,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 16:22:23,232 INFO L495 AbstractCegarLoop]: Abstraction has 693 states and 1317 transitions. [2023-12-22 16:22:23,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 16:22:23,233 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1317 transitions. [2023-12-22 16:22:23,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-22 16:22:23,233 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 16:22:23,234 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 16:22:23,240 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-22 16:22:23,438 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 16:22:23,439 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 16:22:23,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 16:22:23,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1891384966, now seen corresponding path program 1 times [2023-12-22 16:22:23,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 16:22:23,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1156488870] [2023-12-22 16:22:23,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 16:22:23,441 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 16:22:23,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 16:22:23,442 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 16:22:23,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-22 16:22:23,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 16:22:23,471 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 16:22:23,472 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 16:22:23,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 16:22:23,584 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 16:22:23,584 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 16:22:23,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1156488870] [2023-12-22 16:22:23,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1156488870] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 16:22:23,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 16:22:23,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 16:22:23,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888122909] [2023-12-22 16:22:23,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 16:22:23,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 16:22:23,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 16:22:23,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 16:22:23,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 16:22:23,591 INFO L87 Difference]: Start difference. First operand 693 states and 1317 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 16:22:38,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 16:22:38,921 INFO L93 Difference]: Finished difference Result 2075 states and 3948 transitions. [2023-12-22 16:22:38,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 16:22:38,922 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-12-22 16:22:38,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 16:22:38,928 INFO L225 Difference]: With dead ends: 2075 [2023-12-22 16:22:38,928 INFO L226 Difference]: Without dead ends: 1383 [2023-12-22 16:22:38,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 48 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 16:22:38,931 INFO L413 NwaCegarLoop]: 370 mSDtfsCounter, 646 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2216 mSolverCounterSat, 421 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 646 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 2637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 421 IncrementalHoareTripleChecker+Valid, 2216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.2s IncrementalHoareTripleChecker+Time [2023-12-22 16:22:38,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [646 Valid, 376 Invalid, 2637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [421 Valid, 2216 Invalid, 0 Unknown, 0 Unchecked, 15.2s Time] [2023-12-22 16:22:38,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1383 states. [2023-12-22 16:22:38,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1383 to 1383. [2023-12-22 16:22:38,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1383 states, 1382 states have (on average 1.6432706222865412) internal successors, (2271), 1382 states have internal predecessors, (2271), 0 states have call successors, (0), 0 states 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 16:22:38,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1383 states to 1383 states and 2271 transitions. [2023-12-22 16:22:38,953 INFO L78 Accepts]: Start accepts. Automaton has 1383 states and 2271 transitions. Word has length 50 [2023-12-22 16:22:38,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 16:22:38,953 INFO L495 AbstractCegarLoop]: Abstraction has 1383 states and 2271 transitions. [2023-12-22 16:22:38,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 16:22:38,954 INFO L276 IsEmpty]: Start isEmpty. Operand 1383 states and 2271 transitions. [2023-12-22 16:22:38,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-22 16:22:38,956 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 16:22:38,956 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 16:22:38,963 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 16:22:39,158 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 16:22:39,159 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 16:22:39,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 16:22:39,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1960552723, now seen corresponding path program 1 times [2023-12-22 16:22:39,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 16:22:39,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [431905706] [2023-12-22 16:22:39,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 16:22:39,160 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 16:22:39,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 16:22:39,162 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 16:22:39,169 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 16:22:39,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 16:22:39,227 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 16:22:39,231 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 16:22:39,372 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 16:22:39,372 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 16:22:39,373 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 16:22:39,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [431905706] [2023-12-22 16:22:39,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [431905706] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 16:22:39,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 16:22:39,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 16:22:39,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885593624] [2023-12-22 16:22:39,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 16:22:39,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 16:22:39,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 16:22:39,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 16:22:39,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 16:22:39,384 INFO L87 Difference]: Start difference. First operand 1383 states and 2271 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 16:22:56,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 16:22:56,407 INFO L93 Difference]: Finished difference Result 4145 states and 6810 transitions. [2023-12-22 16:22:56,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 16:22:56,408 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2023-12-22 16:22:56,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 16:22:56,415 INFO L225 Difference]: With dead ends: 4145 [2023-12-22 16:22:56,415 INFO L226 Difference]: Without dead ends: 2763 [2023-12-22 16:22:56,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 113 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 16:22:56,419 INFO L413 NwaCegarLoop]: 584 mSDtfsCounter, 667 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1716 mSolverCounterSat, 918 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 667 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 2634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 918 IncrementalHoareTripleChecker+Valid, 1716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.9s IncrementalHoareTripleChecker+Time [2023-12-22 16:22:56,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [667 Valid, 589 Invalid, 2634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [918 Valid, 1716 Invalid, 0 Unknown, 0 Unchecked, 16.9s Time] [2023-12-22 16:22:56,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2763 states. [2023-12-22 16:22:56,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2763 to 2763. [2023-12-22 16:22:56,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2763 states, 2762 states have (on average 1.3787110789283128) internal successors, (3808), 2762 states have internal predecessors, (3808), 0 states have call successors, (0), 0 states 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 16:22:56,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2763 states to 2763 states and 3808 transitions. [2023-12-22 16:22:56,465 INFO L78 Accepts]: Start accepts. Automaton has 2763 states and 3808 transitions. Word has length 115 [2023-12-22 16:22:56,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 16:22:56,466 INFO L495 AbstractCegarLoop]: Abstraction has 2763 states and 3808 transitions. [2023-12-22 16:22:56,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 16:22:56,466 INFO L276 IsEmpty]: Start isEmpty. Operand 2763 states and 3808 transitions. [2023-12-22 16:22:56,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-22 16:22:56,473 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 16:22:56,473 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 16:22:56,483 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-12-22 16:22:56,676 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 16:22:56,677 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 16:22:56,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 16:22:56,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1720090049, now seen corresponding path program 1 times [2023-12-22 16:22:56,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 16:22:56,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1396337110] [2023-12-22 16:22:56,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 16:22:56,678 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 16:22:56,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 16:22:56,679 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 16:22:56,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-22 16:22:56,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 16:22:56,723 INFO L262 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 16:22:56,730 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 16:22:56,825 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 16:22:56,825 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 16:22:56,825 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 16:22:56,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1396337110] [2023-12-22 16:22:56,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1396337110] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 16:22:56,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 16:22:56,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 16:22:56,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903709248] [2023-12-22 16:22:56,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 16:22:56,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 16:22:56,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 16:22:56,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 16:22:56,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 16:22:56,829 INFO L87 Difference]: Start difference. First operand 2763 states and 3808 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 2 states have internal predecessors, (118), 0 states have call successors, (0), 0 states 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 16:23:13,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 16:23:13,336 INFO L93 Difference]: Finished difference Result 8285 states and 11421 transitions. [2023-12-22 16:23:13,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 16:23:13,338 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 2 states have internal predecessors, (118), 0 states have call successors, (0), 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 118 [2023-12-22 16:23:13,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 16:23:13,351 INFO L225 Difference]: With dead ends: 8285 [2023-12-22 16:23:13,351 INFO L226 Difference]: Without dead ends: 5523 [2023-12-22 16:23:13,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 116 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 16:23:13,359 INFO L413 NwaCegarLoop]: 603 mSDtfsCounter, 627 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2232 mSolverCounterSat, 514 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 2746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 514 IncrementalHoareTripleChecker+Valid, 2232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.4s IncrementalHoareTripleChecker+Time [2023-12-22 16:23:13,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [627 Valid, 609 Invalid, 2746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [514 Valid, 2232 Invalid, 0 Unknown, 0 Unchecked, 16.4s Time] [2023-12-22 16:23:13,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5523 states. [2023-12-22 16:23:13,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5523 to 5523. [2023-12-22 16:23:13,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5523 states, 5522 states have (on average 1.2513582035494386) internal successors, (6910), 5522 states have internal predecessors, (6910), 0 states have call successors, (0), 0 states 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 16:23:13,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5523 states to 5523 states and 6910 transitions. [2023-12-22 16:23:13,447 INFO L78 Accepts]: Start accepts. Automaton has 5523 states and 6910 transitions. Word has length 118 [2023-12-22 16:23:13,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 16:23:13,447 INFO L495 AbstractCegarLoop]: Abstraction has 5523 states and 6910 transitions. [2023-12-22 16:23:13,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 2 states have internal predecessors, (118), 0 states have call successors, (0), 0 states 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 16:23:13,447 INFO L276 IsEmpty]: Start isEmpty. Operand 5523 states and 6910 transitions. [2023-12-22 16:23:13,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-22 16:23:13,449 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 16:23:13,452 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:23:13,466 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 16:23:13,655 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 16:23:13,655 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 16:23:13,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 16:23:13,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1349677714, now seen corresponding path program 1 times [2023-12-22 16:23:13,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 16:23:13,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [3366248] [2023-12-22 16:23:13,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 16:23:13,657 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 16:23:13,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 16:23:13,658 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 16:23:13,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-22 16:23:13,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 16:23:13,717 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 16:23:13,721 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 16:23:13,882 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 16:23:13,883 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 16:23:13,883 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 16:23:13,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [3366248] [2023-12-22 16:23:13,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [3366248] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 16:23:13,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 16:23:13,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 16:23:13,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912520227] [2023-12-22 16:23:13,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 16:23:13,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 16:23:13,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 16:23:13,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 16:23:13,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 16:23:13,885 INFO L87 Difference]: Start difference. First operand 5523 states and 6910 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 2 states have internal predecessors, (136), 0 states have call successors, (0), 0 states 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 16:23:27,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 16:23:27,099 INFO L93 Difference]: Finished difference Result 13115 states and 16082 transitions. [2023-12-22 16:23:27,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 16:23:27,100 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 2 states have internal predecessors, (136), 0 states have call successors, (0), 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 136 [2023-12-22 16:23:27,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 16:23:27,117 INFO L225 Difference]: With dead ends: 13115 [2023-12-22 16:23:27,117 INFO L226 Difference]: Without dead ends: 7593 [2023-12-22 16:23:27,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 134 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 16:23:27,123 INFO L413 NwaCegarLoop]: 621 mSDtfsCounter, 623 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2033 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 623 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 2111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2033 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.1s IncrementalHoareTripleChecker+Time [2023-12-22 16:23:27,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [623 Valid, 627 Invalid, 2111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 2033 Invalid, 0 Unknown, 0 Unchecked, 13.1s Time] [2023-12-22 16:23:27,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7593 states. [2023-12-22 16:23:27,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7593 to 7593. [2023-12-22 16:23:27,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7593 states, 7592 states have (on average 1.19072708113804) internal successors, (9040), 7592 states have internal predecessors, (9040), 0 states have call successors, (0), 0 states 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 16:23:27,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7593 states to 7593 states and 9040 transitions. [2023-12-22 16:23:27,219 INFO L78 Accepts]: Start accepts. Automaton has 7593 states and 9040 transitions. Word has length 136 [2023-12-22 16:23:27,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 16:23:27,220 INFO L495 AbstractCegarLoop]: Abstraction has 7593 states and 9040 transitions. [2023-12-22 16:23:27,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 2 states have internal predecessors, (136), 0 states have call successors, (0), 0 states 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 16:23:27,220 INFO L276 IsEmpty]: Start isEmpty. Operand 7593 states and 9040 transitions. [2023-12-22 16:23:27,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-22 16:23:27,223 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 16:23:27,225 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:23:27,230 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 16:23:27,427 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 16:23:27,428 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 16:23:27,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 16:23:27,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1944664051, now seen corresponding path program 1 times [2023-12-22 16:23:27,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 16:23:27,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [595941424] [2023-12-22 16:23:27,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 16:23:27,430 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 16:23:27,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 16:23:27,431 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 16:23:27,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-22 16:23:27,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 16:23:27,498 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 16:23:27,500 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 16:23:27,869 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 16:23:27,869 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 16:23:27,869 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 16:23:27,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [595941424] [2023-12-22 16:23:27,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [595941424] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 16:23:27,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 16:23:27,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 16:23:27,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521615594] [2023-12-22 16:23:27,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 16:23:27,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 16:23:27,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 16:23:27,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 16:23:27,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 16:23:27,870 INFO L87 Difference]: Start difference. First operand 7593 states and 9040 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states 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 16:23:41,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 16:23:41,145 INFO L93 Difference]: Finished difference Result 13115 states and 15949 transitions. [2023-12-22 16:23:41,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 16:23:41,150 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2023-12-22 16:23:41,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 16:23:41,166 INFO L225 Difference]: With dead ends: 13115 [2023-12-22 16:23:41,167 INFO L226 Difference]: Without dead ends: 7593 [2023-12-22 16:23:41,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 141 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 16:23:41,173 INFO L413 NwaCegarLoop]: 628 mSDtfsCounter, 599 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2126 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 599 SdHoareTripleChecker+Valid, 634 SdHoareTripleChecker+Invalid, 2144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 2126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.2s IncrementalHoareTripleChecker+Time [2023-12-22 16:23:41,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [599 Valid, 634 Invalid, 2144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 2126 Invalid, 0 Unknown, 0 Unchecked, 13.2s Time] [2023-12-22 16:23:41,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7593 states. [2023-12-22 16:23:41,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7593 to 7593. [2023-12-22 16:23:41,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7593 states, 7592 states have (on average 1.1875658587987354) internal successors, (9016), 7592 states have internal predecessors, (9016), 0 states have call successors, (0), 0 states 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 16:23:41,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7593 states to 7593 states and 9016 transitions. [2023-12-22 16:23:41,290 INFO L78 Accepts]: Start accepts. Automaton has 7593 states and 9016 transitions. Word has length 143 [2023-12-22 16:23:41,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 16:23:41,290 INFO L495 AbstractCegarLoop]: Abstraction has 7593 states and 9016 transitions. [2023-12-22 16:23:41,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states 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 16:23:41,291 INFO L276 IsEmpty]: Start isEmpty. Operand 7593 states and 9016 transitions. [2023-12-22 16:23:41,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2023-12-22 16:23:41,296 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 16:23:41,296 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, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:23:41,300 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-22 16:23:41,499 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 16:23:41,500 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 16:23:41,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 16:23:41,500 INFO L85 PathProgramCache]: Analyzing trace with hash -642068709, now seen corresponding path program 1 times [2023-12-22 16:23:41,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 16:23:41,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [505037889] [2023-12-22 16:23:41,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 16:23:41,502 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 16:23:41,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 16:23:41,503 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 16:23:41,503 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 16:23:41,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 16:23:41,597 INFO L262 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-22 16:23:41,600 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 16:23:42,233 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 50 proven. 139 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 16:23:42,234 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 16:23:42,734 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 50 proven. 139 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 16:23:42,734 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 16:23:42,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [505037889] [2023-12-22 16:23:42,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [505037889] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 16:23:42,734 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 16:23:42,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-12-22 16:23:42,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769028805] [2023-12-22 16:23:42,734 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 16:23:42,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-22 16:23:42,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 16:23:42,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-22 16:23:42,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-12-22 16:23:42,736 INFO L87 Difference]: Start difference. First operand 7593 states and 9016 transitions. Second operand has 7 states, 7 states have (on average 79.71428571428571) internal successors, (558), 6 states have internal predecessors, (558), 0 states have call successors, (0), 0 states 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 16:24:26,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 16:24:26,044 INFO L93 Difference]: Finished difference Result 20121 states and 24970 transitions. [2023-12-22 16:24:26,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-22 16:24:26,046 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 79.71428571428571) internal successors, (558), 6 states have internal predecessors, (558), 0 states have call successors, (0), 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 325 [2023-12-22 16:24:26,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 16:24:26,074 INFO L225 Difference]: With dead ends: 20121 [2023-12-22 16:24:26,074 INFO L226 Difference]: Without dead ends: 11733 [2023-12-22 16:24:26,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 651 GetRequests, 643 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2023-12-22 16:24:26,080 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 7086 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 7407 mSolverCounterSat, 1812 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7086 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 9219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1812 IncrementalHoareTripleChecker+Valid, 7407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.9s IncrementalHoareTripleChecker+Time [2023-12-22 16:24:26,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7086 Valid, 152 Invalid, 9219 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1812 Valid, 7407 Invalid, 0 Unknown, 0 Unchecked, 42.9s Time] [2023-12-22 16:24:26,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11733 states. [2023-12-22 16:24:26,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11733 to 11733. [2023-12-22 16:24:26,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11733 states, 11732 states have (on average 1.0686157517899761) internal successors, (12537), 11732 states have internal predecessors, (12537), 0 states have call successors, (0), 0 states 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 16:24:26,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11733 states to 11733 states and 12537 transitions. [2023-12-22 16:24:26,190 INFO L78 Accepts]: Start accepts. Automaton has 11733 states and 12537 transitions. Word has length 325 [2023-12-22 16:24:26,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 16:24:26,191 INFO L495 AbstractCegarLoop]: Abstraction has 11733 states and 12537 transitions. [2023-12-22 16:24:26,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 79.71428571428571) internal successors, (558), 6 states have internal predecessors, (558), 0 states have call successors, (0), 0 states 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 16:24:26,191 INFO L276 IsEmpty]: Start isEmpty. Operand 11733 states and 12537 transitions. [2023-12-22 16:24:26,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 774 [2023-12-22 16:24:26,200 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 16:24:26,201 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, 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, 2, 2, 2, 2, 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] [2023-12-22 16:24:26,205 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-22 16:24:26,405 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 16:24:26,405 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 16:24:26,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 16:24:26,406 INFO L85 PathProgramCache]: Analyzing trace with hash 59906905, now seen corresponding path program 1 times [2023-12-22 16:24:26,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 16:24:26,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1349733882] [2023-12-22 16:24:26,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 16:24:26,409 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 16:24:26,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 16:24:26,412 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 16:24:26,456 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 16:24:26,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 16:24:26,704 INFO L262 TraceCheckSpWp]: Trace formula consists of 833 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 16:24:26,710 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 16:24:28,470 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 276 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2023-12-22 16:24:28,470 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 16:24:28,470 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 16:24:28,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1349733882] [2023-12-22 16:24:28,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1349733882] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 16:24:28,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 16:24:28,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 16:24:28,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887929395] [2023-12-22 16:24:28,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 16:24:28,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 16:24:28,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 16:24:28,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 16:24:28,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 16:24:28,472 INFO L87 Difference]: Start difference. First operand 11733 states and 12537 transitions. Second operand has 3 states, 3 states have (on average 203.0) internal successors, (609), 2 states have internal predecessors, (609), 0 states have call successors, (0), 0 states 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 16:24:36,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 16:24:36,236 INFO L93 Difference]: Finished difference Result 22085 states and 23688 transitions. [2023-12-22 16:24:36,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 16:24:36,239 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 203.0) internal successors, (609), 2 states have internal predecessors, (609), 0 states have call successors, (0), 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 773 [2023-12-22 16:24:36,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 16:24:36,253 INFO L225 Difference]: With dead ends: 22085 [2023-12-22 16:24:36,253 INFO L226 Difference]: Without dead ends: 11733 [2023-12-22 16:24:36,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 772 GetRequests, 771 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 16:24:36,262 INFO L413 NwaCegarLoop]: 370 mSDtfsCounter, 176 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1741 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 1741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2023-12-22 16:24:36,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 376 Invalid, 1741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1741 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2023-12-22 16:24:36,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11733 states. [2023-12-22 16:24:36,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11733 to 11733. [2023-12-22 16:24:36,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11733 states, 11732 states have (on average 1.0685305148312307) internal successors, (12536), 11732 states have internal predecessors, (12536), 0 states have call successors, (0), 0 states 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 16:24:36,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11733 states to 11733 states and 12536 transitions. [2023-12-22 16:24:36,399 INFO L78 Accepts]: Start accepts. Automaton has 11733 states and 12536 transitions. Word has length 773 [2023-12-22 16:24:36,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 16:24:36,400 INFO L495 AbstractCegarLoop]: Abstraction has 11733 states and 12536 transitions. [2023-12-22 16:24:36,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 203.0) internal successors, (609), 2 states have internal predecessors, (609), 0 states have call successors, (0), 0 states 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 16:24:36,400 INFO L276 IsEmpty]: Start isEmpty. Operand 11733 states and 12536 transitions. [2023-12-22 16:24:36,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 951 [2023-12-22 16:24:36,417 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 16:24:36,418 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 16:24:36,430 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 16:24:36,623 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 16:24:36,624 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 16:24:36,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 16:24:36,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1201396502, now seen corresponding path program 1 times [2023-12-22 16:24:36,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 16:24:36,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1570167312] [2023-12-22 16:24:36,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 16:24:36,628 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 16:24:36,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 16:24:36,629 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 16:24:36,630 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 16:24:36,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 16:24:36,921 INFO L262 TraceCheckSpWp]: Trace formula consists of 1012 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 16:24:36,939 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 16:24:37,927 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 146 proven. 172 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2023-12-22 16:24:37,927 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 16:24:38,273 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 318 proven. 0 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2023-12-22 16:24:38,274 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 16:24:38,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1570167312] [2023-12-22 16:24:38,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1570167312] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-22 16:24:38,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-22 16:24:38,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-22 16:24:38,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276151024] [2023-12-22 16:24:38,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 16:24:38,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 16:24:38,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 16:24:38,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 16:24:38,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-22 16:24:38,276 INFO L87 Difference]: Start difference. First operand 11733 states and 12536 transitions. Second operand has 3 states, 3 states have (on average 218.0) internal successors, (654), 3 states have internal predecessors, (654), 0 states have call successors, (0), 0 states 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 16:25:06,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 16:25:06,443 INFO L93 Difference]: Finished difference Result 26225 states and 28439 transitions. [2023-12-22 16:25:06,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 16:25:06,458 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 218.0) internal successors, (654), 3 states have internal predecessors, (654), 0 states have call successors, (0), 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 950 [2023-12-22 16:25:06,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 16:25:06,499 INFO L225 Difference]: With dead ends: 26225 [2023-12-22 16:25:06,499 INFO L226 Difference]: Without dead ends: 15873 [2023-12-22 16:25:06,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1898 GetRequests, 1895 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 16:25:06,505 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 630 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1800 mSolverCounterSat, 361 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 630 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 2161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 361 IncrementalHoareTripleChecker+Valid, 1800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.0s IncrementalHoareTripleChecker+Time [2023-12-22 16:25:06,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [630 Valid, 210 Invalid, 2161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [361 Valid, 1800 Invalid, 0 Unknown, 0 Unchecked, 28.0s Time] [2023-12-22 16:25:06,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15873 states. [2023-12-22 16:25:06,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15873 to 15873. [2023-12-22 16:25:06,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15873 states, 15872 states have (on average 1.0679183467741935) internal successors, (16950), 15872 states have internal predecessors, (16950), 0 states have call successors, (0), 0 states 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 16:25:06,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15873 states to 15873 states and 16950 transitions. [2023-12-22 16:25:06,627 INFO L78 Accepts]: Start accepts. Automaton has 15873 states and 16950 transitions. Word has length 950 [2023-12-22 16:25:06,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 16:25:06,628 INFO L495 AbstractCegarLoop]: Abstraction has 15873 states and 16950 transitions. [2023-12-22 16:25:06,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 218.0) internal successors, (654), 3 states have internal predecessors, (654), 0 states have call successors, (0), 0 states 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 16:25:06,628 INFO L276 IsEmpty]: Start isEmpty. Operand 15873 states and 16950 transitions. [2023-12-22 16:25:06,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 958 [2023-12-22 16:25:06,635 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 16:25:06,635 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 16:25:06,642 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-22 16:25:06,842 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 16:25:06,843 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 16:25:06,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 16:25:06,843 INFO L85 PathProgramCache]: Analyzing trace with hash 912244043, now seen corresponding path program 1 times [2023-12-22 16:25:06,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 16:25:06,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [184507803] [2023-12-22 16:25:06,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 16:25:06,847 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 16:25:06,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 16:25:06,848 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 16:25:06,848 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 16:25:07,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 16:25:07,107 INFO L262 TraceCheckSpWp]: Trace formula consists of 1016 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 16:25:07,113 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 16:25:09,478 INFO L134 CoverageAnalysis]: Checked inductivity of 629 backedges. 146 proven. 186 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2023-12-22 16:25:09,479 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 16:25:10,840 INFO L134 CoverageAnalysis]: Checked inductivity of 629 backedges. 332 proven. 0 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2023-12-22 16:25:10,840 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 16:25:10,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [184507803] [2023-12-22 16:25:10,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [184507803] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-22 16:25:10,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-22 16:25:10,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-22 16:25:10,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805717484] [2023-12-22 16:25:10,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 16:25:10,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 16:25:10,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 16:25:10,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 16:25:10,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-22 16:25:10,858 INFO L87 Difference]: Start difference. First operand 15873 states and 16950 transitions. Second operand has 3 states, 3 states have (on average 220.33333333333334) internal successors, (661), 3 states have internal predecessors, (661), 0 states have call successors, (0), 0 states 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 16:25:36,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 16:25:36,925 INFO L93 Difference]: Finished difference Result 35195 states and 37924 transitions. [2023-12-22 16:25:36,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 16:25:36,927 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 220.33333333333334) internal successors, (661), 3 states have internal predecessors, (661), 0 states have call successors, (0), 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 957 [2023-12-22 16:25:36,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 16:25:36,945 INFO L225 Difference]: With dead ends: 35195 [2023-12-22 16:25:36,945 INFO L226 Difference]: Without dead ends: 20703 [2023-12-22 16:25:36,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1912 GetRequests, 1909 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 16:25:36,952 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 615 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1728 mSolverCounterSat, 596 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 615 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 2324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 596 IncrementalHoareTripleChecker+Valid, 1728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.9s IncrementalHoareTripleChecker+Time [2023-12-22 16:25:36,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [615 Valid, 126 Invalid, 2324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [596 Valid, 1728 Invalid, 0 Unknown, 0 Unchecked, 25.9s Time] [2023-12-22 16:25:36,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20703 states. [2023-12-22 16:25:37,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20703 to 18633. [2023-12-22 16:25:37,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18633 states, 18632 states have (on average 1.081097037355088) internal successors, (20143), 18632 states have internal predecessors, (20143), 0 states have call successors, (0), 0 states 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 16:25:37,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18633 states to 18633 states and 20143 transitions. [2023-12-22 16:25:37,099 INFO L78 Accepts]: Start accepts. Automaton has 18633 states and 20143 transitions. Word has length 957 [2023-12-22 16:25:37,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 16:25:37,100 INFO L495 AbstractCegarLoop]: Abstraction has 18633 states and 20143 transitions. [2023-12-22 16:25:37,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 220.33333333333334) internal successors, (661), 3 states have internal predecessors, (661), 0 states have call successors, (0), 0 states 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 16:25:37,100 INFO L276 IsEmpty]: Start isEmpty. Operand 18633 states and 20143 transitions. [2023-12-22 16:25:37,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1023 [2023-12-22 16:25:37,107 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 16:25:37,109 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, 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, 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, 1] [2023-12-22 16:25:37,116 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2023-12-22 16:25:37,314 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 16:25:37,314 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 16:25:37,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 16:25:37,315 INFO L85 PathProgramCache]: Analyzing trace with hash -396164197, now seen corresponding path program 1 times [2023-12-22 16:25:37,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 16:25:37,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1731310511] [2023-12-22 16:25:37,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 16:25:37,319 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 16:25:37,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 16:25:37,320 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 16:25:37,337 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 16:25:37,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 16:25:37,604 INFO L262 TraceCheckSpWp]: Trace formula consists of 1094 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 16:25:37,612 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 16:25:37,708 INFO L134 CoverageAnalysis]: Checked inductivity of 879 backedges. 533 proven. 0 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2023-12-22 16:25:37,708 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 16:25:37,709 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 16:25:37,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1731310511] [2023-12-22 16:25:37,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1731310511] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 16:25:37,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 16:25:37,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 16:25:37,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13041257] [2023-12-22 16:25:37,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 16:25:37,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 16:25:37,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 16:25:37,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 16:25:37,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 16:25:37,711 INFO L87 Difference]: Start difference. First operand 18633 states and 20143 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 16:25:53,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 16:25:53,049 INFO L93 Difference]: Finished difference Result 47615 states and 51491 transitions. [2023-12-22 16:25:53,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 16:25:53,090 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 1022 [2023-12-22 16:25:53,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 16:25:53,157 INFO L225 Difference]: With dead ends: 47615 [2023-12-22 16:25:53,157 INFO L226 Difference]: Without dead ends: 28983 [2023-12-22 16:25:53,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1021 GetRequests, 1020 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 16:25:53,176 INFO L413 NwaCegarLoop]: 1020 mSDtfsCounter, 622 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1930 mSolverCounterSat, 272 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 1026 SdHoareTripleChecker+Invalid, 2202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 272 IncrementalHoareTripleChecker+Valid, 1930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.1s IncrementalHoareTripleChecker+Time [2023-12-22 16:25:53,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [622 Valid, 1026 Invalid, 2202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [272 Valid, 1930 Invalid, 0 Unknown, 0 Unchecked, 15.1s Time] [2023-12-22 16:25:53,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28983 states. [2023-12-22 16:25:53,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28983 to 28983. [2023-12-22 16:25:53,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28983 states, 28982 states have (on average 1.0584155682837624) internal successors, (30675), 28982 states have internal predecessors, (30675), 0 states have call successors, (0), 0 states 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 16:25:53,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28983 states to 28983 states and 30675 transitions. [2023-12-22 16:25:53,513 INFO L78 Accepts]: Start accepts. Automaton has 28983 states and 30675 transitions. Word has length 1022 [2023-12-22 16:25:53,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 16:25:53,514 INFO L495 AbstractCegarLoop]: Abstraction has 28983 states and 30675 transitions. [2023-12-22 16:25:53,514 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 16:25:53,514 INFO L276 IsEmpty]: Start isEmpty. Operand 28983 states and 30675 transitions. [2023-12-22 16:25:53,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1090 [2023-12-22 16:25:53,523 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 16:25:53,524 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 16:25:53,538 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 16:25:53,729 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 16:25:53,729 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 16:25:53,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 16:25:53,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1541458682, now seen corresponding path program 1 times [2023-12-22 16:25:53,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 16:25:53,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1488107004] [2023-12-22 16:25:53,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 16:25:53,818 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 16:25:53,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 16:25:53,819 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 16:25:53,840 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 16:25:54,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 16:25:54,106 INFO L262 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 16:25:54,112 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 16:25:54,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1027 backedges. 452 proven. 0 refuted. 0 times theorem prover too weak. 575 trivial. 0 not checked. [2023-12-22 16:25:54,221 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 16:25:54,221 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 16:25:54,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1488107004] [2023-12-22 16:25:54,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1488107004] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 16:25:54,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 16:25:54,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 16:25:54,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035403954] [2023-12-22 16:25:54,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 16:25:54,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 16:25:54,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 16:25:54,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 16:25:54,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 16:25:54,223 INFO L87 Difference]: Start difference. First operand 28983 states and 30675 transitions. Second operand has 3 states, 3 states have (on average 218.0) internal successors, (654), 3 states have internal predecessors, (654), 0 states have call successors, (0), 0 states 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 16:26:07,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 16:26:07,791 INFO L93 Difference]: Finished difference Result 66935 states and 71062 transitions. [2023-12-22 16:26:07,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 16:26:07,793 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 218.0) internal successors, (654), 3 states have internal predecessors, (654), 0 states have call successors, (0), 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 1089 [2023-12-22 16:26:07,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 16:26:07,836 INFO L225 Difference]: With dead ends: 66935 [2023-12-22 16:26:07,836 INFO L226 Difference]: Without dead ends: 37953 [2023-12-22 16:26:07,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1088 GetRequests, 1087 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 16:26:07,859 INFO L413 NwaCegarLoop]: 1026 mSDtfsCounter, 605 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1907 mSolverCounterSat, 282 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 605 SdHoareTripleChecker+Valid, 1032 SdHoareTripleChecker+Invalid, 2189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 282 IncrementalHoareTripleChecker+Valid, 1907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2023-12-22 16:26:07,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [605 Valid, 1032 Invalid, 2189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [282 Valid, 1907 Invalid, 0 Unknown, 0 Unchecked, 13.3s Time] [2023-12-22 16:26:07,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37953 states. [2023-12-22 16:26:08,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37953 to 37263. [2023-12-22 16:26:08,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37263 states, 37262 states have (on average 1.0541570500778272) internal successors, (39280), 37262 states have internal predecessors, (39280), 0 states have call successors, (0), 0 states 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 16:26:08,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37263 states to 37263 states and 39280 transitions. [2023-12-22 16:26:08,212 INFO L78 Accepts]: Start accepts. Automaton has 37263 states and 39280 transitions. Word has length 1089 [2023-12-22 16:26:08,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 16:26:08,213 INFO L495 AbstractCegarLoop]: Abstraction has 37263 states and 39280 transitions. [2023-12-22 16:26:08,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 218.0) internal successors, (654), 3 states have internal predecessors, (654), 0 states have call successors, (0), 0 states 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 16:26:08,213 INFO L276 IsEmpty]: Start isEmpty. Operand 37263 states and 39280 transitions. [2023-12-22 16:26:08,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1111 [2023-12-22 16:26:08,221 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 16:26:08,222 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, 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, 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 16:26:08,242 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 16:26:08,430 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 16:26:08,430 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 16:26:08,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 16:26:08,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1297562078, now seen corresponding path program 1 times [2023-12-22 16:26:08,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 16:26:08,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1957258734] [2023-12-22 16:26:08,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 16:26:08,436 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 16:26:08,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 16:26:08,437 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 16:26:08,464 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 16:26:08,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 16:26:08,770 INFO L262 TraceCheckSpWp]: Trace formula consists of 1180 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-22 16:26:08,785 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 16:26:10,118 INFO L134 CoverageAnalysis]: Checked inductivity of 1090 backedges. 0 proven. 793 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2023-12-22 16:26:10,118 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 16:26:13,880 INFO L134 CoverageAnalysis]: Checked inductivity of 1090 backedges. 515 proven. 0 refuted. 0 times theorem prover too weak. 575 trivial. 0 not checked. [2023-12-22 16:26:13,880 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 16:26:13,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1957258734] [2023-12-22 16:26:13,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1957258734] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-22 16:26:13,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-22 16:26:13,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2023-12-22 16:26:13,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146014528] [2023-12-22 16:26:13,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 16:26:13,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 16:26:13,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 16:26:13,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 16:26:13,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-12-22 16:26:13,889 INFO L87 Difference]: Start difference. First operand 37263 states and 39280 transitions. Second operand has 4 states, 4 states have (on average 168.75) internal successors, (675), 4 states have internal predecessors, (675), 0 states have call successors, (0), 0 states 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 16:26:37,629 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 16:27:34,905 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 16:27:36,356 WARN L539 Checker$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 16:27:56,795 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 16:27:57,967 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 16:28:00,268 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 16:28:06,600 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 16:28:19,638 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 16:28:30,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 16:28:30,445 INFO L93 Difference]: Finished difference Result 89705 states and 95274 transitions. [2023-12-22 16:28:30,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 16:28:30,445 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 168.75) internal successors, (675), 4 states have internal predecessors, (675), 0 states have call successors, (0), 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 1110 [2023-12-22 16:28:30,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 16:28:30,500 INFO L225 Difference]: With dead ends: 89705 [2023-12-22 16:28:30,500 INFO L226 Difference]: Without dead ends: 52443 [2023-12-22 16:28:30,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2218 GetRequests, 2212 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-12-22 16:28:30,513 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 1287 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 3427 mSolverCounterSat, 731 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 126.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1287 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 4158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 731 IncrementalHoareTripleChecker+Valid, 3427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 136.0s IncrementalHoareTripleChecker+Time [2023-12-22 16:28:30,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1287 Valid, 53 Invalid, 4158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [731 Valid, 3427 Invalid, 0 Unknown, 0 Unchecked, 136.0s Time] [2023-12-22 16:28:30,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52443 states. [2023-12-22 16:28:31,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52443 to 48303. [2023-12-22 16:28:31,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48303 states, 48302 states have (on average 1.063040867872966) internal successors, (51347), 48302 states have internal predecessors, (51347), 0 states have call successors, (0), 0 states 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 16:28:31,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48303 states to 48303 states and 51347 transitions. [2023-12-22 16:28:31,168 INFO L78 Accepts]: Start accepts. Automaton has 48303 states and 51347 transitions. Word has length 1110 [2023-12-22 16:28:31,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 16:28:31,169 INFO L495 AbstractCegarLoop]: Abstraction has 48303 states and 51347 transitions. [2023-12-22 16:28:31,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 168.75) internal successors, (675), 4 states have internal predecessors, (675), 0 states have call successors, (0), 0 states 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 16:28:31,169 INFO L276 IsEmpty]: Start isEmpty. Operand 48303 states and 51347 transitions. [2023-12-22 16:28:31,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1209 [2023-12-22 16:28:31,202 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 16:28:31,203 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, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 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 16:28:31,220 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-12-22 16:28:31,423 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 16:28:31,424 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 16:28:31,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 16:28:31,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1745501156, now seen corresponding path program 1 times [2023-12-22 16:28:31,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 16:28:31,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2033151920] [2023-12-22 16:28:31,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 16:28:31,429 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 16:28:31,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 16:28:31,442 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 16:28:31,464 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 16:28:31,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 16:28:31,919 INFO L262 TraceCheckSpWp]: Trace formula consists of 1288 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 16:28:31,925 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 16:28:32,066 INFO L134 CoverageAnalysis]: Checked inductivity of 1530 backedges. 635 proven. 0 refuted. 0 times theorem prover too weak. 895 trivial. 0 not checked. [2023-12-22 16:28:32,066 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 16:28:32,066 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 16:28:32,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2033151920] [2023-12-22 16:28:32,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2033151920] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 16:28:32,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 16:28:32,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 16:28:32,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933423178] [2023-12-22 16:28:32,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 16:28:32,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 16:28:32,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 16:28:32,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 16:28:32,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 16:28:32,068 INFO L87 Difference]: Start difference. First operand 48303 states and 51347 transitions. Second operand has 3 states, 3 states have (on average 222.33333333333334) internal successors, (667), 3 states have internal predecessors, (667), 0 states have call successors, (0), 0 states 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 16:28:48,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 16:28:48,142 INFO L93 Difference]: Finished difference Result 106265 states and 113268 transitions. [2023-12-22 16:28:48,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 16:28:48,142 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 222.33333333333334) internal successors, (667), 3 states have internal predecessors, (667), 0 states have call successors, (0), 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 1208 [2023-12-22 16:28:48,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 16:28:48,200 INFO L225 Difference]: With dead ends: 106265 [2023-12-22 16:28:48,200 INFO L226 Difference]: Without dead ends: 57963 [2023-12-22 16:28:48,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1207 GetRequests, 1206 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 16:28:48,226 INFO L413 NwaCegarLoop]: 1041 mSDtfsCounter, 594 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1956 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 594 SdHoareTripleChecker+Valid, 1047 SdHoareTripleChecker+Invalid, 2211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 1956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.7s IncrementalHoareTripleChecker+Time [2023-12-22 16:28:48,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [594 Valid, 1047 Invalid, 2211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [255 Valid, 1956 Invalid, 0 Unknown, 0 Unchecked, 15.7s Time] [2023-12-22 16:28:48,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57963 states. [2023-12-22 16:28:48,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57963 to 53823. [2023-12-22 16:28:48,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53823 states, 53822 states have (on average 1.0630597153580321) internal successors, (57216), 53822 states have internal predecessors, (57216), 0 states have call successors, (0), 0 states 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 16:28:48,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53823 states to 53823 states and 57216 transitions. [2023-12-22 16:28:48,925 INFO L78 Accepts]: Start accepts. Automaton has 53823 states and 57216 transitions. Word has length 1208 [2023-12-22 16:28:48,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 16:28:48,926 INFO L495 AbstractCegarLoop]: Abstraction has 53823 states and 57216 transitions. [2023-12-22 16:28:48,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 222.33333333333334) internal successors, (667), 3 states have internal predecessors, (667), 0 states have call successors, (0), 0 states 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 16:28:48,926 INFO L276 IsEmpty]: Start isEmpty. Operand 53823 states and 57216 transitions. [2023-12-22 16:28:49,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1298 [2023-12-22 16:28:49,022 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 16:28:49,022 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, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:28:49,041 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 16:28:49,222 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 16:28:49,223 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 16:28:49,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 16:28:49,223 INFO L85 PathProgramCache]: Analyzing trace with hash 748960230, now seen corresponding path program 1 times [2023-12-22 16:28:49,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 16:28:49,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [182610178] [2023-12-22 16:28:49,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 16:28:49,228 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 16:28:49,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 16:28:49,229 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 16:28:49,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-22 16:28:49,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 16:28:49,592 INFO L262 TraceCheckSpWp]: Trace formula consists of 1377 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 16:28:49,598 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 16:28:49,671 INFO L134 CoverageAnalysis]: Checked inductivity of 1758 backedges. 244 proven. 0 refuted. 0 times theorem prover too weak. 1514 trivial. 0 not checked. [2023-12-22 16:28:49,671 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 16:28:49,671 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 16:28:49,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [182610178] [2023-12-22 16:28:49,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [182610178] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 16:28:49,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 16:28:49,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 16:28:49,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779382533] [2023-12-22 16:28:49,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 16:28:49,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 16:28:49,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 16:28:49,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 16:28:49,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 16:28:49,673 INFO L87 Difference]: Start difference. First operand 53823 states and 57216 transitions. Second operand has 3 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 0 states have call successors, (0), 0 states 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 16:29:02,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 16:29:02,617 INFO L93 Difference]: Finished difference Result 123515 states and 131881 transitions. [2023-12-22 16:29:02,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 16:29:02,620 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 0 states have call successors, (0), 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 1297 [2023-12-22 16:29:02,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 16:29:02,713 INFO L225 Difference]: With dead ends: 123515 [2023-12-22 16:29:02,713 INFO L226 Difference]: Without dead ends: 63483 [2023-12-22 16:29:02,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1296 GetRequests, 1295 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 16:29:02,762 INFO L413 NwaCegarLoop]: 1040 mSDtfsCounter, 651 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1720 mSolverCounterSat, 387 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 651 SdHoareTripleChecker+Valid, 1046 SdHoareTripleChecker+Invalid, 2107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 387 IncrementalHoareTripleChecker+Valid, 1720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.4s IncrementalHoareTripleChecker+Time [2023-12-22 16:29:02,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [651 Valid, 1046 Invalid, 2107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [387 Valid, 1720 Invalid, 0 Unknown, 0 Unchecked, 12.4s Time] [2023-12-22 16:29:02,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63483 states. [2023-12-22 16:29:03,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63483 to 63483. [2023-12-22 16:29:03,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63483 states, 63482 states have (on average 1.049998424750323) internal successors, (66656), 63482 states have internal predecessors, (66656), 0 states have call successors, (0), 0 states 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 16:29:03,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63483 states to 63483 states and 66656 transitions. [2023-12-22 16:29:03,481 INFO L78 Accepts]: Start accepts. Automaton has 63483 states and 66656 transitions. Word has length 1297 [2023-12-22 16:29:03,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 16:29:03,482 INFO L495 AbstractCegarLoop]: Abstraction has 63483 states and 66656 transitions. [2023-12-22 16:29:03,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 0 states have call successors, (0), 0 states 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 16:29:03,482 INFO L276 IsEmpty]: Start isEmpty. Operand 63483 states and 66656 transitions. [2023-12-22 16:29:03,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1424 [2023-12-22 16:29:03,500 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 16:29:03,501 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, 7, 7, 7, 7, 7, 7, 7, 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:29:03,508 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 16:29:03,706 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 16:29:03,707 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 16:29:03,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 16:29:03,707 INFO L85 PathProgramCache]: Analyzing trace with hash -895144184, now seen corresponding path program 1 times [2023-12-22 16:29:03,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 16:29:03,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1418931863] [2023-12-22 16:29:03,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 16:29:03,711 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 16:29:03,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 16:29:03,712 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 16:29:03,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-12-22 16:29:04,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 16:29:04,220 INFO L262 TraceCheckSpWp]: Trace formula consists of 1514 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-22 16:29:04,230 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 16:29:05,702 INFO L134 CoverageAnalysis]: Checked inductivity of 2370 backedges. 1011 proven. 1013 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2023-12-22 16:29:05,702 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 16:29:11,304 INFO L134 CoverageAnalysis]: Checked inductivity of 2370 backedges. 1642 proven. 104 refuted. 0 times theorem prover too weak. 624 trivial. 0 not checked. [2023-12-22 16:29:11,305 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 16:29:11,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1418931863] [2023-12-22 16:29:11,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1418931863] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 16:29:11,305 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 16:29:11,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 8 [2023-12-22 16:29:11,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553991504] [2023-12-22 16:29:11,305 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 16:29:11,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-22 16:29:11,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 16:29:11,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-22 16:29:11,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-12-22 16:29:11,308 INFO L87 Difference]: Start difference. First operand 63483 states and 66656 transitions. Second operand has 8 states, 8 states have (on average 226.0) internal successors, (1808), 8 states have internal predecessors, (1808), 0 states have call successors, (0), 0 states 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 16:30:16,412 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 16:30:29,780 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 16:30:37,320 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 16:31:08,508 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.56s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 16:31:35,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 16:31:35,570 INFO L93 Difference]: Finished difference Result 138695 states and 145459 transitions. [2023-12-22 16:31:35,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-22 16:31:35,581 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 226.0) internal successors, (1808), 8 states have internal predecessors, (1808), 0 states have call successors, (0), 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 1423 [2023-12-22 16:31:35,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 16:31:35,724 INFO L225 Difference]: With dead ends: 138695 [2023-12-22 16:31:35,725 INFO L226 Difference]: Without dead ends: 75213 [2023-12-22 16:31:35,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2846 GetRequests, 2839 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-22 16:31:35,754 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 5065 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 14851 mSolverCounterSat, 962 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 129.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5065 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 15813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 962 IncrementalHoareTripleChecker+Valid, 14851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 143.2s IncrementalHoareTripleChecker+Time [2023-12-22 16:31:35,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5065 Valid, 145 Invalid, 15813 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [962 Valid, 14851 Invalid, 0 Unknown, 0 Unchecked, 143.2s Time] [2023-12-22 16:31:35,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75213 states. [2023-12-22 16:31:36,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75213 to 70383. [2023-12-22 16:31:36,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70383 states, 70382 states have (on average 1.0476968543093406) internal successors, (73739), 70382 states have internal predecessors, (73739), 0 states have call successors, (0), 0 states 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 16:31:36,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70383 states to 70383 states and 73739 transitions. [2023-12-22 16:31:36,577 INFO L78 Accepts]: Start accepts. Automaton has 70383 states and 73739 transitions. Word has length 1423 [2023-12-22 16:31:36,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 16:31:36,578 INFO L495 AbstractCegarLoop]: Abstraction has 70383 states and 73739 transitions. [2023-12-22 16:31:36,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 226.0) internal successors, (1808), 8 states have internal predecessors, (1808), 0 states have call successors, (0), 0 states 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 16:31:36,578 INFO L276 IsEmpty]: Start isEmpty. Operand 70383 states and 73739 transitions. [2023-12-22 16:31:36,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1506 [2023-12-22 16:31:36,597 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 16:31:36,598 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, 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, 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, 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, 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, 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] [2023-12-22 16:31:36,613 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 16:31:36,804 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 16:31:36,804 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 16:31:36,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 16:31:36,805 INFO L85 PathProgramCache]: Analyzing trace with hash 994456988, now seen corresponding path program 1 times [2023-12-22 16:31:36,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 16:31:36,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1425394286] [2023-12-22 16:31:36,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 16:31:36,810 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 16:31:36,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 16:31:36,811 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 16:31:36,813 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 16:31:37,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 16:31:37,463 INFO L262 TraceCheckSpWp]: Trace formula consists of 1581 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 16:31:37,471 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 16:31:37,559 INFO L134 CoverageAnalysis]: Checked inductivity of 2060 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 1862 trivial. 0 not checked. [2023-12-22 16:31:37,559 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 16:31:37,559 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 16:31:37,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1425394286] [2023-12-22 16:31:37,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1425394286] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 16:31:37,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 16:31:37,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 16:31:37,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570139841] [2023-12-22 16:31:37,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 16:31:37,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 16:31:37,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 16:31:37,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 16:31:37,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 16:31:37,561 INFO L87 Difference]: Start difference. First operand 70383 states and 73739 transitions. Second operand has 3 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 0 states have call successors, (0), 0 states 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 16:31:51,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 16:31:51,670 INFO L93 Difference]: Finished difference Result 145595 states and 152616 transitions. [2023-12-22 16:31:51,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 16:31:51,679 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 0 states have call successors, (0), 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 1505 [2023-12-22 16:31:51,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 16:31:51,835 INFO L225 Difference]: With dead ends: 145595 [2023-12-22 16:31:51,835 INFO L226 Difference]: Without dead ends: 77283 [2023-12-22 16:31:51,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1504 GetRequests, 1503 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 16:31:51,863 INFO L413 NwaCegarLoop]: 962 mSDtfsCounter, 642 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1707 mSolverCounterSat, 236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 642 SdHoareTripleChecker+Valid, 968 SdHoareTripleChecker+Invalid, 1943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 1707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2023-12-22 16:31:51,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [642 Valid, 968 Invalid, 1943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [236 Valid, 1707 Invalid, 0 Unknown, 0 Unchecked, 13.5s Time] [2023-12-22 16:31:51,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77283 states. [2023-12-22 16:31:52,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77283 to 76593. [2023-12-22 16:31:52,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76593 states, 76592 states have (on average 1.0419887194485065) internal successors, (79808), 76592 states have internal predecessors, (79808), 0 states have call successors, (0), 0 states 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 16:31:52,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76593 states to 76593 states and 79808 transitions. [2023-12-22 16:31:52,814 INFO L78 Accepts]: Start accepts. Automaton has 76593 states and 79808 transitions. Word has length 1505 [2023-12-22 16:31:52,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 16:31:52,815 INFO L495 AbstractCegarLoop]: Abstraction has 76593 states and 79808 transitions. [2023-12-22 16:31:52,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 0 states have call successors, (0), 0 states 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 16:31:52,815 INFO L276 IsEmpty]: Start isEmpty. Operand 76593 states and 79808 transitions. [2023-12-22 16:31:52,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1583 [2023-12-22 16:31:52,839 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 16:31:52,840 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, 7, 7, 7, 7, 7, 7, 7, 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, 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, 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, 3, 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 16:31:52,849 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 (18)] Ended with exit code 0 [2023-12-22 16:31:53,049 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 16:31:53,050 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 16:31:53,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 16:31:53,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1626815070, now seen corresponding path program 1 times [2023-12-22 16:31:53,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 16:31:53,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1124731334] [2023-12-22 16:31:53,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 16:31:53,061 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 16:31:53,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 16:31:53,062 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 16:31:53,064 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 16:31:53,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 16:31:53,599 INFO L262 TraceCheckSpWp]: Trace formula consists of 1673 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 16:31:53,651 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 16:31:53,923 INFO L134 CoverageAnalysis]: Checked inductivity of 2822 backedges. 1162 proven. 0 refuted. 0 times theorem prover too weak. 1660 trivial. 0 not checked. [2023-12-22 16:31:53,924 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 16:31:53,924 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 16:31:53,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1124731334] [2023-12-22 16:31:53,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1124731334] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 16:31:53,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 16:31:53,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 16:31:53,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215280062] [2023-12-22 16:31:53,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 16:31:53,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 16:31:53,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 16:31:53,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 16:31:53,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 16:31:53,926 INFO L87 Difference]: Start difference. First operand 76593 states and 79808 transitions. Second operand has 3 states, 3 states have (on average 259.6666666666667) internal successors, (779), 3 states have internal predecessors, (779), 0 states have call successors, (0), 0 states 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 16:32:07,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 16:32:07,551 INFO L93 Difference]: Finished difference Result 165605 states and 173318 transitions. [2023-12-22 16:32:07,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 16:32:07,552 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 259.6666666666667) internal successors, (779), 3 states have internal predecessors, (779), 0 states have call successors, (0), 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 1582 [2023-12-22 16:32:07,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 16:32:07,648 INFO L225 Difference]: With dead ends: 165605 [2023-12-22 16:32:07,649 INFO L226 Difference]: Without dead ends: 86253 [2023-12-22 16:32:07,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1581 GetRequests, 1580 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 16:32:07,688 INFO L413 NwaCegarLoop]: 935 mSDtfsCounter, 498 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1663 mSolverCounterSat, 277 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 940 SdHoareTripleChecker+Invalid, 1940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 277 IncrementalHoareTripleChecker+Valid, 1663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.1s IncrementalHoareTripleChecker+Time [2023-12-22 16:32:07,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [498 Valid, 940 Invalid, 1940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [277 Valid, 1663 Invalid, 0 Unknown, 0 Unchecked, 13.1s Time] [2023-12-22 16:32:07,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86253 states. [2023-12-22 16:32:08,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86253 to 85563. [2023-12-22 16:32:08,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85563 states, 85562 states have (on average 1.0363362240246838) internal successors, (88671), 85562 states have internal predecessors, (88671), 0 states have call successors, (0), 0 states 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 16:32:08,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85563 states to 85563 states and 88671 transitions. [2023-12-22 16:32:08,814 INFO L78 Accepts]: Start accepts. Automaton has 85563 states and 88671 transitions. Word has length 1582 [2023-12-22 16:32:08,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 16:32:08,815 INFO L495 AbstractCegarLoop]: Abstraction has 85563 states and 88671 transitions. [2023-12-22 16:32:08,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 259.6666666666667) internal successors, (779), 3 states have internal predecessors, (779), 0 states have call successors, (0), 0 states 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 16:32:08,815 INFO L276 IsEmpty]: Start isEmpty. Operand 85563 states and 88671 transitions. [2023-12-22 16:32:08,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1755 [2023-12-22 16:32:08,883 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 16:32:08,884 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, 7, 7, 7, 7, 7, 7, 7, 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, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:32:08,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-12-22 16:32:09,090 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 16:32:09,091 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 16:32:09,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 16:32:09,092 INFO L85 PathProgramCache]: Analyzing trace with hash 65875894, now seen corresponding path program 1 times [2023-12-22 16:32:09,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 16:32:09,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1287319067] [2023-12-22 16:32:09,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 16:32:09,098 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 16:32:09,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 16:32:09,121 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 16:32:09,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-12-22 16:32:09,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 16:32:09,715 INFO L262 TraceCheckSpWp]: Trace formula consists of 1848 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-22 16:32:09,725 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 16:32:11,725 INFO L134 CoverageAnalysis]: Checked inductivity of 3450 backedges. 1218 proven. 1886 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2023-12-22 16:32:11,725 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 16:32:12,525 INFO L134 CoverageAnalysis]: Checked inductivity of 3450 backedges. 2102 proven. 0 refuted. 0 times theorem prover too weak. 1348 trivial. 0 not checked. [2023-12-22 16:32:12,525 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 16:32:12,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1287319067] [2023-12-22 16:32:12,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1287319067] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-22 16:32:12,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-22 16:32:12,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2023-12-22 16:32:12,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718442063] [2023-12-22 16:32:12,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 16:32:12,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 16:32:12,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 16:32:12,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 16:32:12,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-22 16:32:12,529 INFO L87 Difference]: Start difference. First operand 85563 states and 88671 transitions. Second operand has 3 states, 3 states have (on average 326.3333333333333) internal successors, (979), 3 states have internal predecessors, (979), 0 states have call successors, (0), 0 states 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 16:32:18,720 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 16:32:22,191 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 16:32:47,823 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 16:33:04,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 16:33:04,196 INFO L93 Difference]: Finished difference Result 176645 states and 183491 transitions. [2023-12-22 16:33:04,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 16:33:04,213 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 326.3333333333333) internal successors, (979), 3 states have internal predecessors, (979), 0 states have call successors, (0), 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 1754 [2023-12-22 16:33:04,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 16:33:04,302 INFO L225 Difference]: With dead ends: 176645 [2023-12-22 16:33:04,302 INFO L226 Difference]: Without dead ends: 93153 [2023-12-22 16:33:04,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3506 GetRequests, 3501 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-22 16:33:04,338 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 457 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1701 mSolverCounterSat, 319 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 2020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 319 IncrementalHoareTripleChecker+Valid, 1701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 51.1s IncrementalHoareTripleChecker+Time [2023-12-22 16:33:04,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [457 Valid, 184 Invalid, 2020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [319 Valid, 1701 Invalid, 0 Unknown, 0 Unchecked, 51.1s Time] [2023-12-22 16:33:04,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93153 states. [2023-12-22 16:33:05,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93153 to 92463. [2023-12-22 16:33:05,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92463 states, 92462 states have (on average 1.037788496896022) internal successors, (95956), 92462 states have internal predecessors, (95956), 0 states have call successors, (0), 0 states 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 16:33:05,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92463 states to 92463 states and 95956 transitions. [2023-12-22 16:33:05,474 INFO L78 Accepts]: Start accepts. Automaton has 92463 states and 95956 transitions. Word has length 1754 [2023-12-22 16:33:05,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 16:33:05,474 INFO L495 AbstractCegarLoop]: Abstraction has 92463 states and 95956 transitions. [2023-12-22 16:33:05,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 326.3333333333333) internal successors, (979), 3 states have internal predecessors, (979), 0 states have call successors, (0), 0 states 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 16:33:05,475 INFO L276 IsEmpty]: Start isEmpty. Operand 92463 states and 95956 transitions. [2023-12-22 16:33:05,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1813 [2023-12-22 16:33:05,515 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 16:33:05,515 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, 7, 7, 7, 7, 7, 7, 7, 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, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1] [2023-12-22 16:33:05,522 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Ended with exit code 0 [2023-12-22 16:33:05,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 16:33:05,722 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 16:33:05,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 16:33:05,723 INFO L85 PathProgramCache]: Analyzing trace with hash -913353433, now seen corresponding path program 1 times [2023-12-22 16:33:05,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 16:33:05,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [34746943] [2023-12-22 16:33:05,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 16:33:05,728 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 16:33:05,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 16:33:05,729 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 16:33:05,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-12-22 16:33:06,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 16:33:06,399 INFO L262 TraceCheckSpWp]: Trace formula consists of 1906 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-22 16:33:06,409 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 16:33:08,523 INFO L134 CoverageAnalysis]: Checked inductivity of 3513 backedges. 293 proven. 2923 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2023-12-22 16:33:08,524 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 16:33:23,039 INFO L134 CoverageAnalysis]: Checked inductivity of 3513 backedges. 2729 proven. 209 refuted. 0 times theorem prover too weak. 575 trivial. 0 not checked. [2023-12-22 16:33:23,040 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 16:33:23,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [34746943] [2023-12-22 16:33:23,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [34746943] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 16:33:23,040 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 16:33:23,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 10 [2023-12-22 16:33:23,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092886653] [2023-12-22 16:33:23,040 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 16:33:23,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-22 16:33:23,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 16:33:23,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-22 16:33:23,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-22 16:33:23,044 INFO L87 Difference]: Start difference. First operand 92463 states and 95956 transitions. Second operand has 10 states, 10 states have (on average 284.3) internal successors, (2843), 10 states have internal predecessors, (2843), 0 states have call successors, (0), 0 states 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 16:33:34,601 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 16:33:44,194 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 16:35:23,058 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 16:36:10,695 WARN L539 Checker$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 16:36:16,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 16:36:16,838 INFO L93 Difference]: Finished difference Result 223565 states and 232869 transitions. [2023-12-22 16:36:16,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-22 16:36:16,845 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 284.3) internal successors, (2843), 10 states have internal predecessors, (2843), 0 states have call successors, (0), 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 1812 [2023-12-22 16:36:16,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 16:36:17,153 INFO L225 Difference]: With dead ends: 223565 [2023-12-22 16:36:17,154 INFO L226 Difference]: Without dead ends: 133173 [2023-12-22 16:36:17,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3624 GetRequests, 3615 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2023-12-22 16:36:17,193 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 4498 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 23593 mSolverCounterSat, 1269 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 162.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4498 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 24862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1269 IncrementalHoareTripleChecker+Valid, 23593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 172.6s IncrementalHoareTripleChecker+Time [2023-12-22 16:36:17,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4498 Valid, 160 Invalid, 24862 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1269 Valid, 23593 Invalid, 0 Unknown, 0 Unchecked, 172.6s Time] [2023-12-22 16:36:17,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133173 states. [2023-12-22 16:36:18,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133173 to 115233. [2023-12-22 16:36:18,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115233 states, 115232 states have (on average 1.0403880866425992) internal successors, (119886), 115232 states have internal predecessors, (119886), 0 states have call successors, (0), 0 states 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 16:36:18,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115233 states to 115233 states and 119886 transitions. [2023-12-22 16:36:18,807 INFO L78 Accepts]: Start accepts. Automaton has 115233 states and 119886 transitions. Word has length 1812 [2023-12-22 16:36:18,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 16:36:18,808 INFO L495 AbstractCegarLoop]: Abstraction has 115233 states and 119886 transitions. [2023-12-22 16:36:18,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 284.3) internal successors, (2843), 10 states have internal predecessors, (2843), 0 states have call successors, (0), 0 states 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 16:36:18,809 INFO L276 IsEmpty]: Start isEmpty. Operand 115233 states and 119886 transitions. [2023-12-22 16:36:18,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1944 [2023-12-22 16:36:18,994 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 16:36:18,995 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-22 16:36:19,003 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 (21)] Ended with exit code 0 [2023-12-22 16:36:19,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 16:36:19,203 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 16:36:19,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 16:36:19,204 INFO L85 PathProgramCache]: Analyzing trace with hash -629074397, now seen corresponding path program 1 times [2023-12-22 16:36:19,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 16:36:19,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1579291654] [2023-12-22 16:36:19,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 16:36:19,209 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 16:36:19,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 16:36:19,210 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 16:36:19,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-12-22 16:36:19,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 16:36:19,706 INFO L262 TraceCheckSpWp]: Trace formula consists of 2044 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 16:36:19,715 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 16:36:20,034 INFO L134 CoverageAnalysis]: Checked inductivity of 4667 backedges. 2557 proven. 0 refuted. 0 times theorem prover too weak. 2110 trivial. 0 not checked. [2023-12-22 16:36:20,034 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 16:36:20,035 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 16:36:20,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1579291654] [2023-12-22 16:36:20,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1579291654] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 16:36:20,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 16:36:20,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 16:36:20,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83065329] [2023-12-22 16:36:20,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 16:36:20,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 16:36:20,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 16:36:20,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 16:36:20,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 16:36:20,037 INFO L87 Difference]: Start difference. First operand 115233 states and 119886 transitions. Second operand has 3 states, 3 states have (on average 323.3333333333333) internal successors, (970), 3 states have internal predecessors, (970), 0 states have call successors, (0), 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 16:36:29,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 16:36:29,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1942 GetRequests, 1941 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 16:36:29,818 INFO L413 NwaCegarLoop]: 901 mSDtfsCounter, 457 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1688 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 906 SdHoareTripleChecker+Invalid, 1849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 1688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2023-12-22 16:36:29,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [457 Valid, 906 Invalid, 1849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 1688 Invalid, 0 Unknown, 0 Unchecked, 9.4s Time] [2023-12-22 16:36:29,819 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-22 16:36:29,828 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-12-22 16:36:29,844 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 16:36:29,844 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 (22)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-22 16:36:30,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 16:36:30,021 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (115233states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (87752 states constructed, input type IntersectNwa). [2023-12-22 16:36:30,024 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 16:36:30,026 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-22 16:36:30,028 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 04:36:30 BoogieIcfgContainer [2023-12-22 16:36:30,028 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-22 16:36:30,028 INFO L158 Benchmark]: Toolchain (without parser) took 859055.99ms. Allocated memory was 239.1MB in the beginning and 1.9GB in the end (delta: 1.7GB). Free memory was 178.8MB in the beginning and 1.5GB in the end (delta: -1.4GB). Peak memory consumption was 549.5MB. Max. memory is 8.0GB. [2023-12-22 16:36:30,028 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 175.1MB. Free memory is still 128.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-22 16:36:30,029 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1031.53ms. Allocated memory is still 239.1MB. Free memory was 178.4MB in the beginning and 101.4MB in the end (delta: 77.0MB). Peak memory consumption was 76.7MB. Max. memory is 8.0GB. [2023-12-22 16:36:30,029 INFO L158 Benchmark]: Boogie Procedure Inliner took 151.99ms. Allocated memory is still 239.1MB. Free memory was 101.4MB in the beginning and 178.6MB in the end (delta: -77.2MB). Peak memory consumption was 18.2MB. Max. memory is 8.0GB. [2023-12-22 16:36:30,029 INFO L158 Benchmark]: Boogie Preprocessor took 180.64ms. Allocated memory is still 239.1MB. Free memory was 178.6MB in the beginning and 151.6MB in the end (delta: 27.0MB). Peak memory consumption was 27.3MB. Max. memory is 8.0GB. [2023-12-22 16:36:30,029 INFO L158 Benchmark]: RCFGBuilder took 10514.50ms. Allocated memory was 239.1MB in the beginning and 317.7MB in the end (delta: 78.6MB). Free memory was 151.6MB in the beginning and 211.2MB in the end (delta: -59.6MB). Peak memory consumption was 144.2MB. Max. memory is 8.0GB. [2023-12-22 16:36:30,029 INFO L158 Benchmark]: TraceAbstraction took 847169.92ms. Allocated memory was 317.7MB in the beginning and 1.9GB in the end (delta: 1.6GB). Free memory was 210.7MB in the beginning and 1.5GB in the end (delta: -1.3GB). Peak memory consumption was 502.4MB. Max. memory is 8.0GB. [2023-12-22 16:36:30,030 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 175.1MB. Free memory is still 128.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1031.53ms. Allocated memory is still 239.1MB. Free memory was 178.4MB in the beginning and 101.4MB in the end (delta: 77.0MB). Peak memory consumption was 76.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 151.99ms. Allocated memory is still 239.1MB. Free memory was 101.4MB in the beginning and 178.6MB in the end (delta: -77.2MB). Peak memory consumption was 18.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 180.64ms. Allocated memory is still 239.1MB. Free memory was 178.6MB in the beginning and 151.6MB in the end (delta: 27.0MB). Peak memory consumption was 27.3MB. Max. memory is 8.0GB. * RCFGBuilder took 10514.50ms. Allocated memory was 239.1MB in the beginning and 317.7MB in the end (delta: 78.6MB). Free memory was 151.6MB in the beginning and 211.2MB in the end (delta: -59.6MB). Peak memory consumption was 144.2MB. Max. memory is 8.0GB. * TraceAbstraction took 847169.92ms. Allocated memory was 317.7MB in the beginning and 1.9GB in the end (delta: 1.6GB). Free memory was 210.7MB in the beginning and 1.5GB in the end (delta: -1.3GB). Peak memory consumption was 502.4MB. 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: 172]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 172). Cancelled while NwaCegarLoop was constructing difference of abstraction (115233states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (87752 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 695 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 847.1s, OverallIterations: 21, TraceHistogramMax: 8, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.6s, AutomataDifference: 784.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 27045 SdHoareTripleChecker+Valid, 774.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 27045 mSDsluCounter, 12523 SdHoareTripleChecker+Invalid, 699.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 353 mSDsCounter, 9869 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 79144 IncrementalHoareTripleChecker+Invalid, 89013 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9869 mSolverCounterUnsat, 12170 mSDtfsCounter, 79144 mSolverCounterSat, 0.5s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 27672 GetRequests, 27618 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=115233occurred in iteration=20, InterpolantAutomatonStates: 80, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 9.3s AutomataMinimizationTime, 20 MinimizatonAttempts, 35880 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.7s SsaConstructionTime, 3.3s SatisfiabilityAnalysisTime, 41.9s InterpolantComputationTime, 19362 NumberOfCodeBlocks, 19362 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 27665 ConstructedInterpolants, 0 QuantifiedInterpolants, 70074 SizeOfPredicates, 5 NumberOfNonLiveVariables, 20717 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 28 InterpolantComputations, 18 PerfectInterpolantSequences, 31525/39089 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