/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/Problem16_label57.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-22 14:53:50,186 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-22 14:53:50,269 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 14:53:50,275 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-22 14:53:50,275 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-22 14:53:50,302 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-22 14:53:50,303 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-22 14:53:50,303 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-22 14:53:50,304 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-22 14:53:50,307 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-22 14:53:50,308 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-22 14:53:50,308 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-22 14:53:50,308 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-22 14:53:50,309 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-22 14:53:50,309 INFO L153 SettingsManager]: * Use SBE=true [2023-12-22 14:53:50,310 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-22 14:53:50,310 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-22 14:53:50,310 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-22 14:53:50,311 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-22 14:53:50,311 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-22 14:53:50,311 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-22 14:53:50,311 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-22 14:53:50,312 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-22 14:53:50,312 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-22 14:53:50,312 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-22 14:53:50,312 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-22 14:53:50,312 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-22 14:53:50,313 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-22 14:53:50,313 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-22 14:53:50,313 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-22 14:53:50,314 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-22 14:53:50,314 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-22 14:53:50,314 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-22 14:53:50,314 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-22 14:53:50,315 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 14:53:50,315 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-22 14:53:50,315 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-22 14:53:50,315 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-22 14:53:50,315 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-22 14:53:50,315 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-22 14:53:50,315 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-22 14:53:50,316 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-22 14:53:50,316 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-22 14:53:50,316 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-22 14:53:50,316 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-22 14:53:50,316 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-22 14:53:50,317 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-22 14:53:50,482 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-22 14:53:50,508 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-22 14:53:50,512 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-22 14:53:50,513 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-22 14:53:50,513 INFO L274 PluginConnector]: CDTParser initialized [2023-12-22 14:53:50,515 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label57.c [2023-12-22 14:53:51,630 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-22 14:53:51,947 INFO L384 CDTParser]: Found 1 translation units. [2023-12-22 14:53:51,948 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label57.c [2023-12-22 14:53:51,966 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e13a10134/b383303bcfff4c708e1f0251c84b0557/FLAG5a15c111b [2023-12-22 14:53:51,980 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e13a10134/b383303bcfff4c708e1f0251c84b0557 [2023-12-22 14:53:51,983 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-22 14:53:51,984 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-22 14:53:51,986 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-22 14:53:51,987 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-22 14:53:51,991 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-22 14:53:51,991 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:53:51" (1/1) ... [2023-12-22 14:53:51,992 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2494c25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:53:51, skipping insertion in model container [2023-12-22 14:53:51,992 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:53:51" (1/1) ... [2023-12-22 14:53:52,051 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-22 14:53:52,248 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/Problem16_label57.c[4337,4350] [2023-12-22 14:53:52,564 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 14:53:52,573 INFO L202 MainTranslator]: Completed pre-run [2023-12-22 14:53:52,593 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/Problem16_label57.c[4337,4350] [2023-12-22 14:53:52,888 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 14:53:52,903 INFO L206 MainTranslator]: Completed translation [2023-12-22 14:53:52,903 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:53:52 WrapperNode [2023-12-22 14:53:52,904 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-22 14:53:52,905 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-22 14:53:52,905 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-22 14:53:52,905 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-22 14:53:52,911 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:53:52" (1/1) ... [2023-12-22 14:53:52,939 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:53:52" (1/1) ... [2023-12-22 14:53:53,017 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1767 [2023-12-22 14:53:53,017 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-22 14:53:53,021 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-22 14:53:53,021 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-22 14:53:53,021 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-22 14:53:53,030 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:53:52" (1/1) ... [2023-12-22 14:53:53,030 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:53:52" (1/1) ... [2023-12-22 14:53:53,037 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:53:52" (1/1) ... [2023-12-22 14:53:53,078 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 14:53:53,078 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:53:52" (1/1) ... [2023-12-22 14:53:53,078 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:53:52" (1/1) ... [2023-12-22 14:53:53,132 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:53:52" (1/1) ... [2023-12-22 14:53:53,153 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:53:52" (1/1) ... [2023-12-22 14:53:53,166 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:53:52" (1/1) ... [2023-12-22 14:53:53,173 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:53:52" (1/1) ... [2023-12-22 14:53:53,181 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-22 14:53:53,182 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-22 14:53:53,182 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-22 14:53:53,182 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-22 14:53:53,183 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:53:52" (1/1) ... [2023-12-22 14:53:53,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 14:53:53,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-22 14:53:53,208 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 14:53:53,236 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 14:53:53,242 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-22 14:53:53,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-22 14:53:53,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-22 14:53:53,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-22 14:53:53,292 INFO L241 CfgBuilder]: Building ICFG [2023-12-22 14:53:53,294 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-22 14:54:00,079 INFO L282 CfgBuilder]: Performing block encoding [2023-12-22 14:54:00,120 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-22 14:54:00,120 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-22 14:54:00,121 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:54:00 BoogieIcfgContainer [2023-12-22 14:54:00,121 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-22 14:54:00,123 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-22 14:54:00,123 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-22 14:54:00,126 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-22 14:54:00,126 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 02:53:51" (1/3) ... [2023-12-22 14:54:00,127 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c11ab74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:54:00, skipping insertion in model container [2023-12-22 14:54:00,127 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:53:52" (2/3) ... [2023-12-22 14:54:00,127 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c11ab74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:54:00, skipping insertion in model container [2023-12-22 14:54:00,128 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:54:00" (3/3) ... [2023-12-22 14:54:00,129 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label57.c [2023-12-22 14:54:00,140 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-22 14:54:00,140 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-22 14:54:00,198 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-22 14:54:00,204 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;@20d6ce52, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-22 14:54:00,204 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-22 14:54:00,209 INFO L276 IsEmpty]: Start isEmpty. Operand has 334 states, 332 states have (on average 1.9909638554216869) internal successors, (661), 333 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 14:54:00,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-22 14:54:00,214 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 14:54:00,215 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 14:54:00,215 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 14:54:00,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 14:54:00,219 INFO L85 PathProgramCache]: Analyzing trace with hash -857842055, now seen corresponding path program 1 times [2023-12-22 14:54:00,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 14:54:00,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [910764420] [2023-12-22 14:54:00,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 14:54:00,231 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 14:54:00,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 14:54:00,236 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 14:54:00,237 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 14:54:00,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 14:54:00,288 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-22 14:54:00,291 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 14:54:00,318 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 14:54:00,318 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 14:54:00,318 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 14:54:00,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [910764420] [2023-12-22 14:54:00,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [910764420] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 14:54:00,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 14:54:00,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 14:54:00,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755161154] [2023-12-22 14:54:00,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 14:54:00,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-22 14:54:00,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 14:54:00,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-22 14:54:00,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-22 14:54:00,355 INFO L87 Difference]: Start difference. First operand has 334 states, 332 states have (on average 1.9909638554216869) internal successors, (661), 333 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) Second operand has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 14:54:00,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 14:54:00,417 INFO L93 Difference]: Finished difference Result 667 states and 1321 transitions. [2023-12-22 14:54:00,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-22 14:54:00,424 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2023-12-22 14:54:00,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 14:54:00,440 INFO L225 Difference]: With dead ends: 667 [2023-12-22 14:54:00,440 INFO L226 Difference]: Without dead ends: 332 [2023-12-22 14:54:00,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 38 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 14:54:00,449 INFO L413 NwaCegarLoop]: 596 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, 596 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 14:54:00,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 596 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 14:54:00,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2023-12-22 14:54:00,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 332. [2023-12-22 14:54:00,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 331 states have (on average 1.8006042296072509) internal successors, (596), 331 states have internal predecessors, (596), 0 states have call successors, (0), 0 states 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 14:54:00,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 596 transitions. [2023-12-22 14:54:00,511 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 596 transitions. Word has length 39 [2023-12-22 14:54:00,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 14:54:00,512 INFO L495 AbstractCegarLoop]: Abstraction has 332 states and 596 transitions. [2023-12-22 14:54:00,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 14:54:00,512 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 596 transitions. [2023-12-22 14:54:00,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-22 14:54:00,513 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 14:54:00,513 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] [2023-12-22 14:54:00,523 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-22 14:54:00,716 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 14:54:00,717 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 14:54:00,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 14:54:00,717 INFO L85 PathProgramCache]: Analyzing trace with hash 232130583, now seen corresponding path program 1 times [2023-12-22 14:54:00,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 14:54:00,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [760721057] [2023-12-22 14:54:00,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 14:54:00,719 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 14:54:00,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 14:54:00,720 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 14:54:00,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-22 14:54:00,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 14:54:00,753 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 14:54:00,754 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 14:54:00,824 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 14:54:00,824 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 14:54:00,824 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 14:54:00,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [760721057] [2023-12-22 14:54:00,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [760721057] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 14:54:00,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 14:54:00,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 14:54:00,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323257869] [2023-12-22 14:54:00,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 14:54:00,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 14:54:00,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 14:54:00,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 14:54:00,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 14:54:00,833 INFO L87 Difference]: Start difference. First operand 332 states and 596 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 14:54:09,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 14:54:09,282 INFO L93 Difference]: Finished difference Result 992 states and 1785 transitions. [2023-12-22 14:54:09,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 14:54:09,282 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2023-12-22 14:54:09,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 14:54:09,285 INFO L225 Difference]: With dead ends: 992 [2023-12-22 14:54:09,285 INFO L226 Difference]: Without dead ends: 661 [2023-12-22 14:54:09,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 37 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 14:54:09,287 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 301 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 962 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 1180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2023-12-22 14:54:09,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [301 Valid, 223 Invalid, 1180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 962 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2023-12-22 14:54:09,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2023-12-22 14:54:09,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 661. [2023-12-22 14:54:09,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 661 states, 660 states have (on average 1.4833333333333334) internal successors, (979), 660 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 14:54:09,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 979 transitions. [2023-12-22 14:54:09,313 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 979 transitions. Word has length 39 [2023-12-22 14:54:09,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 14:54:09,314 INFO L495 AbstractCegarLoop]: Abstraction has 661 states and 979 transitions. [2023-12-22 14:54:09,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 14:54:09,314 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 979 transitions. [2023-12-22 14:54:09,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-22 14:54:09,316 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 14:54:09,316 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:54:09,319 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 14:54:09,518 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 14:54:09,519 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 14:54:09,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 14:54:09,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1297407513, now seen corresponding path program 1 times [2023-12-22 14:54:09,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 14:54:09,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2074756075] [2023-12-22 14:54:09,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 14:54:09,521 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 14:54:09,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 14:54:09,522 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 14:54:09,524 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 14:54:09,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 14:54:09,588 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 14:54:09,590 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 14:54:09,720 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 14:54:09,720 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 14:54:09,720 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 14:54:09,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2074756075] [2023-12-22 14:54:09,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2074756075] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 14:54:09,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 14:54:09,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 14:54:09,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673460639] [2023-12-22 14:54:09,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 14:54:09,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 14:54:09,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 14:54:09,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 14:54:09,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 14:54:09,723 INFO L87 Difference]: Start difference. First operand 661 states and 979 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 2 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 14:54:16,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 14:54:16,243 INFO L93 Difference]: Finished difference Result 1650 states and 2340 transitions. [2023-12-22 14:54:16,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 14:54:16,243 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 2 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2023-12-22 14:54:16,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 14:54:16,247 INFO L225 Difference]: With dead ends: 1650 [2023-12-22 14:54:16,247 INFO L226 Difference]: Without dead ends: 990 [2023-12-22 14:54:16,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 109 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 14:54:16,251 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 260 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 946 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2023-12-22 14:54:16,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 247 Invalid, 969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 946 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2023-12-22 14:54:16,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2023-12-22 14:54:16,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 990. [2023-12-22 14:54:16,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 990 states, 989 states have (on average 1.352881698685541) internal successors, (1338), 989 states have internal predecessors, (1338), 0 states have call successors, (0), 0 states 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 14:54:16,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 990 states to 990 states and 1338 transitions. [2023-12-22 14:54:16,270 INFO L78 Accepts]: Start accepts. Automaton has 990 states and 1338 transitions. Word has length 111 [2023-12-22 14:54:16,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 14:54:16,271 INFO L495 AbstractCegarLoop]: Abstraction has 990 states and 1338 transitions. [2023-12-22 14:54:16,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 2 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 14:54:16,271 INFO L276 IsEmpty]: Start isEmpty. Operand 990 states and 1338 transitions. [2023-12-22 14:54:16,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-22 14:54:16,274 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 14:54:16,275 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:54:16,281 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 14:54:16,478 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 14:54:16,478 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 14:54:16,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 14:54:16,479 INFO L85 PathProgramCache]: Analyzing trace with hash -512238308, now seen corresponding path program 1 times [2023-12-22 14:54:16,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 14:54:16,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [372068258] [2023-12-22 14:54:16,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 14:54:16,480 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 14:54:16,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 14:54:16,482 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 14:54:16,493 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 14:54:16,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 14:54:16,553 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 14:54:16,556 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 14:54:16,636 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 14:54:16,637 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 14:54:16,637 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 14:54:16,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [372068258] [2023-12-22 14:54:16,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [372068258] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 14:54:16,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 14:54:16,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 14:54:16,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065828987] [2023-12-22 14:54:16,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 14:54:16,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 14:54:16,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 14:54:16,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 14:54:16,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 14:54:16,639 INFO L87 Difference]: Start difference. First operand 990 states and 1338 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 14:54:25,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 14:54:25,654 INFO L93 Difference]: Finished difference Result 1979 states and 2910 transitions. [2023-12-22 14:54:25,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 14:54:25,655 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2023-12-22 14:54:25,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 14:54:25,660 INFO L225 Difference]: With dead ends: 1979 [2023-12-22 14:54:25,660 INFO L226 Difference]: Without dead ends: 1319 [2023-12-22 14:54:25,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 14:54:25,662 INFO L413 NwaCegarLoop]: 531 mSDtfsCounter, 344 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 797 mSolverCounterSat, 388 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 1185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 388 IncrementalHoareTripleChecker+Valid, 797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2023-12-22 14:54:25,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 536 Invalid, 1185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [388 Valid, 797 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2023-12-22 14:54:25,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1319 states. [2023-12-22 14:54:25,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1319 to 1319. [2023-12-22 14:54:25,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1319 states, 1318 states have (on average 1.3148710166919575) internal successors, (1733), 1318 states have internal predecessors, (1733), 0 states have call successors, (0), 0 states 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 14:54:25,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 1733 transitions. [2023-12-22 14:54:25,684 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 1733 transitions. Word has length 126 [2023-12-22 14:54:25,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 14:54:25,685 INFO L495 AbstractCegarLoop]: Abstraction has 1319 states and 1733 transitions. [2023-12-22 14:54:25,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 14:54:25,685 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 1733 transitions. [2023-12-22 14:54:25,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-12-22 14:54:25,687 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 14:54:25,688 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:54:25,694 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 14:54:25,891 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 14:54:25,892 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 14:54:25,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 14:54:25,892 INFO L85 PathProgramCache]: Analyzing trace with hash 18415357, now seen corresponding path program 1 times [2023-12-22 14:54:25,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 14:54:25,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [726707464] [2023-12-22 14:54:25,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 14:54:25,894 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 14:54:25,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 14:54:25,895 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 14:54:25,905 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 14:54:25,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 14:54:25,982 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 14:54:25,985 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 14:54:26,175 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 14:54:26,175 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 14:54:26,175 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 14:54:26,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [726707464] [2023-12-22 14:54:26,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [726707464] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 14:54:26,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 14:54:26,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 14:54:26,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662162834] [2023-12-22 14:54:26,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 14:54:26,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 14:54:26,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 14:54:26,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 14:54:26,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 14:54:26,178 INFO L87 Difference]: Start difference. First operand 1319 states and 1733 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 0 states 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 14:54:35,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 14:54:35,323 INFO L93 Difference]: Finished difference Result 3624 states and 4837 transitions. [2023-12-22 14:54:35,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 14:54:35,323 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 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 164 [2023-12-22 14:54:35,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 14:54:35,331 INFO L225 Difference]: With dead ends: 3624 [2023-12-22 14:54:35,332 INFO L226 Difference]: Without dead ends: 2635 [2023-12-22 14:54:35,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 162 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 14:54:35,333 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 225 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 822 mSolverCounterSat, 384 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 1206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 384 IncrementalHoareTripleChecker+Valid, 822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2023-12-22 14:54:35,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 239 Invalid, 1206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [384 Valid, 822 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2023-12-22 14:54:35,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2635 states. [2023-12-22 14:54:35,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2635 to 2635. [2023-12-22 14:54:35,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2635 states, 2634 states have (on average 1.2031131359149583) internal successors, (3169), 2634 states have internal predecessors, (3169), 0 states have call successors, (0), 0 states 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 14:54:35,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2635 states to 2635 states and 3169 transitions. [2023-12-22 14:54:35,374 INFO L78 Accepts]: Start accepts. Automaton has 2635 states and 3169 transitions. Word has length 164 [2023-12-22 14:54:35,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 14:54:35,374 INFO L495 AbstractCegarLoop]: Abstraction has 2635 states and 3169 transitions. [2023-12-22 14:54:35,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 0 states 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 14:54:35,375 INFO L276 IsEmpty]: Start isEmpty. Operand 2635 states and 3169 transitions. [2023-12-22 14:54:35,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2023-12-22 14:54:35,379 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 14:54:35,379 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 14:54:35,385 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 14:54:35,583 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 14:54:35,583 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 14:54:35,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 14:54:35,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1223743044, now seen corresponding path program 1 times [2023-12-22 14:54:35,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 14:54:35,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1557174016] [2023-12-22 14:54:35,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 14:54:35,585 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 14:54:35,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 14:54:35,586 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 14:54:35,587 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 14:54:35,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 14:54:35,721 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-22 14:54:35,726 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 14:54:36,906 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 240 proven. 78 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-12-22 14:54:36,906 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 14:54:43,054 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 240 proven. 78 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-12-22 14:54:43,054 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 14:54:43,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1557174016] [2023-12-22 14:54:43,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1557174016] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 14:54:43,055 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 14:54:43,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-12-22 14:54:43,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488357560] [2023-12-22 14:54:43,055 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 14:54:43,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-22 14:54:43,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 14:54:43,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-22 14:54:43,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-22 14:54:43,057 INFO L87 Difference]: Start difference. First operand 2635 states and 3169 transitions. Second operand has 7 states, 7 states have (on average 58.0) internal successors, (406), 6 states have internal predecessors, (406), 0 states have call successors, (0), 0 states 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 14:55:01,497 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 14:55:10,981 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.65s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 14:55:12,175 WARN L539 Checker$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 14:55:44,412 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 14:55:45,542 WARN L539 Checker$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 14:55:46,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 14:55:46,007 INFO L93 Difference]: Finished difference Result 6429 states and 7611 transitions. [2023-12-22 14:55:46,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-22 14:55:46,009 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 58.0) internal successors, (406), 6 states have internal predecessors, (406), 0 states have call successors, (0), 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 299 [2023-12-22 14:55:46,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 14:55:46,018 INFO L225 Difference]: With dead ends: 6429 [2023-12-22 14:55:46,018 INFO L226 Difference]: Without dead ends: 2964 [2023-12-22 14:55:46,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 602 GetRequests, 591 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2023-12-22 14:55:46,030 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 2929 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 4349 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 56.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2929 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 4799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 4349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 62.2s IncrementalHoareTripleChecker+Time [2023-12-22 14:55:46,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2929 Valid, 123 Invalid, 4799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 4349 Invalid, 0 Unknown, 0 Unchecked, 62.2s Time] [2023-12-22 14:55:46,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2964 states. [2023-12-22 14:55:46,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2964 to 2964. [2023-12-22 14:55:46,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2964 states, 2963 states have (on average 1.072224097198785) internal successors, (3177), 2963 states have internal predecessors, (3177), 0 states have call successors, (0), 0 states 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 14:55:46,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2964 states to 2964 states and 3177 transitions. [2023-12-22 14:55:46,070 INFO L78 Accepts]: Start accepts. Automaton has 2964 states and 3177 transitions. Word has length 299 [2023-12-22 14:55:46,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 14:55:46,070 INFO L495 AbstractCegarLoop]: Abstraction has 2964 states and 3177 transitions. [2023-12-22 14:55:46,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 58.0) internal successors, (406), 6 states have internal predecessors, (406), 0 states have call successors, (0), 0 states 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 14:55:46,071 INFO L276 IsEmpty]: Start isEmpty. Operand 2964 states and 3177 transitions. [2023-12-22 14:55:46,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2023-12-22 14:55:46,075 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 14:55:46,076 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-22 14:55:46,084 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 14:55:46,281 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 14:55:46,282 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 14:55:46,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 14:55:46,282 INFO L85 PathProgramCache]: Analyzing trace with hash -817602358, now seen corresponding path program 1 times [2023-12-22 14:55:46,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 14:55:46,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1729306194] [2023-12-22 14:55:46,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 14:55:46,284 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 14:55:46,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 14:55:46,285 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 14:55:46,286 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 14:55:46,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 14:55:46,448 INFO L262 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 14:55:46,453 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 14:55:47,203 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 199 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 14:55:47,204 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 14:55:47,204 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 14:55:47,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1729306194] [2023-12-22 14:55:47,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1729306194] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 14:55:47,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 14:55:47,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 14:55:47,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103203581] [2023-12-22 14:55:47,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 14:55:47,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 14:55:47,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 14:55:47,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 14:55:47,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 14:55:47,206 INFO L87 Difference]: Start difference. First operand 2964 states and 3177 transitions. Second operand has 4 states, 4 states have (on average 99.75) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states 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 14:55:51,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 14:55:51,121 INFO L93 Difference]: Finished difference Result 5598 states and 6022 transitions. [2023-12-22 14:55:51,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 14:55:51,126 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 99.75) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 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 399 [2023-12-22 14:55:51,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 14:55:51,135 INFO L225 Difference]: With dead ends: 5598 [2023-12-22 14:55:51,135 INFO L226 Difference]: Without dead ends: 2964 [2023-12-22 14:55:51,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 396 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 14:55:51,139 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 301 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 1545 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 1551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-12-22 14:55:51,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [301 Valid, 133 Invalid, 1551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1545 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-12-22 14:55:51,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2964 states. [2023-12-22 14:55:51,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2964 to 2964. [2023-12-22 14:55:51,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2964 states, 2963 states have (on average 1.069861626729666) internal successors, (3170), 2963 states have internal predecessors, (3170), 0 states have call successors, (0), 0 states 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 14:55:51,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2964 states to 2964 states and 3170 transitions. [2023-12-22 14:55:51,176 INFO L78 Accepts]: Start accepts. Automaton has 2964 states and 3170 transitions. Word has length 399 [2023-12-22 14:55:51,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 14:55:51,176 INFO L495 AbstractCegarLoop]: Abstraction has 2964 states and 3170 transitions. [2023-12-22 14:55:51,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 99.75) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states 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 14:55:51,177 INFO L276 IsEmpty]: Start isEmpty. Operand 2964 states and 3170 transitions. [2023-12-22 14:55:51,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 504 [2023-12-22 14:55:51,183 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 14:55:51,185 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:55:51,195 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 14:55:51,389 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 14:55:51,389 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 14:55:51,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 14:55:51,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1744531402, now seen corresponding path program 1 times [2023-12-22 14:55:51,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 14:55:51,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1564233775] [2023-12-22 14:55:51,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 14:55:51,392 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 14:55:51,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 14:55:51,394 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 14:55:51,428 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 14:55:51,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 14:55:51,548 INFO L262 TraceCheckSpWp]: Trace formula consists of 558 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-22 14:55:51,553 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 14:55:52,403 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 113 proven. 315 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 14:55:52,403 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 14:55:53,559 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 333 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-12-22 14:55:53,559 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 14:55:53,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1564233775] [2023-12-22 14:55:53,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1564233775] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-22 14:55:53,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-22 14:55:53,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-12-22 14:55:53,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879010911] [2023-12-22 14:55:53,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 14:55:53,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 14:55:53,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 14:55:53,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 14:55:53,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-22 14:55:53,562 INFO L87 Difference]: Start difference. First operand 2964 states and 3170 transitions. Second operand has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states 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 14:56:04,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 14:56:04,925 INFO L93 Difference]: Finished difference Result 6256 states and 6802 transitions. [2023-12-22 14:56:04,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 14:56:04,932 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 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 503 [2023-12-22 14:56:04,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 14:56:04,943 INFO L225 Difference]: With dead ends: 6256 [2023-12-22 14:56:04,943 INFO L226 Difference]: Without dead ends: 3951 [2023-12-22 14:56:04,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1004 GetRequests, 1000 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-22 14:56:04,946 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 210 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2023-12-22 14:56:04,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 24 Invalid, 975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 770 Invalid, 0 Unknown, 0 Unchecked, 11.3s Time] [2023-12-22 14:56:04,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3951 states. [2023-12-22 14:56:04,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3951 to 3951. [2023-12-22 14:56:04,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3951 states, 3950 states have (on average 1.0835443037974684) internal successors, (4280), 3950 states have internal predecessors, (4280), 0 states have call successors, (0), 0 states 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 14:56:04,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3951 states to 3951 states and 4280 transitions. [2023-12-22 14:56:05,000 INFO L78 Accepts]: Start accepts. Automaton has 3951 states and 4280 transitions. Word has length 503 [2023-12-22 14:56:05,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 14:56:05,000 INFO L495 AbstractCegarLoop]: Abstraction has 3951 states and 4280 transitions. [2023-12-22 14:56:05,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states 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 14:56:05,001 INFO L276 IsEmpty]: Start isEmpty. Operand 3951 states and 4280 transitions. [2023-12-22 14:56:05,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2023-12-22 14:56:05,010 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 14:56:05,010 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-22 14:56:05,016 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 14:56:05,216 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 14:56:05,217 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 14:56:05,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 14:56:05,217 INFO L85 PathProgramCache]: Analyzing trace with hash -993824206, now seen corresponding path program 1 times [2023-12-22 14:56:05,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 14:56:05,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1668612779] [2023-12-22 14:56:05,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 14:56:05,220 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 14:56:05,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 14:56:05,221 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 14:56:05,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-22 14:56:05,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 14:56:05,368 INFO L262 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 14:56:05,373 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 14:56:06,996 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2023-12-22 14:56:06,997 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 14:56:06,997 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 14:56:06,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1668612779] [2023-12-22 14:56:06,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1668612779] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 14:56:06,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 14:56:06,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 14:56:06,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296055094] [2023-12-22 14:56:06,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 14:56:07,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 14:56:07,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 14:56:07,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 14:56:07,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 14:56:07,001 INFO L87 Difference]: Start difference. First operand 3951 states and 4280 transitions. Second operand has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 2 states have internal predecessors, (286), 0 states have call successors, (0), 0 states 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 14:56:10,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 14:56:10,873 INFO L93 Difference]: Finished difference Result 7243 states and 7896 transitions. [2023-12-22 14:56:10,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 14:56:10,882 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 2 states have internal predecessors, (286), 0 states have call successors, (0), 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 527 [2023-12-22 14:56:10,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 14:56:10,894 INFO L225 Difference]: With dead ends: 7243 [2023-12-22 14:56:10,894 INFO L226 Difference]: Without dead ends: 3951 [2023-12-22 14:56:10,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 526 GetRequests, 525 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 14:56:10,900 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 85 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-12-22 14:56:10,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 125 Invalid, 775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 774 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-12-22 14:56:10,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3951 states. [2023-12-22 14:56:10,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3951 to 3951. [2023-12-22 14:56:10,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3951 states, 3950 states have (on average 1.0832911392405062) internal successors, (4279), 3950 states have internal predecessors, (4279), 0 states have call successors, (0), 0 states 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 14:56:10,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3951 states to 3951 states and 4279 transitions. [2023-12-22 14:56:10,959 INFO L78 Accepts]: Start accepts. Automaton has 3951 states and 4279 transitions. Word has length 527 [2023-12-22 14:56:10,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 14:56:10,960 INFO L495 AbstractCegarLoop]: Abstraction has 3951 states and 4279 transitions. [2023-12-22 14:56:10,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 2 states have internal predecessors, (286), 0 states have call successors, (0), 0 states 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 14:56:10,960 INFO L276 IsEmpty]: Start isEmpty. Operand 3951 states and 4279 transitions. [2023-12-22 14:56:10,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 538 [2023-12-22 14:56:10,964 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 14:56:10,965 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:56:10,972 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 14:56:11,168 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 14:56:11,169 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 14:56:11,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 14:56:11,169 INFO L85 PathProgramCache]: Analyzing trace with hash -588821259, now seen corresponding path program 1 times [2023-12-22 14:56:11,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 14:56:11,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1520720421] [2023-12-22 14:56:11,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 14:56:11,171 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 14:56:11,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 14:56:11,172 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 14:56:11,176 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 14:56:11,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 14:56:11,342 INFO L262 TraceCheckSpWp]: Trace formula consists of 593 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-22 14:56:11,348 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 14:56:13,636 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 113 proven. 349 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 14:56:13,637 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 14:56:16,512 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 422 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 14:56:16,512 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 14:56:16,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1520720421] [2023-12-22 14:56:16,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1520720421] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 14:56:16,512 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 14:56:16,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-12-22 14:56:16,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802381182] [2023-12-22 14:56:16,513 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 14:56:16,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-22 14:56:16,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 14:56:16,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-22 14:56:16,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-22 14:56:16,515 INFO L87 Difference]: Start difference. First operand 3951 states and 4279 transitions. Second operand has 9 states, 9 states have (on average 110.55555555555556) internal successors, (995), 8 states have internal predecessors, (995), 0 states have call successors, (0), 0 states 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 14:56:24,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 14:56:24,719 INFO L93 Difference]: Finished difference Result 8244 states and 8932 transitions. [2023-12-22 14:56:24,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-22 14:56:24,726 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 110.55555555555556) internal successors, (995), 8 states have internal predecessors, (995), 0 states have call successors, (0), 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 537 [2023-12-22 14:56:24,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 14:56:24,736 INFO L225 Difference]: With dead ends: 8244 [2023-12-22 14:56:24,737 INFO L226 Difference]: Without dead ends: 4952 [2023-12-22 14:56:24,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1078 GetRequests, 1065 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2023-12-22 14:56:24,740 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 1972 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 4742 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1972 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 4888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 4742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2023-12-22 14:56:24,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1972 Valid, 176 Invalid, 4888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 4742 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2023-12-22 14:56:24,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4952 states. [2023-12-22 14:56:24,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4952 to 4609. [2023-12-22 14:56:24,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4609 states, 4608 states have (on average 1.0726996527777777) internal successors, (4943), 4608 states have internal predecessors, (4943), 0 states have call successors, (0), 0 states 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 14:56:24,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4609 states to 4609 states and 4943 transitions. [2023-12-22 14:56:24,827 INFO L78 Accepts]: Start accepts. Automaton has 4609 states and 4943 transitions. Word has length 537 [2023-12-22 14:56:24,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 14:56:24,828 INFO L495 AbstractCegarLoop]: Abstraction has 4609 states and 4943 transitions. [2023-12-22 14:56:24,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 110.55555555555556) internal successors, (995), 8 states have internal predecessors, (995), 0 states have call successors, (0), 0 states 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 14:56:24,835 INFO L276 IsEmpty]: Start isEmpty. Operand 4609 states and 4943 transitions. [2023-12-22 14:56:24,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 595 [2023-12-22 14:56:24,841 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 14:56:24,841 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:56:24,848 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-22 14:56:25,047 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 14:56:25,048 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 14:56:25,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 14:56:25,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1878263623, now seen corresponding path program 1 times [2023-12-22 14:56:25,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 14:56:25,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2056485186] [2023-12-22 14:56:25,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 14:56:25,050 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 14:56:25,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 14:56:25,051 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 14:56:25,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-22 14:56:25,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 14:56:25,215 INFO L262 TraceCheckSpWp]: Trace formula consists of 650 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 14:56:25,219 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 14:56:25,412 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 424 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2023-12-22 14:56:25,412 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 14:56:25,412 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 14:56:25,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2056485186] [2023-12-22 14:56:25,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2056485186] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 14:56:25,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 14:56:25,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 14:56:25,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367867670] [2023-12-22 14:56:25,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 14:56:25,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 14:56:25,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 14:56:25,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 14:56:25,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 14:56:25,415 INFO L87 Difference]: Start difference. First operand 4609 states and 4943 transitions. Second operand has 3 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 0 states 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 14:56:30,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 14:56:30,410 INFO L93 Difference]: Finished difference Result 9217 states and 10000 transitions. [2023-12-22 14:56:30,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 14:56:30,410 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 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 594 [2023-12-22 14:56:30,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 14:56:30,426 INFO L225 Difference]: With dead ends: 9217 [2023-12-22 14:56:30,426 INFO L226 Difference]: Without dead ends: 5596 [2023-12-22 14:56:30,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 593 GetRequests, 592 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 14:56:30,431 INFO L413 NwaCegarLoop]: 432 mSDtfsCounter, 171 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 778 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-12-22 14:56:30,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 437 Invalid, 874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 778 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-12-22 14:56:30,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5596 states. [2023-12-22 14:56:30,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5596 to 5596. [2023-12-22 14:56:30,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5596 states, 5595 states have (on average 1.064343163538874) internal successors, (5955), 5595 states have internal predecessors, (5955), 0 states have call successors, (0), 0 states 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 14:56:30,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5596 states to 5596 states and 5955 transitions. [2023-12-22 14:56:30,499 INFO L78 Accepts]: Start accepts. Automaton has 5596 states and 5955 transitions. Word has length 594 [2023-12-22 14:56:30,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 14:56:30,499 INFO L495 AbstractCegarLoop]: Abstraction has 5596 states and 5955 transitions. [2023-12-22 14:56:30,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 0 states 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 14:56:30,500 INFO L276 IsEmpty]: Start isEmpty. Operand 5596 states and 5955 transitions. [2023-12-22 14:56:30,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 653 [2023-12-22 14:56:30,507 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 14:56:30,507 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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 14:56:30,515 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 14:56:30,712 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 14:56:30,712 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 14:56:30,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 14:56:30,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1161840672, now seen corresponding path program 1 times [2023-12-22 14:56:30,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 14:56:30,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1377006434] [2023-12-22 14:56:30,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 14:56:30,715 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 14:56:30,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 14:56:30,716 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 14:56:30,717 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 14:56:30,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 14:56:30,895 INFO L262 TraceCheckSpWp]: Trace formula consists of 708 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-22 14:56:30,900 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 14:56:32,604 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 113 proven. 317 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2023-12-22 14:56:32,605 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 14:56:46,661 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 113 proven. 317 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2023-12-22 14:56:46,662 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 14:56:46,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1377006434] [2023-12-22 14:56:46,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1377006434] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 14:56:46,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 14:56:46,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-12-22 14:56:46,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150611891] [2023-12-22 14:56:46,663 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 14:56:46,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-22 14:56:46,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 14:56:46,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-22 14:56:46,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-22 14:56:46,665 INFO L87 Difference]: Start difference. First operand 5596 states and 5955 transitions. Second operand has 7 states, 7 states have (on average 111.57142857142857) internal successors, (781), 6 states have internal predecessors, (781), 0 states have call successors, (0), 0 states 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 14:57:01,542 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 14:57:03,322 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 14:57:06,900 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 14:57:32,375 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 14:57:46,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 14:57:46,109 INFO L93 Difference]: Finished difference Result 13847 states and 14910 transitions. [2023-12-22 14:57:46,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-22 14:57:46,122 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 111.57142857142857) internal successors, (781), 6 states have internal predecessors, (781), 0 states have call successors, (0), 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 652 [2023-12-22 14:57:46,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 14:57:46,137 INFO L225 Difference]: With dead ends: 13847 [2023-12-22 14:57:46,138 INFO L226 Difference]: Without dead ends: 9239 [2023-12-22 14:57:46,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1307 GetRequests, 1297 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2023-12-22 14:57:46,142 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 1203 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 3353 mSolverCounterSat, 247 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 53.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1203 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 3600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 247 IncrementalHoareTripleChecker+Valid, 3353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 58.7s IncrementalHoareTripleChecker+Time [2023-12-22 14:57:46,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1203 Valid, 131 Invalid, 3600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [247 Valid, 3353 Invalid, 0 Unknown, 0 Unchecked, 58.7s Time] [2023-12-22 14:57:46,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9239 states. [2023-12-22 14:57:46,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9239 to 7241. [2023-12-22 14:57:46,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7241 states, 7240 states have (on average 1.082596685082873) internal successors, (7838), 7240 states have internal predecessors, (7838), 0 states have call successors, (0), 0 states 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 14:57:46,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7241 states to 7241 states and 7838 transitions. [2023-12-22 14:57:46,229 INFO L78 Accepts]: Start accepts. Automaton has 7241 states and 7838 transitions. Word has length 652 [2023-12-22 14:57:46,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 14:57:46,229 INFO L495 AbstractCegarLoop]: Abstraction has 7241 states and 7838 transitions. [2023-12-22 14:57:46,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 111.57142857142857) internal successors, (781), 6 states have internal predecessors, (781), 0 states have call successors, (0), 0 states 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 14:57:46,230 INFO L276 IsEmpty]: Start isEmpty. Operand 7241 states and 7838 transitions. [2023-12-22 14:57:46,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 655 [2023-12-22 14:57:46,237 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 14:57:46,237 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 14:57:46,244 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 14:57:46,441 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 14:57:46,441 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 14:57:46,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 14:57:46,442 INFO L85 PathProgramCache]: Analyzing trace with hash -898283707, now seen corresponding path program 1 times [2023-12-22 14:57:46,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 14:57:46,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [688967997] [2023-12-22 14:57:46,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 14:57:46,444 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 14:57:46,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 14:57:46,445 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 14:57:46,446 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 14:57:46,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 14:57:46,610 INFO L262 TraceCheckSpWp]: Trace formula consists of 710 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 14:57:46,614 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 14:57:46,673 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2023-12-22 14:57:46,673 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 14:57:46,673 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 14:57:46,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [688967997] [2023-12-22 14:57:46,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [688967997] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 14:57:46,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 14:57:46,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 14:57:46,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729936203] [2023-12-22 14:57:46,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 14:57:46,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 14:57:46,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 14:57:46,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 14:57:46,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 14:57:46,675 INFO L87 Difference]: Start difference. First operand 7241 states and 7838 transitions. Second operand has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states 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 14:57:52,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 14:57:52,336 INFO L93 Difference]: Finished difference Result 15468 states and 17049 transitions. [2023-12-22 14:57:52,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 14:57:52,337 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 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 654 [2023-12-22 14:57:52,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 14:57:52,352 INFO L225 Difference]: With dead ends: 15468 [2023-12-22 14:57:52,352 INFO L226 Difference]: Without dead ends: 9215 [2023-12-22 14:57:52,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 653 GetRequests, 652 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 14:57:52,358 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 307 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-12-22 14:57:52,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 436 Invalid, 868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 763 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2023-12-22 14:57:52,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9215 states. [2023-12-22 14:57:52,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9215 to 8557. [2023-12-22 14:57:52,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8557 states, 8556 states have (on average 1.0771388499298737) internal successors, (9216), 8556 states have internal predecessors, (9216), 0 states have call successors, (0), 0 states 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 14:57:52,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8557 states to 8557 states and 9216 transitions. [2023-12-22 14:57:52,468 INFO L78 Accepts]: Start accepts. Automaton has 8557 states and 9216 transitions. Word has length 654 [2023-12-22 14:57:52,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 14:57:52,468 INFO L495 AbstractCegarLoop]: Abstraction has 8557 states and 9216 transitions. [2023-12-22 14:57:52,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states 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 14:57:52,469 INFO L276 IsEmpty]: Start isEmpty. Operand 8557 states and 9216 transitions. [2023-12-22 14:57:52,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 723 [2023-12-22 14:57:52,479 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 14:57:52,479 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:57:52,486 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-12-22 14:57:52,683 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 14:57:52,683 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 14:57:52,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 14:57:52,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1375523433, now seen corresponding path program 1 times [2023-12-22 14:57:52,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 14:57:52,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1209390893] [2023-12-22 14:57:52,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 14:57:52,687 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 14:57:52,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 14:57:52,688 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 14:57:52,697 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 14:57:52,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 14:57:52,930 INFO L262 TraceCheckSpWp]: Trace formula consists of 777 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-22 14:57:52,935 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 14:57:54,483 INFO L134 CoverageAnalysis]: Checked inductivity of 704 backedges. 591 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 14:57:54,483 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 14:58:29,259 INFO L134 CoverageAnalysis]: Checked inductivity of 704 backedges. 591 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 14:58:29,260 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 14:58:29,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1209390893] [2023-12-22 14:58:29,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1209390893] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 14:58:29,260 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 14:58:29,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-12-22 14:58:29,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61445076] [2023-12-22 14:58:29,260 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 14:58:29,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-22 14:58:29,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 14:58:29,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-22 14:58:29,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-12-22 14:58:29,262 INFO L87 Difference]: Start difference. First operand 8557 states and 9216 transitions. Second operand has 8 states, 8 states have (on average 149.125) internal successors, (1193), 7 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states 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 14:58:59,947 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 14:59:18,380 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.41s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 14:59:30,527 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 14:59:35,122 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.75s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 14:59:41,746 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 14:59:44,673 WARN L539 Checker$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 14:59:53,566 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.05s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 14:59:57,179 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 14:59:59,828 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.57s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 15:00:08,445 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 15:00:11,308 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 15:00:12,514 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 15:00:20,116 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 15:00:23,399 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 15:00:26,587 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.46s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 15:00:28,267 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 15:00:34,594 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 15:00:37,838 WARN L539 Checker$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 15:00:45,259 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 15:00:46,320 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 15:00:49,683 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 15:00:53,367 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 15:00:58,095 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 15:01:03,694 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 15:01:05,428 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 15:01:07,895 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 15:01:10,282 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 15:01:15,495 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 15:01:20,938 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 15:01:24,799 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 15:01:37,370 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 15:01:38,455 WARN L539 Checker$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 15:01:40,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 15:01:40,634 INFO L93 Difference]: Finished difference Result 21504 states and 23447 transitions. [2023-12-22 15:01:40,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-22 15:01:40,635 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 149.125) internal successors, (1193), 7 states have internal predecessors, (1193), 0 states have call successors, (0), 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 722 [2023-12-22 15:01:40,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 15:01:40,653 INFO L225 Difference]: With dead ends: 21504 [2023-12-22 15:01:40,653 INFO L226 Difference]: Without dead ends: 12505 [2023-12-22 15:01:40,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1442 GetRequests, 1436 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-12-22 15:01:40,660 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 650 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 3035 mSolverCounterSat, 296 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 175.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 650 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 3332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 296 IncrementalHoareTripleChecker+Valid, 3035 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 191.1s IncrementalHoareTripleChecker+Time [2023-12-22 15:01:40,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [650 Valid, 54 Invalid, 3332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [296 Valid, 3035 Invalid, 1 Unknown, 0 Unchecked, 191.1s Time] [2023-12-22 15:01:40,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12505 states. [2023-12-22 15:01:40,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12505 to 11189. [2023-12-22 15:01:40,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11189 states, 11188 states have (on average 1.0842867357883446) internal successors, (12131), 11188 states have internal predecessors, (12131), 0 states have call successors, (0), 0 states 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 15:01:40,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11189 states to 11189 states and 12131 transitions. [2023-12-22 15:01:40,792 INFO L78 Accepts]: Start accepts. Automaton has 11189 states and 12131 transitions. Word has length 722 [2023-12-22 15:01:40,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 15:01:40,793 INFO L495 AbstractCegarLoop]: Abstraction has 11189 states and 12131 transitions. [2023-12-22 15:01:40,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 149.125) internal successors, (1193), 7 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states 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 15:01:40,793 INFO L276 IsEmpty]: Start isEmpty. Operand 11189 states and 12131 transitions. [2023-12-22 15:01:40,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 820 [2023-12-22 15:01:40,805 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 15:01:40,805 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 15:01:40,815 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-12-22 15:01:41,012 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 15:01:41,013 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 15:01:41,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 15:01:41,013 INFO L85 PathProgramCache]: Analyzing trace with hash -2016436848, now seen corresponding path program 1 times [2023-12-22 15:01:41,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 15:01:41,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [926287323] [2023-12-22 15:01:41,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 15:01:41,016 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 15:01:41,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 15:01:41,017 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 15:01:41,018 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 15:01:41,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 15:01:41,240 INFO L262 TraceCheckSpWp]: Trace formula consists of 873 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-22 15:01:41,248 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 15:01:44,127 INFO L134 CoverageAnalysis]: Checked inductivity of 865 backedges. 510 proven. 355 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 15:01:44,127 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 15:02:15,082 INFO L134 CoverageAnalysis]: Checked inductivity of 865 backedges. 510 proven. 355 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 15:02:15,083 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 15:02:15,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [926287323] [2023-12-22 15:02:15,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [926287323] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 15:02:15,083 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 15:02:15,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-12-22 15:02:15,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673098240] [2023-12-22 15:02:15,083 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 15:02:15,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-22 15:02:15,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 15:02:15,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-22 15:02:15,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-22 15:02:15,086 INFO L87 Difference]: Start difference. First operand 11189 states and 12131 transitions. Second operand has 8 states, 8 states have (on average 173.375) internal successors, (1387), 7 states have internal predecessors, (1387), 0 states have call successors, (0), 0 states 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 15:02:46,495 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 15:02:59,773 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 15:03:10,720 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 15:03:16,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 15:03:16,157 INFO L93 Difference]: Finished difference Result 22548 states and 24501 transitions. [2023-12-22 15:03:16,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-22 15:03:16,158 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 173.375) internal successors, (1387), 7 states have internal predecessors, (1387), 0 states have call successors, (0), 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 819 [2023-12-22 15:03:16,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 15:03:16,176 INFO L225 Difference]: With dead ends: 22548 [2023-12-22 15:03:16,176 INFO L226 Difference]: Without dead ends: 12176 [2023-12-22 15:03:16,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1639 GetRequests, 1630 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-12-22 15:03:16,188 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 663 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 4384 mSolverCounterSat, 51 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 52.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 663 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 4436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 4384 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 59.8s IncrementalHoareTripleChecker+Time [2023-12-22 15:03:16,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [663 Valid, 169 Invalid, 4436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 4384 Invalid, 1 Unknown, 0 Unchecked, 59.8s Time] [2023-12-22 15:03:16,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12176 states. [2023-12-22 15:03:16,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12176 to 11847. [2023-12-22 15:03:16,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11847 states, 11846 states have (on average 1.084754347459058) internal successors, (12850), 11846 states have internal predecessors, (12850), 0 states have call successors, (0), 0 states 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 15:03:16,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11847 states to 11847 states and 12850 transitions. [2023-12-22 15:03:16,368 INFO L78 Accepts]: Start accepts. Automaton has 11847 states and 12850 transitions. Word has length 819 [2023-12-22 15:03:16,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 15:03:16,369 INFO L495 AbstractCegarLoop]: Abstraction has 11847 states and 12850 transitions. [2023-12-22 15:03:16,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 173.375) internal successors, (1387), 7 states have internal predecessors, (1387), 0 states have call successors, (0), 0 states 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 15:03:16,369 INFO L276 IsEmpty]: Start isEmpty. Operand 11847 states and 12850 transitions. [2023-12-22 15:03:16,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1025 [2023-12-22 15:03:16,386 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 15:03:16,386 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 15:03:16,395 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-12-22 15:03:16,593 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 15:03:16,593 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 15:03:16,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 15:03:16,594 INFO L85 PathProgramCache]: Analyzing trace with hash -271401160, now seen corresponding path program 1 times [2023-12-22 15:03:16,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 15:03:16,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1119121738] [2023-12-22 15:03:16,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 15:03:16,599 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 15:03:16,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 15:03:16,600 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 15:03:16,628 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 15:03:16,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 15:03:16,916 INFO L262 TraceCheckSpWp]: Trace formula consists of 1086 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 15:03:16,923 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 15:03:19,612 INFO L134 CoverageAnalysis]: Checked inductivity of 1541 backedges. 1283 proven. 0 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2023-12-22 15:03:19,613 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 15:03:19,613 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 15:03:19,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1119121738] [2023-12-22 15:03:19,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1119121738] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 15:03:19,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 15:03:19,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 15:03:19,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282949163] [2023-12-22 15:03:19,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 15:03:19,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 15:03:19,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 15:03:19,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 15:03:19,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 15:03:19,615 INFO L87 Difference]: Start difference. First operand 11847 states and 12850 transitions. Second operand has 4 states, 4 states have (on average 192.0) internal successors, (768), 3 states have internal predecessors, (768), 0 states have call successors, (0), 0 states 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 15:03:26,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 15:03:26,042 INFO L93 Difference]: Finished difference Result 23035 states and 25050 transitions. [2023-12-22 15:03:26,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 15:03:26,049 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 192.0) internal successors, (768), 3 states have internal predecessors, (768), 0 states have call successors, (0), 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 1024 [2023-12-22 15:03:26,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 15:03:26,064 INFO L225 Difference]: With dead ends: 23035 [2023-12-22 15:03:26,064 INFO L226 Difference]: Without dead ends: 12176 [2023-12-22 15:03:26,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1023 GetRequests, 1021 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 15:03:26,074 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 170 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 1533 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 1555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-12-22 15:03:26,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 114 Invalid, 1555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1533 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2023-12-22 15:03:26,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12176 states. [2023-12-22 15:03:26,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12176 to 12176. [2023-12-22 15:03:26,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12176 states, 12175 states have (on average 1.0814784394250514) internal successors, (13167), 12175 states have internal predecessors, (13167), 0 states have call successors, (0), 0 states 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 15:03:26,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12176 states to 12176 states and 13167 transitions. [2023-12-22 15:03:26,216 INFO L78 Accepts]: Start accepts. Automaton has 12176 states and 13167 transitions. Word has length 1024 [2023-12-22 15:03:26,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 15:03:26,217 INFO L495 AbstractCegarLoop]: Abstraction has 12176 states and 13167 transitions. [2023-12-22 15:03:26,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 192.0) internal successors, (768), 3 states have internal predecessors, (768), 0 states have call successors, (0), 0 states 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 15:03:26,217 INFO L276 IsEmpty]: Start isEmpty. Operand 12176 states and 13167 transitions. [2023-12-22 15:03:26,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1064 [2023-12-22 15:03:26,232 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 15:03:26,235 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:03:26,242 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 (17)] Forceful destruction successful, exit code 0 [2023-12-22 15:03:26,442 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 15:03:26,442 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 15:03:26,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 15:03:26,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1203660287, now seen corresponding path program 1 times [2023-12-22 15:03:26,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 15:03:26,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1268384615] [2023-12-22 15:03:26,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 15:03:26,446 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 15:03:26,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 15:03:26,447 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 15:03:26,449 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 15:03:26,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 15:03:26,739 INFO L262 TraceCheckSpWp]: Trace formula consists of 1139 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 15:03:26,745 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 15:03:27,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1899 backedges. 1324 proven. 0 refuted. 0 times theorem prover too weak. 575 trivial. 0 not checked. [2023-12-22 15:03:27,039 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 15:03:27,039 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 15:03:27,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1268384615] [2023-12-22 15:03:27,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1268384615] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 15:03:27,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 15:03:27,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 15:03:27,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309415940] [2023-12-22 15:03:27,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 15:03:27,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 15:03:27,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 15:03:27,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 15:03:27,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 15:03:27,042 INFO L87 Difference]: Start difference. First operand 12176 states and 13167 transitions. Second operand has 3 states, 3 states have (on average 216.33333333333334) internal successors, (649), 3 states have internal predecessors, (649), 0 states have call successors, (0), 0 states 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 15:03:32,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 15:03:32,490 INFO L93 Difference]: Finished difference Result 25009 states and 27156 transitions. [2023-12-22 15:03:32,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 15:03:32,491 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 216.33333333333334) internal successors, (649), 3 states have internal predecessors, (649), 0 states have call successors, (0), 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 1063 [2023-12-22 15:03:32,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 15:03:32,502 INFO L225 Difference]: With dead ends: 25009 [2023-12-22 15:03:32,502 INFO L226 Difference]: Without dead ends: 13821 [2023-12-22 15:03:32,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1062 GetRequests, 1061 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 15:03:32,506 INFO L413 NwaCegarLoop]: 416 mSDtfsCounter, 194 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 781 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-12-22 15:03:32,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 421 Invalid, 862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 781 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2023-12-22 15:03:32,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13821 states. [2023-12-22 15:03:32,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13821 to 13821. [2023-12-22 15:03:32,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13821 states, 13820 states have (on average 1.0614327062228655) internal successors, (14669), 13820 states have internal predecessors, (14669), 0 states have call successors, (0), 0 states 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 15:03:32,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13821 states to 13821 states and 14669 transitions. [2023-12-22 15:03:32,697 INFO L78 Accepts]: Start accepts. Automaton has 13821 states and 14669 transitions. Word has length 1063 [2023-12-22 15:03:32,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 15:03:32,697 INFO L495 AbstractCegarLoop]: Abstraction has 13821 states and 14669 transitions. [2023-12-22 15:03:32,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 216.33333333333334) internal successors, (649), 3 states have internal predecessors, (649), 0 states have call successors, (0), 0 states 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 15:03:32,698 INFO L276 IsEmpty]: Start isEmpty. Operand 13821 states and 14669 transitions. [2023-12-22 15:03:32,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1299 [2023-12-22 15:03:32,722 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 15:03:32,723 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 6, 6, 6, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:03:32,728 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-12-22 15:03:32,923 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 15:03:32,924 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 15:03:32,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 15:03:32,924 INFO L85 PathProgramCache]: Analyzing trace with hash 170308080, now seen corresponding path program 1 times [2023-12-22 15:03:32,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 15:03:32,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [664078016] [2023-12-22 15:03:32,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 15:03:32,928 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 15:03:32,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 15:03:32,929 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 15:03:32,936 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 15:03:33,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 15:03:33,295 INFO L262 TraceCheckSpWp]: Trace formula consists of 1410 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-22 15:03:33,312 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 15:03:34,877 INFO L134 CoverageAnalysis]: Checked inductivity of 4216 backedges. 2401 proven. 952 refuted. 0 times theorem prover too weak. 863 trivial. 0 not checked. [2023-12-22 15:03:34,877 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 15:03:35,739 INFO L134 CoverageAnalysis]: Checked inductivity of 4216 backedges. 2660 proven. 0 refuted. 0 times theorem prover too weak. 1556 trivial. 0 not checked. [2023-12-22 15:03:35,739 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 15:03:35,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [664078016] [2023-12-22 15:03:35,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [664078016] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-22 15:03:35,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-22 15:03:35,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2023-12-22 15:03:35,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766644703] [2023-12-22 15:03:35,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 15:03:35,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 15:03:35,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 15:03:35,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 15:03:35,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-22 15:03:35,742 INFO L87 Difference]: Start difference. First operand 13821 states and 14669 transitions. Second operand has 3 states, 3 states have (on average 167.0) internal successors, (501), 3 states have internal predecessors, (501), 0 states have call successors, (0), 0 states 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 15:03:47,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 15:03:47,613 INFO L93 Difference]: Finished difference Result 28957 states and 30923 transitions. [2023-12-22 15:03:47,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 15:03:47,613 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 167.0) internal successors, (501), 3 states have internal predecessors, (501), 0 states have call successors, (0), 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 1298 [2023-12-22 15:03:47,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 15:03:47,627 INFO L225 Difference]: With dead ends: 28957 [2023-12-22 15:03:47,628 INFO L226 Difference]: Without dead ends: 16124 [2023-12-22 15:03:47,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2594 GetRequests, 2588 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-22 15:03:47,637 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 270 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 769 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2023-12-22 15:03:47,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 18 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 769 Invalid, 0 Unknown, 0 Unchecked, 11.8s Time] [2023-12-22 15:03:47,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16124 states. [2023-12-22 15:03:47,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16124 to 16124. [2023-12-22 15:03:47,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16124 states, 16123 states have (on average 1.0659306580661168) internal successors, (17186), 16123 states have internal predecessors, (17186), 0 states have call successors, (0), 0 states 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 15:03:47,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16124 states to 16124 states and 17186 transitions. [2023-12-22 15:03:47,831 INFO L78 Accepts]: Start accepts. Automaton has 16124 states and 17186 transitions. Word has length 1298 [2023-12-22 15:03:47,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 15:03:47,832 INFO L495 AbstractCegarLoop]: Abstraction has 16124 states and 17186 transitions. [2023-12-22 15:03:47,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 167.0) internal successors, (501), 3 states have internal predecessors, (501), 0 states have call successors, (0), 0 states 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 15:03:47,832 INFO L276 IsEmpty]: Start isEmpty. Operand 16124 states and 17186 transitions. [2023-12-22 15:03:47,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1300 [2023-12-22 15:03:47,851 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 15:03:47,851 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 6, 6, 6, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:03:47,859 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 15:03:48,052 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 15:03:48,052 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 15:03:48,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 15:03:48,053 INFO L85 PathProgramCache]: Analyzing trace with hash -365079193, now seen corresponding path program 1 times [2023-12-22 15:03:48,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 15:03:48,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [530757093] [2023-12-22 15:03:48,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 15:03:48,057 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 15:03:48,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 15:03:48,058 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 15:03:48,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-12-22 15:03:48,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 15:03:48,477 INFO L262 TraceCheckSpWp]: Trace formula consists of 1413 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-22 15:03:48,484 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 15:03:50,033 INFO L134 CoverageAnalysis]: Checked inductivity of 4224 backedges. 2277 proven. 1450 refuted. 0 times theorem prover too weak. 497 trivial. 0 not checked. [2023-12-22 15:03:50,033 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 15:04:10,667 INFO L134 CoverageAnalysis]: Checked inductivity of 4224 backedges. 2968 proven. 66 refuted. 0 times theorem prover too weak. 1190 trivial. 0 not checked. [2023-12-22 15:04:10,667 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 15:04:10,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [530757093] [2023-12-22 15:04:10,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [530757093] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 15:04:10,667 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 15:04:10,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4] total 10 [2023-12-22 15:04:10,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179550343] [2023-12-22 15:04:10,668 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 15:04:10,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-22 15:04:10,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 15:04:10,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-22 15:04:10,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-12-22 15:04:10,671 INFO L87 Difference]: Start difference. First operand 16124 states and 17186 transitions. Second operand has 10 states, 10 states have (on average 141.1) internal successors, (1411), 10 states have internal predecessors, (1411), 0 states have call successors, (0), 0 states 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 15:04:36,451 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 15:04:52,769 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 15:04:54,830 WARN L539 Checker$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 15:05:02,846 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 15:05:12,517 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 15:05:19,587 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 15:05:28,527 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.73s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 15:05:32,334 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 15:05:36,407 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 15:05:42,541 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 15:05:47,616 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 15:05:49,330 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 15:05:53,063 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 15:05:56,743 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 15:05:58,468 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 15:06:02,816 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 15:06:05,925 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.52s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 15:06:08,422 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 15:06:10,814 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 15:06:18,771 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.45s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 15:06:20,106 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 15:06:30,815 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 15:06:32,393 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 15:06:36,867 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 15:06:40,469 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 15:06:41,895 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 15:06:43,167 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 15:06:48,140 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 15:06:49,977 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 15:06:52,998 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 15:06:54,173 WARN L539 Checker$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 15:06:58,373 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.44s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 15:07:02,784 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 15:07:04,073 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 15:07:05,297 WARN L539 Checker$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 15:07:08,035 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 15:07:10,379 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 15:07:15,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 15:07:15,249 INFO L93 Difference]: Finished difference Result 42448 states and 45163 transitions. [2023-12-22 15:07:15,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-22 15:07:15,250 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 141.1) internal successors, (1411), 10 states have internal predecessors, (1411), 0 states have call successors, (0), 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 1299 [2023-12-22 15:07:15,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 15:07:15,274 INFO L225 Difference]: With dead ends: 42448 [2023-12-22 15:07:15,275 INFO L226 Difference]: Without dead ends: 27312 [2023-12-22 15:07:15,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2598 GetRequests, 2589 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-12-22 15:07:15,283 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 2136 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 14579 mSolverCounterSat, 234 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 170.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2136 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 14818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 234 IncrementalHoareTripleChecker+Valid, 14579 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 183.5s IncrementalHoareTripleChecker+Time [2023-12-22 15:07:15,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2136 Valid, 218 Invalid, 14818 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [234 Valid, 14579 Invalid, 5 Unknown, 0 Unchecked, 183.5s Time] [2023-12-22 15:07:15,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27312 states. [2023-12-22 15:07:15,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27312 to 21717. [2023-12-22 15:07:15,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21717 states, 21716 states have (on average 1.0567784122306134) internal successors, (22949), 21716 states have internal predecessors, (22949), 0 states have call successors, (0), 0 states 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 15:07:15,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21717 states to 21717 states and 22949 transitions. [2023-12-22 15:07:15,549 INFO L78 Accepts]: Start accepts. Automaton has 21717 states and 22949 transitions. Word has length 1299 [2023-12-22 15:07:15,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 15:07:15,550 INFO L495 AbstractCegarLoop]: Abstraction has 21717 states and 22949 transitions. [2023-12-22 15:07:15,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 141.1) internal successors, (1411), 10 states have internal predecessors, (1411), 0 states have call successors, (0), 0 states 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 15:07:15,550 INFO L276 IsEmpty]: Start isEmpty. Operand 21717 states and 22949 transitions. [2023-12-22 15:07:15,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1314 [2023-12-22 15:07:15,626 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 15:07:15,626 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2023-12-22 15:07:15,635 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 15:07:15,827 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 15:07:15,828 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 15:07:15,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 15:07:15,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1783187527, now seen corresponding path program 1 times [2023-12-22 15:07:15,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 15:07:15,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2112136899] [2023-12-22 15:07:15,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 15:07:15,832 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 15:07:15,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 15:07:15,833 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 15:07:15,841 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 15:07:16,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 15:07:16,245 INFO L262 TraceCheckSpWp]: Trace formula consists of 1393 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-22 15:07:16,252 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 15:07:19,492 INFO L134 CoverageAnalysis]: Checked inductivity of 2819 backedges. 1651 proven. 844 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2023-12-22 15:07:19,493 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 15:07:23,104 INFO L134 CoverageAnalysis]: Checked inductivity of 2819 backedges. 1651 proven. 496 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2023-12-22 15:07:23,105 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 15:07:23,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2112136899] [2023-12-22 15:07:23,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2112136899] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 15:07:23,105 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 15:07:23,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3] total 7 [2023-12-22 15:07:23,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633841658] [2023-12-22 15:07:23,105 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 15:07:23,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-22 15:07:23,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 15:07:23,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-22 15:07:23,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-12-22 15:07:23,108 INFO L87 Difference]: Start difference. First operand 21717 states and 22949 transitions. Second operand has 8 states, 8 states have (on average 191.875) internal successors, (1535), 7 states have internal predecessors, (1535), 0 states have call successors, (0), 0 states 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 15:07:33,894 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 15:07:42,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 15:07:42,544 INFO L93 Difference]: Finished difference Result 41130 states and 43548 transitions. [2023-12-22 15:07:42,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-22 15:07:42,545 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 191.875) internal successors, (1535), 7 states have internal predecessors, (1535), 0 states have call successors, (0), 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 1313 [2023-12-22 15:07:42,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 15:07:42,563 INFO L225 Difference]: With dead ends: 41130 [2023-12-22 15:07:42,563 INFO L226 Difference]: Without dead ends: 21388 [2023-12-22 15:07:42,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2625 GetRequests, 2618 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-22 15:07:42,574 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 841 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 6494 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 6686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 6494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.2s IncrementalHoareTripleChecker+Time [2023-12-22 15:07:42,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [841 Valid, 81 Invalid, 6686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 6494 Invalid, 0 Unknown, 0 Unchecked, 19.2s Time] [2023-12-22 15:07:42,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21388 states. [2023-12-22 15:07:42,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21388 to 18756. [2023-12-22 15:07:42,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18756 states, 18755 states have (on average 1.0431351639562783) internal successors, (19564), 18755 states have internal predecessors, (19564), 0 states have call successors, (0), 0 states 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 15:07:42,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18756 states to 18756 states and 19564 transitions. [2023-12-22 15:07:42,771 INFO L78 Accepts]: Start accepts. Automaton has 18756 states and 19564 transitions. Word has length 1313 [2023-12-22 15:07:42,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 15:07:42,772 INFO L495 AbstractCegarLoop]: Abstraction has 18756 states and 19564 transitions. [2023-12-22 15:07:42,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 191.875) internal successors, (1535), 7 states have internal predecessors, (1535), 0 states have call successors, (0), 0 states 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 15:07:42,772 INFO L276 IsEmpty]: Start isEmpty. Operand 18756 states and 19564 transitions. [2023-12-22 15:07:42,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1367 [2023-12-22 15:07:42,791 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 15:07:42,792 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 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, 1, 1, 1, 1, 1, 1, 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 15:07:42,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-12-22 15:07:42,992 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 15:07:42,993 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 15:07:42,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 15:07:42,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1417678276, now seen corresponding path program 1 times [2023-12-22 15:07:42,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 15:07:42,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1953545308] [2023-12-22 15:07:42,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 15:07:42,998 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 15:07:42,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 15:07:42,999 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 15:07:42,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-12-22 15:07:43,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 15:07:43,388 INFO L262 TraceCheckSpWp]: Trace formula consists of 1449 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-22 15:07:43,395 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 15:07:45,778 INFO L134 CoverageAnalysis]: Checked inductivity of 3178 backedges. 0 proven. 2729 refuted. 0 times theorem prover too weak. 449 trivial. 0 not checked. [2023-12-22 15:07:45,778 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 15:07:57,224 INFO L134 CoverageAnalysis]: Checked inductivity of 3178 backedges. 1805 proven. 924 refuted. 0 times theorem prover too weak. 449 trivial. 0 not checked. [2023-12-22 15:07:57,224 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 15:07:57,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1953545308] [2023-12-22 15:07:57,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1953545308] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 15:07:57,225 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 15:07:57,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-12-22 15:07:57,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909138452] [2023-12-22 15:07:57,225 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 15:07:57,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-22 15:07:57,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 15:07:57,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-22 15:07:57,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-12-22 15:07:57,228 INFO L87 Difference]: Start difference. First operand 18756 states and 19564 transitions. Second operand has 10 states, 10 states have (on average 156.8) internal successors, (1568), 10 states have internal predecessors, (1568), 0 states have call successors, (0), 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 15:08:11,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 15:08:11,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2732 GetRequests, 2723 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-12-22 15:08:11,629 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 319 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 2720 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 2730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 2720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.9s IncrementalHoareTripleChecker+Time [2023-12-22 15:08:11,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [319 Valid, 45 Invalid, 2730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 2720 Invalid, 0 Unknown, 0 Unchecked, 13.9s Time] [2023-12-22 15:08:11,630 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-22 15:08:11,634 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 15:08:11,634 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 15:08:11,638 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 15:08:11,836 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 15:08:11,837 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (18756states) and FLOYD_HOARE automaton (currently 5 states, 10 states before enhancement),while ReachableStatesComputation was computing reachable states (1431 states constructed, input type IntersectNwa). [2023-12-22 15:08:11,841 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 15:08:11,843 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-22 15:08:11,845 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 03:08:11 BoogieIcfgContainer [2023-12-22 15:08:11,845 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-22 15:08:11,846 INFO L158 Benchmark]: Toolchain (without parser) took 859861.48ms. Allocated memory was 190.8MB in the beginning and 307.2MB in the end (delta: 116.4MB). Free memory was 141.4MB in the beginning and 180.9MB in the end (delta: -39.5MB). Peak memory consumption was 193.2MB. Max. memory is 8.0GB. [2023-12-22 15:08:11,846 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 190.8MB. Free memory is still 148.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-22 15:08:11,846 INFO L158 Benchmark]: CACSL2BoogieTranslator took 917.35ms. Allocated memory is still 190.8MB. Free memory was 141.4MB in the beginning and 141.1MB in the end (delta: 344.5kB). Peak memory consumption was 63.2MB. Max. memory is 8.0GB. [2023-12-22 15:08:11,846 INFO L158 Benchmark]: Boogie Procedure Inliner took 112.22ms. Allocated memory is still 190.8MB. Free memory was 141.1MB in the beginning and 128.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-22 15:08:11,846 INFO L158 Benchmark]: Boogie Preprocessor took 160.56ms. Allocated memory is still 190.8MB. Free memory was 128.4MB in the beginning and 115.4MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-22 15:08:11,847 INFO L158 Benchmark]: RCFGBuilder took 6938.94ms. Allocated memory was 190.8MB in the beginning and 255.9MB in the end (delta: 65.0MB). Free memory was 115.4MB in the beginning and 165.0MB in the end (delta: -49.6MB). Peak memory consumption was 115.0MB. Max. memory is 8.0GB. [2023-12-22 15:08:11,847 INFO L158 Benchmark]: TraceAbstraction took 851722.59ms. Allocated memory was 255.9MB in the beginning and 307.2MB in the end (delta: 51.4MB). Free memory was 164.5MB in the beginning and 180.9MB in the end (delta: -16.4MB). Peak memory consumption was 150.3MB. Max. memory is 8.0GB. [2023-12-22 15:08:11,848 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 190.8MB. Free memory is still 148.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 917.35ms. Allocated memory is still 190.8MB. Free memory was 141.4MB in the beginning and 141.1MB in the end (delta: 344.5kB). Peak memory consumption was 63.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 112.22ms. Allocated memory is still 190.8MB. Free memory was 141.1MB in the beginning and 128.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 160.56ms. Allocated memory is still 190.8MB. Free memory was 128.4MB in the beginning and 115.4MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * RCFGBuilder took 6938.94ms. Allocated memory was 190.8MB in the beginning and 255.9MB in the end (delta: 65.0MB). Free memory was 115.4MB in the beginning and 165.0MB in the end (delta: -49.6MB). Peak memory consumption was 115.0MB. Max. memory is 8.0GB. * TraceAbstraction took 851722.59ms. Allocated memory was 255.9MB in the beginning and 307.2MB in the end (delta: 51.4MB). Free memory was 164.5MB in the beginning and 180.9MB in the end (delta: -16.4MB). Peak memory consumption was 150.3MB. 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: 137]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 137). Cancelled while NwaCegarLoop was constructing difference of abstraction (18756states) and FLOYD_HOARE automaton (currently 5 states, 10 states before enhancement),while ReachableStatesComputation was computing reachable states (1431 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 334 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 851.7s, OverallIterations: 21, TraceHistogramMax: 10, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.3s, AutomataDifference: 688.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 7 mSolverCounterUnknown, 13551 SdHoareTripleChecker+Valid, 682.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13551 mSDsluCounter, 4546 SdHoareTripleChecker+Invalid, 618.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 552 mSDsCounter, 3341 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 54898 IncrementalHoareTripleChecker+Invalid, 58246 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3341 mSolverCounterUnsat, 3994 mSDtfsCounter, 54898 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 22350 GetRequests, 22254 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 5.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21717occurred in iteration=19, InterpolantAutomatonStates: 112, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.0s AutomataMinimizationTime, 20 MinimizatonAttempts, 12871 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 2.6s SatisfiabilityAnalysisTime, 152.1s InterpolantComputationTime, 13548 NumberOfCodeBlocks, 13548 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 22325 ConstructedInterpolants, 0 QuantifiedInterpolants, 111194 SizeOfPredicates, 24 NumberOfNonLiveVariables, 14781 ConjunctsInSsa, 91 ConjunctsInUnsatCore, 31 InterpolantComputations, 13 PerfectInterpolantSequences, 31202/41093 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