/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/Problem11_label16.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-22 09:16:15,043 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-22 09:16:15,114 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 09:16:15,118 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-22 09:16:15,118 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-22 09:16:15,138 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-22 09:16:15,139 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-22 09:16:15,139 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-22 09:16:15,140 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-22 09:16:15,143 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-22 09:16:15,143 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-22 09:16:15,143 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-22 09:16:15,144 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-22 09:16:15,145 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-22 09:16:15,145 INFO L153 SettingsManager]: * Use SBE=true [2023-12-22 09:16:15,145 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-22 09:16:15,145 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-22 09:16:15,146 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-22 09:16:15,146 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-22 09:16:15,146 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-22 09:16:15,146 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-22 09:16:15,146 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-22 09:16:15,146 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-22 09:16:15,147 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-22 09:16:15,147 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-22 09:16:15,147 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-22 09:16:15,147 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-22 09:16:15,147 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-22 09:16:15,147 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-22 09:16:15,147 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-22 09:16:15,148 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-22 09:16:15,148 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-22 09:16:15,148 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-22 09:16:15,148 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-22 09:16:15,149 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 09:16:15,149 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-22 09:16:15,149 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-22 09:16:15,149 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-22 09:16:15,149 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-22 09:16:15,149 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-22 09:16:15,149 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-22 09:16:15,149 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-22 09:16:15,150 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-22 09:16:15,150 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-22 09:16:15,150 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-22 09:16:15,150 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-22 09:16:15,150 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-22 09:16:15,343 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-22 09:16:15,363 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-22 09:16:15,365 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-22 09:16:15,366 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-22 09:16:15,366 INFO L274 PluginConnector]: CDTParser initialized [2023-12-22 09:16:15,368 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label16.c [2023-12-22 09:16:16,331 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-22 09:16:16,584 INFO L384 CDTParser]: Found 1 translation units. [2023-12-22 09:16:16,585 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label16.c [2023-12-22 09:16:16,602 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b450db701/86c9752250164729abb97c5193290d91/FLAG077e112d0 [2023-12-22 09:16:16,615 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b450db701/86c9752250164729abb97c5193290d91 [2023-12-22 09:16:16,617 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-22 09:16:16,618 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-22 09:16:16,620 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-22 09:16:16,620 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-22 09:16:16,623 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-22 09:16:16,623 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:16:16" (1/1) ... [2023-12-22 09:16:16,624 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22bc1819 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:16:16, skipping insertion in model container [2023-12-22 09:16:16,624 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:16:16" (1/1) ... [2023-12-22 09:16:16,682 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-22 09:16:16,825 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/Problem11_label16.c[6270,6283] [2023-12-22 09:16:17,050 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 09:16:17,060 INFO L202 MainTranslator]: Completed pre-run [2023-12-22 09:16:17,090 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/Problem11_label16.c[6270,6283] [2023-12-22 09:16:17,198 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 09:16:17,208 INFO L206 MainTranslator]: Completed translation [2023-12-22 09:16:17,208 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:16:17 WrapperNode [2023-12-22 09:16:17,208 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-22 09:16:17,209 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-22 09:16:17,209 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-22 09:16:17,209 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-22 09:16:17,213 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:16:17" (1/1) ... [2023-12-22 09:16:17,230 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:16:17" (1/1) ... [2023-12-22 09:16:17,287 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 998 [2023-12-22 09:16:17,287 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-22 09:16:17,288 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-22 09:16:17,288 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-22 09:16:17,288 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-22 09:16:17,301 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:16:17" (1/1) ... [2023-12-22 09:16:17,302 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:16:17" (1/1) ... [2023-12-22 09:16:17,313 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:16:17" (1/1) ... [2023-12-22 09:16:17,343 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 09:16:17,343 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:16:17" (1/1) ... [2023-12-22 09:16:17,343 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:16:17" (1/1) ... [2023-12-22 09:16:17,371 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:16:17" (1/1) ... [2023-12-22 09:16:17,390 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:16:17" (1/1) ... [2023-12-22 09:16:17,395 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:16:17" (1/1) ... [2023-12-22 09:16:17,406 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:16:17" (1/1) ... [2023-12-22 09:16:17,412 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-22 09:16:17,413 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-22 09:16:17,413 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-22 09:16:17,414 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-22 09:16:17,414 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:16:17" (1/1) ... [2023-12-22 09:16:17,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 09:16:17,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-22 09:16:17,435 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 09:16:17,455 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-22 09:16:17,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-22 09:16:17,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-22 09:16:17,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-22 09:16:17,437 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 09:16:17,510 INFO L241 CfgBuilder]: Building ICFG [2023-12-22 09:16:17,512 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-22 09:16:23,655 INFO L282 CfgBuilder]: Performing block encoding [2023-12-22 09:16:23,682 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-22 09:16:23,683 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-22 09:16:23,683 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:16:23 BoogieIcfgContainer [2023-12-22 09:16:23,683 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-22 09:16:23,684 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-22 09:16:23,684 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-22 09:16:23,687 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-22 09:16:23,687 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 09:16:16" (1/3) ... [2023-12-22 09:16:23,687 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f878c32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:16:23, skipping insertion in model container [2023-12-22 09:16:23,687 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:16:17" (2/3) ... [2023-12-22 09:16:23,687 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f878c32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:16:23, skipping insertion in model container [2023-12-22 09:16:23,687 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:16:23" (3/3) ... [2023-12-22 09:16:23,688 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label16.c [2023-12-22 09:16:23,700 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-22 09:16:23,700 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-22 09:16:23,731 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-22 09:16:23,736 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;@35fc7445, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-22 09:16:23,736 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-22 09:16:23,741 INFO L276 IsEmpty]: Start isEmpty. Operand has 221 states, 219 states have (on average 1.917808219178082) internal successors, (420), 220 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 09:16:23,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-22 09:16:23,749 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 09:16:23,749 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 09:16:23,750 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 09:16:23,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 09:16:23,753 INFO L85 PathProgramCache]: Analyzing trace with hash -487293099, now seen corresponding path program 1 times [2023-12-22 09:16:23,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 09:16:23,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [705375290] [2023-12-22 09:16:23,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 09:16:23,767 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 09:16:23,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 09:16:23,772 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 09:16:23,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-22 09:16:23,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 09:16:23,839 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-22 09:16:23,842 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 09:16:23,865 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 09:16:23,865 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 09:16:23,865 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 09:16:23,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [705375290] [2023-12-22 09:16:23,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [705375290] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 09:16:23,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 09:16:23,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 09:16:23,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782966158] [2023-12-22 09:16:23,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 09:16:23,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-22 09:16:23,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 09:16:23,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-22 09:16:23,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-22 09:16:23,899 INFO L87 Difference]: Start difference. First operand has 221 states, 219 states have (on average 1.917808219178082) internal successors, (420), 220 states have internal predecessors, (420), 0 states have call successors, (0), 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 21.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 09:16:23,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 09:16:23,933 INFO L93 Difference]: Finished difference Result 441 states and 839 transitions. [2023-12-22 09:16:23,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-22 09:16:23,935 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2023-12-22 09:16:23,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 09:16:23,941 INFO L225 Difference]: With dead ends: 441 [2023-12-22 09:16:23,942 INFO L226 Difference]: Without dead ends: 219 [2023-12-22 09:16:23,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 41 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 09:16:23,946 INFO L413 NwaCegarLoop]: 355 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, 355 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 09:16:23,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 355 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 09:16:23,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2023-12-22 09:16:23,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2023-12-22 09:16:23,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 218 states have (on average 1.628440366972477) internal successors, (355), 218 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 09:16:23,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 355 transitions. [2023-12-22 09:16:23,992 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 355 transitions. Word has length 42 [2023-12-22 09:16:23,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 09:16:23,992 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 355 transitions. [2023-12-22 09:16:23,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 09:16:23,993 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 355 transitions. [2023-12-22 09:16:23,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-22 09:16:23,993 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 09:16:23,993 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 09:16:23,998 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 09:16:24,195 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 09:16:24,196 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 09:16:24,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 09:16:24,197 INFO L85 PathProgramCache]: Analyzing trace with hash 2133883198, now seen corresponding path program 1 times [2023-12-22 09:16:24,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 09:16:24,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [869260128] [2023-12-22 09:16:24,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 09:16:24,197 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 09:16:24,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 09:16:24,198 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 09:16:24,216 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 09:16:24,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 09:16:24,258 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 09:16:24,260 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 09:16:24,348 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 09:16:24,349 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 09:16:24,349 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 09:16:24,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [869260128] [2023-12-22 09:16:24,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [869260128] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 09:16:24,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 09:16:24,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 09:16:24,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538061766] [2023-12-22 09:16:24,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 09:16:24,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 09:16:24,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 09:16:24,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 09:16:24,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 09:16:24,351 INFO L87 Difference]: Start difference. First operand 219 states and 355 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 09:16:31,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 09:16:31,617 INFO L93 Difference]: Finished difference Result 627 states and 1023 transitions. [2023-12-22 09:16:31,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 09:16:31,624 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2023-12-22 09:16:31,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 09:16:31,632 INFO L225 Difference]: With dead ends: 627 [2023-12-22 09:16:31,633 INFO L226 Difference]: Without dead ends: 409 [2023-12-22 09:16:31,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 40 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 09:16:31,635 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 178 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2023-12-22 09:16:31,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 153 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2023-12-22 09:16:31,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2023-12-22 09:16:31,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 409. [2023-12-22 09:16:31,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 408 states have (on average 1.4583333333333333) internal successors, (595), 408 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 09:16:31,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 595 transitions. [2023-12-22 09:16:31,651 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 595 transitions. Word has length 42 [2023-12-22 09:16:31,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 09:16:31,651 INFO L495 AbstractCegarLoop]: Abstraction has 409 states and 595 transitions. [2023-12-22 09:16:31,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 09:16:31,652 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 595 transitions. [2023-12-22 09:16:31,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-22 09:16:31,654 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 09:16:31,654 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:16:31,658 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-12-22 09:16:31,854 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 09:16:31,855 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 09:16:31,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 09:16:31,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1077549083, now seen corresponding path program 1 times [2023-12-22 09:16:31,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 09:16:31,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1713366804] [2023-12-22 09:16:31,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 09:16:31,857 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 09:16:31,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 09:16:31,858 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 09:16:31,861 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 09:16:31,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 09:16:31,933 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 09:16:31,936 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 09:16:32,053 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 09:16:32,053 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 09:16:32,054 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 09:16:32,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1713366804] [2023-12-22 09:16:32,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1713366804] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 09:16:32,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 09:16:32,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 09:16:32,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780046660] [2023-12-22 09:16:32,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 09:16:32,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 09:16:32,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 09:16:32,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 09:16:32,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 09:16:32,064 INFO L87 Difference]: Start difference. First operand 409 states and 595 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 09:16:41,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 09:16:41,000 INFO L93 Difference]: Finished difference Result 1201 states and 1753 transitions. [2023-12-22 09:16:41,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 09:16:41,007 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2023-12-22 09:16:41,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 09:16:41,009 INFO L225 Difference]: With dead ends: 1201 [2023-12-22 09:16:41,009 INFO L226 Difference]: Without dead ends: 793 [2023-12-22 09:16:41,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 108 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 09:16:41,011 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 132 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2023-12-22 09:16:41,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 185 Invalid, 676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2023-12-22 09:16:41,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2023-12-22 09:16:41,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 781. [2023-12-22 09:16:41,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 781 states, 780 states have (on average 1.3474358974358975) internal successors, (1051), 780 states have internal predecessors, (1051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 09:16:41,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 781 states to 781 states and 1051 transitions. [2023-12-22 09:16:41,039 INFO L78 Accepts]: Start accepts. Automaton has 781 states and 1051 transitions. Word has length 110 [2023-12-22 09:16:41,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 09:16:41,039 INFO L495 AbstractCegarLoop]: Abstraction has 781 states and 1051 transitions. [2023-12-22 09:16:41,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 09:16:41,040 INFO L276 IsEmpty]: Start isEmpty. Operand 781 states and 1051 transitions. [2023-12-22 09:16:41,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-22 09:16:41,042 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 09:16:41,042 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:16:41,048 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 09:16:41,244 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 09:16:41,245 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 09:16:41,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 09:16:41,245 INFO L85 PathProgramCache]: Analyzing trace with hash -238237191, now seen corresponding path program 1 times [2023-12-22 09:16:41,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 09:16:41,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [643599818] [2023-12-22 09:16:41,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 09:16:41,247 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 09:16:41,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 09:16:41,248 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 09:16:41,251 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 09:16:41,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 09:16:41,315 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 09:16:41,318 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 09:16:41,435 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 09:16:41,435 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 09:16:41,436 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 09:16:41,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [643599818] [2023-12-22 09:16:41,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [643599818] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 09:16:41,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 09:16:41,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 09:16:41,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649853851] [2023-12-22 09:16:41,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 09:16:41,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 09:16:41,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 09:16:41,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 09:16:41,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 09:16:41,437 INFO L87 Difference]: Start difference. First operand 781 states and 1051 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 2 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 09:16:48,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 09:16:48,142 INFO L93 Difference]: Finished difference Result 1930 states and 2543 transitions. [2023-12-22 09:16:48,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 09:16:48,158 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 2 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2023-12-22 09:16:48,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 09:16:48,162 INFO L225 Difference]: With dead ends: 1930 [2023-12-22 09:16:48,162 INFO L226 Difference]: Without dead ends: 1150 [2023-12-22 09:16:48,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 09:16:48,163 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 112 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-12-22 09:16:48,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 192 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2023-12-22 09:16:48,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1150 states. [2023-12-22 09:16:48,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1150 to 1149. [2023-12-22 09:16:48,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1149 states, 1148 states have (on average 1.2569686411149825) internal successors, (1443), 1148 states have internal predecessors, (1443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 09:16:48,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1149 states to 1149 states and 1443 transitions. [2023-12-22 09:16:48,181 INFO L78 Accepts]: Start accepts. Automaton has 1149 states and 1443 transitions. Word has length 118 [2023-12-22 09:16:48,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 09:16:48,183 INFO L495 AbstractCegarLoop]: Abstraction has 1149 states and 1443 transitions. [2023-12-22 09:16:48,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 2 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 09:16:48,183 INFO L276 IsEmpty]: Start isEmpty. Operand 1149 states and 1443 transitions. [2023-12-22 09:16:48,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-12-22 09:16:48,189 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 09:16:48,189 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:16:48,195 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-12-22 09:16:48,392 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 09:16:48,393 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 09:16:48,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 09:16:48,393 INFO L85 PathProgramCache]: Analyzing trace with hash 800745904, now seen corresponding path program 1 times [2023-12-22 09:16:48,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 09:16:48,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [938273450] [2023-12-22 09:16:48,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 09:16:48,394 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 09:16:48,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 09:16:48,395 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 09:16:48,396 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 09:16:48,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 09:16:48,462 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 09:16:48,465 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 09:16:48,539 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 09:16:48,540 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 09:16:48,540 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 09:16:48,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [938273450] [2023-12-22 09:16:48,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [938273450] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 09:16:48,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 09:16:48,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 09:16:48,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196814970] [2023-12-22 09:16:48,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 09:16:48,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 09:16:48,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 09:16:48,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 09:16:48,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 09:16:48,541 INFO L87 Difference]: Start difference. First operand 1149 states and 1443 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 09:16:55,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 09:16:55,648 INFO L93 Difference]: Finished difference Result 1947 states and 2631 transitions. [2023-12-22 09:16:55,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 09:16:55,656 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 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 169 [2023-12-22 09:16:55,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 09:16:55,660 INFO L225 Difference]: With dead ends: 1947 [2023-12-22 09:16:55,660 INFO L226 Difference]: Without dead ends: 1541 [2023-12-22 09:16:55,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 167 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 09:16:55,662 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 192 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2023-12-22 09:16:55,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 319 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2023-12-22 09:16:55,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1541 states. [2023-12-22 09:16:55,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1541 to 1538. [2023-12-22 09:16:55,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1538 states, 1537 states have (on average 1.2713077423552375) internal successors, (1954), 1537 states have internal predecessors, (1954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 09:16:55,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1538 states to 1538 states and 1954 transitions. [2023-12-22 09:16:55,681 INFO L78 Accepts]: Start accepts. Automaton has 1538 states and 1954 transitions. Word has length 169 [2023-12-22 09:16:55,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 09:16:55,682 INFO L495 AbstractCegarLoop]: Abstraction has 1538 states and 1954 transitions. [2023-12-22 09:16:55,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 09:16:55,682 INFO L276 IsEmpty]: Start isEmpty. Operand 1538 states and 1954 transitions. [2023-12-22 09:16:55,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2023-12-22 09:16:55,684 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 09:16:55,684 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 09:16:55,690 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 09:16:55,890 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 09:16:55,891 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 09:16:55,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 09:16:55,891 INFO L85 PathProgramCache]: Analyzing trace with hash 91351496, now seen corresponding path program 1 times [2023-12-22 09:16:55,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 09:16:55,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2113972146] [2023-12-22 09:16:55,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 09:16:55,892 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 09:16:55,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 09:16:55,893 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 09:16:55,896 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 09:16:56,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 09:16:56,034 INFO L262 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 09:16:56,037 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 09:16:56,145 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 09:16:56,145 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 09:16:56,145 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 09:16:56,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2113972146] [2023-12-22 09:16:56,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2113972146] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 09:16:56,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 09:16:56,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 09:16:56,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653039640] [2023-12-22 09:16:56,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 09:16:56,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 09:16:56,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 09:16:56,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 09:16:56,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 09:16:56,147 INFO L87 Difference]: Start difference. First operand 1538 states and 1954 transitions. Second operand has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 09:17:03,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 09:17:03,279 INFO L93 Difference]: Finished difference Result 3278 states and 4344 transitions. [2023-12-22 09:17:03,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 09:17:03,287 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 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 222 [2023-12-22 09:17:03,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 09:17:03,305 INFO L225 Difference]: With dead ends: 3278 [2023-12-22 09:17:03,305 INFO L226 Difference]: Without dead ends: 2109 [2023-12-22 09:17:03,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 220 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 09:17:03,307 INFO L413 NwaCegarLoop]: 317 mSDtfsCounter, 136 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2023-12-22 09:17:03,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 337 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2023-12-22 09:17:03,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2109 states. [2023-12-22 09:17:03,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2109 to 2096. [2023-12-22 09:17:03,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2096 states, 2095 states have (on average 1.2534606205250596) internal successors, (2626), 2095 states have internal predecessors, (2626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 09:17:03,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2096 states to 2096 states and 2626 transitions. [2023-12-22 09:17:03,333 INFO L78 Accepts]: Start accepts. Automaton has 2096 states and 2626 transitions. Word has length 222 [2023-12-22 09:17:03,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 09:17:03,334 INFO L495 AbstractCegarLoop]: Abstraction has 2096 states and 2626 transitions. [2023-12-22 09:17:03,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 09:17:03,335 INFO L276 IsEmpty]: Start isEmpty. Operand 2096 states and 2626 transitions. [2023-12-22 09:17:03,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2023-12-22 09:17:03,361 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 09:17:03,361 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2023-12-22 09:17:03,366 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 09:17:03,566 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 09:17:03,567 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 09:17:03,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 09:17:03,567 INFO L85 PathProgramCache]: Analyzing trace with hash 781021224, now seen corresponding path program 1 times [2023-12-22 09:17:03,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 09:17:03,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [999664776] [2023-12-22 09:17:03,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 09:17:03,569 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 09:17:03,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 09:17:03,570 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 09:17:03,571 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 09:17:03,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 09:17:03,699 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-22 09:17:03,701 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 09:17:04,537 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 81 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 09:17:04,537 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 09:17:06,211 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 09:17:06,211 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 09:17:06,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [999664776] [2023-12-22 09:17:06,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [999664776] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-22 09:17:06,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-22 09:17:06,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-22 09:17:06,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663094997] [2023-12-22 09:17:06,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 09:17:06,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 09:17:06,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 09:17:06,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 09:17:06,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-22 09:17:06,213 INFO L87 Difference]: Start difference. First operand 2096 states and 2626 transitions. Second operand has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 09:17:20,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 09:17:20,524 INFO L93 Difference]: Finished difference Result 4187 states and 5462 transitions. [2023-12-22 09:17:20,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 09:17:20,531 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 223 [2023-12-22 09:17:20,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 09:17:20,539 INFO L225 Difference]: With dead ends: 4187 [2023-12-22 09:17:20,539 INFO L226 Difference]: Without dead ends: 3018 [2023-12-22 09:17:20,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 441 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-22 09:17:20,542 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 149 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.3s IncrementalHoareTripleChecker+Time [2023-12-22 09:17:20,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 47 Invalid, 747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 14.3s Time] [2023-12-22 09:17:20,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3018 states. [2023-12-22 09:17:20,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3018 to 3018. [2023-12-22 09:17:20,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3018 states, 3017 states have (on average 1.269804441498177) internal successors, (3831), 3017 states have internal predecessors, (3831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 09:17:20,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3018 states to 3018 states and 3831 transitions. [2023-12-22 09:17:20,581 INFO L78 Accepts]: Start accepts. Automaton has 3018 states and 3831 transitions. Word has length 223 [2023-12-22 09:17:20,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 09:17:20,582 INFO L495 AbstractCegarLoop]: Abstraction has 3018 states and 3831 transitions. [2023-12-22 09:17:20,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 09:17:20,582 INFO L276 IsEmpty]: Start isEmpty. Operand 3018 states and 3831 transitions. [2023-12-22 09:17:20,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2023-12-22 09:17:20,584 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 09:17:20,584 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-22 09:17:20,590 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 09:17:20,789 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 09:17:20,792 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 09:17:20,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 09:17:20,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1526388838, now seen corresponding path program 1 times [2023-12-22 09:17:20,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 09:17:20,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1405791045] [2023-12-22 09:17:20,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 09:17:20,794 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 09:17:20,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 09:17:20,795 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 09:17:20,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-22 09:17:20,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 09:17:20,903 INFO L262 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-22 09:17:20,906 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 09:17:23,015 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 0 proven. 160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 09:17:23,015 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 09:18:01,128 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 79 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 09:18:01,128 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 09:18:01,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1405791045] [2023-12-22 09:18:01,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1405791045] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 09:18:01,128 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 09:18:01,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-12-22 09:18:01,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168601554] [2023-12-22 09:18:01,128 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 09:18:01,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-22 09:18:01,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 09:18:01,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-22 09:18:01,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-12-22 09:18:01,130 INFO L87 Difference]: Start difference. First operand 3018 states and 3831 transitions. Second operand has 9 states, 9 states have (on average 48.55555555555556) internal successors, (437), 8 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 09:18:09,562 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 09:18:13,418 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.85s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 09:18:16,237 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 09:18:20,211 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.55s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 09:18:22,584 WARN L539 Checker$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 09:18:25,916 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.33s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 09:18:27,579 WARN L539 Checker$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 09:18:30,688 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 09:18:33,870 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 09:18:40,621 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 09:18:48,206 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 09:18:54,222 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 09:18:59,041 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.76s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 09:19:03,354 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 09:19:04,719 WARN L539 Checker$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 09:19:08,724 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 09:19:16,255 WARN L539 Checker$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 09:19:22,992 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 09:19:27,143 WARN L539 Checker$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 09:19:28,873 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 09:19:36,144 WARN L539 Checker$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 09:19:37,279 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 09:19:40,371 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 09:19:43,883 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.51s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 09:19:51,825 WARN L539 Checker$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 09:19:55,212 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 09:20:00,857 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 09:20:02,849 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 09:20:07,289 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 09:20:11,295 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 09:20:12,973 WARN L539 Checker$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 09:20:16,503 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 09:20:24,102 WARN L539 Checker$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 09:20:26,481 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.38s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 09:20:30,948 WARN L539 Checker$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 09:20:35,434 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 09:20:40,115 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 09:20:41,282 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 09:20:43,289 WARN L539 Checker$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 09:20:46,999 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 09:20:50,189 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 09:20:57,321 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 09:21:06,836 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 09:21:08,300 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 09:21:13,108 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 09:21:19,489 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 09:21:24,651 WARN L539 Checker$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 09:21:26,664 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 09:21:29,307 WARN L539 Checker$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 09:21:36,316 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 09:21:37,747 WARN L539 Checker$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 09:21:43,215 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 09:21:47,221 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 09:21:50,299 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 09:21:52,072 WARN L539 Checker$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 09:21:54,173 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 09:21:56,533 WARN L539 Checker$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 09:21:59,246 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.53s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 09:22:05,605 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 09:22:06,833 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 09:22:13,342 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 09:22:14,582 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 09:22:19,120 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 09:22:20,582 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 09:22:29,126 WARN L539 Checker$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 09:22:32,597 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 09:22:38,903 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.38s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 09:22:41,120 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 09:22:41,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 09:22:41,912 INFO L93 Difference]: Finished difference Result 9751 states and 13036 transitions. [2023-12-22 09:22:41,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-22 09:22:41,913 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 48.55555555555556) internal successors, (437), 8 states have internal predecessors, (437), 0 states have call successors, (0), 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 234 [2023-12-22 09:22:41,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 09:22:41,928 INFO L225 Difference]: With dead ends: 9751 [2023-12-22 09:22:41,929 INFO L226 Difference]: Without dead ends: 6528 [2023-12-22 09:22:41,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 459 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2023-12-22 09:22:41,933 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 2280 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 3225 mSolverCounterSat, 1130 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 263.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2280 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 4360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1130 IncrementalHoareTripleChecker+Valid, 3225 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 278.2s IncrementalHoareTripleChecker+Time [2023-12-22 09:22:41,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2280 Valid, 176 Invalid, 4360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1130 Valid, 3225 Invalid, 5 Unknown, 0 Unchecked, 278.2s Time] [2023-12-22 09:22:41,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6528 states. [2023-12-22 09:22:41,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6528 to 4668. [2023-12-22 09:22:41,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4668 states, 4667 states have (on average 1.2453396185986716) internal successors, (5812), 4667 states have internal predecessors, (5812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 09:22:42,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4668 states to 4668 states and 5812 transitions. [2023-12-22 09:22:42,002 INFO L78 Accepts]: Start accepts. Automaton has 4668 states and 5812 transitions. Word has length 234 [2023-12-22 09:22:42,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 09:22:42,002 INFO L495 AbstractCegarLoop]: Abstraction has 4668 states and 5812 transitions. [2023-12-22 09:22:42,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 48.55555555555556) internal successors, (437), 8 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 09:22:42,003 INFO L276 IsEmpty]: Start isEmpty. Operand 4668 states and 5812 transitions. [2023-12-22 09:22:42,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2023-12-22 09:22:42,006 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 09:22:42,006 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-22 09:22:42,024 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 (9)] Ended with exit code 0 [2023-12-22 09:22:42,210 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 09:22:42,211 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 09:22:42,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 09:22:42,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1104632742, now seen corresponding path program 1 times [2023-12-22 09:22:42,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 09:22:42,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1215808180] [2023-12-22 09:22:42,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 09:22:42,213 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 09:22:42,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 09:22:42,214 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 09:22:42,219 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 09:22:42,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 09:22:42,323 INFO L262 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 09:22:42,326 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 09:22:42,720 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 81 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 09:22:42,721 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 09:22:43,127 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 175 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 09:22:43,127 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 09:22:43,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1215808180] [2023-12-22 09:22:43,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1215808180] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-22 09:22:43,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-22 09:22:43,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-22 09:22:43,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972807417] [2023-12-22 09:22:43,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 09:22:43,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 09:22:43,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 09:22:43,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 09:22:43,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-22 09:22:43,129 INFO L87 Difference]: Start difference. First operand 4668 states and 5812 transitions. Second operand has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 09:23:07,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 09:23:07,999 INFO L93 Difference]: Finished difference Result 11551 states and 14666 transitions. [2023-12-22 09:23:08,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 09:23:08,003 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 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 264 [2023-12-22 09:23:08,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 09:23:08,019 INFO L225 Difference]: With dead ends: 11551 [2023-12-22 09:23:08,019 INFO L226 Difference]: Without dead ends: 7436 [2023-12-22 09:23:08,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 526 GetRequests, 523 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-22 09:23:08,025 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 127 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.8s IncrementalHoareTripleChecker+Time [2023-12-22 09:23:08,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 108 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 544 Invalid, 0 Unknown, 0 Unchecked, 24.8s Time] [2023-12-22 09:23:08,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7436 states. [2023-12-22 09:23:08,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7436 to 7246. [2023-12-22 09:23:08,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7246 states, 7245 states have (on average 1.2472049689440994) internal successors, (9036), 7245 states have internal predecessors, (9036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 09:23:08,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7246 states to 7246 states and 9036 transitions. [2023-12-22 09:23:08,136 INFO L78 Accepts]: Start accepts. Automaton has 7246 states and 9036 transitions. Word has length 264 [2023-12-22 09:23:08,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 09:23:08,136 INFO L495 AbstractCegarLoop]: Abstraction has 7246 states and 9036 transitions. [2023-12-22 09:23:08,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 09:23:08,136 INFO L276 IsEmpty]: Start isEmpty. Operand 7246 states and 9036 transitions. [2023-12-22 09:23:08,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2023-12-22 09:23:08,140 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 09:23:08,140 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-22 09:23:08,146 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 09:23:08,344 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 09:23:08,345 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 09:23:08,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 09:23:08,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1393376392, now seen corresponding path program 1 times [2023-12-22 09:23:08,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 09:23:08,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [353605123] [2023-12-22 09:23:08,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 09:23:08,347 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 09:23:08,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 09:23:08,348 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 09:23:08,349 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 09:23:08,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 09:23:08,442 INFO L262 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 09:23:08,445 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 09:23:08,791 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 81 proven. 103 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 09:23:08,791 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 09:23:09,155 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 09:23:09,155 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 09:23:09,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [353605123] [2023-12-22 09:23:09,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [353605123] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-22 09:23:09,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-22 09:23:09,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-22 09:23:09,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5948895] [2023-12-22 09:23:09,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 09:23:09,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 09:23:09,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 09:23:09,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 09:23:09,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-22 09:23:09,157 INFO L87 Difference]: Start difference. First operand 7246 states and 9036 transitions. Second operand has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 09:23:17,812 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 09:23:26,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 09:23:26,492 INFO L93 Difference]: Finished difference Result 17803 states and 22370 transitions. [2023-12-22 09:23:26,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 09:23:26,493 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 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 273 [2023-12-22 09:23:26,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 09:23:26,513 INFO L225 Difference]: With dead ends: 17803 [2023-12-22 09:23:26,513 INFO L226 Difference]: Without dead ends: 11110 [2023-12-22 09:23:26,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 544 GetRequests, 541 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-22 09:23:26,519 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 107 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.2s IncrementalHoareTripleChecker+Time [2023-12-22 09:23:26,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 318 Invalid, 650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 17.2s Time] [2023-12-22 09:23:26,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11110 states. [2023-12-22 09:23:26,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11110 to 11110. [2023-12-22 09:23:26,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11110 states, 11109 states have (on average 1.1884057971014492) internal successors, (13202), 11109 states have internal predecessors, (13202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 09:23:26,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11110 states to 11110 states and 13202 transitions. [2023-12-22 09:23:26,645 INFO L78 Accepts]: Start accepts. Automaton has 11110 states and 13202 transitions. Word has length 273 [2023-12-22 09:23:26,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 09:23:26,645 INFO L495 AbstractCegarLoop]: Abstraction has 11110 states and 13202 transitions. [2023-12-22 09:23:26,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 09:23:26,645 INFO L276 IsEmpty]: Start isEmpty. Operand 11110 states and 13202 transitions. [2023-12-22 09:23:26,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2023-12-22 09:23:26,652 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 09:23:26,653 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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 09:23:26,659 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 09:23:26,859 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 09:23:26,859 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 09:23:26,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 09:23:26,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1190966348, now seen corresponding path program 1 times [2023-12-22 09:23:26,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 09:23:26,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1037892401] [2023-12-22 09:23:26,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 09:23:26,861 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 09:23:26,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 09:23:26,863 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 09:23:26,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-22 09:23:27,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 09:23:27,013 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-22 09:23:27,016 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 09:23:27,534 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 122 proven. 266 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 09:23:27,534 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 09:23:34,166 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 388 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 09:23:34,166 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 09:23:34,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1037892401] [2023-12-22 09:23:34,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1037892401] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-22 09:23:34,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-22 09:23:34,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2023-12-22 09:23:34,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777097600] [2023-12-22 09:23:34,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 09:23:34,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 09:23:34,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 09:23:34,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 09:23:34,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-22 09:23:34,168 INFO L87 Difference]: Start difference. First operand 11110 states and 13202 transitions. Second operand has 4 states, 4 states have (on average 87.5) internal successors, (350), 4 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 09:23:49,849 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 09:23:51,266 WARN L539 Checker$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 09:23:55,406 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 09:24:09,356 WARN L539 Checker$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 09:24:11,230 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 09:24:30,578 WARN L539 Checker$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 09:24:36,660 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 09:24:42,026 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 09:24:46,256 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 09:25:15,157 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 09:25:23,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 09:25:23,327 INFO L93 Difference]: Finished difference Result 25546 states and 30633 transitions. [2023-12-22 09:25:23,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 09:25:23,346 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 87.5) internal successors, (350), 4 states have internal predecessors, (350), 0 states have call successors, (0), 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 350 [2023-12-22 09:25:23,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 09:25:23,367 INFO L225 Difference]: With dead ends: 25546 [2023-12-22 09:25:23,367 INFO L226 Difference]: Without dead ends: 14989 [2023-12-22 09:25:23,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 698 GetRequests, 693 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-22 09:25:23,377 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 357 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 838 mSolverCounterSat, 321 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 99.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 1159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 321 IncrementalHoareTripleChecker+Valid, 838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 109.0s IncrementalHoareTripleChecker+Time [2023-12-22 09:25:23,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 57 Invalid, 1159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [321 Valid, 838 Invalid, 0 Unknown, 0 Unchecked, 109.0s Time] [2023-12-22 09:25:23,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14989 states. [2023-12-22 09:25:23,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14989 to 12397. [2023-12-22 09:25:23,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12397 states, 12396 states have (on average 1.1692481445627623) internal successors, (14494), 12396 states have internal predecessors, (14494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 09:25:23,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12397 states to 12397 states and 14494 transitions. [2023-12-22 09:25:23,589 INFO L78 Accepts]: Start accepts. Automaton has 12397 states and 14494 transitions. Word has length 350 [2023-12-22 09:25:23,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 09:25:23,589 INFO L495 AbstractCegarLoop]: Abstraction has 12397 states and 14494 transitions. [2023-12-22 09:25:23,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.5) internal successors, (350), 4 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 09:25:23,590 INFO L276 IsEmpty]: Start isEmpty. Operand 12397 states and 14494 transitions. [2023-12-22 09:25:23,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2023-12-22 09:25:23,598 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 09:25:23,598 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 09:25:23,606 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 09:25:23,804 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 09:25:23,805 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 09:25:23,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 09:25:23,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1490449592, now seen corresponding path program 1 times [2023-12-22 09:25:23,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 09:25:23,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1367272394] [2023-12-22 09:25:23,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 09:25:23,807 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 09:25:23,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 09:25:23,808 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 09:25:23,808 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 09:25:23,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 09:25:23,922 INFO L262 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-22 09:25:23,925 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 09:25:25,832 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 274 proven. 109 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-12-22 09:25:25,833 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 09:25:32,149 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 286 proven. 97 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-12-22 09:25:32,150 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 09:25:32,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1367272394] [2023-12-22 09:25:32,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1367272394] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 09:25:32,150 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 09:25:32,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-12-22 09:25:32,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516879317] [2023-12-22 09:25:32,150 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 09:25:32,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-22 09:25:32,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 09:25:32,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-22 09:25:32,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-12-22 09:25:32,152 INFO L87 Difference]: Start difference. First operand 12397 states and 14494 transitions. Second operand has 8 states, 8 states have (on average 71.5) internal successors, (572), 7 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 09:26:20,148 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 09:26:22,429 WARN L539 Checker$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 09:26:35,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 09:26:35,164 INFO L93 Difference]: Finished difference Result 32407 states and 38285 transitions. [2023-12-22 09:26:35,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-22 09:26:35,167 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 71.5) internal successors, (572), 7 states have internal predecessors, (572), 0 states have call successors, (0), 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 374 [2023-12-22 09:26:35,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 09:26:35,198 INFO L225 Difference]: With dead ends: 32407 [2023-12-22 09:26:35,199 INFO L226 Difference]: Without dead ends: 22369 [2023-12-22 09:26:35,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 748 GetRequests, 740 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-22 09:26:35,206 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 720 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 2462 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 57.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 720 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 2786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 2462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 62.5s IncrementalHoareTripleChecker+Time [2023-12-22 09:26:35,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [720 Valid, 132 Invalid, 2786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [324 Valid, 2462 Invalid, 0 Unknown, 0 Unchecked, 62.5s Time] [2023-12-22 09:26:35,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22369 states. [2023-12-22 09:26:35,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22369 to 21070. [2023-12-22 09:26:35,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21070 states, 21069 states have (on average 1.162798424225165) internal successors, (24499), 21069 states have internal predecessors, (24499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 09:26:35,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21070 states to 21070 states and 24499 transitions. [2023-12-22 09:26:35,511 INFO L78 Accepts]: Start accepts. Automaton has 21070 states and 24499 transitions. Word has length 374 [2023-12-22 09:26:35,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 09:26:35,511 INFO L495 AbstractCegarLoop]: Abstraction has 21070 states and 24499 transitions. [2023-12-22 09:26:35,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 71.5) internal successors, (572), 7 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 09:26:35,511 INFO L276 IsEmpty]: Start isEmpty. Operand 21070 states and 24499 transitions. [2023-12-22 09:26:35,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2023-12-22 09:26:35,518 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 09:26:35,518 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 09:26:35,522 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 09:26:35,722 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 09:26:35,722 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 09:26:35,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 09:26:35,723 INFO L85 PathProgramCache]: Analyzing trace with hash -764028729, now seen corresponding path program 1 times [2023-12-22 09:26:35,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 09:26:35,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1553707211] [2023-12-22 09:26:35,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 09:26:35,725 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 09:26:35,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 09:26:35,726 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 09:26:35,728 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 09:26:35,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 09:26:35,883 INFO L262 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-22 09:26:35,940 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 09:26:38,874 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 280 proven. 127 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-22 09:26:38,874 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 09:28:18,399 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 391 proven. 16 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-22 09:28:18,399 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 09:28:18,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1553707211] [2023-12-22 09:28:18,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1553707211] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 09:28:18,400 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 09:28:18,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-12-22 09:28:18,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575179271] [2023-12-22 09:28:18,400 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 09:28:18,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-22 09:28:18,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 09:28:18,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-22 09:28:18,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-22 09:28:18,401 INFO L87 Difference]: Start difference. First operand 21070 states and 24499 transitions. Second operand has 8 states, 8 states have (on average 73.75) internal successors, (590), 7 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 09:28:57,566 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 09:29:14,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 09:29:19,739 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 09:29:22,362 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.58s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 09:29:25,936 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 09:29:28,105 WARN L539 Checker$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 09:29:37,268 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 09:29:38,761 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 09:29:47,931 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.32s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 09:29:55,105 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 09:29:56,157 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 09:29:58,421 WARN L539 Checker$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 09:30:06,300 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 09:30:10,509 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 09:30:16,304 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 09:30:20,554 WARN L539 Checker$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 09:30:22,596 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 09:30:25,413 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.39s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 09:30:30,569 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.59s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 09:30:35,580 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 09:30:38,854 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 09:30:41,838 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 09:30:48,784 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 09:30:50,903 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] Received shutdown request... [2023-12-22 09:30:51,903 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 09:30:51,904 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 (14)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-22 09:30:51,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-22 09:30:51,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 757 GetRequests, 750 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-22 09:30:51,972 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 317 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 2105 mSolverCounterSat, 54 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 136.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 2165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 2105 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 152.1s IncrementalHoareTripleChecker+Time [2023-12-22 09:30:51,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [317 Valid, 129 Invalid, 2165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 2105 Invalid, 6 Unknown, 0 Unchecked, 152.1s Time] [2023-12-22 09:30:51,973 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-22 09:30:51,981 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 09:30:52,178 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 09:30:52,180 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (21070states) and FLOYD_HOARE automaton (currently 8 states, 8 states before enhancement),while ReachableStatesComputation was computing reachable states (5230 states constructed, input type IntersectNwa). [2023-12-22 09:30:52,183 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 09:30:52,185 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-22 09:30:52,186 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 09:30:52 BoogieIcfgContainer [2023-12-22 09:30:52,186 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-22 09:30:52,186 INFO L158 Benchmark]: Toolchain (without parser) took 875568.40ms. Allocated memory was 269.5MB in the beginning and 327.2MB in the end (delta: 57.7MB). Free memory was 222.5MB in the beginning and 162.8MB in the end (delta: 59.7MB). Peak memory consumption was 215.4MB. Max. memory is 8.0GB. [2023-12-22 09:30:52,186 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 208.7MB. Free memory is still 158.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-22 09:30:52,186 INFO L158 Benchmark]: CACSL2BoogieTranslator took 588.78ms. Allocated memory is still 269.5MB. Free memory was 222.5MB in the beginning and 226.8MB in the end (delta: -4.3MB). Peak memory consumption was 55.0MB. Max. memory is 8.0GB. [2023-12-22 09:30:52,186 INFO L158 Benchmark]: Boogie Procedure Inliner took 78.46ms. Allocated memory is still 269.5MB. Free memory was 226.8MB in the beginning and 217.9MB in the end (delta: 8.9MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2023-12-22 09:30:52,187 INFO L158 Benchmark]: Boogie Preprocessor took 124.75ms. Allocated memory is still 269.5MB. Free memory was 217.9MB in the beginning and 207.9MB in the end (delta: 10.0MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2023-12-22 09:30:52,187 INFO L158 Benchmark]: RCFGBuilder took 6269.66ms. Allocated memory is still 269.5MB. Free memory was 207.9MB in the beginning and 140.6MB in the end (delta: 67.3MB). Peak memory consumption was 92.5MB. Max. memory is 8.0GB. [2023-12-22 09:30:52,187 INFO L158 Benchmark]: TraceAbstraction took 868501.41ms. Allocated memory was 269.5MB in the beginning and 327.2MB in the end (delta: 57.7MB). Free memory was 140.1MB in the beginning and 162.8MB in the end (delta: -22.8MB). Peak memory consumption was 131.9MB. Max. memory is 8.0GB. [2023-12-22 09:30:52,188 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 208.7MB. Free memory is still 158.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 588.78ms. Allocated memory is still 269.5MB. Free memory was 222.5MB in the beginning and 226.8MB in the end (delta: -4.3MB). Peak memory consumption was 55.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 78.46ms. Allocated memory is still 269.5MB. Free memory was 226.8MB in the beginning and 217.9MB in the end (delta: 8.9MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 124.75ms. Allocated memory is still 269.5MB. Free memory was 217.9MB in the beginning and 207.9MB in the end (delta: 10.0MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * RCFGBuilder took 6269.66ms. Allocated memory is still 269.5MB. Free memory was 207.9MB in the beginning and 140.6MB in the end (delta: 67.3MB). Peak memory consumption was 92.5MB. Max. memory is 8.0GB. * TraceAbstraction took 868501.41ms. Allocated memory was 269.5MB in the beginning and 327.2MB in the end (delta: 57.7MB). Free memory was 140.1MB in the beginning and 162.8MB in the end (delta: -22.8MB). Peak memory consumption was 131.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 145]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 145). Cancelled while NwaCegarLoop was constructing difference of abstraction (21070states) and FLOYD_HOARE automaton (currently 8 states, 8 states before enhancement),while ReachableStatesComputation was computing reachable states (5230 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 221 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 868.5s, OverallIterations: 13, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 700.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 11 mSolverCounterUnknown, 4807 SdHoareTripleChecker+Valid, 695.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4807 mSDsluCounter, 2508 SdHoareTripleChecker+Invalid, 640.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 476 mSDsCounter, 2696 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 13006 IncrementalHoareTripleChecker+Invalid, 15713 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2696 mSolverCounterUnsat, 2032 mSDtfsCounter, 13006 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4888 GetRequests, 4839 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 7.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21070occurred in iteration=12, InterpolantAutomatonStates: 54, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 12 MinimizatonAttempts, 5970 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 162.7s InterpolantComputationTime, 2800 NumberOfCodeBlocks, 2800 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 4877 ConstructedInterpolants, 0 QuantifiedInterpolants, 32797 SizeOfPredicates, 9 NumberOfNonLiveVariables, 3464 ConjunctsInSsa, 56 ConjunctsInUnsatCore, 20 InterpolantComputations, 10 PerfectInterpolantSequences, 2947/4068 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