/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/bitvector/soft_float_4-2a.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 21:30:50,811 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 21:30:50,878 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-21 21:30:50,883 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 21:30:50,883 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 21:30:50,906 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 21:30:50,906 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 21:30:50,907 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 21:30:50,907 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 21:30:50,910 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 21:30:50,910 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 21:30:50,910 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 21:30:50,911 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 21:30:50,912 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 21:30:50,912 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 21:30:50,912 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 21:30:50,912 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 21:30:50,913 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 21:30:50,913 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 21:30:50,914 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 21:30:50,914 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 21:30:50,914 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 21:30:50,914 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 21:30:50,914 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-21 21:30:50,914 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-21 21:30:50,915 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 21:30:50,915 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-21 21:30:50,915 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 21:30:50,915 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 21:30:50,915 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 21:30:50,916 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 21:30:50,916 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 21:30:50,916 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 21:30:50,916 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 21:30:50,916 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 21:30:50,916 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 21:30:50,917 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 21:30:50,917 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 21:30:50,917 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-21 21:30:50,917 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-21 21:30:50,917 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 21:30:50,917 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 21:30:50,918 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 21:30:50,918 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 21:30:50,918 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 21:30:50,918 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-21 21:30:50,918 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-21 21:30:51,115 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 21:30:51,140 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 21:30:51,142 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 21:30:51,143 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 21:30:51,146 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 21:30:51,147 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/soft_float_4-2a.c.cil.c [2023-12-21 21:30:52,307 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 21:30:52,486 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 21:30:52,487 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector/soft_float_4-2a.c.cil.c [2023-12-21 21:30:52,497 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfa9f3206/cb35c30fdfaa43afab248f69104c940b/FLAGac92e19fe [2023-12-21 21:30:52,507 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfa9f3206/cb35c30fdfaa43afab248f69104c940b [2023-12-21 21:30:52,509 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 21:30:52,511 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 21:30:52,513 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 21:30:52,513 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 21:30:52,516 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 21:30:52,517 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 09:30:52" (1/1) ... [2023-12-21 21:30:52,517 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34efd3ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:30:52, skipping insertion in model container [2023-12-21 21:30:52,517 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 09:30:52" (1/1) ... [2023-12-21 21:30:52,552 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 21:30:52,668 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector/soft_float_4-2a.c.cil.c[755,768] [2023-12-21 21:30:52,712 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 21:30:52,721 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 21:30:52,729 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector/soft_float_4-2a.c.cil.c[755,768] [2023-12-21 21:30:52,746 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 21:30:52,756 INFO L206 MainTranslator]: Completed translation [2023-12-21 21:30:52,756 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:30:52 WrapperNode [2023-12-21 21:30:52,757 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 21:30:52,757 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 21:30:52,757 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 21:30:52,758 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 21:30:52,763 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:30:52" (1/1) ... [2023-12-21 21:30:52,769 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:30:52" (1/1) ... [2023-12-21 21:30:52,785 INFO L138 Inliner]: procedures = 17, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 54 [2023-12-21 21:30:52,786 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 21:30:52,786 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 21:30:52,786 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 21:30:52,786 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 21:30:52,794 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:30:52" (1/1) ... [2023-12-21 21:30:52,794 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:30:52" (1/1) ... [2023-12-21 21:30:52,797 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:30:52" (1/1) ... [2023-12-21 21:30:52,805 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]. [2023-12-21 21:30:52,806 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:30:52" (1/1) ... [2023-12-21 21:30:52,806 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:30:52" (1/1) ... [2023-12-21 21:30:52,812 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:30:52" (1/1) ... [2023-12-21 21:30:52,815 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:30:52" (1/1) ... [2023-12-21 21:30:52,817 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:30:52" (1/1) ... [2023-12-21 21:30:52,817 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:30:52" (1/1) ... [2023-12-21 21:30:52,819 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 21:30:52,820 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 21:30:52,820 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 21:30:52,820 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 21:30:52,821 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:30:52" (1/1) ... [2023-12-21 21:30:52,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 21:30:52,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 21:30:52,853 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) [2023-12-21 21:30:52,863 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 [2023-12-21 21:30:52,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 21:30:52,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-21 21:30:52,879 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2023-12-21 21:30:52,879 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2023-12-21 21:30:52,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 21:30:52,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 21:30:52,879 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2023-12-21 21:30:52,879 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2023-12-21 21:30:52,879 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-21 21:30:52,880 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-21 21:30:52,930 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 21:30:52,932 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 21:30:53,157 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 21:30:53,194 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 21:30:53,194 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-21 21:30:53,194 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 09:30:53 BoogieIcfgContainer [2023-12-21 21:30:53,194 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 21:30:53,196 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 21:30:53,196 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 21:30:53,199 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 21:30:53,199 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 09:30:52" (1/3) ... [2023-12-21 21:30:53,200 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30dc74b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 09:30:53, skipping insertion in model container [2023-12-21 21:30:53,200 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:30:52" (2/3) ... [2023-12-21 21:30:53,200 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30dc74b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 09:30:53, skipping insertion in model container [2023-12-21 21:30:53,201 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 09:30:53" (3/3) ... [2023-12-21 21:30:53,202 INFO L112 eAbstractionObserver]: Analyzing ICFG soft_float_4-2a.c.cil.c [2023-12-21 21:30:53,215 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 21:30:53,215 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 21:30:53,255 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 21:30:53,261 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;@34b6b14f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 21:30:53,261 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 21:30:53,268 INFO L276 IsEmpty]: Start isEmpty. Operand has 49 states, 36 states have (on average 1.5555555555555556) internal successors, (56), 37 states have internal predecessors, (56), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-21 21:30:53,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-21 21:30:53,275 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:30:53,277 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:30:53,277 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:30:53,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:30:53,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1974951318, now seen corresponding path program 1 times [2023-12-21 21:30:53,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:30:53,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2090341086] [2023-12-21 21:30:53,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:30:53,291 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 [2023-12-21 21:30:53,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:30:53,294 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) [2023-12-21 21:30:53,304 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 [2023-12-21 21:30:53,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:30:53,394 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-21 21:30:53,399 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:30:53,541 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-21 21:30:53,541 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:30:53,542 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:30:53,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2090341086] [2023-12-21 21:30:53,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2090341086] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:30:53,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:30:53,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 21:30:53,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109081371] [2023-12-21 21:30:53,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:30:53,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 21:30:53,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:30:53,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 21:30:53,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-21 21:30:53,573 INFO L87 Difference]: Start difference. First operand has 49 states, 36 states have (on average 1.5555555555555556) internal successors, (56), 37 states have internal predecessors, (56), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 8 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-21 21:30:53,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:30:53,699 INFO L93 Difference]: Finished difference Result 115 states and 181 transitions. [2023-12-21 21:30:53,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 21:30:53,701 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 27 [2023-12-21 21:30:53,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:30:53,707 INFO L225 Difference]: With dead ends: 115 [2023-12-21 21:30:53,707 INFO L226 Difference]: Without dead ends: 65 [2023-12-21 21:30:53,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-21 21:30:53,712 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 16 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:30:53,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 393 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:30:53,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-12-21 21:30:53,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 56. [2023-12-21 21:30:53,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 41 states have (on average 1.3414634146341464) internal successors, (55), 43 states have internal predecessors, (55), 9 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (11), 8 states have call predecessors, (11), 8 states have call successors, (11) [2023-12-21 21:30:53,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 75 transitions. [2023-12-21 21:30:53,742 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 75 transitions. Word has length 27 [2023-12-21 21:30:53,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:30:53,742 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 75 transitions. [2023-12-21 21:30:53,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-21 21:30:53,743 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 75 transitions. [2023-12-21 21:30:53,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-21 21:30:53,744 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:30:53,744 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:30:53,748 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 [2023-12-21 21:30:53,948 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 [2023-12-21 21:30:53,948 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:30:53,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:30:53,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1701845995, now seen corresponding path program 1 times [2023-12-21 21:30:53,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:30:53,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [945914798] [2023-12-21 21:30:53,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:30:53,950 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 [2023-12-21 21:30:53,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:30:53,951 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) [2023-12-21 21:30:53,970 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 [2023-12-21 21:30:54,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:30:54,020 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-21 21:30:54,023 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:30:54,107 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-21 21:30:54,107 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 21:30:54,171 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-21 21:30:54,171 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:30:54,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [945914798] [2023-12-21 21:30:54,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [945914798] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 21:30:54,171 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 21:30:54,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2023-12-21 21:30:54,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313733817] [2023-12-21 21:30:54,172 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 21:30:54,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 21:30:54,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:30:54,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 21:30:54,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-21 21:30:54,174 INFO L87 Difference]: Start difference. First operand 56 states and 75 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-21 21:30:54,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:30:54,302 INFO L93 Difference]: Finished difference Result 111 states and 149 transitions. [2023-12-21 21:30:54,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 21:30:54,302 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31 [2023-12-21 21:30:54,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:30:54,304 INFO L225 Difference]: With dead ends: 111 [2023-12-21 21:30:54,304 INFO L226 Difference]: Without dead ends: 84 [2023-12-21 21:30:54,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-12-21 21:30:54,305 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 21 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:30:54,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 439 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:30:54,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2023-12-21 21:30:54,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 65. [2023-12-21 21:30:54,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 47 states have (on average 1.3191489361702127) internal successors, (62), 49 states have internal predecessors, (62), 11 states have call successors, (11), 5 states have call predecessors, (11), 6 states have return successors, (14), 10 states have call predecessors, (14), 10 states have call successors, (14) [2023-12-21 21:30:54,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 87 transitions. [2023-12-21 21:30:54,314 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 87 transitions. Word has length 31 [2023-12-21 21:30:54,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:30:54,314 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 87 transitions. [2023-12-21 21:30:54,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-21 21:30:54,315 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 87 transitions. [2023-12-21 21:30:54,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-21 21:30:54,315 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:30:54,316 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:30:54,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-21 21:30:54,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:30:54,519 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:30:54,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:30:54,519 INFO L85 PathProgramCache]: Analyzing trace with hash -2061916751, now seen corresponding path program 1 times [2023-12-21 21:30:54,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:30:54,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1771148802] [2023-12-21 21:30:54,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:30:54,520 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 [2023-12-21 21:30:54,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:30:54,521 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) [2023-12-21 21:30:54,529 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 [2023-12-21 21:30:54,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:30:54,567 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-21 21:30:54,570 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:30:54,626 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-21 21:30:54,627 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 21:30:54,676 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-21 21:30:54,676 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:30:54,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1771148802] [2023-12-21 21:30:54,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1771148802] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 21:30:54,679 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 21:30:54,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2023-12-21 21:30:54,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922665886] [2023-12-21 21:30:54,680 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 21:30:54,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 21:30:54,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:30:54,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 21:30:54,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-21 21:30:54,681 INFO L87 Difference]: Start difference. First operand 65 states and 87 transitions. Second operand has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-21 21:30:54,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:30:54,760 INFO L93 Difference]: Finished difference Result 104 states and 139 transitions. [2023-12-21 21:30:54,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 21:30:54,761 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 34 [2023-12-21 21:30:54,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:30:54,766 INFO L225 Difference]: With dead ends: 104 [2023-12-21 21:30:54,766 INFO L226 Difference]: Without dead ends: 81 [2023-12-21 21:30:54,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-21 21:30:54,769 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 13 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 21:30:54,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 402 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 21:30:54,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-12-21 21:30:54,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 74. [2023-12-21 21:30:54,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 53 states have (on average 1.2830188679245282) internal successors, (68), 55 states have internal predecessors, (68), 13 states have call successors, (13), 6 states have call predecessors, (13), 7 states have return successors, (16), 12 states have call predecessors, (16), 12 states have call successors, (16) [2023-12-21 21:30:54,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 97 transitions. [2023-12-21 21:30:54,791 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 97 transitions. Word has length 34 [2023-12-21 21:30:54,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:30:54,792 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 97 transitions. [2023-12-21 21:30:54,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-21 21:30:54,792 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 97 transitions. [2023-12-21 21:30:54,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-21 21:30:54,794 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:30:54,794 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:30:54,814 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 [2023-12-21 21:30:54,998 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 [2023-12-21 21:30:54,999 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:30:55,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:30:55,001 INFO L85 PathProgramCache]: Analyzing trace with hash 922216448, now seen corresponding path program 2 times [2023-12-21 21:30:55,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:30:55,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [37040] [2023-12-21 21:30:55,002 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 21:30:55,002 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 [2023-12-21 21:30:55,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:30:55,004 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) [2023-12-21 21:30:55,031 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 [2023-12-21 21:30:55,040 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-21 21:30:55,041 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 21:30:55,042 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-21 21:30:55,043 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:30:55,128 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-21 21:30:55,128 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:30:55,128 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:30:55,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [37040] [2023-12-21 21:30:55,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [37040] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:30:55,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:30:55,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 21:30:55,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426268207] [2023-12-21 21:30:55,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:30:55,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 21:30:55,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:30:55,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 21:30:55,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 21:30:55,130 INFO L87 Difference]: Start difference. First operand 74 states and 97 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-21 21:30:55,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:30:55,778 INFO L93 Difference]: Finished difference Result 97 states and 127 transitions. [2023-12-21 21:30:55,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 21:30:55,778 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 35 [2023-12-21 21:30:55,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:30:55,780 INFO L225 Difference]: With dead ends: 97 [2023-12-21 21:30:55,780 INFO L226 Difference]: Without dead ends: 95 [2023-12-21 21:30:55,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-21 21:30:55,781 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 28 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 21:30:55,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 288 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 21:30:55,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-12-21 21:30:55,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 80. [2023-12-21 21:30:55,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 57 states have (on average 1.280701754385965) internal successors, (73), 60 states have internal predecessors, (73), 14 states have call successors, (14), 7 states have call predecessors, (14), 8 states have return successors, (17), 12 states have call predecessors, (17), 13 states have call successors, (17) [2023-12-21 21:30:55,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 104 transitions. [2023-12-21 21:30:55,789 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 104 transitions. Word has length 35 [2023-12-21 21:30:55,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:30:55,789 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 104 transitions. [2023-12-21 21:30:55,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-21 21:30:55,790 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 104 transitions. [2023-12-21 21:30:55,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-21 21:30:55,790 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:30:55,791 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:30:55,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-21 21:30:55,993 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 [2023-12-21 21:30:55,993 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:30:55,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:30:55,994 INFO L85 PathProgramCache]: Analyzing trace with hash 979474750, now seen corresponding path program 1 times [2023-12-21 21:30:55,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:30:55,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1239869270] [2023-12-21 21:30:55,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:30:55,995 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 [2023-12-21 21:30:55,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:30:55,996 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) [2023-12-21 21:30:55,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-21 21:30:56,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:30:56,033 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 21:30:56,034 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:30:56,096 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-21 21:30:56,096 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:30:56,096 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:30:56,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1239869270] [2023-12-21 21:30:56,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1239869270] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:30:56,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:30:56,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 21:30:56,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359821783] [2023-12-21 21:30:56,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:30:56,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 21:30:56,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:30:56,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 21:30:56,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 21:30:56,098 INFO L87 Difference]: Start difference. First operand 80 states and 104 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-21 21:30:57,775 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-21 21:30:58,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:30:58,786 INFO L93 Difference]: Finished difference Result 90 states and 115 transitions. [2023-12-21 21:30:58,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 21:30:58,787 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 35 [2023-12-21 21:30:58,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:30:58,788 INFO L225 Difference]: With dead ends: 90 [2023-12-21 21:30:58,788 INFO L226 Difference]: Without dead ends: 88 [2023-12-21 21:30:58,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-21 21:30:58,788 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 28 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-21 21:30:58,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 262 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 57 Invalid, 1 Unknown, 0 Unchecked, 2.7s Time] [2023-12-21 21:30:58,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-12-21 21:30:58,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 78. [2023-12-21 21:30:58,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 56 states have (on average 1.2678571428571428) internal successors, (71), 58 states have internal predecessors, (71), 13 states have call successors, (13), 7 states have call predecessors, (13), 8 states have return successors, (16), 12 states have call predecessors, (16), 12 states have call successors, (16) [2023-12-21 21:30:58,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 100 transitions. [2023-12-21 21:30:58,796 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 100 transitions. Word has length 35 [2023-12-21 21:30:58,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:30:58,796 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 100 transitions. [2023-12-21 21:30:58,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-21 21:30:58,796 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 100 transitions. [2023-12-21 21:30:58,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-21 21:30:58,797 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:30:58,797 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:30:58,806 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 [2023-12-21 21:30:59,000 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 [2023-12-21 21:30:59,000 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:30:59,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:30:59,001 INFO L85 PathProgramCache]: Analyzing trace with hash 539553575, now seen corresponding path program 1 times [2023-12-21 21:30:59,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:30:59,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1003825289] [2023-12-21 21:30:59,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:30:59,001 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 [2023-12-21 21:30:59,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:30:59,002 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) [2023-12-21 21:30:59,005 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 [2023-12-21 21:30:59,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:30:59,037 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-21 21:30:59,042 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:30:59,136 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-21 21:30:59,136 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:30:59,136 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:30:59,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1003825289] [2023-12-21 21:30:59,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1003825289] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:30:59,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:30:59,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-21 21:30:59,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117954467] [2023-12-21 21:30:59,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:30:59,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 21:30:59,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:30:59,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 21:30:59,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-12-21 21:30:59,142 INFO L87 Difference]: Start difference. First operand 78 states and 100 transitions. Second operand has 11 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:30:59,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:30:59,308 INFO L93 Difference]: Finished difference Result 116 states and 153 transitions. [2023-12-21 21:30:59,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 21:30:59,308 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 38 [2023-12-21 21:30:59,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:30:59,309 INFO L225 Difference]: With dead ends: 116 [2023-12-21 21:30:59,309 INFO L226 Difference]: Without dead ends: 109 [2023-12-21 21:30:59,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2023-12-21 21:30:59,310 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 31 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:30:59,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 503 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:30:59,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2023-12-21 21:30:59,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 92. [2023-12-21 21:30:59,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 66 states have (on average 1.2575757575757576) internal successors, (83), 68 states have internal predecessors, (83), 16 states have call successors, (16), 7 states have call predecessors, (16), 9 states have return successors, (22), 16 states have call predecessors, (22), 15 states have call successors, (22) [2023-12-21 21:30:59,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 121 transitions. [2023-12-21 21:30:59,319 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 121 transitions. Word has length 38 [2023-12-21 21:30:59,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:30:59,319 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 121 transitions. [2023-12-21 21:30:59,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:30:59,319 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 121 transitions. [2023-12-21 21:30:59,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-21 21:30:59,320 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:30:59,320 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2023-12-21 21:30:59,334 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-12-21 21:30:59,535 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 [2023-12-21 21:30:59,535 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:30:59,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:30:59,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1568323699, now seen corresponding path program 1 times [2023-12-21 21:30:59,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:30:59,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [137331254] [2023-12-21 21:30:59,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:30:59,536 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 [2023-12-21 21:30:59,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:30:59,537 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) [2023-12-21 21:30:59,538 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 [2023-12-21 21:30:59,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:30:59,570 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-21 21:30:59,572 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:30:59,651 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-21 21:30:59,651 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 21:30:59,761 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-21 21:30:59,761 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:30:59,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [137331254] [2023-12-21 21:30:59,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [137331254] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 21:30:59,762 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 21:30:59,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 14 [2023-12-21 21:30:59,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809440080] [2023-12-21 21:30:59,762 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 21:30:59,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-21 21:30:59,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:30:59,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-21 21:30:59,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-12-21 21:30:59,763 INFO L87 Difference]: Start difference. First operand 92 states and 121 transitions. Second operand has 14 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 12 states have internal predecessors, (29), 4 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2023-12-21 21:30:59,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:30:59,938 INFO L93 Difference]: Finished difference Result 123 states and 161 transitions. [2023-12-21 21:30:59,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 21:30:59,938 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 12 states have internal predecessors, (29), 4 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) Word has length 40 [2023-12-21 21:30:59,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:30:59,939 INFO L225 Difference]: With dead ends: 123 [2023-12-21 21:30:59,939 INFO L226 Difference]: Without dead ends: 115 [2023-12-21 21:30:59,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2023-12-21 21:30:59,940 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 31 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:30:59,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 704 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:30:59,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-12-21 21:30:59,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 102. [2023-12-21 21:30:59,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 74 states have (on average 1.2432432432432432) internal successors, (92), 75 states have internal predecessors, (92), 17 states have call successors, (17), 7 states have call predecessors, (17), 10 states have return successors, (24), 19 states have call predecessors, (24), 16 states have call successors, (24) [2023-12-21 21:30:59,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 133 transitions. [2023-12-21 21:30:59,948 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 133 transitions. Word has length 40 [2023-12-21 21:30:59,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:30:59,948 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 133 transitions. [2023-12-21 21:30:59,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 12 states have internal predecessors, (29), 4 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2023-12-21 21:30:59,948 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 133 transitions. [2023-12-21 21:30:59,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-21 21:30:59,949 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:30:59,949 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2023-12-21 21:30:59,952 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 [2023-12-21 21:31:00,152 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 [2023-12-21 21:31:00,152 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:31:00,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:31:00,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1511065397, now seen corresponding path program 1 times [2023-12-21 21:31:00,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:31:00,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1317093546] [2023-12-21 21:31:00,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:31:00,153 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 [2023-12-21 21:31:00,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:31:00,154 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) [2023-12-21 21:31:00,155 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 [2023-12-21 21:31:00,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:31:00,187 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-21 21:31:00,188 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:31:00,215 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-21 21:31:00,216 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:31:00,216 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:31:00,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1317093546] [2023-12-21 21:31:00,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1317093546] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:31:00,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:31:00,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 21:31:00,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151301314] [2023-12-21 21:31:00,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:31:00,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 21:31:00,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:31:00,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 21:31:00,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 21:31:00,217 INFO L87 Difference]: Start difference. First operand 102 states and 133 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-21 21:31:00,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:31:00,277 INFO L93 Difference]: Finished difference Result 110 states and 140 transitions. [2023-12-21 21:31:00,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 21:31:00,277 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 40 [2023-12-21 21:31:00,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:31:00,278 INFO L225 Difference]: With dead ends: 110 [2023-12-21 21:31:00,278 INFO L226 Difference]: Without dead ends: 95 [2023-12-21 21:31:00,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-21 21:31:00,278 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 6 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 21:31:00,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 284 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 21:31:00,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-12-21 21:31:00,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2023-12-21 21:31:00,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 69 states have (on average 1.2318840579710144) internal successors, (85), 71 states have internal predecessors, (85), 15 states have call successors, (15), 7 states have call predecessors, (15), 10 states have return successors, (21), 16 states have call predecessors, (21), 14 states have call successors, (21) [2023-12-21 21:31:00,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 121 transitions. [2023-12-21 21:31:00,284 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 121 transitions. Word has length 40 [2023-12-21 21:31:00,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:31:00,284 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 121 transitions. [2023-12-21 21:31:00,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-21 21:31:00,285 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 121 transitions. [2023-12-21 21:31:00,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-21 21:31:00,285 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:31:00,285 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2023-12-21 21:31:00,308 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 [2023-12-21 21:31:00,488 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 [2023-12-21 21:31:00,488 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:31:00,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:31:00,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1965766502, now seen corresponding path program 1 times [2023-12-21 21:31:00,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:31:00,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [660948522] [2023-12-21 21:31:00,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:31:00,489 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:31:00,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:31:00,490 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) [2023-12-21 21:31:00,506 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 [2023-12-21 21:31:00,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:31:00,535 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-21 21:31:00,536 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:31:00,639 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-21 21:31:00,639 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 21:31:00,931 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-21 21:31:00,931 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:31:00,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [660948522] [2023-12-21 21:31:00,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [660948522] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 21:31:00,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 21:31:00,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2023-12-21 21:31:00,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561828612] [2023-12-21 21:31:00,932 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 21:31:00,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-21 21:31:00,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:31:00,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-21 21:31:00,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=496, Unknown=0, NotChecked=0, Total=552 [2023-12-21 21:31:00,933 INFO L87 Difference]: Start difference. First operand 95 states and 121 transitions. Second operand has 24 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 20 states have internal predecessors, (37), 4 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-21 21:31:01,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:31:01,641 INFO L93 Difference]: Finished difference Result 138 states and 190 transitions. [2023-12-21 21:31:01,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-21 21:31:01,642 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 20 states have internal predecessors, (37), 4 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) Word has length 42 [2023-12-21 21:31:01,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:31:01,643 INFO L225 Difference]: With dead ends: 138 [2023-12-21 21:31:01,643 INFO L226 Difference]: Without dead ends: 104 [2023-12-21 21:31:01,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=199, Invalid=1361, Unknown=0, NotChecked=0, Total=1560 [2023-12-21 21:31:01,644 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 137 mSDsluCounter, 987 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 1052 SdHoareTripleChecker+Invalid, 535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 21:31:01,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 1052 Invalid, 535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 21:31:01,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2023-12-21 21:31:01,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 78. [2023-12-21 21:31:01,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 56 states have (on average 1.2678571428571428) internal successors, (71), 60 states have internal predecessors, (71), 12 states have call successors, (12), 5 states have call predecessors, (12), 9 states have return successors, (24), 12 states have call predecessors, (24), 11 states have call successors, (24) [2023-12-21 21:31:01,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 107 transitions. [2023-12-21 21:31:01,661 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 107 transitions. Word has length 42 [2023-12-21 21:31:01,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:31:01,661 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 107 transitions. [2023-12-21 21:31:01,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 20 states have internal predecessors, (37), 4 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-21 21:31:01,661 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 107 transitions. [2023-12-21 21:31:01,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-21 21:31:01,661 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:31:01,661 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2023-12-21 21:31:01,666 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 [2023-12-21 21:31:01,862 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 [2023-12-21 21:31:01,862 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:31:01,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:31:01,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1432935070, now seen corresponding path program 2 times [2023-12-21 21:31:01,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:31:01,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [685203307] [2023-12-21 21:31:01,863 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 21:31:01,863 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 [2023-12-21 21:31:01,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:31:01,866 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) [2023-12-21 21:31:01,879 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 [2023-12-21 21:31:01,919 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 21:31:01,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 21:31:01,921 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-21 21:31:01,922 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:31:02,023 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-21 21:31:02,023 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 21:31:02,310 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-21 21:31:02,311 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:31:02,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [685203307] [2023-12-21 21:31:02,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [685203307] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 21:31:02,311 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 21:31:02,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2023-12-21 21:31:02,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802082806] [2023-12-21 21:31:02,311 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 21:31:02,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-21 21:31:02,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:31:02,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-21 21:31:02,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=496, Unknown=0, NotChecked=0, Total=552 [2023-12-21 21:31:02,312 INFO L87 Difference]: Start difference. First operand 78 states and 107 transitions. Second operand has 24 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 20 states have internal predecessors, (37), 4 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-21 21:31:02,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:31:02,968 INFO L93 Difference]: Finished difference Result 116 states and 163 transitions. [2023-12-21 21:31:02,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-21 21:31:02,969 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 20 states have internal predecessors, (37), 4 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) Word has length 42 [2023-12-21 21:31:02,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:31:02,970 INFO L225 Difference]: With dead ends: 116 [2023-12-21 21:31:02,970 INFO L226 Difference]: Without dead ends: 105 [2023-12-21 21:31:02,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=184, Invalid=1298, Unknown=0, NotChecked=0, Total=1482 [2023-12-21 21:31:02,971 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 135 mSDsluCounter, 845 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 906 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 21:31:02,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 906 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 21:31:02,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2023-12-21 21:31:02,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 80. [2023-12-21 21:31:02,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 57 states have (on average 1.263157894736842) internal successors, (72), 61 states have internal predecessors, (72), 13 states have call successors, (13), 5 states have call predecessors, (13), 9 states have return successors, (27), 13 states have call predecessors, (27), 12 states have call successors, (27) [2023-12-21 21:31:02,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 112 transitions. [2023-12-21 21:31:02,978 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 112 transitions. Word has length 42 [2023-12-21 21:31:02,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:31:02,978 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 112 transitions. [2023-12-21 21:31:02,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 20 states have internal predecessors, (37), 4 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-21 21:31:02,978 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 112 transitions. [2023-12-21 21:31:02,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-21 21:31:02,979 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:31:02,979 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:31:02,982 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 [2023-12-21 21:31:03,182 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 [2023-12-21 21:31:03,182 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:31:03,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:31:03,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1764000766, now seen corresponding path program 1 times [2023-12-21 21:31:03,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:31:03,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2096720616] [2023-12-21 21:31:03,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:31:03,184 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 [2023-12-21 21:31:03,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:31:03,185 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) [2023-12-21 21:31:03,185 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 [2023-12-21 21:31:03,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:31:03,216 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-21 21:31:03,217 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:31:03,279 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-21 21:31:03,279 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 21:31:03,494 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-21 21:31:03,494 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:31:03,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2096720616] [2023-12-21 21:31:03,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2096720616] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 21:31:03,494 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 21:31:03,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2023-12-21 21:31:03,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902690477] [2023-12-21 21:31:03,494 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 21:31:03,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-21 21:31:03,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:31:03,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-21 21:31:03,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2023-12-21 21:31:03,495 INFO L87 Difference]: Start difference. First operand 80 states and 112 transitions. Second operand has 16 states, 12 states have (on average 3.0) internal successors, (36), 14 states have internal predecessors, (36), 4 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-21 21:31:03,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:31:03,727 INFO L93 Difference]: Finished difference Result 111 states and 160 transitions. [2023-12-21 21:31:03,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 21:31:03,728 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 12 states have (on average 3.0) internal successors, (36), 14 states have internal predecessors, (36), 4 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 44 [2023-12-21 21:31:03,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:31:03,728 INFO L225 Difference]: With dead ends: 111 [2023-12-21 21:31:03,728 INFO L226 Difference]: Without dead ends: 100 [2023-12-21 21:31:03,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2023-12-21 21:31:03,729 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 68 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:31:03,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 659 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:31:03,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-12-21 21:31:03,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 82. [2023-12-21 21:31:03,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 58 states have (on average 1.2586206896551724) internal successors, (73), 63 states have internal predecessors, (73), 13 states have call successors, (13), 5 states have call predecessors, (13), 10 states have return successors, (30), 13 states have call predecessors, (30), 12 states have call successors, (30) [2023-12-21 21:31:03,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 116 transitions. [2023-12-21 21:31:03,738 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 116 transitions. Word has length 44 [2023-12-21 21:31:03,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:31:03,738 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 116 transitions. [2023-12-21 21:31:03,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 12 states have (on average 3.0) internal successors, (36), 14 states have internal predecessors, (36), 4 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-21 21:31:03,738 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 116 transitions. [2023-12-21 21:31:03,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-12-21 21:31:03,739 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:31:03,739 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2023-12-21 21:31:03,741 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 (12)] Ended with exit code 0 [2023-12-21 21:31:03,939 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 [2023-12-21 21:31:03,940 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:31:03,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:31:03,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1487703526, now seen corresponding path program 1 times [2023-12-21 21:31:03,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:31:03,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1639706394] [2023-12-21 21:31:03,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:31:03,940 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 [2023-12-21 21:31:03,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:31:03,941 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) [2023-12-21 21:31:03,942 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 [2023-12-21 21:31:03,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:31:03,993 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-21 21:31:03,994 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:31:04,044 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-21 21:31:04,045 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:31:04,045 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:31:04,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1639706394] [2023-12-21 21:31:04,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1639706394] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:31:04,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:31:04,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 21:31:04,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181851322] [2023-12-21 21:31:04,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:31:04,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 21:31:04,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:31:04,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 21:31:04,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-21 21:31:04,046 INFO L87 Difference]: Start difference. First operand 82 states and 116 transitions. Second operand has 9 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-21 21:31:04,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:31:04,135 INFO L93 Difference]: Finished difference Result 133 states and 176 transitions. [2023-12-21 21:31:04,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 21:31:04,136 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 48 [2023-12-21 21:31:04,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:31:04,137 INFO L225 Difference]: With dead ends: 133 [2023-12-21 21:31:04,137 INFO L226 Difference]: Without dead ends: 77 [2023-12-21 21:31:04,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-12-21 21:31:04,139 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 10 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:31:04,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 448 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:31:04,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-12-21 21:31:04,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 75. [2023-12-21 21:31:04,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 53 states have (on average 1.2830188679245282) internal successors, (68), 58 states have internal predecessors, (68), 12 states have call successors, (12), 4 states have call predecessors, (12), 9 states have return successors, (28), 12 states have call predecessors, (28), 11 states have call successors, (28) [2023-12-21 21:31:04,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 108 transitions. [2023-12-21 21:31:04,147 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 108 transitions. Word has length 48 [2023-12-21 21:31:04,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:31:04,147 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 108 transitions. [2023-12-21 21:31:04,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-21 21:31:04,148 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 108 transitions. [2023-12-21 21:31:04,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-21 21:31:04,148 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:31:04,148 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:31:04,168 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 [2023-12-21 21:31:04,350 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 [2023-12-21 21:31:04,351 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:31:04,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:31:04,351 INFO L85 PathProgramCache]: Analyzing trace with hash -114915456, now seen corresponding path program 1 times [2023-12-21 21:31:04,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:31:04,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [134841698] [2023-12-21 21:31:04,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:31:04,352 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 [2023-12-21 21:31:04,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:31:04,353 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) [2023-12-21 21:31:04,365 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 [2023-12-21 21:31:04,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:31:04,388 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 21:31:04,389 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:31:07,051 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-21 21:31:07,051 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:31:07,051 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:31:07,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [134841698] [2023-12-21 21:31:07,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [134841698] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:31:07,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:31:07,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 21:31:07,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911287233] [2023-12-21 21:31:07,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:31:07,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 21:31:07,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:31:07,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 21:31:07,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=36, Unknown=1, NotChecked=0, Total=56 [2023-12-21 21:31:07,052 INFO L87 Difference]: Start difference. First operand 75 states and 108 transitions. Second operand has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-21 21:31:11,165 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-21 21:31:14,311 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-21 21:31:14,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:31:14,326 INFO L93 Difference]: Finished difference Result 85 states and 121 transitions. [2023-12-21 21:31:14,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 21:31:14,326 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 45 [2023-12-21 21:31:14,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:31:14,327 INFO L225 Difference]: With dead ends: 85 [2023-12-21 21:31:14,327 INFO L226 Difference]: Without dead ends: 83 [2023-12-21 21:31:14,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=23, Invalid=48, Unknown=1, NotChecked=0, Total=72 [2023-12-21 21:31:14,327 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 10 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2023-12-21 21:31:14,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 257 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 2 Unknown, 0 Unchecked, 7.3s Time] [2023-12-21 21:31:14,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-12-21 21:31:14,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 80. [2023-12-21 21:31:14,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 56 states have (on average 1.2678571428571428) internal successors, (71), 62 states have internal predecessors, (71), 13 states have call successors, (13), 5 states have call predecessors, (13), 10 states have return successors, (29), 12 states have call predecessors, (29), 12 states have call successors, (29) [2023-12-21 21:31:14,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 113 transitions. [2023-12-21 21:31:14,333 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 113 transitions. Word has length 45 [2023-12-21 21:31:14,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:31:14,333 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 113 transitions. [2023-12-21 21:31:14,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-21 21:31:14,333 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 113 transitions. [2023-12-21 21:31:14,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-21 21:31:14,334 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:31:14,334 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:31:14,346 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2023-12-21 21:31:14,536 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 [2023-12-21 21:31:14,536 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:31:14,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:31:14,537 INFO L85 PathProgramCache]: Analyzing trace with hash 501526360, now seen corresponding path program 1 times [2023-12-21 21:31:14,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:31:14,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [797120251] [2023-12-21 21:31:14,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:31:14,537 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 [2023-12-21 21:31:14,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:31:14,557 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:31:14,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-21 21:31:14,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:31:14,595 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 21:31:14,597 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:31:18,446 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-21 21:31:18,446 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:31:18,446 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:31:18,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [797120251] [2023-12-21 21:31:18,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [797120251] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:31:18,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:31:18,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 21:31:18,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252784290] [2023-12-21 21:31:18,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:31:18,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 21:31:18,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:31:18,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 21:31:18,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-21 21:31:18,448 INFO L87 Difference]: Start difference. First operand 80 states and 113 transitions. Second operand has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-21 21:31:20,466 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-21 21:31:24,079 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.61s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-21 21:31:28,106 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 [0] [2023-12-21 21:31:28,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:31:28,399 INFO L93 Difference]: Finished difference Result 89 states and 124 transitions. [2023-12-21 21:31:28,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 21:31:28,399 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 46 [2023-12-21 21:31:28,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:31:28,400 INFO L225 Difference]: With dead ends: 89 [2023-12-21 21:31:28,400 INFO L226 Difference]: Without dead ends: 85 [2023-12-21 21:31:28,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-21 21:31:28,400 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 12 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2023-12-21 21:31:28,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 263 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 3 Unknown, 0 Unchecked, 9.9s Time] [2023-12-21 21:31:28,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-12-21 21:31:28,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 77. [2023-12-21 21:31:28,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 55 states have (on average 1.2545454545454546) internal successors, (69), 59 states have internal predecessors, (69), 12 states have call successors, (12), 5 states have call predecessors, (12), 9 states have return successors, (28), 12 states have call predecessors, (28), 11 states have call successors, (28) [2023-12-21 21:31:28,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 109 transitions. [2023-12-21 21:31:28,405 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 109 transitions. Word has length 46 [2023-12-21 21:31:28,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:31:28,406 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 109 transitions. [2023-12-21 21:31:28,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-21 21:31:28,406 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 109 transitions. [2023-12-21 21:31:28,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-12-21 21:31:28,406 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:31:28,406 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2023-12-21 21:31:28,411 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-12-21 21:31:28,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:31:28,609 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:31:28,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:31:28,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1094043785, now seen corresponding path program 1 times [2023-12-21 21:31:28,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:31:28,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1314685108] [2023-12-21 21:31:28,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:31:28,610 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 [2023-12-21 21:31:28,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:31:28,611 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:31:28,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-21 21:31:28,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:31:28,652 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 21:31:28,653 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:31:28,723 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-21 21:31:28,724 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 21:31:28,837 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-21 21:31:28,837 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:31:28,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1314685108] [2023-12-21 21:31:28,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1314685108] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 21:31:28,837 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 21:31:28,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2023-12-21 21:31:28,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374129272] [2023-12-21 21:31:28,837 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 21:31:28,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 21:31:28,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:31:28,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 21:31:28,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-21 21:31:28,838 INFO L87 Difference]: Start difference. First operand 77 states and 109 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:31:29,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:31:29,027 INFO L93 Difference]: Finished difference Result 100 states and 152 transitions. [2023-12-21 21:31:29,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 21:31:29,028 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 48 [2023-12-21 21:31:29,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:31:29,028 INFO L225 Difference]: With dead ends: 100 [2023-12-21 21:31:29,028 INFO L226 Difference]: Without dead ends: 87 [2023-12-21 21:31:29,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2023-12-21 21:31:29,029 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 86 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:31:29,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 463 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:31:29,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-12-21 21:31:29,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 79. [2023-12-21 21:31:29,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 56 states have (on average 1.25) internal successors, (70), 61 states have internal predecessors, (70), 12 states have call successors, (12), 5 states have call predecessors, (12), 10 states have return successors, (31), 12 states have call predecessors, (31), 11 states have call successors, (31) [2023-12-21 21:31:29,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 113 transitions. [2023-12-21 21:31:29,034 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 113 transitions. Word has length 48 [2023-12-21 21:31:29,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:31:29,034 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 113 transitions. [2023-12-21 21:31:29,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:31:29,035 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 113 transitions. [2023-12-21 21:31:29,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-21 21:31:29,035 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:31:29,035 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2023-12-21 21:31:29,048 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 (16)] Ended with exit code 0 [2023-12-21 21:31:29,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:31:29,241 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:31:29,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:31:29,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1537741673, now seen corresponding path program 1 times [2023-12-21 21:31:29,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:31:29,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [55226545] [2023-12-21 21:31:29,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:31:29,241 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 [2023-12-21 21:31:29,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:31:29,266 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:31:29,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-12-21 21:31:29,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:31:29,407 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 21:31:29,408 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:31:29,481 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-21 21:31:29,481 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 21:31:29,603 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-21 21:31:29,603 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:31:29,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [55226545] [2023-12-21 21:31:29,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [55226545] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 21:31:29,603 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 21:31:29,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2023-12-21 21:31:29,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520944372] [2023-12-21 21:31:29,604 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 21:31:29,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 21:31:29,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:31:29,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 21:31:29,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-21 21:31:29,604 INFO L87 Difference]: Start difference. First operand 79 states and 113 transitions. Second operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-12-21 21:31:29,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:31:29,829 INFO L93 Difference]: Finished difference Result 100 states and 150 transitions. [2023-12-21 21:31:29,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 21:31:29,830 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 57 [2023-12-21 21:31:29,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:31:29,831 INFO L225 Difference]: With dead ends: 100 [2023-12-21 21:31:29,831 INFO L226 Difference]: Without dead ends: 87 [2023-12-21 21:31:29,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-21 21:31:29,831 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 65 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 21:31:29,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 469 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 21:31:29,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-12-21 21:31:29,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 79. [2023-12-21 21:31:29,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 56 states have (on average 1.25) internal successors, (70), 61 states have internal predecessors, (70), 12 states have call successors, (12), 5 states have call predecessors, (12), 10 states have return successors, (30), 12 states have call predecessors, (30), 11 states have call successors, (30) [2023-12-21 21:31:29,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 112 transitions. [2023-12-21 21:31:29,837 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 112 transitions. Word has length 57 [2023-12-21 21:31:29,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:31:29,837 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 112 transitions. [2023-12-21 21:31:29,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-12-21 21:31:29,837 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 112 transitions. [2023-12-21 21:31:29,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-21 21:31:29,838 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:31:29,838 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2023-12-21 21:31:29,841 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-12-21 21:31:30,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:31:30,039 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:31:30,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:31:30,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1468857666, now seen corresponding path program 1 times [2023-12-21 21:31:30,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:31:30,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [672033630] [2023-12-21 21:31:30,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:31:30,039 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 [2023-12-21 21:31:30,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:31:30,040 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:31:30,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-12-21 21:31:30,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:31:30,107 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 21:31:30,108 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:31:30,190 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-21 21:31:30,190 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 21:31:30,306 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-21 21:31:30,306 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:31:30,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [672033630] [2023-12-21 21:31:30,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [672033630] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 21:31:30,306 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 21:31:30,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2023-12-21 21:31:30,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163883405] [2023-12-21 21:31:30,307 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 21:31:30,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 21:31:30,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:31:30,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 21:31:30,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-21 21:31:30,308 INFO L87 Difference]: Start difference. First operand 79 states and 112 transitions. Second operand has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-12-21 21:31:30,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:31:30,498 INFO L93 Difference]: Finished difference Result 98 states and 142 transitions. [2023-12-21 21:31:30,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 21:31:30,499 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 57 [2023-12-21 21:31:30,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:31:30,499 INFO L225 Difference]: With dead ends: 98 [2023-12-21 21:31:30,499 INFO L226 Difference]: Without dead ends: 85 [2023-12-21 21:31:30,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2023-12-21 21:31:30,500 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 90 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:31:30,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 457 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:31:30,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-12-21 21:31:30,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 77. [2023-12-21 21:31:30,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 55 states have (on average 1.2363636363636363) internal successors, (68), 59 states have internal predecessors, (68), 12 states have call successors, (12), 5 states have call predecessors, (12), 9 states have return successors, (27), 12 states have call predecessors, (27), 11 states have call successors, (27) [2023-12-21 21:31:30,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 107 transitions. [2023-12-21 21:31:30,505 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 107 transitions. Word has length 57 [2023-12-21 21:31:30,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:31:30,506 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 107 transitions. [2023-12-21 21:31:30,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-12-21 21:31:30,506 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 107 transitions. [2023-12-21 21:31:30,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-21 21:31:30,508 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:31:30,508 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2023-12-21 21:31:30,513 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2023-12-21 21:31:30,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:31:30,711 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:31:30,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:31:30,711 INFO L85 PathProgramCache]: Analyzing trace with hash -244994597, now seen corresponding path program 1 times [2023-12-21 21:31:30,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:31:30,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [987108828] [2023-12-21 21:31:30,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:31:30,712 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 [2023-12-21 21:31:30,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:31:30,716 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:31:30,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-12-21 21:31:30,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:31:30,756 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 21:31:30,757 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:31:30,806 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-21 21:31:30,806 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 21:31:30,915 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-21 21:31:30,915 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:31:30,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [987108828] [2023-12-21 21:31:30,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [987108828] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 21:31:30,915 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 21:31:30,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2023-12-21 21:31:30,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611887157] [2023-12-21 21:31:30,916 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 21:31:30,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 21:31:30,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:31:30,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 21:31:30,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-21 21:31:30,916 INFO L87 Difference]: Start difference. First operand 77 states and 107 transitions. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-12-21 21:31:31,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:31:31,063 INFO L93 Difference]: Finished difference Result 96 states and 137 transitions. [2023-12-21 21:31:31,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 21:31:31,063 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 59 [2023-12-21 21:31:31,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:31:31,064 INFO L225 Difference]: With dead ends: 96 [2023-12-21 21:31:31,064 INFO L226 Difference]: Without dead ends: 83 [2023-12-21 21:31:31,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-21 21:31:31,065 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 78 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:31:31,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 422 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:31:31,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-12-21 21:31:31,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 75. [2023-12-21 21:31:31,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 54 states have (on average 1.2222222222222223) internal successors, (66), 57 states have internal predecessors, (66), 12 states have call successors, (12), 5 states have call predecessors, (12), 8 states have return successors, (25), 12 states have call predecessors, (25), 11 states have call successors, (25) [2023-12-21 21:31:31,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 103 transitions. [2023-12-21 21:31:31,069 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 103 transitions. Word has length 59 [2023-12-21 21:31:31,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:31:31,070 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 103 transitions. [2023-12-21 21:31:31,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-12-21 21:31:31,070 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 103 transitions. [2023-12-21 21:31:31,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-21 21:31:31,070 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:31:31,070 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2023-12-21 21:31:31,075 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-12-21 21:31:31,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:31:31,276 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:31:31,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:31:31,276 INFO L85 PathProgramCache]: Analyzing trace with hash -557433969, now seen corresponding path program 1 times [2023-12-21 21:31:31,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:31:31,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [934311178] [2023-12-21 21:31:31,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:31:31,276 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 [2023-12-21 21:31:31,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:31:31,277 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:31:31,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-12-21 21:31:31,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:31:31,350 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-21 21:31:31,352 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:31:31,661 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 21:31:31,662 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:31:31,662 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:31:31,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [934311178] [2023-12-21 21:31:31,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [934311178] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:31:31,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:31:31,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-21 21:31:31,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599552651] [2023-12-21 21:31:31,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:31:31,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 21:31:31,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:31:31,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 21:31:31,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-21 21:31:31,664 INFO L87 Difference]: Start difference. First operand 75 states and 103 transitions. Second operand has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-12-21 21:31:32,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:31:32,097 INFO L93 Difference]: Finished difference Result 99 states and 139 transitions. [2023-12-21 21:31:32,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 21:31:32,098 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 66 [2023-12-21 21:31:32,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:31:32,099 INFO L225 Difference]: With dead ends: 99 [2023-12-21 21:31:32,099 INFO L226 Difference]: Without dead ends: 88 [2023-12-21 21:31:32,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2023-12-21 21:31:32,099 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 42 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 21:31:32,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 528 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 21:31:32,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-12-21 21:31:32,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 83. [2023-12-21 21:31:32,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 59 states have (on average 1.2372881355932204) internal successors, (73), 64 states have internal predecessors, (73), 13 states have call successors, (13), 5 states have call predecessors, (13), 10 states have return successors, (33), 13 states have call predecessors, (33), 12 states have call successors, (33) [2023-12-21 21:31:32,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 119 transitions. [2023-12-21 21:31:32,106 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 119 transitions. Word has length 66 [2023-12-21 21:31:32,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:31:32,106 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 119 transitions. [2023-12-21 21:31:32,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-12-21 21:31:32,106 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 119 transitions. [2023-12-21 21:31:32,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-21 21:31:32,107 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:31:32,107 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2023-12-21 21:31:32,125 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-12-21 21:31:32,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:31:32,311 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:31:32,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:31:32,311 INFO L85 PathProgramCache]: Analyzing trace with hash 934238064, now seen corresponding path program 1 times [2023-12-21 21:31:32,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:31:32,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1898110668] [2023-12-21 21:31:32,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:31:32,311 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 [2023-12-21 21:31:32,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:31:32,312 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:31:32,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-12-21 21:31:32,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:31:32,377 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-21 21:31:32,378 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:31:32,988 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-21 21:31:32,989 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 21:31:34,842 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-21 21:31:34,842 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:31:34,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1898110668] [2023-12-21 21:31:34,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1898110668] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 21:31:34,842 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 21:31:34,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 28 [2023-12-21 21:31:34,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909099240] [2023-12-21 21:31:34,842 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 21:31:34,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-21 21:31:34,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:31:34,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-21 21:31:34,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=649, Unknown=0, NotChecked=0, Total=756 [2023-12-21 21:31:34,844 INFO L87 Difference]: Start difference. First operand 83 states and 119 transitions. Second operand has 28 states, 28 states have (on average 2.0) internal successors, (56), 28 states have internal predecessors, (56), 8 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) [2023-12-21 21:31:38,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:31:38,814 INFO L93 Difference]: Finished difference Result 144 states and 201 transitions. [2023-12-21 21:31:38,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-21 21:31:38,815 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.0) internal successors, (56), 28 states have internal predecessors, (56), 8 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) Word has length 66 [2023-12-21 21:31:38,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:31:38,816 INFO L225 Difference]: With dead ends: 144 [2023-12-21 21:31:38,816 INFO L226 Difference]: Without dead ends: 111 [2023-12-21 21:31:38,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=485, Invalid=2167, Unknown=0, NotChecked=0, Total=2652 [2023-12-21 21:31:38,817 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 197 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-21 21:31:38,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 712 Invalid, 820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 767 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-21 21:31:38,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2023-12-21 21:31:38,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 95. [2023-12-21 21:31:38,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 69 states have (on average 1.2173913043478262) internal successors, (84), 73 states have internal predecessors, (84), 15 states have call successors, (15), 6 states have call predecessors, (15), 10 states have return successors, (37), 15 states have call predecessors, (37), 14 states have call successors, (37) [2023-12-21 21:31:38,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 136 transitions. [2023-12-21 21:31:38,826 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 136 transitions. Word has length 66 [2023-12-21 21:31:38,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:31:38,827 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 136 transitions. [2023-12-21 21:31:38,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.0) internal successors, (56), 28 states have internal predecessors, (56), 8 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) [2023-12-21 21:31:38,827 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 136 transitions. [2023-12-21 21:31:38,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-21 21:31:38,828 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:31:38,828 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2023-12-21 21:31:38,833 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Ended with exit code 0 [2023-12-21 21:31:39,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:31:39,032 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:31:39,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:31:39,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1171067760, now seen corresponding path program 2 times [2023-12-21 21:31:39,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:31:39,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [445220811] [2023-12-21 21:31:39,033 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 21:31:39,033 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 [2023-12-21 21:31:39,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:31:39,053 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:31:39,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-12-21 21:31:39,105 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 21:31:39,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 21:31:39,107 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-21 21:31:39,109 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:31:39,693 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-21 21:31:39,693 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 21:31:41,726 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-21 21:31:41,726 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:31:41,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [445220811] [2023-12-21 21:31:41,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [445220811] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 21:31:41,726 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 21:31:41,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 28 [2023-12-21 21:31:41,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656362499] [2023-12-21 21:31:41,726 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 21:31:41,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-21 21:31:41,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:31:41,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-21 21:31:41,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=651, Unknown=0, NotChecked=0, Total=756 [2023-12-21 21:31:41,728 INFO L87 Difference]: Start difference. First operand 95 states and 136 transitions. Second operand has 28 states, 28 states have (on average 2.0) internal successors, (56), 28 states have internal predecessors, (56), 8 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) [2023-12-21 21:31:45,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:31:45,935 INFO L93 Difference]: Finished difference Result 162 states and 230 transitions. [2023-12-21 21:31:45,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-21 21:31:45,936 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.0) internal successors, (56), 28 states have internal predecessors, (56), 8 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) Word has length 66 [2023-12-21 21:31:45,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:31:45,937 INFO L225 Difference]: With dead ends: 162 [2023-12-21 21:31:45,937 INFO L226 Difference]: Without dead ends: 127 [2023-12-21 21:31:45,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=484, Invalid=2168, Unknown=0, NotChecked=0, Total=2652 [2023-12-21 21:31:45,938 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 200 mSDsluCounter, 909 mSDsCounter, 0 mSdLazyCounter, 867 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 987 SdHoareTripleChecker+Invalid, 929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-21 21:31:45,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 987 Invalid, 929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 867 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-21 21:31:45,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2023-12-21 21:31:45,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 111. [2023-12-21 21:31:45,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 81 states have (on average 1.1975308641975309) internal successors, (97), 85 states have internal predecessors, (97), 18 states have call successors, (18), 7 states have call predecessors, (18), 11 states have return successors, (46), 18 states have call predecessors, (46), 17 states have call successors, (46) [2023-12-21 21:31:45,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 161 transitions. [2023-12-21 21:31:45,947 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 161 transitions. Word has length 66 [2023-12-21 21:31:45,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:31:45,947 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 161 transitions. [2023-12-21 21:31:45,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.0) internal successors, (56), 28 states have internal predecessors, (56), 8 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) [2023-12-21 21:31:45,948 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 161 transitions. [2023-12-21 21:31:45,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-21 21:31:45,962 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:31:45,962 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2023-12-21 21:31:45,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-12-21 21:31:46,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:31:46,163 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:31:46,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:31:46,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1013333012, now seen corresponding path program 1 times [2023-12-21 21:31:46,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:31:46,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1503026439] [2023-12-21 21:31:46,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:31:46,164 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 [2023-12-21 21:31:46,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:31:46,165 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:31:46,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-12-21 21:31:46,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:31:46,214 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-21 21:31:46,215 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:31:46,656 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-21 21:31:46,656 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 21:31:46,985 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:31:46,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1503026439] [2023-12-21 21:31:46,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1503026439] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 21:31:46,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2097475068] [2023-12-21 21:31:46,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:31:46,986 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-21 21:31:46,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-21 21:31:47,017 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-21 21:31:47,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2023-12-21 21:31:47,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:31:47,085 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-21 21:31:47,085 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:31:47,244 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 21:31:47,244 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:31:47,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2097475068] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:31:47,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 21:31:47,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [14] total 17 [2023-12-21 21:31:47,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423083936] [2023-12-21 21:31:47,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:31:47,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:31:47,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:31:47,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:31:47,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2023-12-21 21:31:47,245 INFO L87 Difference]: Start difference. First operand 111 states and 161 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-12-21 21:31:47,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:31:47,315 INFO L93 Difference]: Finished difference Result 137 states and 209 transitions. [2023-12-21 21:31:47,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:31:47,315 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 68 [2023-12-21 21:31:47,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:31:47,316 INFO L225 Difference]: With dead ends: 137 [2023-12-21 21:31:47,316 INFO L226 Difference]: Without dead ends: 126 [2023-12-21 21:31:47,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2023-12-21 21:31:47,317 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 21 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:31:47,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 239 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:31:47,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2023-12-21 21:31:47,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 117. [2023-12-21 21:31:47,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 84 states have (on average 1.1904761904761905) internal successors, (100), 89 states have internal predecessors, (100), 20 states have call successors, (20), 7 states have call predecessors, (20), 12 states have return successors, (53), 20 states have call predecessors, (53), 19 states have call successors, (53) [2023-12-21 21:31:47,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 173 transitions. [2023-12-21 21:31:47,327 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 173 transitions. Word has length 68 [2023-12-21 21:31:47,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:31:47,327 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 173 transitions. [2023-12-21 21:31:47,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-12-21 21:31:47,327 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 173 transitions. [2023-12-21 21:31:47,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-21 21:31:47,328 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:31:47,328 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2023-12-21 21:31:47,330 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (24)] Ended with exit code 0 [2023-12-21 21:31:47,533 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 (23)] Forceful destruction successful, exit code 0 [2023-12-21 21:31:47,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:31:47,733 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:31:47,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:31:47,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1436034838, now seen corresponding path program 1 times [2023-12-21 21:31:47,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:31:47,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1635129948] [2023-12-21 21:31:47,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:31:47,734 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:31:47,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:31:47,734 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:31:47,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-12-21 21:31:47,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:31:47,785 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-21 21:31:47,787 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:31:48,327 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-21 21:31:48,327 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 21:31:50,041 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-21 21:31:50,041 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:31:50,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1635129948] [2023-12-21 21:31:50,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1635129948] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 21:31:50,041 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 21:31:50,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 28 [2023-12-21 21:31:50,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469550091] [2023-12-21 21:31:50,041 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 21:31:50,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-21 21:31:50,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:31:50,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-21 21:31:50,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=623, Unknown=0, NotChecked=0, Total=756 [2023-12-21 21:31:50,042 INFO L87 Difference]: Start difference. First operand 117 states and 173 transitions. Second operand has 28 states, 28 states have (on average 2.0714285714285716) internal successors, (58), 28 states have internal predecessors, (58), 8 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) [2023-12-21 21:31:52,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:31:52,911 INFO L93 Difference]: Finished difference Result 148 states and 208 transitions. [2023-12-21 21:31:52,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-21 21:31:52,912 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.0714285714285716) internal successors, (58), 28 states have internal predecessors, (58), 8 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) Word has length 68 [2023-12-21 21:31:52,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:31:52,913 INFO L225 Difference]: With dead ends: 148 [2023-12-21 21:31:52,913 INFO L226 Difference]: Without dead ends: 129 [2023-12-21 21:31:52,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=381, Invalid=1511, Unknown=0, NotChecked=0, Total=1892 [2023-12-21 21:31:52,914 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 117 mSDsluCounter, 724 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-21 21:31:52,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 791 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-21 21:31:52,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-12-21 21:31:52,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 119. [2023-12-21 21:31:52,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 86 states have (on average 1.186046511627907) internal successors, (102), 90 states have internal predecessors, (102), 20 states have call successors, (20), 8 states have call predecessors, (20), 12 states have return successors, (48), 20 states have call predecessors, (48), 19 states have call successors, (48) [2023-12-21 21:31:52,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 170 transitions. [2023-12-21 21:31:52,924 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 170 transitions. Word has length 68 [2023-12-21 21:31:52,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:31:52,925 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 170 transitions. [2023-12-21 21:31:52,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.0714285714285716) internal successors, (58), 28 states have internal predecessors, (58), 8 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) [2023-12-21 21:31:52,925 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 170 transitions. [2023-12-21 21:31:52,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-21 21:31:52,926 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:31:52,926 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2023-12-21 21:31:52,929 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 (25)] Ended with exit code 0 [2023-12-21 21:31:53,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:31:53,126 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:31:53,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:31:53,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1789962251, now seen corresponding path program 1 times [2023-12-21 21:31:53,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:31:53,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1047842042] [2023-12-21 21:31:53,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:31:53,127 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 [2023-12-21 21:31:53,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:31:53,129 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:31:53,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-12-21 21:31:53,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:31:53,179 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-21 21:31:53,180 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:31:53,232 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-21 21:31:53,232 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:31:53,232 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:31:53,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1047842042] [2023-12-21 21:31:53,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1047842042] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:31:53,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:31:53,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 21:31:53,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163297462] [2023-12-21 21:31:53,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:31:53,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 21:31:53,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:31:53,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 21:31:53,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-21 21:31:53,233 INFO L87 Difference]: Start difference. First operand 119 states and 170 transitions. Second operand has 8 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-21 21:31:53,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:31:53,305 INFO L93 Difference]: Finished difference Result 133 states and 185 transitions. [2023-12-21 21:31:53,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 21:31:53,305 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 68 [2023-12-21 21:31:53,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:31:53,306 INFO L225 Difference]: With dead ends: 133 [2023-12-21 21:31:53,306 INFO L226 Difference]: Without dead ends: 124 [2023-12-21 21:31:53,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-12-21 21:31:53,306 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 6 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:31:53,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 376 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:31:53,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2023-12-21 21:31:53,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 119. [2023-12-21 21:31:53,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 86 states have (on average 1.186046511627907) internal successors, (102), 90 states have internal predecessors, (102), 20 states have call successors, (20), 8 states have call predecessors, (20), 12 states have return successors, (45), 20 states have call predecessors, (45), 19 states have call successors, (45) [2023-12-21 21:31:53,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 167 transitions. [2023-12-21 21:31:53,317 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 167 transitions. Word has length 68 [2023-12-21 21:31:53,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:31:53,317 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 167 transitions. [2023-12-21 21:31:53,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-21 21:31:53,318 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 167 transitions. [2023-12-21 21:31:53,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-21 21:31:53,318 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:31:53,318 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2023-12-21 21:31:53,321 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 (26)] Ended with exit code 0 [2023-12-21 21:31:53,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:31:53,519 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:31:53,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:31:53,519 INFO L85 PathProgramCache]: Analyzing trace with hash -832034154, now seen corresponding path program 2 times [2023-12-21 21:31:53,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:31:53,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1216870776] [2023-12-21 21:31:53,520 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 21:31:53,520 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 [2023-12-21 21:31:53,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:31:53,523 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:31:53,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-12-21 21:31:53,572 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 21:31:53,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 21:31:53,574 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-21 21:31:53,575 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:31:54,143 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-21 21:31:54,143 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 21:31:55,892 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-21 21:31:55,904 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:31:55,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1216870776] [2023-12-21 21:31:55,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1216870776] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 21:31:55,904 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 21:31:55,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 28 [2023-12-21 21:31:55,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699400514] [2023-12-21 21:31:55,908 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 21:31:55,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-21 21:31:55,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:31:55,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-21 21:31:55,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=629, Unknown=0, NotChecked=0, Total=756 [2023-12-21 21:31:55,910 INFO L87 Difference]: Start difference. First operand 119 states and 167 transitions. Second operand has 28 states, 28 states have (on average 2.0714285714285716) internal successors, (58), 28 states have internal predecessors, (58), 8 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) [2023-12-21 21:31:58,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:31:58,497 INFO L93 Difference]: Finished difference Result 150 states and 201 transitions. [2023-12-21 21:31:58,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-21 21:31:58,498 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.0714285714285716) internal successors, (58), 28 states have internal predecessors, (58), 8 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) Word has length 68 [2023-12-21 21:31:58,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:31:58,499 INFO L225 Difference]: With dead ends: 150 [2023-12-21 21:31:58,499 INFO L226 Difference]: Without dead ends: 137 [2023-12-21 21:31:58,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=375, Invalid=1517, Unknown=0, NotChecked=0, Total=1892 [2023-12-21 21:31:58,500 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 137 mSDsluCounter, 948 mSDsCounter, 0 mSdLazyCounter, 731 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 1018 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-21 21:31:58,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 1018 Invalid, 763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 731 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-21 21:31:58,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2023-12-21 21:31:58,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 127. [2023-12-21 21:31:58,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 93 states have (on average 1.1827956989247312) internal successors, (110), 96 states have internal predecessors, (110), 21 states have call successors, (21), 9 states have call predecessors, (21), 12 states have return successors, (43), 21 states have call predecessors, (43), 20 states have call successors, (43) [2023-12-21 21:31:58,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 174 transitions. [2023-12-21 21:31:58,531 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 174 transitions. Word has length 68 [2023-12-21 21:31:58,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:31:58,532 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 174 transitions. [2023-12-21 21:31:58,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.0714285714285716) internal successors, (58), 28 states have internal predecessors, (58), 8 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) [2023-12-21 21:31:58,532 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 174 transitions. [2023-12-21 21:31:58,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-21 21:31:58,534 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:31:58,534 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:31:58,553 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 (27)] Ended with exit code 0 [2023-12-21 21:31:58,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:31:58,737 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:31:58,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:31:58,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1337945379, now seen corresponding path program 1 times [2023-12-21 21:31:58,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:31:58,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1922729525] [2023-12-21 21:31:58,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:31:58,738 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 [2023-12-21 21:31:58,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:31:58,739 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:31:58,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2023-12-21 21:31:58,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:31:58,800 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-21 21:31:58,802 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:31:59,230 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 21:31:59,230 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 21:32:00,605 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-12-21 21:32:00,605 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:32:00,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1922729525] [2023-12-21 21:32:00,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1922729525] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 21:32:00,605 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 21:32:00,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 26 [2023-12-21 21:32:00,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869693214] [2023-12-21 21:32:00,605 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 21:32:00,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-21 21:32:00,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:32:00,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-21 21:32:00,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-12-21 21:32:00,606 INFO L87 Difference]: Start difference. First operand 127 states and 174 transitions. Second operand has 26 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 26 states have internal predecessors, (55), 9 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (12), 9 states have call predecessors, (12), 8 states have call successors, (12) [2023-12-21 21:32:02,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:32:02,757 INFO L93 Difference]: Finished difference Result 145 states and 193 transitions. [2023-12-21 21:32:02,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-21 21:32:02,758 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 26 states have internal predecessors, (55), 9 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (12), 9 states have call predecessors, (12), 8 states have call successors, (12) Word has length 72 [2023-12-21 21:32:02,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:32:02,758 INFO L225 Difference]: With dead ends: 145 [2023-12-21 21:32:02,758 INFO L226 Difference]: Without dead ends: 118 [2023-12-21 21:32:02,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=323, Invalid=1399, Unknown=0, NotChecked=0, Total=1722 [2023-12-21 21:32:02,759 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 172 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-21 21:32:02,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 589 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-21 21:32:02,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2023-12-21 21:32:02,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 113. [2023-12-21 21:32:02,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 82 states have (on average 1.170731707317073) internal successors, (96), 85 states have internal predecessors, (96), 19 states have call successors, (19), 8 states have call predecessors, (19), 11 states have return successors, (40), 19 states have call predecessors, (40), 18 states have call successors, (40) [2023-12-21 21:32:02,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 155 transitions. [2023-12-21 21:32:02,770 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 155 transitions. Word has length 72 [2023-12-21 21:32:02,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:32:02,770 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 155 transitions. [2023-12-21 21:32:02,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 26 states have internal predecessors, (55), 9 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (12), 9 states have call predecessors, (12), 8 states have call successors, (12) [2023-12-21 21:32:02,770 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 155 transitions. [2023-12-21 21:32:02,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-21 21:32:02,772 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:32:02,772 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:32:02,783 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2023-12-21 21:32:02,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:32:02,975 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:32:02,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:32:02,975 INFO L85 PathProgramCache]: Analyzing trace with hash -333974070, now seen corresponding path program 1 times [2023-12-21 21:32:02,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:32:02,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1295790486] [2023-12-21 21:32:02,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:32:02,976 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 [2023-12-21 21:32:02,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:32:02,977 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:32:02,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2023-12-21 21:32:03,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:32:03,101 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 43 conjunts are in the unsatisfiable core [2023-12-21 21:32:03,103 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:32:04,742 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 21:32:04,742 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 21:32:12,646 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-12-21 21:32:12,646 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:32:12,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1295790486] [2023-12-21 21:32:12,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1295790486] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 21:32:12,646 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 21:32:12,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 24] total 44 [2023-12-21 21:32:12,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425253050] [2023-12-21 21:32:12,646 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 21:32:12,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-12-21 21:32:12,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:32:12,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-12-21 21:32:12,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=1655, Unknown=0, NotChecked=0, Total=1892 [2023-12-21 21:32:12,649 INFO L87 Difference]: Start difference. First operand 113 states and 155 transitions. Second operand has 44 states, 38 states have (on average 1.736842105263158) internal successors, (66), 41 states have internal predecessors, (66), 10 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (13), 11 states have call predecessors, (13), 9 states have call successors, (13) [2023-12-21 21:32:26,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:32:26,467 INFO L93 Difference]: Finished difference Result 144 states and 188 transitions. [2023-12-21 21:32:26,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-12-21 21:32:26,468 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 38 states have (on average 1.736842105263158) internal successors, (66), 41 states have internal predecessors, (66), 10 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (13), 11 states have call predecessors, (13), 9 states have call successors, (13) Word has length 75 [2023-12-21 21:32:26,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:32:26,469 INFO L225 Difference]: With dead ends: 144 [2023-12-21 21:32:26,469 INFO L226 Difference]: Without dead ends: 131 [2023-12-21 21:32:26,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 824 ImplicationChecksByTransitivity, 15.1s TimeCoverageRelationStatistics Valid=762, Invalid=4938, Unknown=0, NotChecked=0, Total=5700 [2023-12-21 21:32:26,471 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 117 mSDsluCounter, 1042 mSDsCounter, 0 mSdLazyCounter, 1329 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 1094 SdHoareTripleChecker+Invalid, 1378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2023-12-21 21:32:26,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 1094 Invalid, 1378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1329 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2023-12-21 21:32:26,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2023-12-21 21:32:26,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 115. [2023-12-21 21:32:26,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 84 states have (on average 1.1666666666666667) internal successors, (98), 86 states have internal predecessors, (98), 19 states have call successors, (19), 8 states have call predecessors, (19), 11 states have return successors, (38), 20 states have call predecessors, (38), 18 states have call successors, (38) [2023-12-21 21:32:26,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 155 transitions. [2023-12-21 21:32:26,482 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 155 transitions. Word has length 75 [2023-12-21 21:32:26,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:32:26,483 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 155 transitions. [2023-12-21 21:32:26,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 38 states have (on average 1.736842105263158) internal successors, (66), 41 states have internal predecessors, (66), 10 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (13), 11 states have call predecessors, (13), 9 states have call successors, (13) [2023-12-21 21:32:26,483 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 155 transitions. [2023-12-21 21:32:26,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-21 21:32:26,483 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:32:26,484 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:32:26,488 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 (29)] Ended with exit code 0 [2023-12-21 21:32:26,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:32:26,688 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:32:26,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:32:26,688 INFO L85 PathProgramCache]: Analyzing trace with hash 136400605, now seen corresponding path program 2 times [2023-12-21 21:32:26,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:32:26,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1124100681] [2023-12-21 21:32:26,689 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 21:32:26,689 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:32:26,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:32:26,690 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:32:26,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2023-12-21 21:32:26,745 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 21:32:26,745 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 21:32:26,747 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-21 21:32:26,749 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:32:27,127 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 21:32:27,128 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 21:32:28,521 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-12-21 21:32:28,521 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:32:28,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1124100681] [2023-12-21 21:32:28,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1124100681] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 21:32:28,521 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 21:32:28,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 26 [2023-12-21 21:32:28,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343883464] [2023-12-21 21:32:28,521 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 21:32:28,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-21 21:32:28,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:32:28,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-21 21:32:28,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=557, Unknown=0, NotChecked=0, Total=650 [2023-12-21 21:32:28,522 INFO L87 Difference]: Start difference. First operand 115 states and 155 transitions. Second operand has 26 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 26 states have internal predecessors, (55), 9 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (12), 9 states have call predecessors, (12), 8 states have call successors, (12) [2023-12-21 21:32:30,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:32:30,804 INFO L93 Difference]: Finished difference Result 128 states and 168 transitions. [2023-12-21 21:32:30,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-21 21:32:30,805 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 26 states have internal predecessors, (55), 9 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (12), 9 states have call predecessors, (12), 8 states have call successors, (12) Word has length 72 [2023-12-21 21:32:30,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:32:30,806 INFO L225 Difference]: With dead ends: 128 [2023-12-21 21:32:30,806 INFO L226 Difference]: Without dead ends: 101 [2023-12-21 21:32:30,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=333, Invalid=1473, Unknown=0, NotChecked=0, Total=1806 [2023-12-21 21:32:30,807 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 140 mSDsluCounter, 648 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:32:30,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 710 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-21 21:32:30,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-12-21 21:32:30,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 89. [2023-12-21 21:32:30,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 64 states have (on average 1.1875) internal successors, (76), 66 states have internal predecessors, (76), 15 states have call successors, (15), 6 states have call predecessors, (15), 9 states have return successors, (29), 16 states have call predecessors, (29), 14 states have call successors, (29) [2023-12-21 21:32:30,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 120 transitions. [2023-12-21 21:32:30,816 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 120 transitions. Word has length 72 [2023-12-21 21:32:30,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:32:30,816 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 120 transitions. [2023-12-21 21:32:30,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 26 states have internal predecessors, (55), 9 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (12), 9 states have call predecessors, (12), 8 states have call successors, (12) [2023-12-21 21:32:30,816 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 120 transitions. [2023-12-21 21:32:30,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-21 21:32:30,817 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:32:30,817 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:32:30,820 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 (30)] Forceful destruction successful, exit code 0 [2023-12-21 21:32:31,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:32:31,020 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:32:31,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:32:31,020 INFO L85 PathProgramCache]: Analyzing trace with hash 2103771722, now seen corresponding path program 2 times [2023-12-21 21:32:31,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:32:31,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [978090643] [2023-12-21 21:32:31,020 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 21:32:31,020 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 [2023-12-21 21:32:31,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:32:31,021 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:32:31,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2023-12-21 21:32:31,144 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 21:32:31,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 21:32:31,147 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 43 conjunts are in the unsatisfiable core [2023-12-21 21:32:31,149 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:32:32,554 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 21:32:32,554 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 21:32:39,868 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-12-21 21:32:39,868 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:32:39,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [978090643] [2023-12-21 21:32:39,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [978090643] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 21:32:39,869 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 21:32:39,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 24] total 44 [2023-12-21 21:32:39,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136497765] [2023-12-21 21:32:39,869 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 21:32:39,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-12-21 21:32:39,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:32:39,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-12-21 21:32:39,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=1665, Unknown=0, NotChecked=0, Total=1892 [2023-12-21 21:32:39,870 INFO L87 Difference]: Start difference. First operand 89 states and 120 transitions. Second operand has 44 states, 38 states have (on average 1.736842105263158) internal successors, (66), 41 states have internal predecessors, (66), 10 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (13), 11 states have call predecessors, (13), 9 states have call successors, (13) [2023-12-21 21:32:43,692 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-21 21:32:57,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:32:57,014 INFO L93 Difference]: Finished difference Result 128 states and 167 transitions. [2023-12-21 21:32:57,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-12-21 21:32:57,015 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 38 states have (on average 1.736842105263158) internal successors, (66), 41 states have internal predecessors, (66), 10 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (13), 11 states have call predecessors, (13), 9 states have call successors, (13) Word has length 75 [2023-12-21 21:32:57,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:32:57,015 INFO L225 Difference]: With dead ends: 128 [2023-12-21 21:32:57,015 INFO L226 Difference]: Without dead ends: 115 [2023-12-21 21:32:57,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 856 ImplicationChecksByTransitivity, 17.1s TimeCoverageRelationStatistics Valid=747, Invalid=5259, Unknown=0, NotChecked=0, Total=6006 [2023-12-21 21:32:57,017 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 132 mSDsluCounter, 1106 mSDsCounter, 0 mSdLazyCounter, 1428 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 1159 SdHoareTripleChecker+Invalid, 1483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2023-12-21 21:32:57,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 1159 Invalid, 1483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1428 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2023-12-21 21:32:57,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-12-21 21:32:57,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 102. [2023-12-21 21:32:57,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 74 states have (on average 1.1756756756756757) internal successors, (87), 76 states have internal predecessors, (87), 17 states have call successors, (17), 7 states have call predecessors, (17), 10 states have return successors, (34), 18 states have call predecessors, (34), 16 states have call successors, (34) [2023-12-21 21:32:57,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 138 transitions. [2023-12-21 21:32:57,033 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 138 transitions. Word has length 75 [2023-12-21 21:32:57,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:32:57,033 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 138 transitions. [2023-12-21 21:32:57,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 38 states have (on average 1.736842105263158) internal successors, (66), 41 states have internal predecessors, (66), 10 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (13), 11 states have call predecessors, (13), 9 states have call successors, (13) [2023-12-21 21:32:57,034 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 138 transitions. [2023-12-21 21:32:57,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-21 21:32:57,035 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:32:57,035 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:32:57,040 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2023-12-21 21:32:57,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:32:57,238 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:32:57,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:32:57,238 INFO L85 PathProgramCache]: Analyzing trace with hash -883430198, now seen corresponding path program 1 times [2023-12-21 21:32:57,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:32:57,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1648775012] [2023-12-21 21:32:57,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:32:57,239 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 [2023-12-21 21:32:57,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:32:57,239 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:32:57,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2023-12-21 21:32:57,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:32:57,359 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 43 conjunts are in the unsatisfiable core [2023-12-21 21:32:57,365 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:32:58,832 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 21:32:58,832 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 21:33:03,954 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-12-21 21:33:03,954 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:33:03,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1648775012] [2023-12-21 21:33:03,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1648775012] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 21:33:03,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 21:33:03,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23] total 43 [2023-12-21 21:33:03,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42189490] [2023-12-21 21:33:03,955 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 21:33:03,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-12-21 21:33:03,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:33:03,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-12-21 21:33:03,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=1624, Unknown=0, NotChecked=0, Total=1806 [2023-12-21 21:33:03,956 INFO L87 Difference]: Start difference. First operand 102 states and 138 transitions. Second operand has 43 states, 37 states have (on average 1.7027027027027026) internal successors, (63), 40 states have internal predecessors, (63), 10 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (13), 11 states have call predecessors, (13), 9 states have call successors, (13) [2023-12-21 21:33:18,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:33:18,255 INFO L93 Difference]: Finished difference Result 144 states and 190 transitions. [2023-12-21 21:33:18,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-12-21 21:33:18,256 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 37 states have (on average 1.7027027027027026) internal successors, (63), 40 states have internal predecessors, (63), 10 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (13), 11 states have call predecessors, (13), 9 states have call successors, (13) Word has length 73 [2023-12-21 21:33:18,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:33:18,256 INFO L225 Difference]: With dead ends: 144 [2023-12-21 21:33:18,256 INFO L226 Difference]: Without dead ends: 125 [2023-12-21 21:33:18,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1165 ImplicationChecksByTransitivity, 15.0s TimeCoverageRelationStatistics Valid=772, Invalid=6368, Unknown=0, NotChecked=0, Total=7140 [2023-12-21 21:33:18,259 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 137 mSDsluCounter, 1002 mSDsCounter, 0 mSdLazyCounter, 1637 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 1052 SdHoareTripleChecker+Invalid, 1724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-12-21 21:33:18,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 1052 Invalid, 1724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1637 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-12-21 21:33:18,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2023-12-21 21:33:18,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 114. [2023-12-21 21:33:18,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 84 states have (on average 1.1666666666666667) internal successors, (98), 85 states have internal predecessors, (98), 19 states have call successors, (19), 8 states have call predecessors, (19), 10 states have return successors, (35), 20 states have call predecessors, (35), 18 states have call successors, (35) [2023-12-21 21:33:18,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 152 transitions. [2023-12-21 21:33:18,274 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 152 transitions. Word has length 73 [2023-12-21 21:33:18,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:33:18,274 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 152 transitions. [2023-12-21 21:33:18,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 37 states have (on average 1.7027027027027026) internal successors, (63), 40 states have internal predecessors, (63), 10 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (13), 11 states have call predecessors, (13), 9 states have call successors, (13) [2023-12-21 21:33:18,274 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 152 transitions. [2023-12-21 21:33:18,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-21 21:33:18,275 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:33:18,275 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 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] [2023-12-21 21:33:18,278 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 (32)] Forceful destruction successful, exit code 0 [2023-12-21 21:33:18,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:33:18,478 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:33:18,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:33:18,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1349550408, now seen corresponding path program 1 times [2023-12-21 21:33:18,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:33:18,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [811800514] [2023-12-21 21:33:18,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:33:18,479 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 [2023-12-21 21:33:18,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:33:18,480 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:33:18,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2023-12-21 21:33:18,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:33:18,541 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-21 21:33:18,542 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:33:18,642 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-12-21 21:33:18,642 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 21:33:18,838 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-12-21 21:33:18,839 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:33:18,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [811800514] [2023-12-21 21:33:18,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [811800514] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 21:33:18,839 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 21:33:18,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2023-12-21 21:33:18,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835853136] [2023-12-21 21:33:18,839 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 21:33:18,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-21 21:33:18,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:33:18,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-21 21:33:18,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2023-12-21 21:33:18,840 INFO L87 Difference]: Start difference. First operand 114 states and 152 transitions. Second operand has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 15 states have internal predecessors, (62), 8 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) [2023-12-21 21:33:19,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:33:19,174 INFO L93 Difference]: Finished difference Result 123 states and 160 transitions. [2023-12-21 21:33:19,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 21:33:19,175 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 15 states have internal predecessors, (62), 8 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) Word has length 76 [2023-12-21 21:33:19,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:33:19,176 INFO L225 Difference]: With dead ends: 123 [2023-12-21 21:33:19,176 INFO L226 Difference]: Without dead ends: 110 [2023-12-21 21:33:19,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2023-12-21 21:33:19,176 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 87 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 21:33:19,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 519 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 21:33:19,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2023-12-21 21:33:19,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2023-12-21 21:33:19,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 81 states have (on average 1.1728395061728396) internal successors, (95), 83 states have internal predecessors, (95), 18 states have call successors, (18), 7 states have call predecessors, (18), 10 states have return successors, (33), 19 states have call predecessors, (33), 17 states have call successors, (33) [2023-12-21 21:33:19,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 146 transitions. [2023-12-21 21:33:19,190 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 146 transitions. Word has length 76 [2023-12-21 21:33:19,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:33:19,190 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 146 transitions. [2023-12-21 21:33:19,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 15 states have internal predecessors, (62), 8 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) [2023-12-21 21:33:19,190 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 146 transitions. [2023-12-21 21:33:19,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-21 21:33:19,191 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:33:19,191 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:33:19,194 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2023-12-21 21:33:19,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:33:19,394 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:33:19,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:33:19,394 INFO L85 PathProgramCache]: Analyzing trace with hash 939447430, now seen corresponding path program 2 times [2023-12-21 21:33:19,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:33:19,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1802670731] [2023-12-21 21:33:19,394 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 21:33:19,394 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 [2023-12-21 21:33:19,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:33:19,395 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:33:19,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2023-12-21 21:33:19,518 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 21:33:19,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 21:33:19,522 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-21 21:33:19,523 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:33:20,411 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 21:33:20,411 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 21:33:23,315 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-12-21 21:33:23,316 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:33:23,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1802670731] [2023-12-21 21:33:23,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1802670731] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 21:33:23,316 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 21:33:23,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 33 [2023-12-21 21:33:23,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207369972] [2023-12-21 21:33:23,316 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 21:33:23,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-21 21:33:23,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:33:23,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-21 21:33:23,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=921, Unknown=0, NotChecked=0, Total=1056 [2023-12-21 21:33:23,317 INFO L87 Difference]: Start difference. First operand 110 states and 146 transitions. Second operand has 33 states, 33 states have (on average 1.8181818181818181) internal successors, (60), 33 states have internal predecessors, (60), 10 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (13), 10 states have call predecessors, (13), 9 states have call successors, (13) [2023-12-21 21:33:31,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:33:31,838 INFO L93 Difference]: Finished difference Result 157 states and 199 transitions. [2023-12-21 21:33:31,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-12-21 21:33:31,838 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.8181818181818181) internal successors, (60), 33 states have internal predecessors, (60), 10 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (13), 10 states have call predecessors, (13), 9 states have call successors, (13) Word has length 73 [2023-12-21 21:33:31,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:33:31,839 INFO L225 Difference]: With dead ends: 157 [2023-12-21 21:33:31,839 INFO L226 Difference]: Without dead ends: 146 [2023-12-21 21:33:31,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 663 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=684, Invalid=3606, Unknown=0, NotChecked=0, Total=4290 [2023-12-21 21:33:31,841 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 111 mSDsluCounter, 989 mSDsCounter, 0 mSdLazyCounter, 1095 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 1044 SdHoareTripleChecker+Invalid, 1142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:33:31,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 1044 Invalid, 1142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1095 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-21 21:33:31,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2023-12-21 21:33:31,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 132. [2023-12-21 21:33:31,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 99 states have (on average 1.1717171717171717) internal successors, (116), 101 states have internal predecessors, (116), 21 states have call successors, (21), 8 states have call predecessors, (21), 11 states have return successors, (34), 22 states have call predecessors, (34), 20 states have call successors, (34) [2023-12-21 21:33:31,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 171 transitions. [2023-12-21 21:33:31,858 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 171 transitions. Word has length 73 [2023-12-21 21:33:31,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:33:31,858 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 171 transitions. [2023-12-21 21:33:31,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.8181818181818181) internal successors, (60), 33 states have internal predecessors, (60), 10 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (13), 10 states have call predecessors, (13), 9 states have call successors, (13) [2023-12-21 21:33:31,858 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 171 transitions. [2023-12-21 21:33:31,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-21 21:33:31,859 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:33:31,859 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 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] [2023-12-21 21:33:31,864 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2023-12-21 21:33:32,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:33:32,062 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:33:32,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:33:32,063 INFO L85 PathProgramCache]: Analyzing trace with hash -389741368, now seen corresponding path program 2 times [2023-12-21 21:33:32,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:33:32,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [261077874] [2023-12-21 21:33:32,063 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 21:33:32,063 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 [2023-12-21 21:33:32,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:33:32,064 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:33:32,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2023-12-21 21:33:32,126 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 21:33:32,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 21:33:32,128 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-21 21:33:32,130 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:33:32,234 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-12-21 21:33:32,234 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 21:33:32,411 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-12-21 21:33:32,411 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:33:32,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [261077874] [2023-12-21 21:33:32,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [261077874] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 21:33:32,411 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 21:33:32,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2023-12-21 21:33:32,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877749819] [2023-12-21 21:33:32,411 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 21:33:32,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-21 21:33:32,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:33:32,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-21 21:33:32,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2023-12-21 21:33:32,412 INFO L87 Difference]: Start difference. First operand 132 states and 171 transitions. Second operand has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 15 states have internal predecessors, (62), 8 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) [2023-12-21 21:33:32,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:33:32,711 INFO L93 Difference]: Finished difference Result 139 states and 177 transitions. [2023-12-21 21:33:32,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 21:33:32,712 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 15 states have internal predecessors, (62), 8 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) Word has length 76 [2023-12-21 21:33:32,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:33:32,718 INFO L225 Difference]: With dead ends: 139 [2023-12-21 21:33:32,718 INFO L226 Difference]: Without dead ends: 117 [2023-12-21 21:33:32,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=360, Unknown=0, NotChecked=0, Total=462 [2023-12-21 21:33:32,719 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 98 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 21:33:32,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 429 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 21:33:32,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-12-21 21:33:32,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 109. [2023-12-21 21:33:32,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 80 states have (on average 1.175) internal successors, (94), 83 states have internal predecessors, (94), 18 states have call successors, (18), 7 states have call predecessors, (18), 10 states have return successors, (29), 18 states have call predecessors, (29), 17 states have call successors, (29) [2023-12-21 21:33:32,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 141 transitions. [2023-12-21 21:33:32,736 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 141 transitions. Word has length 76 [2023-12-21 21:33:32,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:33:32,736 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 141 transitions. [2023-12-21 21:33:32,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 15 states have internal predecessors, (62), 8 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) [2023-12-21 21:33:32,737 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 141 transitions. [2023-12-21 21:33:32,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-21 21:33:32,737 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:33:32,737 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 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] [2023-12-21 21:33:32,740 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2023-12-21 21:33:32,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:33:32,941 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:33:32,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:33:32,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1640509679, now seen corresponding path program 1 times [2023-12-21 21:33:32,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:33:32,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [306704383] [2023-12-21 21:33:32,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:33:32,942 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 [2023-12-21 21:33:32,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:33:32,943 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:33:32,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2023-12-21 21:33:33,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:33:33,461 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 44 conjunts are in the unsatisfiable core [2023-12-21 21:33:33,463 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:33:35,581 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 8 proven. 11 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-21 21:33:35,581 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 21:33:43,334 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 9 proven. 11 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-12-21 21:33:43,334 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:33:43,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [306704383] [2023-12-21 21:33:43,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [306704383] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 21:33:43,334 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 21:33:43,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23] total 45 [2023-12-21 21:33:43,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413805558] [2023-12-21 21:33:43,334 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 21:33:43,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-12-21 21:33:43,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:33:43,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-12-21 21:33:43,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1791, Unknown=0, NotChecked=0, Total=1980 [2023-12-21 21:33:43,336 INFO L87 Difference]: Start difference. First operand 109 states and 141 transitions. Second operand has 45 states, 39 states have (on average 1.6153846153846154) internal successors, (63), 41 states have internal predecessors, (63), 12 states have call successors, (15), 2 states have call predecessors, (15), 5 states have return successors, (15), 13 states have call predecessors, (15), 11 states have call successors, (15) [2023-12-21 21:34:01,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:34:01,656 INFO L93 Difference]: Finished difference Result 128 states and 161 transitions. [2023-12-21 21:34:01,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-12-21 21:34:01,657 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 39 states have (on average 1.6153846153846154) internal successors, (63), 41 states have internal predecessors, (63), 12 states have call successors, (15), 2 states have call predecessors, (15), 5 states have return successors, (15), 13 states have call predecessors, (15), 11 states have call successors, (15) Word has length 78 [2023-12-21 21:34:01,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:34:01,657 INFO L225 Difference]: With dead ends: 128 [2023-12-21 21:34:01,657 INFO L226 Difference]: Without dead ends: 119 [2023-12-21 21:34:01,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 800 ImplicationChecksByTransitivity, 17.9s TimeCoverageRelationStatistics Valid=554, Invalid=4702, Unknown=0, NotChecked=0, Total=5256 [2023-12-21 21:34:01,659 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 138 mSDsluCounter, 1335 mSDsCounter, 0 mSdLazyCounter, 1418 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 1389 SdHoareTripleChecker+Invalid, 1485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2023-12-21 21:34:01,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 1389 Invalid, 1485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1418 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2023-12-21 21:34:01,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2023-12-21 21:34:01,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 111. [2023-12-21 21:34:01,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 82 states have (on average 1.170731707317073) internal successors, (96), 84 states have internal predecessors, (96), 18 states have call successors, (18), 7 states have call predecessors, (18), 10 states have return successors, (27), 19 states have call predecessors, (27), 17 states have call successors, (27) [2023-12-21 21:34:01,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 141 transitions. [2023-12-21 21:34:01,675 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 141 transitions. Word has length 78 [2023-12-21 21:34:01,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:34:01,675 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 141 transitions. [2023-12-21 21:34:01,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 39 states have (on average 1.6153846153846154) internal successors, (63), 41 states have internal predecessors, (63), 12 states have call successors, (15), 2 states have call predecessors, (15), 5 states have return successors, (15), 13 states have call predecessors, (15), 11 states have call successors, (15) [2023-12-21 21:34:01,675 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 141 transitions. [2023-12-21 21:34:01,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-21 21:34:01,676 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:34:01,676 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 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] [2023-12-21 21:34:01,690 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 (36)] Forceful destruction successful, exit code 0 [2023-12-21 21:34:01,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:34:01,880 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:34:01,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:34:01,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1436681566, now seen corresponding path program 1 times [2023-12-21 21:34:01,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:34:01,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [672606560] [2023-12-21 21:34:01,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:34:01,881 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 [2023-12-21 21:34:01,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:34:01,882 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:34:01,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2023-12-21 21:34:01,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:34:01,935 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-21 21:34:01,936 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:34:02,039 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-12-21 21:34:02,039 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 21:34:02,212 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-12-21 21:34:02,212 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:34:02,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [672606560] [2023-12-21 21:34:02,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [672606560] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 21:34:02,212 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 21:34:02,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2023-12-21 21:34:02,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666804363] [2023-12-21 21:34:02,212 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 21:34:02,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-21 21:34:02,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:34:02,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-21 21:34:02,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2023-12-21 21:34:02,213 INFO L87 Difference]: Start difference. First operand 111 states and 141 transitions. Second operand has 15 states, 15 states have (on average 4.0) internal successors, (60), 15 states have internal predecessors, (60), 8 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) [2023-12-21 21:34:02,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:34:02,565 INFO L93 Difference]: Finished difference Result 125 states and 155 transitions. [2023-12-21 21:34:02,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 21:34:02,565 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.0) internal successors, (60), 15 states have internal predecessors, (60), 8 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) Word has length 74 [2023-12-21 21:34:02,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:34:02,566 INFO L225 Difference]: With dead ends: 125 [2023-12-21 21:34:02,566 INFO L226 Difference]: Without dead ends: 116 [2023-12-21 21:34:02,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2023-12-21 21:34:02,567 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 103 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 21:34:02,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 585 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 21:34:02,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-12-21 21:34:02,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 101. [2023-12-21 21:34:02,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 74 states have (on average 1.162162162162162) internal successors, (86), 75 states have internal predecessors, (86), 17 states have call successors, (17), 7 states have call predecessors, (17), 9 states have return successors, (25), 18 states have call predecessors, (25), 16 states have call successors, (25) [2023-12-21 21:34:02,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 128 transitions. [2023-12-21 21:34:02,582 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 128 transitions. Word has length 74 [2023-12-21 21:34:02,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:34:02,582 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 128 transitions. [2023-12-21 21:34:02,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.0) internal successors, (60), 15 states have internal predecessors, (60), 8 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) [2023-12-21 21:34:02,582 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 128 transitions. [2023-12-21 21:34:02,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-21 21:34:02,583 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:34:02,583 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 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] [2023-12-21 21:34:02,601 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 (37)] Ended with exit code 0 [2023-12-21 21:34:02,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:34:02,786 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:34:02,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:34:02,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1562951347, now seen corresponding path program 2 times [2023-12-21 21:34:02,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:34:02,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [840425788] [2023-12-21 21:34:02,787 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 21:34:02,787 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 [2023-12-21 21:34:02,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:34:02,788 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:34:02,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2023-12-21 21:34:03,310 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 21:34:03,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 21:34:03,316 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 44 conjunts are in the unsatisfiable core [2023-12-21 21:34:03,318 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:34:05,216 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 8 proven. 11 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-21 21:34:05,216 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 21:34:13,395 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 9 proven. 11 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-12-21 21:34:13,395 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:34:13,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [840425788] [2023-12-21 21:34:13,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [840425788] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 21:34:13,395 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 21:34:13,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23] total 45 [2023-12-21 21:34:13,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074691138] [2023-12-21 21:34:13,396 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 21:34:13,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-12-21 21:34:13,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:34:13,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-12-21 21:34:13,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=1798, Unknown=0, NotChecked=0, Total=1980 [2023-12-21 21:34:13,397 INFO L87 Difference]: Start difference. First operand 101 states and 128 transitions. Second operand has 45 states, 39 states have (on average 1.6153846153846154) internal successors, (63), 41 states have internal predecessors, (63), 12 states have call successors, (15), 2 states have call predecessors, (15), 5 states have return successors, (15), 13 states have call predecessors, (15), 11 states have call successors, (15) [2023-12-21 21:34:36,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:34:36,653 INFO L93 Difference]: Finished difference Result 121 states and 149 transitions. [2023-12-21 21:34:36,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-12-21 21:34:36,654 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 39 states have (on average 1.6153846153846154) internal successors, (63), 41 states have internal predecessors, (63), 12 states have call successors, (15), 2 states have call predecessors, (15), 5 states have return successors, (15), 13 states have call predecessors, (15), 11 states have call successors, (15) Word has length 78 [2023-12-21 21:34:36,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:34:36,655 INFO L225 Difference]: With dead ends: 121 [2023-12-21 21:34:36,655 INFO L226 Difference]: Without dead ends: 109 [2023-12-21 21:34:36,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1011 ImplicationChecksByTransitivity, 24.1s TimeCoverageRelationStatistics Valid=639, Invalid=5681, Unknown=0, NotChecked=0, Total=6320 [2023-12-21 21:34:36,656 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 134 mSDsluCounter, 1240 mSDsCounter, 0 mSdLazyCounter, 1442 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 1295 SdHoareTripleChecker+Invalid, 1511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2023-12-21 21:34:36,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 1295 Invalid, 1511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1442 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2023-12-21 21:34:36,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2023-12-21 21:34:36,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 99. [2023-12-21 21:34:36,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 72 states have (on average 1.1527777777777777) internal successors, (83), 74 states have internal predecessors, (83), 17 states have call successors, (17), 7 states have call predecessors, (17), 9 states have return successors, (23), 17 states have call predecessors, (23), 16 states have call successors, (23) [2023-12-21 21:34:36,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 123 transitions. [2023-12-21 21:34:36,671 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 123 transitions. Word has length 78 [2023-12-21 21:34:36,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:34:36,671 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 123 transitions. [2023-12-21 21:34:36,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 39 states have (on average 1.6153846153846154) internal successors, (63), 41 states have internal predecessors, (63), 12 states have call successors, (15), 2 states have call predecessors, (15), 5 states have return successors, (15), 13 states have call predecessors, (15), 11 states have call successors, (15) [2023-12-21 21:34:36,672 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 123 transitions. [2023-12-21 21:34:36,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-21 21:34:36,672 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:34:36,672 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 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] [2023-12-21 21:34:36,676 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 (38)] Ended with exit code 0 [2023-12-21 21:34:36,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:34:36,876 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:34:36,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:34:36,876 INFO L85 PathProgramCache]: Analyzing trace with hash 2136358071, now seen corresponding path program 1 times [2023-12-21 21:34:36,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:34:36,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1309920293] [2023-12-21 21:34:36,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:34:36,876 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:34:36,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:34:36,877 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:34:36,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2023-12-21 21:34:37,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:34:37,046 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-21 21:34:37,048 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:34:37,786 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 8 proven. 11 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-21 21:34:37,786 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 21:34:40,146 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-12-21 21:34:40,146 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:34:40,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1309920293] [2023-12-21 21:34:40,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1309920293] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 21:34:40,147 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 21:34:40,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 30 [2023-12-21 21:34:40,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206933590] [2023-12-21 21:34:40,147 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 21:34:40,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-21 21:34:40,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:34:40,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-21 21:34:40,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=756, Unknown=0, NotChecked=0, Total=870 [2023-12-21 21:34:40,148 INFO L87 Difference]: Start difference. First operand 99 states and 123 transitions. Second operand has 30 states, 30 states have (on average 2.0) internal successors, (60), 30 states have internal predecessors, (60), 11 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (14), 11 states have call predecessors, (14), 10 states have call successors, (14) [2023-12-21 21:34:44,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:34:44,588 INFO L93 Difference]: Finished difference Result 125 states and 152 transitions. [2023-12-21 21:34:44,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-21 21:34:44,590 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.0) internal successors, (60), 30 states have internal predecessors, (60), 11 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (14), 11 states have call predecessors, (14), 10 states have call successors, (14) Word has length 79 [2023-12-21 21:34:44,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:34:44,591 INFO L225 Difference]: With dead ends: 125 [2023-12-21 21:34:44,591 INFO L226 Difference]: Without dead ends: 84 [2023-12-21 21:34:44,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=461, Invalid=2401, Unknown=0, NotChecked=0, Total=2862 [2023-12-21 21:34:44,591 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 104 mSDsluCounter, 739 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 797 SdHoareTripleChecker+Invalid, 772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-21 21:34:44,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 797 Invalid, 772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 732 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-21 21:34:44,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2023-12-21 21:34:44,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 79. [2023-12-21 21:34:44,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 58 states have (on average 1.1551724137931034) internal successors, (67), 59 states have internal predecessors, (67), 13 states have call successors, (13), 6 states have call predecessors, (13), 7 states have return successors, (17), 13 states have call predecessors, (17), 12 states have call successors, (17) [2023-12-21 21:34:44,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 97 transitions. [2023-12-21 21:34:44,603 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 97 transitions. Word has length 79 [2023-12-21 21:34:44,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:34:44,603 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 97 transitions. [2023-12-21 21:34:44,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.0) internal successors, (60), 30 states have internal predecessors, (60), 11 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (14), 11 states have call predecessors, (14), 10 states have call successors, (14) [2023-12-21 21:34:44,603 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 97 transitions. [2023-12-21 21:34:44,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-21 21:34:44,604 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:34:44,604 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 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] [2023-12-21 21:34:44,610 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 (39)] Ended with exit code 0 [2023-12-21 21:34:44,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:34:44,807 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:34:44,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:34:44,810 INFO L85 PathProgramCache]: Analyzing trace with hash -267950221, now seen corresponding path program 2 times [2023-12-21 21:34:44,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:34:44,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2037021843] [2023-12-21 21:34:44,810 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 21:34:44,811 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:34:44,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:34:44,812 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:34:44,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2023-12-21 21:34:44,970 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 21:34:44,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 21:34:44,979 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-21 21:34:44,980 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:34:45,754 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 8 proven. 11 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-21 21:34:45,754 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 21:34:47,973 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-12-21 21:34:47,973 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:34:47,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2037021843] [2023-12-21 21:34:47,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2037021843] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 21:34:47,973 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 21:34:47,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 30 [2023-12-21 21:34:47,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621152975] [2023-12-21 21:34:47,973 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 21:34:47,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-21 21:34:47,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:34:47,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-21 21:34:47,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=758, Unknown=0, NotChecked=0, Total=870 [2023-12-21 21:34:47,974 INFO L87 Difference]: Start difference. First operand 79 states and 97 transitions. Second operand has 30 states, 30 states have (on average 2.0) internal successors, (60), 30 states have internal predecessors, (60), 11 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (14), 11 states have call predecessors, (14), 10 states have call successors, (14) [2023-12-21 21:34:52,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:34:52,745 INFO L93 Difference]: Finished difference Result 103 states and 122 transitions. [2023-12-21 21:34:52,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-21 21:34:52,746 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.0) internal successors, (60), 30 states have internal predecessors, (60), 11 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (14), 11 states have call predecessors, (14), 10 states have call successors, (14) Word has length 79 [2023-12-21 21:34:52,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:34:52,746 INFO L225 Difference]: With dead ends: 103 [2023-12-21 21:34:52,746 INFO L226 Difference]: Without dead ends: 78 [2023-12-21 21:34:52,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=473, Invalid=2497, Unknown=0, NotChecked=0, Total=2970 [2023-12-21 21:34:52,747 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 92 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 672 SdHoareTripleChecker+Invalid, 666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-21 21:34:52,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 672 Invalid, 666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-21 21:34:52,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-12-21 21:34:52,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 75. [2023-12-21 21:34:52,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 55 states have (on average 1.1636363636363636) internal successors, (64), 57 states have internal predecessors, (64), 12 states have call successors, (12), 5 states have call predecessors, (12), 7 states have return successors, (15), 12 states have call predecessors, (15), 11 states have call successors, (15) [2023-12-21 21:34:52,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 91 transitions. [2023-12-21 21:34:52,780 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 91 transitions. Word has length 79 [2023-12-21 21:34:52,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:34:52,781 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 91 transitions. [2023-12-21 21:34:52,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.0) internal successors, (60), 30 states have internal predecessors, (60), 11 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (14), 11 states have call predecessors, (14), 10 states have call successors, (14) [2023-12-21 21:34:52,781 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 91 transitions. [2023-12-21 21:34:52,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-21 21:34:52,781 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:34:52,781 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 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] [2023-12-21 21:34:52,787 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2023-12-21 21:34:52,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:34:52,982 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:34:52,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:34:52,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1062441329, now seen corresponding path program 1 times [2023-12-21 21:34:52,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:34:52,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1127923229] [2023-12-21 21:34:52,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:34:52,983 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 [2023-12-21 21:34:52,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:34:52,984 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:34:53,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2023-12-21 21:34:53,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:34:53,540 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-21 21:34:53,541 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:34:55,803 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-21 21:34:55,803 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 21:35:03,527 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 8 proven. 13 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-12-21 21:35:03,527 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:35:03,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1127923229] [2023-12-21 21:35:03,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1127923229] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 21:35:03,527 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 21:35:03,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25] total 49 [2023-12-21 21:35:03,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228199398] [2023-12-21 21:35:03,527 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 21:35:03,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-12-21 21:35:03,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:35:03,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-12-21 21:35:03,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=2178, Unknown=0, NotChecked=0, Total=2352 [2023-12-21 21:35:03,528 INFO L87 Difference]: Start difference. First operand 75 states and 91 transitions. Second operand has 49 states, 43 states have (on average 1.558139534883721) internal successors, (67), 45 states have internal predecessors, (67), 12 states have call successors, (15), 2 states have call predecessors, (15), 5 states have return successors, (15), 13 states have call predecessors, (15), 11 states have call successors, (15) [2023-12-21 21:35:21,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:35:21,535 INFO L93 Difference]: Finished difference Result 87 states and 104 transitions. [2023-12-21 21:35:21,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-21 21:35:21,535 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 43 states have (on average 1.558139534883721) internal successors, (67), 45 states have internal predecessors, (67), 12 states have call successors, (15), 2 states have call predecessors, (15), 5 states have return successors, (15), 13 states have call predecessors, (15), 11 states have call successors, (15) Word has length 80 [2023-12-21 21:35:21,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:35:21,536 INFO L225 Difference]: With dead ends: 87 [2023-12-21 21:35:21,536 INFO L226 Difference]: Without dead ends: 76 [2023-12-21 21:35:21,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 738 ImplicationChecksByTransitivity, 20.5s TimeCoverageRelationStatistics Valid=464, Invalid=4792, Unknown=0, NotChecked=0, Total=5256 [2023-12-21 21:35:21,537 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 122 mSDsluCounter, 959 mSDsCounter, 0 mSdLazyCounter, 1016 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 1004 SdHoareTripleChecker+Invalid, 1066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-12-21 21:35:21,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 1004 Invalid, 1066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1016 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2023-12-21 21:35:21,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-12-21 21:35:21,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 73. [2023-12-21 21:35:21,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 54 states have (on average 1.1666666666666667) internal successors, (63), 56 states have internal predecessors, (63), 11 states have call successors, (11), 5 states have call predecessors, (11), 7 states have return successors, (13), 11 states have call predecessors, (13), 10 states have call successors, (13) [2023-12-21 21:35:21,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 87 transitions. [2023-12-21 21:35:21,546 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 87 transitions. Word has length 80 [2023-12-21 21:35:21,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:35:21,547 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 87 transitions. [2023-12-21 21:35:21,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 43 states have (on average 1.558139534883721) internal successors, (67), 45 states have internal predecessors, (67), 12 states have call successors, (15), 2 states have call predecessors, (15), 5 states have return successors, (15), 13 states have call predecessors, (15), 11 states have call successors, (15) [2023-12-21 21:35:21,547 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 87 transitions. [2023-12-21 21:35:21,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-21 21:35:21,547 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:35:21,547 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 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] [2023-12-21 21:35:21,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2023-12-21 21:35:21,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:35:21,749 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:35:21,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:35:21,750 INFO L85 PathProgramCache]: Analyzing trace with hash -719288177, now seen corresponding path program 2 times [2023-12-21 21:35:21,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:35:21,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [723127622] [2023-12-21 21:35:21,750 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 21:35:21,750 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 [2023-12-21 21:35:21,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:35:21,751 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:35:21,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2023-12-21 21:35:22,279 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 21:35:22,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 21:35:22,286 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-21 21:35:22,288 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:35:24,567 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-21 21:35:24,567 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 21:35:32,494 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 8 proven. 13 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-12-21 21:35:32,495 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:35:32,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [723127622] [2023-12-21 21:35:32,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [723127622] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 21:35:32,495 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 21:35:32,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25] total 49 [2023-12-21 21:35:32,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790284595] [2023-12-21 21:35:32,495 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 21:35:32,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-12-21 21:35:32,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:35:32,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-12-21 21:35:32,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=2179, Unknown=0, NotChecked=0, Total=2352 [2023-12-21 21:35:32,496 INFO L87 Difference]: Start difference. First operand 73 states and 87 transitions. Second operand has 49 states, 43 states have (on average 1.558139534883721) internal successors, (67), 45 states have internal predecessors, (67), 12 states have call successors, (15), 2 states have call predecessors, (15), 5 states have return successors, (15), 13 states have call predecessors, (15), 11 states have call successors, (15) [2023-12-21 21:35:53,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:35:53,158 INFO L93 Difference]: Finished difference Result 82 states and 95 transitions. [2023-12-21 21:35:53,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-21 21:35:53,159 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 43 states have (on average 1.558139534883721) internal successors, (67), 45 states have internal predecessors, (67), 12 states have call successors, (15), 2 states have call predecessors, (15), 5 states have return successors, (15), 13 states have call predecessors, (15), 11 states have call successors, (15) Word has length 80 [2023-12-21 21:35:53,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:35:53,160 INFO L225 Difference]: With dead ends: 82 [2023-12-21 21:35:53,160 INFO L226 Difference]: Without dead ends: 59 [2023-12-21 21:35:53,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 732 ImplicationChecksByTransitivity, 20.2s TimeCoverageRelationStatistics Valid=477, Invalid=4779, Unknown=0, NotChecked=0, Total=5256 [2023-12-21 21:35:53,161 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 120 mSDsluCounter, 980 mSDsCounter, 0 mSdLazyCounter, 1035 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 1026 SdHoareTripleChecker+Invalid, 1096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2023-12-21 21:35:53,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 1026 Invalid, 1096 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1035 Invalid, 0 Unknown, 0 Unchecked, 9.0s Time] [2023-12-21 21:35:53,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-12-21 21:35:53,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2023-12-21 21:35:53,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 43 states have (on average 1.1627906976744187) internal successors, (50), 45 states have internal predecessors, (50), 9 states have call successors, (9), 5 states have call predecessors, (9), 6 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2023-12-21 21:35:53,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 68 transitions. [2023-12-21 21:35:53,168 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 68 transitions. Word has length 80 [2023-12-21 21:35:53,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:35:53,168 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 68 transitions. [2023-12-21 21:35:53,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 43 states have (on average 1.558139534883721) internal successors, (67), 45 states have internal predecessors, (67), 12 states have call successors, (15), 2 states have call predecessors, (15), 5 states have return successors, (15), 13 states have call predecessors, (15), 11 states have call successors, (15) [2023-12-21 21:35:53,168 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 68 transitions. [2023-12-21 21:35:53,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-21 21:35:53,169 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:35:53,169 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 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] [2023-12-21 21:35:53,172 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2023-12-21 21:35:53,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:35:53,369 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:35:53,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:35:53,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1048343867, now seen corresponding path program 1 times [2023-12-21 21:35:53,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:35:53,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [258783069] [2023-12-21 21:35:53,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:35:53,370 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 [2023-12-21 21:35:53,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:35:53,371 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:35:53,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2023-12-21 21:35:53,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:35:53,434 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-21 21:35:53,435 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:35:53,793 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-12-21 21:35:53,793 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:35:53,793 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:35:53,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [258783069] [2023-12-21 21:35:53,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [258783069] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:35:53,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:35:53,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-12-21 21:35:53,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95974722] [2023-12-21 21:35:53,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:35:53,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 21:35:53,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:35:53,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 21:35:53,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-12-21 21:35:53,794 INFO L87 Difference]: Start difference. First operand 59 states and 68 transitions. Second operand has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 states have internal predecessors, (42), 7 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) [2023-12-21 21:35:54,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:35:54,655 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2023-12-21 21:35:54,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 21:35:54,656 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 states have internal predecessors, (42), 7 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) Word has length 81 [2023-12-21 21:35:54,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:35:54,656 INFO L225 Difference]: With dead ends: 59 [2023-12-21 21:35:54,656 INFO L226 Difference]: Without dead ends: 0 [2023-12-21 21:35:54,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=96, Invalid=324, Unknown=0, NotChecked=0, Total=420 [2023-12-21 21:35:54,657 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 31 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 21:35:54,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 349 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 21:35:54,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-21 21:35:54,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-21 21:35:54,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 21:35:54,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-21 21:35:54,657 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 81 [2023-12-21 21:35:54,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:35:54,657 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-21 21:35:54,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 states have internal predecessors, (42), 7 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) [2023-12-21 21:35:54,657 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-21 21:35:54,657 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-21 21:35:54,659 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 21:35:54,662 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2023-12-21 21:35:54,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:35:54,864 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-21 21:36:25,051 WARN L293 SmtUtils]: Spent 28.19s on a formula simplification. DAG size of input: 359 DAG size of output: 421 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-21 21:36:35,868 WARN L293 SmtUtils]: Spent 10.82s on a formula simplification. DAG size of input: 281 DAG size of output: 316 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-21 21:37:51,392 WARN L293 SmtUtils]: Spent 1.26m on a formula simplification. DAG size of input: 432 DAG size of output: 482 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-21 21:38:07,345 WARN L293 SmtUtils]: Spent 15.95s on a formula simplification. DAG size of input: 323 DAG size of output: 320 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-21 21:38:24,858 WARN L293 SmtUtils]: Spent 17.51s on a formula simplification. DAG size of input: 364 DAG size of output: 370 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-21 21:38:42,560 WARN L293 SmtUtils]: Spent 17.70s on a formula simplification. DAG size of input: 449 DAG size of output: 403 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-21 21:39:06,979 WARN L293 SmtUtils]: Spent 21.91s on a formula simplification. DAG size of input: 450 DAG size of output: 399 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-21 21:39:39,293 WARN L293 SmtUtils]: Spent 32.30s on a formula simplification. DAG size of input: 373 DAG size of output: 55 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) Received shutdown request... [2023-12-21 21:45:33,827 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 [2023-12-21 21:45:35,001 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Not enough levels on assertion stack at de.uni_freiburg.informatik.ultimate.logic.NoopScript.pop(NoopScript.java:272) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:138) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.UndoableWrapperScript.pop(UndoableWrapperScript.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.UndoableWrapperScript.restore(UndoableWrapperScript.java:87) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:233) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:324) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:316) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter(HoareAnnotationComposer.java:149) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.(HoareAnnotationComposer.java:105) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.computeIcfgHoareAnnotation(NwaCegarLoop.java:539) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop$CegarLoopResultBuilder.getResult(AbstractCegarLoop.java:873) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:416) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-12-21 21:45:35,005 INFO L158 Benchmark]: Toolchain (without parser) took 882494.39ms. Allocated memory was 194.0MB in the beginning and 750.8MB in the end (delta: 556.8MB). Free memory was 140.8MB in the beginning and 585.1MB in the end (delta: -444.3MB). Peak memory consumption was 434.4MB. Max. memory is 8.0GB. [2023-12-21 21:45:35,005 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 194.0MB. Free memory is still 141.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 21:45:35,005 INFO L158 Benchmark]: CACSL2BoogieTranslator took 244.13ms. Allocated memory is still 194.0MB. Free memory was 140.3MB in the beginning and 126.6MB in the end (delta: 13.7MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-21 21:45:35,005 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.39ms. Allocated memory is still 194.0MB. Free memory was 126.6MB in the beginning and 125.0MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-21 21:45:35,005 INFO L158 Benchmark]: Boogie Preprocessor took 33.17ms. Allocated memory is still 194.0MB. Free memory was 125.0MB in the beginning and 123.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 21:45:35,005 INFO L158 Benchmark]: RCFGBuilder took 374.45ms. Allocated memory is still 194.0MB. Free memory was 123.0MB in the beginning and 106.2MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-12-21 21:45:35,005 INFO L158 Benchmark]: TraceAbstraction took 881808.40ms. Allocated memory was 194.0MB in the beginning and 750.8MB in the end (delta: 556.8MB). Free memory was 105.6MB in the beginning and 585.1MB in the end (delta: -479.5MB). Peak memory consumption was 398.7MB. Max. memory is 8.0GB. [2023-12-21 21:45:35,006 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 194.0MB. Free memory is still 141.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 244.13ms. Allocated memory is still 194.0MB. Free memory was 140.3MB in the beginning and 126.6MB in the end (delta: 13.7MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 28.39ms. Allocated memory is still 194.0MB. Free memory was 126.6MB in the beginning and 125.0MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 33.17ms. Allocated memory is still 194.0MB. Free memory was 125.0MB in the beginning and 123.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 374.45ms. Allocated memory is still 194.0MB. Free memory was 123.0MB in the beginning and 106.2MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * TraceAbstraction took 881808.40ms. Allocated memory was 194.0MB in the beginning and 750.8MB in the end (delta: 556.8MB). Free memory was 105.6MB in the beginning and 585.1MB in the end (delta: -479.5MB). Peak memory consumption was 398.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: Not enough levels on assertion stack de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Not enough levels on assertion stack: de.uni_freiburg.informatik.ultimate.logic.NoopScript.pop(NoopScript.java:272) RESULT: Ultimate could not prove your program: Toolchain returned no result. Completed graceful shutdown