/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label50.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-22 12:43:51,055 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-22 12:43:51,120 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-22 12:43:51,125 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-22 12:43:51,126 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-22 12:43:51,146 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-22 12:43:51,147 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-22 12:43:51,147 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-22 12:43:51,147 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-22 12:43:51,150 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-22 12:43:51,150 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-22 12:43:51,151 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-22 12:43:51,151 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-22 12:43:51,152 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-22 12:43:51,152 INFO L153 SettingsManager]: * Use SBE=true [2023-12-22 12:43:51,153 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-22 12:43:51,153 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-22 12:43:51,153 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-22 12:43:51,153 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-22 12:43:51,154 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-22 12:43:51,154 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-22 12:43:51,154 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-22 12:43:51,154 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-22 12:43:51,154 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-22 12:43:51,155 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-22 12:43:51,155 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-22 12:43:51,155 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-22 12:43:51,155 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-22 12:43:51,155 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-22 12:43:51,155 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-22 12:43:51,156 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-22 12:43:51,156 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-22 12:43:51,156 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-22 12:43:51,156 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-22 12:43:51,156 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 12:43:51,156 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-22 12:43:51,157 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-22 12:43:51,157 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-22 12:43:51,157 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-22 12:43:51,157 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-22 12:43:51,157 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-22 12:43:51,157 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-22 12:43:51,157 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-22 12:43:51,157 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-22 12:43:51,158 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-22 12:43:51,158 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-22 12:43:51,158 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-22 12:43:51,347 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-22 12:43:51,361 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-22 12:43:51,363 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-22 12:43:51,363 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-22 12:43:51,364 INFO L274 PluginConnector]: CDTParser initialized [2023-12-22 12:43:51,365 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label50.c [2023-12-22 12:43:52,298 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-22 12:43:52,548 INFO L384 CDTParser]: Found 1 translation units. [2023-12-22 12:43:52,549 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label50.c [2023-12-22 12:43:52,563 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d09d785a9/6cd7d6e0d6bd48b7aa65807ca70a518f/FLAGb1cbb4264 [2023-12-22 12:43:52,573 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d09d785a9/6cd7d6e0d6bd48b7aa65807ca70a518f [2023-12-22 12:43:52,575 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-22 12:43:52,576 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-22 12:43:52,578 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-22 12:43:52,578 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-22 12:43:52,581 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-22 12:43:52,581 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:43:52" (1/1) ... [2023-12-22 12:43:52,582 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a94b80a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:43:52, skipping insertion in model container [2023-12-22 12:43:52,582 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:43:52" (1/1) ... [2023-12-22 12:43:52,621 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-22 12:43:52,780 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label50.c[3933,3946] [2023-12-22 12:43:52,954 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 12:43:52,963 INFO L202 MainTranslator]: Completed pre-run [2023-12-22 12:43:52,977 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label50.c[3933,3946] [2023-12-22 12:43:53,042 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 12:43:53,052 INFO L206 MainTranslator]: Completed translation [2023-12-22 12:43:53,053 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:43:53 WrapperNode [2023-12-22 12:43:53,053 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-22 12:43:53,054 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-22 12:43:53,054 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-22 12:43:53,054 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-22 12:43:53,059 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:43:53" (1/1) ... [2023-12-22 12:43:53,075 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:43:53" (1/1) ... [2023-12-22 12:43:53,125 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 857 [2023-12-22 12:43:53,125 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-22 12:43:53,126 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-22 12:43:53,126 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-22 12:43:53,126 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-22 12:43:53,133 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:43:53" (1/1) ... [2023-12-22 12:43:53,134 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:43:53" (1/1) ... [2023-12-22 12:43:53,157 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:43:53" (1/1) ... [2023-12-22 12:43:53,184 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-22 12:43:53,184 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:43:53" (1/1) ... [2023-12-22 12:43:53,185 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:43:53" (1/1) ... [2023-12-22 12:43:53,205 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:43:53" (1/1) ... [2023-12-22 12:43:53,210 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:43:53" (1/1) ... [2023-12-22 12:43:53,216 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:43:53" (1/1) ... [2023-12-22 12:43:53,225 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:43:53" (1/1) ... [2023-12-22 12:43:53,231 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-22 12:43:53,232 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-22 12:43:53,232 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-22 12:43:53,232 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-22 12:43:53,232 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:43:53" (1/1) ... [2023-12-22 12:43:53,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 12:43:53,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-22 12:43:53,256 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-22 12:43:53,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-22 12:43:53,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-22 12:43:53,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-22 12:43:53,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-22 12:43:53,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-22 12:43:53,353 INFO L241 CfgBuilder]: Building ICFG [2023-12-22 12:43:53,354 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-22 12:43:55,729 INFO L282 CfgBuilder]: Performing block encoding [2023-12-22 12:43:55,778 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-22 12:43:55,778 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-22 12:43:55,778 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:43:55 BoogieIcfgContainer [2023-12-22 12:43:55,778 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-22 12:43:55,780 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-22 12:43:55,780 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-22 12:43:55,782 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-22 12:43:55,782 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 12:43:52" (1/3) ... [2023-12-22 12:43:55,783 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@156d00a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:43:55, skipping insertion in model container [2023-12-22 12:43:55,783 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:43:53" (2/3) ... [2023-12-22 12:43:55,783 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@156d00a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:43:55, skipping insertion in model container [2023-12-22 12:43:55,783 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:43:55" (3/3) ... [2023-12-22 12:43:55,785 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label50.c [2023-12-22 12:43:55,796 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-22 12:43:55,797 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-22 12:43:55,841 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-22 12:43:55,846 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;@32cb8531, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-22 12:43:55,846 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-22 12:43:55,852 INFO L276 IsEmpty]: Start isEmpty. Operand has 183 states, 181 states have (on average 1.988950276243094) internal successors, (360), 182 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:43:55,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-22 12:43:55,856 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 12:43:55,856 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 12:43:55,857 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 12:43:55,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 12:43:55,860 INFO L85 PathProgramCache]: Analyzing trace with hash 758676237, now seen corresponding path program 1 times [2023-12-22 12:43:55,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 12:43:55,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1494135695] [2023-12-22 12:43:55,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 12:43:55,869 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 12:43:55,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 12:43:55,871 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 12:43:55,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-22 12:43:55,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 12:43:55,915 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-22 12:43:55,921 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 12:43:55,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 12:43:55,941 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 12:43:55,941 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 12:43:55,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1494135695] [2023-12-22 12:43:55,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1494135695] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 12:43:55,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 12:43:55,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 12:43:55,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187726080] [2023-12-22 12:43:55,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 12:43:55,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-22 12:43:55,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 12:43:55,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-22 12:43:55,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-22 12:43:55,982 INFO L87 Difference]: Start difference. First operand has 183 states, 181 states have (on average 1.988950276243094) internal successors, (360), 182 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:43:56,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 12:43:56,015 INFO L93 Difference]: Finished difference Result 365 states and 719 transitions. [2023-12-22 12:43:56,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-22 12:43:56,022 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2023-12-22 12:43:56,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 12:43:56,028 INFO L225 Difference]: With dead ends: 365 [2023-12-22 12:43:56,029 INFO L226 Difference]: Without dead ends: 181 [2023-12-22 12:43:56,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-22 12:43:56,034 INFO L413 NwaCegarLoop]: 295 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-22 12:43:56,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 295 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-22 12:43:56,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2023-12-22 12:43:56,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2023-12-22 12:43:56,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 1.6388888888888888) internal successors, (295), 180 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:43:56,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 295 transitions. [2023-12-22 12:43:56,065 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 295 transitions. Word has length 36 [2023-12-22 12:43:56,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 12:43:56,065 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 295 transitions. [2023-12-22 12:43:56,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:43:56,065 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 295 transitions. [2023-12-22 12:43:56,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-22 12:43:56,066 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 12:43:56,066 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 12:43:56,070 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-22 12:43:56,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 12:43:56,271 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 12:43:56,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 12:43:56,271 INFO L85 PathProgramCache]: Analyzing trace with hash 955388277, now seen corresponding path program 1 times [2023-12-22 12:43:56,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 12:43:56,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2079934712] [2023-12-22 12:43:56,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 12:43:56,273 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 12:43:56,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 12:43:56,274 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 12:43:56,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-22 12:43:56,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 12:43:56,311 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 12:43:56,313 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 12:43:56,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 12:43:56,405 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 12:43:56,405 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 12:43:56,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2079934712] [2023-12-22 12:43:56,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2079934712] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 12:43:56,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 12:43:56,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 12:43:56,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290673484] [2023-12-22 12:43:56,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 12:43:56,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 12:43:56,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 12:43:56,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 12:43:56,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 12:43:56,407 INFO L87 Difference]: Start difference. First operand 181 states and 295 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:43:59,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 12:43:59,333 INFO L93 Difference]: Finished difference Result 539 states and 882 transitions. [2023-12-22 12:43:59,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 12:43:59,334 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2023-12-22 12:43:59,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 12:43:59,336 INFO L225 Difference]: With dead ends: 539 [2023-12-22 12:43:59,336 INFO L226 Difference]: Without dead ends: 359 [2023-12-22 12:43:59,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 12:43:59,338 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 154 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-22 12:43:59,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 64 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-22 12:43:59,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2023-12-22 12:43:59,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 359. [2023-12-22 12:43:59,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 358 states have (on average 1.488826815642458) internal successors, (533), 358 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:43:59,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 533 transitions. [2023-12-22 12:43:59,353 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 533 transitions. Word has length 36 [2023-12-22 12:43:59,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 12:43:59,353 INFO L495 AbstractCegarLoop]: Abstraction has 359 states and 533 transitions. [2023-12-22 12:43:59,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:43:59,353 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 533 transitions. [2023-12-22 12:43:59,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-22 12:43:59,355 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 12:43:59,355 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 12:43:59,362 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-12-22 12:43:59,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 12:43:59,560 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 12:43:59,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 12:43:59,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1847718856, now seen corresponding path program 1 times [2023-12-22 12:43:59,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 12:43:59,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1316716363] [2023-12-22 12:43:59,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 12:43:59,562 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 12:43:59,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 12:43:59,563 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 12:43:59,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-22 12:43:59,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 12:43:59,626 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 12:43:59,628 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 12:43:59,775 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 12:43:59,776 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 12:43:59,776 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 12:43:59,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1316716363] [2023-12-22 12:43:59,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1316716363] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 12:43:59,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 12:43:59,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 12:43:59,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846750313] [2023-12-22 12:43:59,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 12:43:59,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 12:43:59,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 12:43:59,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 12:43:59,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 12:43:59,783 INFO L87 Difference]: Start difference. First operand 359 states and 533 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 2 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:44:03,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 12:44:03,091 INFO L93 Difference]: Finished difference Result 1073 states and 1596 transitions. [2023-12-22 12:44:03,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 12:44:03,092 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 2 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2023-12-22 12:44:03,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 12:44:03,095 INFO L225 Difference]: With dead ends: 1073 [2023-12-22 12:44:03,095 INFO L226 Difference]: Without dead ends: 715 [2023-12-22 12:44:03,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 12:44:03,097 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 116 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-22 12:44:03,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 99 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-22 12:44:03,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2023-12-22 12:44:03,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 715. [2023-12-22 12:44:03,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 715 states, 714 states have (on average 1.3473389355742298) internal successors, (962), 714 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:44:03,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 962 transitions. [2023-12-22 12:44:03,118 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 962 transitions. Word has length 101 [2023-12-22 12:44:03,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 12:44:03,118 INFO L495 AbstractCegarLoop]: Abstraction has 715 states and 962 transitions. [2023-12-22 12:44:03,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 2 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:44:03,118 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 962 transitions. [2023-12-22 12:44:03,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-22 12:44:03,120 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 12:44:03,121 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 12:44:03,125 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 (4)] Forceful destruction successful, exit code 0 [2023-12-22 12:44:03,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 12:44:03,325 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 12:44:03,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 12:44:03,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1695573386, now seen corresponding path program 1 times [2023-12-22 12:44:03,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 12:44:03,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [96482960] [2023-12-22 12:44:03,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 12:44:03,327 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 12:44:03,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 12:44:03,328 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 12:44:03,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-22 12:44:03,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 12:44:03,368 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 12:44:03,370 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 12:44:03,482 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-22 12:44:03,482 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 12:44:03,482 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 12:44:03,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [96482960] [2023-12-22 12:44:03,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [96482960] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 12:44:03,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 12:44:03,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 12:44:03,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588657117] [2023-12-22 12:44:03,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 12:44:03,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 12:44:03,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 12:44:03,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 12:44:03,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 12:44:03,484 INFO L87 Difference]: Start difference. First operand 715 states and 962 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:44:06,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 12:44:06,393 INFO L93 Difference]: Finished difference Result 1963 states and 2656 transitions. [2023-12-22 12:44:06,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 12:44:06,394 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2023-12-22 12:44:06,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 12:44:06,398 INFO L225 Difference]: With dead ends: 1963 [2023-12-22 12:44:06,398 INFO L226 Difference]: Without dead ends: 1249 [2023-12-22 12:44:06,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 12:44:06,399 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 129 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-22 12:44:06,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 87 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-22 12:44:06,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1249 states. [2023-12-22 12:44:06,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1249 to 1249. [2023-12-22 12:44:06,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1249 states, 1248 states have (on average 1.2467948717948718) internal successors, (1556), 1248 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:44:06,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1249 states to 1249 states and 1556 transitions. [2023-12-22 12:44:06,422 INFO L78 Accepts]: Start accepts. Automaton has 1249 states and 1556 transitions. Word has length 104 [2023-12-22 12:44:06,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 12:44:06,422 INFO L495 AbstractCegarLoop]: Abstraction has 1249 states and 1556 transitions. [2023-12-22 12:44:06,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:44:06,423 INFO L276 IsEmpty]: Start isEmpty. Operand 1249 states and 1556 transitions. [2023-12-22 12:44:06,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2023-12-22 12:44:06,426 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 12:44:06,426 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 12:44:06,429 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-22 12:44:06,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 12:44:06,629 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 12:44:06,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 12:44:06,629 INFO L85 PathProgramCache]: Analyzing trace with hash 189948607, now seen corresponding path program 1 times [2023-12-22 12:44:06,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 12:44:06,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [971354222] [2023-12-22 12:44:06,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 12:44:06,631 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 12:44:06,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 12:44:06,632 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 12:44:06,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-22 12:44:06,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 12:44:06,711 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-22 12:44:06,714 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 12:44:07,438 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-22 12:44:07,438 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 12:44:07,438 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 12:44:07,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [971354222] [2023-12-22 12:44:07,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [971354222] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 12:44:07,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 12:44:07,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 12:44:07,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348466334] [2023-12-22 12:44:07,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 12:44:07,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 12:44:07,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 12:44:07,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 12:44:07,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 12:44:07,440 INFO L87 Difference]: Start difference. First operand 1249 states and 1556 transitions. Second operand has 4 states, 4 states have (on average 45.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:44:10,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 12:44:10,072 INFO L93 Difference]: Finished difference Result 2170 states and 2742 transitions. [2023-12-22 12:44:10,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 12:44:10,072 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2023-12-22 12:44:10,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 12:44:10,075 INFO L225 Difference]: With dead ends: 2170 [2023-12-22 12:44:10,075 INFO L226 Difference]: Without dead ends: 1071 [2023-12-22 12:44:10,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 12:44:10,077 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 101 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 800 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-22 12:44:10,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 111 Invalid, 809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 800 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-22 12:44:10,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1071 states. [2023-12-22 12:44:10,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1071 to 1071. [2023-12-22 12:44:10,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1071 states, 1070 states have (on average 1.2401869158878505) internal successors, (1327), 1070 states have internal predecessors, (1327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:44:10,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 1327 transitions. [2023-12-22 12:44:10,091 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 1327 transitions. Word has length 185 [2023-12-22 12:44:10,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 12:44:10,091 INFO L495 AbstractCegarLoop]: Abstraction has 1071 states and 1327 transitions. [2023-12-22 12:44:10,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:44:10,092 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 1327 transitions. [2023-12-22 12:44:10,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-12-22 12:44:10,098 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 12:44:10,103 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 12:44:10,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-22 12:44:10,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 12:44:10,307 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 12:44:10,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 12:44:10,308 INFO L85 PathProgramCache]: Analyzing trace with hash -551159138, now seen corresponding path program 1 times [2023-12-22 12:44:10,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 12:44:10,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [503070189] [2023-12-22 12:44:10,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 12:44:10,309 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 12:44:10,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 12:44:10,310 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 12:44:10,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-22 12:44:10,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 12:44:10,385 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 12:44:10,387 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 12:44:11,045 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-12-22 12:44:11,045 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 12:44:11,045 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 12:44:11,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [503070189] [2023-12-22 12:44:11,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [503070189] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 12:44:11,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 12:44:11,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 12:44:11,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976493450] [2023-12-22 12:44:11,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 12:44:11,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 12:44:11,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 12:44:11,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 12:44:11,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 12:44:11,047 INFO L87 Difference]: Start difference. First operand 1071 states and 1327 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 2 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:44:13,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 12:44:13,176 INFO L93 Difference]: Finished difference Result 1785 states and 2288 transitions. [2023-12-22 12:44:13,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 12:44:13,177 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 2 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 211 [2023-12-22 12:44:13,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 12:44:13,180 INFO L225 Difference]: With dead ends: 1785 [2023-12-22 12:44:13,180 INFO L226 Difference]: Without dead ends: 1071 [2023-12-22 12:44:13,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 12:44:13,181 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 73 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-22 12:44:13,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 121 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-22 12:44:13,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1071 states. [2023-12-22 12:44:13,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1071 to 1071. [2023-12-22 12:44:13,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1071 states, 1070 states have (on average 1.2345794392523364) internal successors, (1321), 1070 states have internal predecessors, (1321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:44:13,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 1321 transitions. [2023-12-22 12:44:13,196 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 1321 transitions. Word has length 211 [2023-12-22 12:44:13,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 12:44:13,196 INFO L495 AbstractCegarLoop]: Abstraction has 1071 states and 1321 transitions. [2023-12-22 12:44:13,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 2 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:44:13,196 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 1321 transitions. [2023-12-22 12:44:13,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2023-12-22 12:44:13,198 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 12:44:13,199 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 12:44:13,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-22 12:44:13,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 12:44:13,412 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 12:44:13,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 12:44:13,412 INFO L85 PathProgramCache]: Analyzing trace with hash 32466893, now seen corresponding path program 1 times [2023-12-22 12:44:13,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 12:44:13,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [919642539] [2023-12-22 12:44:13,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 12:44:13,414 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 12:44:13,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 12:44:13,415 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 12:44:13,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-22 12:44:13,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 12:44:13,528 INFO L262 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 12:44:13,531 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 12:44:13,892 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 104 proven. 135 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2023-12-22 12:44:13,892 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 12:44:14,495 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 239 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2023-12-22 12:44:14,495 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 12:44:14,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [919642539] [2023-12-22 12:44:14,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [919642539] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-22 12:44:14,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-22 12:44:14,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-22 12:44:14,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334337370] [2023-12-22 12:44:14,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 12:44:14,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 12:44:14,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 12:44:14,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 12:44:14,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-22 12:44:14,497 INFO L87 Difference]: Start difference. First operand 1071 states and 1321 transitions. Second operand has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:44:20,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 12:44:20,833 INFO L93 Difference]: Finished difference Result 2141 states and 2813 transitions. [2023-12-22 12:44:20,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 12:44:20,834 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 315 [2023-12-22 12:44:20,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 12:44:20,838 INFO L225 Difference]: With dead ends: 2141 [2023-12-22 12:44:20,838 INFO L226 Difference]: Without dead ends: 1427 [2023-12-22 12:44:20,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 628 GetRequests, 625 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-22 12:44:20,839 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 132 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-12-22 12:44:20,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 57 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2023-12-22 12:44:20,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1427 states. [2023-12-22 12:44:20,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1427 to 1427. [2023-12-22 12:44:20,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1427 states, 1426 states have (on average 1.2391304347826086) internal successors, (1767), 1426 states have internal predecessors, (1767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:44:20,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1427 states to 1427 states and 1767 transitions. [2023-12-22 12:44:20,857 INFO L78 Accepts]: Start accepts. Automaton has 1427 states and 1767 transitions. Word has length 315 [2023-12-22 12:44:20,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 12:44:20,857 INFO L495 AbstractCegarLoop]: Abstraction has 1427 states and 1767 transitions. [2023-12-22 12:44:20,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:44:20,858 INFO L276 IsEmpty]: Start isEmpty. Operand 1427 states and 1767 transitions. [2023-12-22 12:44:20,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2023-12-22 12:44:20,861 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 12:44:20,861 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 12:44:20,868 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-12-22 12:44:21,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 12:44:21,067 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 12:44:21,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 12:44:21,068 INFO L85 PathProgramCache]: Analyzing trace with hash 909715079, now seen corresponding path program 1 times [2023-12-22 12:44:21,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 12:44:21,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1054344807] [2023-12-22 12:44:21,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 12:44:21,070 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 12:44:21,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 12:44:21,071 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 12:44:21,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-22 12:44:21,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 12:44:21,203 INFO L262 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 12:44:21,212 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 12:44:21,581 INFO L134 CoverageAnalysis]: Checked inductivity of 679 backedges. 381 proven. 159 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2023-12-22 12:44:21,582 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 12:44:22,023 INFO L134 CoverageAnalysis]: Checked inductivity of 679 backedges. 540 proven. 0 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2023-12-22 12:44:22,024 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 12:44:22,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1054344807] [2023-12-22 12:44:22,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1054344807] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-22 12:44:22,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-22 12:44:22,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-22 12:44:22,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320373135] [2023-12-22 12:44:22,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 12:44:22,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 12:44:22,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 12:44:22,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 12:44:22,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-22 12:44:22,026 INFO L87 Difference]: Start difference. First operand 1427 states and 1767 transitions. Second operand has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:44:27,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 12:44:27,621 INFO L93 Difference]: Finished difference Result 3209 states and 4152 transitions. [2023-12-22 12:44:27,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 12:44:27,622 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 426 [2023-12-22 12:44:27,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 12:44:27,627 INFO L225 Difference]: With dead ends: 3209 [2023-12-22 12:44:27,627 INFO L226 Difference]: Without dead ends: 2139 [2023-12-22 12:44:27,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 850 GetRequests, 847 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-22 12:44:27,629 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 113 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-12-22 12:44:27,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 245 Invalid, 616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2023-12-22 12:44:27,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2139 states. [2023-12-22 12:44:27,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2139 to 2139. [2023-12-22 12:44:27,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2139 states, 2138 states have (on average 1.2474275023386343) internal successors, (2667), 2138 states have internal predecessors, (2667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:44:27,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2139 states to 2139 states and 2667 transitions. [2023-12-22 12:44:27,657 INFO L78 Accepts]: Start accepts. Automaton has 2139 states and 2667 transitions. Word has length 426 [2023-12-22 12:44:27,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 12:44:27,657 INFO L495 AbstractCegarLoop]: Abstraction has 2139 states and 2667 transitions. [2023-12-22 12:44:27,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:44:27,658 INFO L276 IsEmpty]: Start isEmpty. Operand 2139 states and 2667 transitions. [2023-12-22 12:44:27,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2023-12-22 12:44:27,662 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 12:44:27,662 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 12:44:27,666 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 (9)] Forceful destruction successful, exit code 0 [2023-12-22 12:44:27,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 12:44:27,866 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 12:44:27,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 12:44:27,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1775228767, now seen corresponding path program 1 times [2023-12-22 12:44:27,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 12:44:27,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [44512412] [2023-12-22 12:44:27,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 12:44:27,868 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 12:44:27,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 12:44:27,869 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 12:44:27,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-22 12:44:28,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 12:44:28,008 INFO L262 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-22 12:44:28,011 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 12:44:29,141 INFO L134 CoverageAnalysis]: Checked inductivity of 727 backedges. 444 proven. 277 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-22 12:44:29,141 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 12:44:36,080 INFO L134 CoverageAnalysis]: Checked inductivity of 727 backedges. 692 proven. 29 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-22 12:44:36,080 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 12:44:36,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [44512412] [2023-12-22 12:44:36,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [44512412] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 12:44:36,080 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 12:44:36,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-12-22 12:44:36,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836882153] [2023-12-22 12:44:36,081 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 12:44:36,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-22 12:44:36,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 12:44:36,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-22 12:44:36,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-12-22 12:44:36,082 INFO L87 Difference]: Start difference. First operand 2139 states and 2667 transitions. Second operand has 9 states, 9 states have (on average 85.88888888888889) internal successors, (773), 9 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:45:08,103 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 12:45:12,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 12:45:12,789 INFO L93 Difference]: Finished difference Result 5817 states and 7414 transitions. [2023-12-22 12:45:12,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-22 12:45:12,789 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 85.88888888888889) internal successors, (773), 9 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 442 [2023-12-22 12:45:12,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 12:45:12,798 INFO L225 Difference]: With dead ends: 5817 [2023-12-22 12:45:12,798 INFO L226 Difference]: Without dead ends: 3919 [2023-12-22 12:45:12,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 884 GetRequests, 876 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-12-22 12:45:12,801 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 550 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 2743 mSolverCounterSat, 411 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 3154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 411 IncrementalHoareTripleChecker+Valid, 2743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.4s IncrementalHoareTripleChecker+Time [2023-12-22 12:45:12,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [550 Valid, 57 Invalid, 3154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [411 Valid, 2743 Invalid, 0 Unknown, 0 Unchecked, 36.4s Time] [2023-12-22 12:45:12,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3919 states. [2023-12-22 12:45:12,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3919 to 3741. [2023-12-22 12:45:12,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3741 states, 3740 states have (on average 1.1093582887700535) internal successors, (4149), 3740 states have internal predecessors, (4149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:45:12,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3741 states to 3741 states and 4149 transitions. [2023-12-22 12:45:12,869 INFO L78 Accepts]: Start accepts. Automaton has 3741 states and 4149 transitions. Word has length 442 [2023-12-22 12:45:12,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 12:45:12,870 INFO L495 AbstractCegarLoop]: Abstraction has 3741 states and 4149 transitions. [2023-12-22 12:45:12,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 85.88888888888889) internal successors, (773), 9 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:45:12,870 INFO L276 IsEmpty]: Start isEmpty. Operand 3741 states and 4149 transitions. [2023-12-22 12:45:12,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 691 [2023-12-22 12:45:12,874 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 12:45:12,874 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 12:45:12,879 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-22 12:45:13,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 12:45:13,079 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 12:45:13,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 12:45:13,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1707112241, now seen corresponding path program 1 times [2023-12-22 12:45:13,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 12:45:13,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1211875845] [2023-12-22 12:45:13,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 12:45:13,082 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 12:45:13,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 12:45:13,083 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 12:45:13,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-22 12:45:13,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 12:45:13,253 INFO L262 TraceCheckSpWp]: Trace formula consists of 764 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-22 12:45:13,259 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 12:45:19,690 INFO L134 CoverageAnalysis]: Checked inductivity of 1289 backedges. 278 proven. 898 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-12-22 12:45:19,690 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 12:45:41,063 INFO L134 CoverageAnalysis]: Checked inductivity of 1289 backedges. 908 proven. 268 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-12-22 12:45:41,064 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 12:45:41,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1211875845] [2023-12-22 12:45:41,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1211875845] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 12:45:41,064 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 12:45:41,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2023-12-22 12:45:41,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560768970] [2023-12-22 12:45:41,064 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 12:45:41,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-22 12:45:41,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 12:45:41,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-22 12:45:41,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=291, Unknown=0, NotChecked=0, Total=420 [2023-12-22 12:45:41,067 INFO L87 Difference]: Start difference. First operand 3741 states and 4149 transitions. Second operand has 21 states, 21 states have (on average 53.04761904761905) internal successors, (1114), 21 states have internal predecessors, (1114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:45:45,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 12:45:45,530 INFO L93 Difference]: Finished difference Result 7107 states and 7929 transitions. [2023-12-22 12:45:45,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-22 12:45:45,531 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 53.04761904761905) internal successors, (1114), 21 states have internal predecessors, (1114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 690 [2023-12-22 12:45:45,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 12:45:45,539 INFO L225 Difference]: With dead ends: 7107 [2023-12-22 12:45:45,539 INFO L226 Difference]: Without dead ends: 4079 [2023-12-22 12:45:45,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1378 GetRequests, 1359 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=129, Invalid=291, Unknown=0, NotChecked=0, Total=420 [2023-12-22 12:45:45,542 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 376 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 3009 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 3046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 3009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-12-22 12:45:45,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [376 Valid, 84 Invalid, 3046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 3009 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-12-22 12:45:45,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4079 states. [2023-12-22 12:45:45,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4079 to 3554. [2023-12-22 12:45:45,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3554 states, 3553 states have (on average 1.1134252744159865) internal successors, (3956), 3553 states have internal predecessors, (3956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:45:45,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3554 states to 3554 states and 3956 transitions. [2023-12-22 12:45:45,583 INFO L78 Accepts]: Start accepts. Automaton has 3554 states and 3956 transitions. Word has length 690 [2023-12-22 12:45:45,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 12:45:45,583 INFO L495 AbstractCegarLoop]: Abstraction has 3554 states and 3956 transitions. [2023-12-22 12:45:45,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 53.04761904761905) internal successors, (1114), 21 states have internal predecessors, (1114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:45:45,584 INFO L276 IsEmpty]: Start isEmpty. Operand 3554 states and 3956 transitions. [2023-12-22 12:45:45,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 709 [2023-12-22 12:45:45,588 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 12:45:45,588 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 12:45:45,593 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-22 12:45:45,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 12:45:45,793 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 12:45:45,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 12:45:45,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1951752418, now seen corresponding path program 1 times [2023-12-22 12:45:45,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 12:45:45,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1306594678] [2023-12-22 12:45:45,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 12:45:45,795 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 12:45:45,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 12:45:45,796 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 12:45:45,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-22 12:45:45,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 12:45:45,978 INFO L262 TraceCheckSpWp]: Trace formula consists of 780 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-22 12:45:45,998 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 12:45:50,329 INFO L134 CoverageAnalysis]: Checked inductivity of 1307 backedges. 748 proven. 420 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2023-12-22 12:45:50,330 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 12:46:00,855 INFO L134 CoverageAnalysis]: Checked inductivity of 1307 backedges. 1132 proven. 36 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2023-12-22 12:46:00,855 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 12:46:00,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1306594678] [2023-12-22 12:46:00,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1306594678] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 12:46:00,855 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 12:46:00,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2023-12-22 12:46:00,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430652043] [2023-12-22 12:46:00,856 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 12:46:00,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-22 12:46:00,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 12:46:00,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-22 12:46:00,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=261, Unknown=0, NotChecked=0, Total=380 [2023-12-22 12:46:00,858 INFO L87 Difference]: Start difference. First operand 3554 states and 3956 transitions. Second operand has 20 states, 20 states have (on average 47.8) internal successors, (956), 20 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:46:08,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 12:46:08,692 INFO L93 Difference]: Finished difference Result 7435 states and 8256 transitions. [2023-12-22 12:46:08,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-22 12:46:08,693 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 47.8) internal successors, (956), 20 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 708 [2023-12-22 12:46:08,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 12:46:08,701 INFO L225 Difference]: With dead ends: 7435 [2023-12-22 12:46:08,701 INFO L226 Difference]: Without dead ends: 3864 [2023-12-22 12:46:08,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1428 GetRequests, 1400 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=264, Invalid=606, Unknown=0, NotChecked=0, Total=870 [2023-12-22 12:46:08,703 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 1111 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 5189 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1111 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 5310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 5189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2023-12-22 12:46:08,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1111 Valid, 69 Invalid, 5310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 5189 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2023-12-22 12:46:08,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3864 states. [2023-12-22 12:46:08,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3864 to 3531. [2023-12-22 12:46:08,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3531 states, 3530 states have (on average 1.0878186968838528) internal successors, (3840), 3530 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:46:08,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3531 states to 3531 states and 3840 transitions. [2023-12-22 12:46:08,736 INFO L78 Accepts]: Start accepts. Automaton has 3531 states and 3840 transitions. Word has length 708 [2023-12-22 12:46:08,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 12:46:08,736 INFO L495 AbstractCegarLoop]: Abstraction has 3531 states and 3840 transitions. [2023-12-22 12:46:08,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 47.8) internal successors, (956), 20 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:46:08,737 INFO L276 IsEmpty]: Start isEmpty. Operand 3531 states and 3840 transitions. [2023-12-22 12:46:08,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 786 [2023-12-22 12:46:08,741 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 12:46:08,742 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 12:46:08,750 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-22 12:46:08,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 12:46:08,947 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 12:46:08,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 12:46:08,947 INFO L85 PathProgramCache]: Analyzing trace with hash -231298365, now seen corresponding path program 1 times [2023-12-22 12:46:08,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 12:46:08,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2068030243] [2023-12-22 12:46:08,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 12:46:08,950 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 [2023-12-22 12:46:08,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 12:46:08,951 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 12:46:08,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-22 12:46:09,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 12:46:09,134 INFO L262 TraceCheckSpWp]: Trace formula consists of 866 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-22 12:46:09,144 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 12:46:14,695 INFO L134 CoverageAnalysis]: Checked inductivity of 1726 backedges. 104 proven. 1355 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2023-12-22 12:46:14,695 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 12:46:50,074 INFO L134 CoverageAnalysis]: Checked inductivity of 1726 backedges. 1076 proven. 383 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2023-12-22 12:46:50,074 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 12:46:50,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2068030243] [2023-12-22 12:46:50,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2068030243] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 12:46:50,074 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 12:46:50,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2023-12-22 12:46:50,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426804424] [2023-12-22 12:46:50,074 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 12:46:50,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-22 12:46:50,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 12:46:50,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-22 12:46:50,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2023-12-22 12:46:50,077 INFO L87 Difference]: Start difference. First operand 3531 states and 3840 transitions. Second operand has 22 states, 22 states have (on average 51.13636363636363) internal successors, (1125), 22 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:47:08,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 12:47:08,736 INFO L93 Difference]: Finished difference Result 7678 states and 8342 transitions. [2023-12-22 12:47:08,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-22 12:47:08,737 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 51.13636363636363) internal successors, (1125), 22 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 785 [2023-12-22 12:47:08,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 12:47:08,746 INFO L225 Difference]: With dead ends: 7678 [2023-12-22 12:47:08,746 INFO L226 Difference]: Without dead ends: 4186 [2023-12-22 12:47:08,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1582 GetRequests, 1553 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=269, Invalid=661, Unknown=0, NotChecked=0, Total=930 [2023-12-22 12:47:08,748 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 875 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 7828 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 875 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 7874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 7828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.7s IncrementalHoareTripleChecker+Time [2023-12-22 12:47:08,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [875 Valid, 140 Invalid, 7874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 7828 Invalid, 0 Unknown, 0 Unchecked, 17.7s Time] [2023-12-22 12:47:08,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4186 states. [2023-12-22 12:47:08,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4186 to 3781. [2023-12-22 12:47:08,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3781 states, 3780 states have (on average 1.0835978835978837) internal successors, (4096), 3780 states have internal predecessors, (4096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:47:08,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3781 states to 3781 states and 4096 transitions. [2023-12-22 12:47:08,785 INFO L78 Accepts]: Start accepts. Automaton has 3781 states and 4096 transitions. Word has length 785 [2023-12-22 12:47:08,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 12:47:08,786 INFO L495 AbstractCegarLoop]: Abstraction has 3781 states and 4096 transitions. [2023-12-22 12:47:08,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 51.13636363636363) internal successors, (1125), 22 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:47:08,786 INFO L276 IsEmpty]: Start isEmpty. Operand 3781 states and 4096 transitions. [2023-12-22 12:47:08,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 858 [2023-12-22 12:47:08,792 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 12:47:08,792 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 12:47:08,797 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-12-22 12:47:08,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 12:47:08,998 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 12:47:08,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 12:47:08,998 INFO L85 PathProgramCache]: Analyzing trace with hash 2009939908, now seen corresponding path program 1 times [2023-12-22 12:47:09,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 12:47:09,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [771867485] [2023-12-22 12:47:09,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 12:47:09,001 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 [2023-12-22 12:47:09,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 12:47:09,002 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 12:47:09,004 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 (14)] Waiting until timeout for monitored process [2023-12-22 12:47:09,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 12:47:09,238 INFO L262 TraceCheckSpWp]: Trace formula consists of 948 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 12:47:09,244 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 12:47:09,318 INFO L134 CoverageAnalysis]: Checked inductivity of 2192 backedges. 244 proven. 0 refuted. 0 times theorem prover too weak. 1948 trivial. 0 not checked. [2023-12-22 12:47:09,319 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 12:47:09,319 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 12:47:09,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [771867485] [2023-12-22 12:47:09,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [771867485] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 12:47:09,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 12:47:09,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 12:47:09,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103091141] [2023-12-22 12:47:09,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 12:47:09,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 12:47:09,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 12:47:09,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 12:47:09,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 12:47:09,320 INFO L87 Difference]: Start difference. First operand 3781 states and 4096 transitions. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:47:11,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 12:47:11,289 INFO L93 Difference]: Finished difference Result 5029 states and 5554 transitions. [2023-12-22 12:47:11,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 12:47:11,294 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 857 [2023-12-22 12:47:11,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 12:47:11,305 INFO L225 Difference]: With dead ends: 5029 [2023-12-22 12:47:11,305 INFO L226 Difference]: Without dead ends: 5027 [2023-12-22 12:47:11,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 856 GetRequests, 855 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 12:47:11,307 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 155 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-22 12:47:11,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 206 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-22 12:47:11,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5027 states. [2023-12-22 12:47:11,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5027 to 4493. [2023-12-22 12:47:11,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4493 states, 4492 states have (on average 1.106634016028495) internal successors, (4971), 4492 states have internal predecessors, (4971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:47:11,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4493 states to 4493 states and 4971 transitions. [2023-12-22 12:47:11,362 INFO L78 Accepts]: Start accepts. Automaton has 4493 states and 4971 transitions. Word has length 857 [2023-12-22 12:47:11,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 12:47:11,362 INFO L495 AbstractCegarLoop]: Abstraction has 4493 states and 4971 transitions. [2023-12-22 12:47:11,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:47:11,363 INFO L276 IsEmpty]: Start isEmpty. Operand 4493 states and 4971 transitions. [2023-12-22 12:47:11,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 881 [2023-12-22 12:47:11,369 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 12:47:11,369 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 12:47:11,375 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-12-22 12:47:11,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 12:47:11,575 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 12:47:11,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 12:47:11,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1489326122, now seen corresponding path program 1 times [2023-12-22 12:47:11,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 12:47:11,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [821286351] [2023-12-22 12:47:11,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 12:47:11,578 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 12:47:11,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 12:47:11,579 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 12:47:11,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-22 12:47:11,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 12:47:11,858 INFO L262 TraceCheckSpWp]: Trace formula consists of 977 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 12:47:11,873 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 12:47:12,366 INFO L134 CoverageAnalysis]: Checked inductivity of 2665 backedges. 1327 proven. 0 refuted. 0 times theorem prover too weak. 1338 trivial. 0 not checked. [2023-12-22 12:47:12,366 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 12:47:12,366 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 12:47:12,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [821286351] [2023-12-22 12:47:12,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [821286351] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 12:47:12,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 12:47:12,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 12:47:12,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012955826] [2023-12-22 12:47:12,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 12:47:12,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 12:47:12,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 12:47:12,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 12:47:12,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 12:47:12,368 INFO L87 Difference]: Start difference. First operand 4493 states and 4971 transitions. Second operand has 3 states, 3 states have (on average 126.33333333333333) internal successors, (379), 3 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:47:14,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 12:47:14,033 INFO L93 Difference]: Finished difference Result 8629 states and 9590 transitions. [2023-12-22 12:47:14,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 12:47:14,033 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 126.33333333333333) internal successors, (379), 3 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 880 [2023-12-22 12:47:14,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 12:47:14,049 INFO L225 Difference]: With dead ends: 8629 [2023-12-22 12:47:14,049 INFO L226 Difference]: Without dead ends: 4671 [2023-12-22 12:47:14,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 879 GetRequests, 878 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 12:47:14,053 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 50 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-22 12:47:14,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 243 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-22 12:47:14,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4671 states. [2023-12-22 12:47:14,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4671 to 4671. [2023-12-22 12:47:14,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4671 states, 4670 states have (on average 1.1032119914346894) internal successors, (5152), 4670 states have internal predecessors, (5152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:47:14,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4671 states to 4671 states and 5152 transitions. [2023-12-22 12:47:14,092 INFO L78 Accepts]: Start accepts. Automaton has 4671 states and 5152 transitions. Word has length 880 [2023-12-22 12:47:14,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 12:47:14,092 INFO L495 AbstractCegarLoop]: Abstraction has 4671 states and 5152 transitions. [2023-12-22 12:47:14,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.33333333333333) internal successors, (379), 3 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:47:14,092 INFO L276 IsEmpty]: Start isEmpty. Operand 4671 states and 5152 transitions. [2023-12-22 12:47:14,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 883 [2023-12-22 12:47:14,098 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 12:47:14,099 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 12:47:14,108 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-12-22 12:47:14,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 12:47:14,306 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 12:47:14,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 12:47:14,306 INFO L85 PathProgramCache]: Analyzing trace with hash 58811818, now seen corresponding path program 1 times [2023-12-22 12:47:14,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 12:47:14,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2062977383] [2023-12-22 12:47:14,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 12:47:14,309 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 12:47:14,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 12:47:14,309 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 12:47:14,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-22 12:47:14,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 12:47:14,554 INFO L262 TraceCheckSpWp]: Trace formula consists of 972 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 12:47:14,561 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 12:47:15,496 INFO L134 CoverageAnalysis]: Checked inductivity of 2353 backedges. 1849 proven. 0 refuted. 0 times theorem prover too weak. 504 trivial. 0 not checked. [2023-12-22 12:47:15,497 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 12:47:15,497 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 12:47:15,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2062977383] [2023-12-22 12:47:15,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2062977383] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 12:47:15,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 12:47:15,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 12:47:15,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070394909] [2023-12-22 12:47:15,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 12:47:15,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 12:47:15,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 12:47:15,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 12:47:15,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 12:47:15,498 INFO L87 Difference]: Start difference. First operand 4671 states and 5152 transitions. Second operand has 4 states, 4 states have (on average 121.5) internal successors, (486), 4 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:47:17,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 12:47:17,877 INFO L93 Difference]: Finished difference Result 8985 states and 9952 transitions. [2023-12-22 12:47:17,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 12:47:17,881 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 121.5) internal successors, (486), 4 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 882 [2023-12-22 12:47:17,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 12:47:17,894 INFO L225 Difference]: With dead ends: 8985 [2023-12-22 12:47:17,895 INFO L226 Difference]: Without dead ends: 4849 [2023-12-22 12:47:17,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 881 GetRequests, 879 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 12:47:17,899 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 67 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 832 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 832 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-22 12:47:17,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 55 Invalid, 840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 832 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-22 12:47:17,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4849 states. [2023-12-22 12:47:17,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4849 to 4849. [2023-12-22 12:47:17,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4849 states, 4848 states have (on average 1.1000412541254125) internal successors, (5333), 4848 states have internal predecessors, (5333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:47:17,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4849 states to 4849 states and 5333 transitions. [2023-12-22 12:47:17,944 INFO L78 Accepts]: Start accepts. Automaton has 4849 states and 5333 transitions. Word has length 882 [2023-12-22 12:47:17,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 12:47:17,945 INFO L495 AbstractCegarLoop]: Abstraction has 4849 states and 5333 transitions. [2023-12-22 12:47:17,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 121.5) internal successors, (486), 4 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:47:17,945 INFO L276 IsEmpty]: Start isEmpty. Operand 4849 states and 5333 transitions. [2023-12-22 12:47:17,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 928 [2023-12-22 12:47:17,952 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 12:47:17,952 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 12:47:17,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-12-22 12:47:18,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 12:47:18,160 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 12:47:18,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 12:47:18,160 INFO L85 PathProgramCache]: Analyzing trace with hash -57796834, now seen corresponding path program 1 times [2023-12-22 12:47:18,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 12:47:18,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1209593362] [2023-12-22 12:47:18,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 12:47:18,163 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 12:47:18,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 12:47:18,163 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 12:47:18,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-12-22 12:47:18,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 12:47:18,413 INFO L262 TraceCheckSpWp]: Trace formula consists of 1027 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-22 12:47:18,420 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 12:47:21,589 INFO L134 CoverageAnalysis]: Checked inductivity of 2716 backedges. 279 proven. 2066 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2023-12-22 12:47:21,590 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 12:47:28,763 INFO L134 CoverageAnalysis]: Checked inductivity of 2716 backedges. 1678 proven. 94 refuted. 0 times theorem prover too weak. 944 trivial. 0 not checked. [2023-12-22 12:47:28,764 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 12:47:28,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1209593362] [2023-12-22 12:47:28,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1209593362] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 12:47:28,764 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 12:47:28,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2023-12-22 12:47:28,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370240108] [2023-12-22 12:47:28,764 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 12:47:28,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-22 12:47:28,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 12:47:28,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-22 12:47:28,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-12-22 12:47:28,766 INFO L87 Difference]: Start difference. First operand 4849 states and 5333 transitions. Second operand has 12 states, 12 states have (on average 93.91666666666667) internal successors, (1127), 11 states have internal predecessors, (1127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:47:45,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 12:47:45,471 INFO L93 Difference]: Finished difference Result 9945 states and 10957 transitions. [2023-12-22 12:47:45,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-22 12:47:45,472 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 93.91666666666667) internal successors, (1127), 11 states have internal predecessors, (1127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 927 [2023-12-22 12:47:45,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 12:47:45,479 INFO L225 Difference]: With dead ends: 9945 [2023-12-22 12:47:45,479 INFO L226 Difference]: Without dead ends: 5631 [2023-12-22 12:47:45,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1858 GetRequests, 1842 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2023-12-22 12:47:45,484 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 695 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 5401 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 695 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 5622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 5401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.4s IncrementalHoareTripleChecker+Time [2023-12-22 12:47:45,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [695 Valid, 103 Invalid, 5622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 5401 Invalid, 0 Unknown, 0 Unchecked, 16.4s Time] [2023-12-22 12:47:45,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5631 states. [2023-12-22 12:47:45,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5631 to 5354. [2023-12-22 12:47:45,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5354 states, 5353 states have (on average 1.076592564916869) internal successors, (5763), 5353 states have internal predecessors, (5763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:47:45,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5354 states to 5354 states and 5763 transitions. [2023-12-22 12:47:45,577 INFO L78 Accepts]: Start accepts. Automaton has 5354 states and 5763 transitions. Word has length 927 [2023-12-22 12:47:45,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 12:47:45,578 INFO L495 AbstractCegarLoop]: Abstraction has 5354 states and 5763 transitions. [2023-12-22 12:47:45,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 93.91666666666667) internal successors, (1127), 11 states have internal predecessors, (1127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:47:45,578 INFO L276 IsEmpty]: Start isEmpty. Operand 5354 states and 5763 transitions. [2023-12-22 12:47:45,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1041 [2023-12-22 12:47:45,586 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 12:47:45,587 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 12:47:45,605 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-12-22 12:47:45,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 12:47:45,806 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 12:47:45,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 12:47:45,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1420229280, now seen corresponding path program 1 times [2023-12-22 12:47:45,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 12:47:45,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [353879936] [2023-12-22 12:47:45,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 12:47:45,809 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 12:47:45,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 12:47:45,810 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 12:47:45,812 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 (18)] Waiting until timeout for monitored process [2023-12-22 12:47:46,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 12:47:46,117 INFO L262 TraceCheckSpWp]: Trace formula consists of 1138 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-22 12:47:46,124 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 12:47:49,473 INFO L134 CoverageAnalysis]: Checked inductivity of 3222 backedges. 48 proven. 2957 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2023-12-22 12:47:49,474 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 12:47:59,365 INFO L134 CoverageAnalysis]: Checked inductivity of 3222 backedges. 761 proven. 0 refuted. 0 times theorem prover too weak. 2461 trivial. 0 not checked. [2023-12-22 12:47:59,365 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 12:47:59,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [353879936] [2023-12-22 12:47:59,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [353879936] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-22 12:47:59,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-22 12:47:59,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2023-12-22 12:47:59,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110831768] [2023-12-22 12:47:59,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 12:47:59,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 12:47:59,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 12:47:59,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 12:47:59,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-12-22 12:47:59,367 INFO L87 Difference]: Start difference. First operand 5354 states and 5763 transitions. Second operand has 5 states, 5 states have (on average 56.2) internal successors, (281), 4 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:48:11,839 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 12:48:26,519 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 12:48:27,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 12:48:27,163 INFO L93 Difference]: Finished difference Result 9726 states and 10534 transitions. [2023-12-22 12:48:27,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 12:48:27,163 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 56.2) internal successors, (281), 4 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1040 [2023-12-22 12:48:27,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 12:48:27,169 INFO L225 Difference]: With dead ends: 9726 [2023-12-22 12:48:27,170 INFO L226 Difference]: Without dead ends: 5354 [2023-12-22 12:48:27,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2078 GetRequests, 2068 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-12-22 12:48:27,173 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 129 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 843 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.7s IncrementalHoareTripleChecker+Time [2023-12-22 12:48:27,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 17 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 843 Invalid, 0 Unknown, 0 Unchecked, 27.7s Time] [2023-12-22 12:48:27,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5354 states. [2023-12-22 12:48:27,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5354 to 5354. [2023-12-22 12:48:27,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5354 states, 5353 states have (on average 1.075284886979264) internal successors, (5756), 5353 states have internal predecessors, (5756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:48:27,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5354 states to 5354 states and 5756 transitions. [2023-12-22 12:48:27,221 INFO L78 Accepts]: Start accepts. Automaton has 5354 states and 5756 transitions. Word has length 1040 [2023-12-22 12:48:27,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 12:48:27,222 INFO L495 AbstractCegarLoop]: Abstraction has 5354 states and 5756 transitions. [2023-12-22 12:48:27,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 56.2) internal successors, (281), 4 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:48:27,222 INFO L276 IsEmpty]: Start isEmpty. Operand 5354 states and 5756 transitions. [2023-12-22 12:48:27,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1053 [2023-12-22 12:48:27,230 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 12:48:27,230 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 12:48:27,254 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-12-22 12:48:27,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 12:48:27,438 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 12:48:27,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 12:48:27,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1144118078, now seen corresponding path program 1 times [2023-12-22 12:48:27,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 12:48:27,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1317909629] [2023-12-22 12:48:27,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 12:48:27,441 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 12:48:27,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 12:48:27,442 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 12:48:27,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-12-22 12:48:27,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 12:48:27,715 INFO L262 TraceCheckSpWp]: Trace formula consists of 1150 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-22 12:48:27,732 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 12:48:32,522 INFO L134 CoverageAnalysis]: Checked inductivity of 3306 backedges. 48 proven. 3041 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2023-12-22 12:48:32,522 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 12:48:37,918 INFO L134 CoverageAnalysis]: Checked inductivity of 3306 backedges. 845 proven. 0 refuted. 0 times theorem prover too weak. 2461 trivial. 0 not checked. [2023-12-22 12:48:37,919 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 12:48:37,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1317909629] [2023-12-22 12:48:37,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1317909629] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-22 12:48:37,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-22 12:48:37,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2023-12-22 12:48:37,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6634823] [2023-12-22 12:48:37,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 12:48:37,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 12:48:37,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 12:48:37,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 12:48:37,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-12-22 12:48:37,920 INFO L87 Difference]: Start difference. First operand 5354 states and 5756 transitions. Second operand has 5 states, 5 states have (on average 58.6) internal successors, (293), 4 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:48:48,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 12:48:48,188 INFO L93 Difference]: Finished difference Result 9726 states and 10520 transitions. [2023-12-22 12:48:48,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 12:48:48,189 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 58.6) internal successors, (293), 4 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1052 [2023-12-22 12:48:48,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 12:48:48,194 INFO L225 Difference]: With dead ends: 9726 [2023-12-22 12:48:48,194 INFO L226 Difference]: Without dead ends: 5354 [2023-12-22 12:48:48,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2102 GetRequests, 2092 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-12-22 12:48:48,196 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 170 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2023-12-22 12:48:48,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 14 Invalid, 713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 662 Invalid, 0 Unknown, 0 Unchecked, 10.2s Time] [2023-12-22 12:48:48,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5354 states. [2023-12-22 12:48:48,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5354 to 4286. [2023-12-22 12:48:48,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4286 states, 4285 states have (on average 1.056242707117853) internal successors, (4526), 4285 states have internal predecessors, (4526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:48:48,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4286 states to 4286 states and 4526 transitions. [2023-12-22 12:48:48,234 INFO L78 Accepts]: Start accepts. Automaton has 4286 states and 4526 transitions. Word has length 1052 [2023-12-22 12:48:48,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 12:48:48,235 INFO L495 AbstractCegarLoop]: Abstraction has 4286 states and 4526 transitions. [2023-12-22 12:48:48,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 58.6) internal successors, (293), 4 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:48:48,235 INFO L276 IsEmpty]: Start isEmpty. Operand 4286 states and 4526 transitions. [2023-12-22 12:48:48,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1071 [2023-12-22 12:48:48,243 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 12:48:48,243 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 12:48:48,250 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-12-22 12:48:48,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 12:48:48,451 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 12:48:48,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 12:48:48,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1810407098, now seen corresponding path program 1 times [2023-12-22 12:48:48,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 12:48:48,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2072660094] [2023-12-22 12:48:48,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 12:48:48,454 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 12:48:48,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 12:48:48,455 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 12:48:48,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-12-22 12:48:48,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 12:48:48,693 INFO L262 TraceCheckSpWp]: Trace formula consists of 1180 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-22 12:48:48,700 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 12:48:52,431 INFO L134 CoverageAnalysis]: Checked inductivity of 3704 backedges. 406 proven. 2927 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2023-12-22 12:48:52,432 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 12:49:00,739 INFO L134 CoverageAnalysis]: Checked inductivity of 3704 backedges. 2420 proven. 340 refuted. 0 times theorem prover too weak. 944 trivial. 0 not checked. [2023-12-22 12:49:00,739 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 12:49:00,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2072660094] [2023-12-22 12:49:00,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2072660094] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 12:49:00,739 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 12:49:00,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2023-12-22 12:49:00,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573255240] [2023-12-22 12:49:00,740 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 12:49:00,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-22 12:49:00,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 12:49:00,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-22 12:49:00,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2023-12-22 12:49:00,742 INFO L87 Difference]: Start difference. First operand 4286 states and 4526 transitions. Second operand has 14 states, 14 states have (on average 100.71428571428571) internal successors, (1410), 13 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:49:13,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 12:49:13,581 INFO L93 Difference]: Finished difference Result 8157 states and 8660 transitions. [2023-12-22 12:49:13,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-22 12:49:13,582 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 100.71428571428571) internal successors, (1410), 13 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1070 [2023-12-22 12:49:13,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 12:49:13,587 INFO L225 Difference]: With dead ends: 8157 [2023-12-22 12:49:13,588 INFO L226 Difference]: Without dead ends: 4911 [2023-12-22 12:49:13,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2145 GetRequests, 2126 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=118, Invalid=302, Unknown=0, NotChecked=0, Total=420 [2023-12-22 12:49:13,590 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 576 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 9266 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 576 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 9387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 9266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2023-12-22 12:49:13,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [576 Valid, 167 Invalid, 9387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 9266 Invalid, 0 Unknown, 0 Unchecked, 12.5s Time] [2023-12-22 12:49:13,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4911 states. [2023-12-22 12:49:13,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4911 to 4464. [2023-12-22 12:49:13,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4464 states, 4463 states have (on average 1.0542236164015237) internal successors, (4705), 4463 states have internal predecessors, (4705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:49:13,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4464 states to 4464 states and 4705 transitions. [2023-12-22 12:49:13,628 INFO L78 Accepts]: Start accepts. Automaton has 4464 states and 4705 transitions. Word has length 1070 [2023-12-22 12:49:13,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 12:49:13,628 INFO L495 AbstractCegarLoop]: Abstraction has 4464 states and 4705 transitions. [2023-12-22 12:49:13,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 100.71428571428571) internal successors, (1410), 13 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:49:13,629 INFO L276 IsEmpty]: Start isEmpty. Operand 4464 states and 4705 transitions. [2023-12-22 12:49:13,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1082 [2023-12-22 12:49:13,637 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 12:49:13,637 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 12:49:13,654 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 [2023-12-22 12:49:13,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 12:49:13,843 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 12:49:13,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 12:49:13,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1238576869, now seen corresponding path program 1 times [2023-12-22 12:49:13,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 12:49:13,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1452053269] [2023-12-22 12:49:13,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 12:49:13,847 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 12:49:13,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 12:49:13,848 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 12:49:13,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-12-22 12:49:14,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 12:49:14,127 INFO L262 TraceCheckSpWp]: Trace formula consists of 1181 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 12:49:14,132 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 12:49:14,269 INFO L134 CoverageAnalysis]: Checked inductivity of 3500 backedges. 1039 proven. 0 refuted. 0 times theorem prover too weak. 2461 trivial. 0 not checked. [2023-12-22 12:49:14,269 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 12:49:14,269 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 12:49:14,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1452053269] [2023-12-22 12:49:14,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1452053269] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 12:49:14,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 12:49:14,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 12:49:14,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313397187] [2023-12-22 12:49:14,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 12:49:14,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 12:49:14,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 12:49:14,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 12:49:14,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 12:49:14,271 INFO L87 Difference]: Start difference. First operand 4464 states and 4705 transitions. Second operand has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:49:16,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 12:49:16,149 INFO L93 Difference]: Finished difference Result 9461 states and 10070 transitions. [2023-12-22 12:49:16,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 12:49:16,150 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1081 [2023-12-22 12:49:16,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 12:49:16,155 INFO L225 Difference]: With dead ends: 9461 [2023-12-22 12:49:16,155 INFO L226 Difference]: Without dead ends: 5176 [2023-12-22 12:49:16,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1080 GetRequests, 1079 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 12:49:16,158 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 69 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-22 12:49:16,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 232 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-22 12:49:16,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5176 states. [2023-12-22 12:49:16,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5176 to 4642. [2023-12-22 12:49:16,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4642 states, 4641 states have (on average 1.052574876104288) internal successors, (4885), 4641 states have internal predecessors, (4885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:49:16,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4642 states to 4642 states and 4885 transitions. [2023-12-22 12:49:16,194 INFO L78 Accepts]: Start accepts. Automaton has 4642 states and 4885 transitions. Word has length 1081 [2023-12-22 12:49:16,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 12:49:16,194 INFO L495 AbstractCegarLoop]: Abstraction has 4642 states and 4885 transitions. [2023-12-22 12:49:16,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:49:16,195 INFO L276 IsEmpty]: Start isEmpty. Operand 4642 states and 4885 transitions. [2023-12-22 12:49:16,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1207 [2023-12-22 12:49:16,204 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 12:49:16,204 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 12:49:16,226 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Ended with exit code 0 [2023-12-22 12:49:16,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 12:49:16,412 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 12:49:16,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 12:49:16,412 INFO L85 PathProgramCache]: Analyzing trace with hash -103382489, now seen corresponding path program 1 times [2023-12-22 12:49:16,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 12:49:16,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [691582323] [2023-12-22 12:49:16,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 12:49:16,415 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 12:49:16,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 12:49:16,416 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 12:49:16,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-12-22 12:49:16,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 12:49:16,691 INFO L262 TraceCheckSpWp]: Trace formula consists of 1324 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 12:49:16,697 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 12:49:16,821 INFO L134 CoverageAnalysis]: Checked inductivity of 4696 backedges. 1190 proven. 0 refuted. 0 times theorem prover too weak. 3506 trivial. 0 not checked. [2023-12-22 12:49:16,821 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 12:49:16,821 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 12:49:16,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [691582323] [2023-12-22 12:49:16,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [691582323] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 12:49:16,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 12:49:16,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 12:49:16,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624349545] [2023-12-22 12:49:16,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 12:49:16,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 12:49:16,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 12:49:16,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 12:49:16,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 12:49:16,823 INFO L87 Difference]: Start difference. First operand 4642 states and 4885 transitions. Second operand has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:49:18,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 12:49:18,586 INFO L93 Difference]: Finished difference Result 8956 states and 9564 transitions. [2023-12-22 12:49:18,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 12:49:18,586 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1206 [2023-12-22 12:49:18,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 12:49:18,590 INFO L225 Difference]: With dead ends: 8956 [2023-12-22 12:49:18,590 INFO L226 Difference]: Without dead ends: 5354 [2023-12-22 12:49:18,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1205 GetRequests, 1204 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 12:49:18,593 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 80 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-22 12:49:18,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 233 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-22 12:49:18,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5354 states. [2023-12-22 12:49:18,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5354 to 5176. [2023-12-22 12:49:18,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5176 states, 5175 states have (on average 1.0525603864734299) internal successors, (5447), 5175 states have internal predecessors, (5447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:49:18,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5176 states to 5176 states and 5447 transitions. [2023-12-22 12:49:18,652 INFO L78 Accepts]: Start accepts. Automaton has 5176 states and 5447 transitions. Word has length 1206 [2023-12-22 12:49:18,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 12:49:18,653 INFO L495 AbstractCegarLoop]: Abstraction has 5176 states and 5447 transitions. [2023-12-22 12:49:18,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:49:18,653 INFO L276 IsEmpty]: Start isEmpty. Operand 5176 states and 5447 transitions. [2023-12-22 12:49:18,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1385 [2023-12-22 12:49:18,665 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 12:49:18,665 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 12:49:18,674 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 (22)] Ended with exit code 0 [2023-12-22 12:49:18,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 12:49:18,870 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 12:49:18,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 12:49:18,870 INFO L85 PathProgramCache]: Analyzing trace with hash 879960063, now seen corresponding path program 1 times [2023-12-22 12:49:18,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 12:49:18,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [504149391] [2023-12-22 12:49:18,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 12:49:18,874 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 12:49:18,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 12:49:18,875 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) [2023-12-22 12:49:18,875 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 [2023-12-22 12:49:19,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 12:49:19,194 INFO L262 TraceCheckSpWp]: Trace formula consists of 1511 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-22 12:49:19,202 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 12:49:24,481 INFO L134 CoverageAnalysis]: Checked inductivity of 5900 backedges. 121 proven. 5195 refuted. 0 times theorem prover too weak. 584 trivial. 0 not checked. [2023-12-22 12:49:24,482 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 12:49:27,607 INFO L134 CoverageAnalysis]: Checked inductivity of 5900 backedges. 2247 proven. 48 refuted. 0 times theorem prover too weak. 3605 trivial. 0 not checked. [2023-12-22 12:49:27,607 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 12:49:27,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [504149391] [2023-12-22 12:49:27,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [504149391] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 12:49:27,608 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 12:49:27,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4] total 11 [2023-12-22 12:49:27,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595455753] [2023-12-22 12:49:27,608 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 12:49:27,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-22 12:49:27,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 12:49:27,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-22 12:49:27,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-12-22 12:49:27,610 INFO L87 Difference]: Start difference. First operand 5176 states and 5447 transitions. Second operand has 12 states, 12 states have (on average 105.75) internal successors, (1269), 11 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:49:40,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 12:49:40,448 INFO L93 Difference]: Finished difference Result 11218 states and 11883 transitions. [2023-12-22 12:49:40,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-22 12:49:40,449 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 105.75) internal successors, (1269), 11 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1384 [2023-12-22 12:49:40,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 12:49:40,455 INFO L225 Difference]: With dead ends: 11218 [2023-12-22 12:49:40,455 INFO L226 Difference]: Without dead ends: 7034 [2023-12-22 12:49:40,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2767 GetRequests, 2756 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2023-12-22 12:49:40,458 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 171 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 6641 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 6702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 6641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2023-12-22 12:49:40,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 149 Invalid, 6702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 6641 Invalid, 0 Unknown, 0 Unchecked, 12.7s Time] [2023-12-22 12:49:40,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7034 states. [2023-12-22 12:49:40,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7034 to 5176. [2023-12-22 12:49:40,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5176 states, 5175 states have (on average 1.0510144927536231) internal successors, (5439), 5175 states have internal predecessors, (5439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:49:40,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5176 states to 5176 states and 5439 transitions. [2023-12-22 12:49:40,507 INFO L78 Accepts]: Start accepts. Automaton has 5176 states and 5439 transitions. Word has length 1384 [2023-12-22 12:49:40,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 12:49:40,507 INFO L495 AbstractCegarLoop]: Abstraction has 5176 states and 5439 transitions. [2023-12-22 12:49:40,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 105.75) internal successors, (1269), 11 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:49:40,508 INFO L276 IsEmpty]: Start isEmpty. Operand 5176 states and 5439 transitions. [2023-12-22 12:49:40,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1393 [2023-12-22 12:49:40,520 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 12:49:40,520 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 7, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 12:49:40,529 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 [2023-12-22 12:49:40,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 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 [2023-12-22 12:49:40,721 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 12:49:40,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 12:49:40,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1215489389, now seen corresponding path program 1 times [2023-12-22 12:49:40,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 12:49:40,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2044451700] [2023-12-22 12:49:40,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 12:49:40,725 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 12:49:40,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 12:49:40,726 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 12:49:40,727 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 (24)] Waiting until timeout for monitored process [2023-12-22 12:49:41,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 12:49:41,062 INFO L262 TraceCheckSpWp]: Trace formula consists of 1519 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-22 12:49:41,070 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 12:49:46,293 INFO L134 CoverageAnalysis]: Checked inductivity of 5961 backedges. 77 proven. 5292 refuted. 0 times theorem prover too weak. 592 trivial. 0 not checked. [2023-12-22 12:49:46,293 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 12:50:03,088 INFO L134 CoverageAnalysis]: Checked inductivity of 5961 backedges. 2348 proven. 0 refuted. 0 times theorem prover too weak. 3613 trivial. 0 not checked. [2023-12-22 12:50:03,088 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 12:50:03,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2044451700] [2023-12-22 12:50:03,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2044451700] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-22 12:50:03,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-22 12:50:03,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2023-12-22 12:50:03,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493672042] [2023-12-22 12:50:03,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 12:50:03,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-22 12:50:03,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 12:50:03,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-22 12:50:03,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-12-22 12:50:03,090 INFO L87 Difference]: Start difference. First operand 5176 states and 5439 transitions. Second operand has 5 states, 5 states have (on average 79.8) internal successors, (399), 4 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:50:08,726 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 12:50:12,692 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 12:50:26,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 12:50:26,605 INFO L93 Difference]: Finished difference Result 9696 states and 10236 transitions. [2023-12-22 12:50:26,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-22 12:50:26,605 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 79.8) internal successors, (399), 4 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1392 [2023-12-22 12:50:26,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 12:50:26,610 INFO L225 Difference]: With dead ends: 9696 [2023-12-22 12:50:26,610 INFO L226 Difference]: Without dead ends: 5532 [2023-12-22 12:50:26,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2782 GetRequests, 2772 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-12-22 12:50:26,613 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 33 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 827 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 827 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.4s IncrementalHoareTripleChecker+Time [2023-12-22 12:50:26,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 17 Invalid, 890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 827 Invalid, 0 Unknown, 0 Unchecked, 23.4s Time] [2023-12-22 12:50:26,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5532 states. [2023-12-22 12:50:26,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5532 to 5176. [2023-12-22 12:50:26,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5176 states, 5175 states have (on average 1.0494685990338164) internal successors, (5431), 5175 states have internal predecessors, (5431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:50:26,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5176 states to 5176 states and 5431 transitions. [2023-12-22 12:50:26,658 INFO L78 Accepts]: Start accepts. Automaton has 5176 states and 5431 transitions. Word has length 1392 [2023-12-22 12:50:26,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 12:50:26,658 INFO L495 AbstractCegarLoop]: Abstraction has 5176 states and 5431 transitions. [2023-12-22 12:50:26,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 79.8) internal successors, (399), 4 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:50:26,659 INFO L276 IsEmpty]: Start isEmpty. Operand 5176 states and 5431 transitions. [2023-12-22 12:50:26,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1435 [2023-12-22 12:50:26,672 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 12:50:26,672 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 12:50:26,680 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 (24)] Forceful destruction successful, exit code 0 [2023-12-22 12:50:26,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 12:50:26,873 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 12:50:26,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 12:50:26,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1166332900, now seen corresponding path program 1 times [2023-12-22 12:50:26,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 12:50:26,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1760708332] [2023-12-22 12:50:26,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 12:50:26,877 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 12:50:26,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 12:50:26,878 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) [2023-12-22 12:50:26,879 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 (25)] Waiting until timeout for monitored process [2023-12-22 12:50:27,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 12:50:27,214 INFO L262 TraceCheckSpWp]: Trace formula consists of 1561 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-22 12:50:27,222 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 12:50:33,183 INFO L134 CoverageAnalysis]: Checked inductivity of 6129 backedges. 0 proven. 5495 refuted. 0 times theorem prover too weak. 634 trivial. 0 not checked. [2023-12-22 12:50:33,183 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 12:51:16,619 INFO L134 CoverageAnalysis]: Checked inductivity of 6129 backedges. 2375 proven. 99 refuted. 0 times theorem prover too weak. 3655 trivial. 0 not checked. [2023-12-22 12:51:16,619 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 12:51:16,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1760708332] [2023-12-22 12:51:16,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1760708332] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 12:51:16,619 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 12:51:16,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 12 [2023-12-22 12:51:16,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609935027] [2023-12-22 12:51:16,620 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 12:51:16,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-22 12:51:16,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 12:51:16,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-22 12:51:16,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2023-12-22 12:51:16,622 INFO L87 Difference]: Start difference. First operand 5176 states and 5431 transitions. Second operand has 13 states, 13 states have (on average 97.76923076923077) internal successors, (1271), 12 states have internal predecessors, (1271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:51:27,445 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 12:51:37,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 12:51:37,931 INFO L93 Difference]: Finished difference Result 11756 states and 12461 transitions. [2023-12-22 12:51:37,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-22 12:51:37,931 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 97.76923076923077) internal successors, (1271), 12 states have internal predecessors, (1271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1434 [2023-12-22 12:51:37,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 12:51:37,937 INFO L225 Difference]: With dead ends: 11756 [2023-12-22 12:51:37,937 INFO L226 Difference]: Without dead ends: 6678 [2023-12-22 12:51:37,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2876 GetRequests, 2855 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=111, Invalid=395, Unknown=0, NotChecked=0, Total=506 [2023-12-22 12:51:37,955 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 1542 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 11709 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1542 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 11889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 11709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.4s IncrementalHoareTripleChecker+Time [2023-12-22 12:51:37,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1542 Valid, 248 Invalid, 11889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 11709 Invalid, 0 Unknown, 0 Unchecked, 20.4s Time] [2023-12-22 12:51:37,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6678 states. [2023-12-22 12:51:37,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6678 to 4820. [2023-12-22 12:51:37,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4820 states, 4819 states have (on average 1.0377671716123678) internal successors, (5001), 4819 states have internal predecessors, (5001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:51:37,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4820 states to 4820 states and 5001 transitions. [2023-12-22 12:51:37,995 INFO L78 Accepts]: Start accepts. Automaton has 4820 states and 5001 transitions. Word has length 1434 [2023-12-22 12:51:37,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 12:51:37,996 INFO L495 AbstractCegarLoop]: Abstraction has 4820 states and 5001 transitions. [2023-12-22 12:51:37,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 97.76923076923077) internal successors, (1271), 12 states have internal predecessors, (1271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:51:37,996 INFO L276 IsEmpty]: Start isEmpty. Operand 4820 states and 5001 transitions. [2023-12-22 12:51:38,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1575 [2023-12-22 12:51:38,012 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 12:51:38,012 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 8, 8, 8, 8, 8, 8, 8, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 12:51:38,021 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 (25)] Forceful destruction successful, exit code 0 [2023-12-22 12:51:38,212 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 [2023-12-22 12:51:38,213 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 12:51:38,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 12:51:38,213 INFO L85 PathProgramCache]: Analyzing trace with hash 945739593, now seen corresponding path program 1 times [2023-12-22 12:51:38,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 12:51:38,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [722714462] [2023-12-22 12:51:38,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 12:51:38,217 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 12:51:38,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 12:51:38,218 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) [2023-12-22 12:51:38,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-12-22 12:51:38,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 12:51:38,596 INFO L262 TraceCheckSpWp]: Trace formula consists of 1710 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-22 12:51:38,605 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 12:51:43,814 INFO L134 CoverageAnalysis]: Checked inductivity of 7399 backedges. 1296 proven. 5434 refuted. 0 times theorem prover too weak. 669 trivial. 0 not checked. [2023-12-22 12:51:43,815 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 12:52:22,446 INFO L134 CoverageAnalysis]: Checked inductivity of 7399 backedges. 3659 proven. 50 refuted. 0 times theorem prover too weak. 3690 trivial. 0 not checked. [2023-12-22 12:52:22,447 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 12:52:22,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [722714462] [2023-12-22 12:52:22,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [722714462] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 12:52:22,447 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 12:52:22,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4] total 11 [2023-12-22 12:52:22,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439609539] [2023-12-22 12:52:22,447 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 12:52:22,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-22 12:52:22,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 12:52:22,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-22 12:52:22,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-12-22 12:52:22,450 INFO L87 Difference]: Start difference. First operand 4820 states and 5001 transitions. Second operand has 12 states, 12 states have (on average 114.66666666666667) internal successors, (1376), 11 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:52:37,075 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 12:52:47,843 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 12:52:52,226 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 12:52:52,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 12:52:52,278 INFO L93 Difference]: Finished difference Result 10330 states and 10758 transitions. [2023-12-22 12:52:52,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-22 12:52:52,278 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 114.66666666666667) internal successors, (1376), 11 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1574 [2023-12-22 12:52:52,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 12:52:52,283 INFO L225 Difference]: With dead ends: 10330 [2023-12-22 12:52:52,284 INFO L226 Difference]: Without dead ends: 6500 [2023-12-22 12:52:52,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3147 GetRequests, 3136 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2023-12-22 12:52:52,287 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 207 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 7482 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 7532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 7482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.1s IncrementalHoareTripleChecker+Time [2023-12-22 12:52:52,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 164 Invalid, 7532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 7482 Invalid, 0 Unknown, 0 Unchecked, 29.1s Time] [2023-12-22 12:52:52,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6500 states. [2023-12-22 12:52:52,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6500 to 4820. [2023-12-22 12:52:52,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4820 states, 4819 states have (on average 1.0363145880888152) internal successors, (4994), 4819 states have internal predecessors, (4994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:52:52,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4820 states to 4820 states and 4994 transitions. [2023-12-22 12:52:52,335 INFO L78 Accepts]: Start accepts. Automaton has 4820 states and 4994 transitions. Word has length 1574 [2023-12-22 12:52:52,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 12:52:52,336 INFO L495 AbstractCegarLoop]: Abstraction has 4820 states and 4994 transitions. [2023-12-22 12:52:52,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 114.66666666666667) internal successors, (1376), 11 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:52:52,336 INFO L276 IsEmpty]: Start isEmpty. Operand 4820 states and 4994 transitions. [2023-12-22 12:52:52,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1585 [2023-12-22 12:52:52,352 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 12:52:52,353 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 8, 8, 8, 7, 7, 7, 7, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 12:52:52,364 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 (26)] Forceful destruction successful, exit code 0 [2023-12-22 12:52:52,553 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 [2023-12-22 12:52:52,554 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 12:52:52,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 12:52:52,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1343746212, now seen corresponding path program 1 times [2023-12-22 12:52:52,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 12:52:52,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1660008692] [2023-12-22 12:52:52,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 12:52:52,558 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 12:52:52,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 12:52:52,559 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) [2023-12-22 12:52:52,561 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 [2023-12-22 12:52:52,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 12:52:52,938 INFO L262 TraceCheckSpWp]: Trace formula consists of 1727 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-22 12:52:52,947 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 12:52:55,654 INFO L134 CoverageAnalysis]: Checked inductivity of 8094 backedges. 1649 proven. 5816 refuted. 0 times theorem prover too weak. 629 trivial. 0 not checked. [2023-12-22 12:52:55,654 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 12:52:56,841 INFO L134 CoverageAnalysis]: Checked inductivity of 8094 backedges. 4294 proven. 150 refuted. 0 times theorem prover too weak. 3650 trivial. 0 not checked. [2023-12-22 12:52:56,841 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 12:52:56,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1660008692] [2023-12-22 12:52:56,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1660008692] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 12:52:56,842 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 12:52:56,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4] total 11 [2023-12-22 12:52:56,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578902447] [2023-12-22 12:52:56,842 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 12:52:56,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-22 12:52:56,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 12:52:56,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-22 12:52:56,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-12-22 12:52:56,845 INFO L87 Difference]: Start difference. First operand 4820 states and 4994 transitions. Second operand has 11 states, 11 states have (on average 134.1818181818182) internal successors, (1476), 11 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:53:10,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 12:53:10,842 INFO L93 Difference]: Finished difference Result 10816 states and 11307 transitions. [2023-12-22 12:53:10,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-22 12:53:10,843 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 134.1818181818182) internal successors, (1476), 11 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1584 [2023-12-22 12:53:10,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 12:53:10,849 INFO L225 Difference]: With dead ends: 10816 [2023-12-22 12:53:10,849 INFO L226 Difference]: Without dead ends: 7036 [2023-12-22 12:53:10,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3168 GetRequests, 3158 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-12-22 12:53:10,852 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 450 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 7865 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 7941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 7865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.8s IncrementalHoareTripleChecker+Time [2023-12-22 12:53:10,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [450 Valid, 177 Invalid, 7941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 7865 Invalid, 0 Unknown, 0 Unchecked, 13.8s Time] [2023-12-22 12:53:10,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7036 states. [2023-12-22 12:53:10,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7036 to 6600. [2023-12-22 12:53:10,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6600 states, 6599 states have (on average 1.034853765722079) internal successors, (6829), 6599 states have internal predecessors, (6829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:53:10,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6600 states to 6600 states and 6829 transitions. [2023-12-22 12:53:10,919 INFO L78 Accepts]: Start accepts. Automaton has 6600 states and 6829 transitions. Word has length 1584 [2023-12-22 12:53:10,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 12:53:10,920 INFO L495 AbstractCegarLoop]: Abstraction has 6600 states and 6829 transitions. [2023-12-22 12:53:10,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 134.1818181818182) internal successors, (1476), 11 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:53:10,920 INFO L276 IsEmpty]: Start isEmpty. Operand 6600 states and 6829 transitions. [2023-12-22 12:53:10,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1633 [2023-12-22 12:53:10,938 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 12:53:10,939 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 9, 9, 9, 8, 8, 8, 8, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 12:53:10,947 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 (27)] Forceful destruction successful, exit code 0 [2023-12-22 12:53:11,144 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 [2023-12-22 12:53:11,144 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 12:53:11,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 12:53:11,145 INFO L85 PathProgramCache]: Analyzing trace with hash 79769316, now seen corresponding path program 1 times [2023-12-22 12:53:11,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 12:53:11,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1753044585] [2023-12-22 12:53:11,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 12:53:11,149 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 12:53:11,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 12:53:11,150 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) [2023-12-22 12:53:11,150 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 [2023-12-22 12:53:11,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 12:53:11,528 INFO L262 TraceCheckSpWp]: Trace formula consists of 1777 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-22 12:53:11,536 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 12:53:17,909 INFO L134 CoverageAnalysis]: Checked inductivity of 8500 backedges. 0 proven. 7906 refuted. 0 times theorem prover too weak. 594 trivial. 0 not checked. [2023-12-22 12:53:17,909 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 12:53:47,903 INFO L134 CoverageAnalysis]: Checked inductivity of 8500 backedges. 4012 proven. 873 refuted. 0 times theorem prover too weak. 3615 trivial. 0 not checked. [2023-12-22 12:53:47,903 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 12:53:47,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1753044585] [2023-12-22 12:53:47,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1753044585] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 12:53:47,903 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 12:53:47,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 16 [2023-12-22 12:53:47,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062788881] [2023-12-22 12:53:47,904 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 12:53:47,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-22 12:53:47,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 12:53:47,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-22 12:53:47,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2023-12-22 12:53:47,907 INFO L87 Difference]: Start difference. First operand 6600 states and 6829 transitions. Second operand has 17 states, 17 states have (on average 102.23529411764706) internal successors, (1738), 16 states have internal predecessors, (1738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:54:37,495 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 12:54:50,260 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 12:55:13,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 12:55:13,584 INFO L93 Difference]: Finished difference Result 14781 states and 15516 transitions. [2023-12-22 12:55:13,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-22 12:55:13,592 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 102.23529411764706) internal successors, (1738), 16 states have internal predecessors, (1738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1632 [2023-12-22 12:55:13,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 12:55:13,600 INFO L225 Difference]: With dead ends: 14781 [2023-12-22 12:55:13,600 INFO L226 Difference]: Without dead ends: 10467 [2023-12-22 12:55:13,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3279 GetRequests, 3247 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=273, Invalid=849, Unknown=0, NotChecked=0, Total=1122 [2023-12-22 12:55:13,604 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 2106 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 13734 mSolverCounterSat, 418 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 71.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2106 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 14152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 418 IncrementalHoareTripleChecker+Valid, 13734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 80.3s IncrementalHoareTripleChecker+Time [2023-12-22 12:55:13,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2106 Valid, 273 Invalid, 14152 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [418 Valid, 13734 Invalid, 0 Unknown, 0 Unchecked, 80.3s Time] [2023-12-22 12:55:13,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10467 states. [2023-12-22 12:55:13,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10467 to 8024. [2023-12-22 12:55:13,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8024 states, 8023 states have (on average 1.0413810295400723) internal successors, (8355), 8023 states have internal predecessors, (8355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:55:13,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8024 states to 8024 states and 8355 transitions. [2023-12-22 12:55:13,714 INFO L78 Accepts]: Start accepts. Automaton has 8024 states and 8355 transitions. Word has length 1632 [2023-12-22 12:55:13,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 12:55:13,714 INFO L495 AbstractCegarLoop]: Abstraction has 8024 states and 8355 transitions. [2023-12-22 12:55:13,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 102.23529411764706) internal successors, (1738), 16 states have internal predecessors, (1738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:55:13,715 INFO L276 IsEmpty]: Start isEmpty. Operand 8024 states and 8355 transitions. [2023-12-22 12:55:13,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1829 [2023-12-22 12:55:13,738 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 12:55:13,740 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 10, 10, 9, 8, 8, 8, 8, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 12:55:13,750 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 (28)] Ended with exit code 0 [2023-12-22 12:55:13,941 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 [2023-12-22 12:55:13,942 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 12:55:13,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 12:55:13,942 INFO L85 PathProgramCache]: Analyzing trace with hash 564292260, now seen corresponding path program 1 times [2023-12-22 12:55:13,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 12:55:13,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [313887195] [2023-12-22 12:55:13,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 12:55:13,947 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 12:55:13,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 12:55:13,947 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) [2023-12-22 12:55:13,954 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 [2023-12-22 12:55:14,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 12:55:14,417 INFO L262 TraceCheckSpWp]: Trace formula consists of 1991 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-22 12:55:14,427 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 12:55:16,200 INFO L134 CoverageAnalysis]: Checked inductivity of 11105 backedges. 6873 proven. 0 refuted. 0 times theorem prover too weak. 4232 trivial. 0 not checked. [2023-12-22 12:55:16,201 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 12:55:16,201 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 12:55:16,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [313887195] [2023-12-22 12:55:16,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [313887195] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 12:55:16,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 12:55:16,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-22 12:55:16,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339238901] [2023-12-22 12:55:16,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 12:55:16,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-22 12:55:16,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 12:55:16,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-22 12:55:16,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 12:55:16,203 INFO L87 Difference]: Start difference. First operand 8024 states and 8355 transitions. Second operand has 4 states, 4 states have (on average 132.0) internal successors, (528), 4 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:55:18,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 12:55:18,381 INFO L93 Difference]: Finished difference Result 14118 states and 14821 transitions. [2023-12-22 12:55:18,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-22 12:55:18,381 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 132.0) internal successors, (528), 4 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1828 [2023-12-22 12:55:18,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 12:55:18,388 INFO L225 Difference]: With dead ends: 14118 [2023-12-22 12:55:18,388 INFO L226 Difference]: Without dead ends: 8380 [2023-12-22 12:55:18,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1827 GetRequests, 1825 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-22 12:55:18,391 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 103 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 799 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-22 12:55:18,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 14 Invalid, 835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 799 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-22 12:55:18,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8380 states. [2023-12-22 12:55:18,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8380 to 7846. [2023-12-22 12:55:18,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7846 states, 7845 states have (on average 1.040280433397068) internal successors, (8161), 7845 states have internal predecessors, (8161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:55:18,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7846 states to 7846 states and 8161 transitions. [2023-12-22 12:55:18,471 INFO L78 Accepts]: Start accepts. Automaton has 7846 states and 8161 transitions. Word has length 1828 [2023-12-22 12:55:18,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 12:55:18,472 INFO L495 AbstractCegarLoop]: Abstraction has 7846 states and 8161 transitions. [2023-12-22 12:55:18,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 132.0) internal successors, (528), 4 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-22 12:55:18,472 INFO L276 IsEmpty]: Start isEmpty. Operand 7846 states and 8161 transitions. [2023-12-22 12:55:18,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1842 [2023-12-22 12:55:18,496 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 12:55:18,498 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 10, 10, 10, 9, 9, 9, 9, 8, 7, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 12:55:18,510 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 (29)] Forceful destruction successful, exit code 0 [2023-12-22 12:55:18,702 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 [2023-12-22 12:55:18,703 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 12:55:18,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 12:55:18,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1303119008, now seen corresponding path program 1 times [2023-12-22 12:55:18,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 12:55:18,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [576472229] [2023-12-22 12:55:18,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 12:55:18,708 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 12:55:18,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 12:55:18,708 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) [2023-12-22 12:55:18,709 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 [2023-12-22 12:55:19,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 12:55:19,168 INFO L262 TraceCheckSpWp]: Trace formula consists of 2004 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-22 12:55:19,178 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 12:55:24,026 INFO L134 CoverageAnalysis]: Checked inductivity of 11189 backedges. 2010 proven. 8751 refuted. 0 times theorem prover too weak. 428 trivial. 0 not checked. [2023-12-22 12:55:24,026 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-22 12:58:17,586 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-22 12:58:17,596 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 [2023-12-22 12:58:17,597 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-22 12:58:17,597 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-22 12:58:17,786 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 [2023-12-22 12:58:17,787 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 1842 with TraceHistMax 16,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. [2023-12-22 12:58:17,790 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 12:58:17,792 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-22 12:58:17,793 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 12:58:17 BoogieIcfgContainer [2023-12-22 12:58:17,793 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-22 12:58:17,794 INFO L158 Benchmark]: Toolchain (without parser) took 865217.90ms. Allocated memory was 302.0MB in the beginning and 767.6MB in the end (delta: 465.6MB). Free memory was 255.5MB in the beginning and 371.0MB in the end (delta: -115.4MB). Peak memory consumption was 350.9MB. Max. memory is 8.0GB. [2023-12-22 12:58:17,794 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 206.6MB. Free memory is still 155.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-22 12:58:17,794 INFO L158 Benchmark]: CACSL2BoogieTranslator took 475.32ms. Allocated memory is still 302.0MB. Free memory was 255.3MB in the beginning and 217.5MB in the end (delta: 37.8MB). Peak memory consumption was 37.7MB. Max. memory is 8.0GB. [2023-12-22 12:58:17,794 INFO L158 Benchmark]: Boogie Procedure Inliner took 71.42ms. Allocated memory is still 302.0MB. Free memory was 217.5MB in the beginning and 211.0MB in the end (delta: 6.5MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. [2023-12-22 12:58:17,794 INFO L158 Benchmark]: Boogie Preprocessor took 105.29ms. Allocated memory is still 302.0MB. Free memory was 211.0MB in the beginning and 259.7MB in the end (delta: -48.7MB). Peak memory consumption was 7.9MB. Max. memory is 8.0GB. [2023-12-22 12:58:17,795 INFO L158 Benchmark]: RCFGBuilder took 2546.71ms. Allocated memory is still 302.0MB. Free memory was 259.2MB in the beginning and 242.0MB in the end (delta: 17.1MB). Peak memory consumption was 113.6MB. Max. memory is 8.0GB. [2023-12-22 12:58:17,795 INFO L158 Benchmark]: TraceAbstraction took 862013.35ms. Allocated memory was 302.0MB in the beginning and 767.6MB in the end (delta: 465.6MB). Free memory was 241.0MB in the beginning and 371.0MB in the end (delta: -130.0MB). Peak memory consumption was 335.3MB. Max. memory is 8.0GB. [2023-12-22 12:58:17,795 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 206.6MB. Free memory is still 155.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 475.32ms. Allocated memory is still 302.0MB. Free memory was 255.3MB in the beginning and 217.5MB in the end (delta: 37.8MB). Peak memory consumption was 37.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 71.42ms. Allocated memory is still 302.0MB. Free memory was 217.5MB in the beginning and 211.0MB in the end (delta: 6.5MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 105.29ms. Allocated memory is still 302.0MB. Free memory was 211.0MB in the beginning and 259.7MB in the end (delta: -48.7MB). Peak memory consumption was 7.9MB. Max. memory is 8.0GB. * RCFGBuilder took 2546.71ms. Allocated memory is still 302.0MB. Free memory was 259.2MB in the beginning and 242.0MB in the end (delta: 17.1MB). Peak memory consumption was 113.6MB. Max. memory is 8.0GB. * TraceAbstraction took 862013.35ms. Allocated memory was 302.0MB in the beginning and 767.6MB in the end (delta: 465.6MB). Free memory was 241.0MB in the beginning and 371.0MB in the end (delta: -130.0MB). Peak memory consumption was 335.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 125]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 125). Cancelled while NwaCegarLoop was analyzing trace of length 1842 with TraceHistMax 16,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 183 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 862.0s, OverallIterations: 29, TraceHistogramMax: 16, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.2s, AutomataDifference: 360.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 10333 SdHoareTripleChecker+Valid, 349.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10333 mSDsluCounter, 3741 SdHoareTripleChecker+Invalid, 311.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1393 mSDsCounter, 2490 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 90370 IncrementalHoareTripleChecker+Invalid, 92860 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2490 mSolverCounterUnsat, 2348 mSDtfsCounter, 90370 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 40347 GetRequests, 40093 SyntacticMatches, 0 SemanticMatches, 254 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 779 ImplicationChecksByTransitivity, 15.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8024occurred in iteration=27, InterpolantAutomatonStates: 241, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 28 MinimizatonAttempts, 13644 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 4.3s SatisfiabilityAnalysisTime, 308.9s InterpolantComputationTime, 23862 NumberOfCodeBlocks, 23862 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 40273 ConstructedInterpolants, 0 QuantifiedInterpolants, 274775 SizeOfPredicates, 37 NumberOfNonLiveVariables, 26370 ConjunctsInSsa, 194 ConjunctsInUnsatCore, 44 InterpolantComputations, 17 PerfectInterpolantSequences, 97114/148857 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown